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Sample records for condutos radiculares irradiados

  1. O conduto valvulado bovino contegra, um biomaterial para o tratamento cirúrgico de cardiopatias congênitas

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    Shi-Min Yuan

    Full Text Available O Contegra, um enxerto de veia jugular bovina, tem sido amplamente utilizado como biomaterial de preferência no tratamento cirúrgico das cardiopatias congênitas, especialmente como um conduto para a reconstrução da via de saída ventricular direita. Este artigo tem como objetivo fazer uma revisão abrangente sobre os desfechos clínicos do Contegra. Foram recuperados, coletados e analisados, relatos de Contegra publicados desde 2002. Havia 1.718 Contegra, aplicados em 1.705 pacientes. Os tamanhos dos condutos foram de 8-22 mm. As idades dos pacientes foram de recém-nascidos até 74,5 anos, com prevalência de pacientes pediátricos. O diagnóstico primário foi cardiopatia congênita em todos os casos, sendo os três diagnósticos principais: tetralogia de Fallot, tronco arterioso e atresia pulmonar, que representaram 25,6%, 16,7% e 13,1%, respectivamente. O Contegra foi utilizado como enxerto tubular na posição pulmonar em 1635 (95,9% pacientes, como remendo monocúspide em 12 (0,7%, como enxerto na posição da valva pulmonar ou monocúspide em 40 (2,3%, e, como conduto artéria pulmonar-veia cava inferior na operação de Fontan, em 18 (1,1% pacientes, respectivamente. O reimplante de conduto foi realizado em 141 (8,3% pacientes, 33,8 ± 37 (8,6-106,8 meses após a inserção do conduto inicial. A plástica do conduto foi necessária em seis (0,4% e a reintervenção em 83 (4,9% dos pacientes. As indicações do reimplante do conduto incluíram estenose importante da anastomose distal, pseudoaneurisma da anastomose proximal e regurgitação importante do conduto. Quanto ao bom desempenho, disponibilidade e longevidade, o Contegra é um biomaterial adequado para a reconstrução da via de saída ventricular direita e como remendo para reparo de comunicação interventricular, mas não é apto para a operação de Fontan.

  2. Morphologic analysis, by means of scanning electron microscopy, of the effect of Er: YAG laser on root surfaces submitted to scaling and root planing Análise morfológica, através de microscopia eletrônica de varredura, da ação do laser de Er: YAG em superfícies radiculares submetidas à raspagem e aplainamento radicular

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    Letícia Helena Theodoro

    2002-12-01

    Full Text Available The purpose of this study was to morphologically evaluate, by means of scanning electron microscopy, the effects of Er:YAG laser on the treatment of root surfaces submitted to scaling and root planing with conventional periodontal instruments. Eighteen root surfaces (n = 18, which had been previously scaled and planed, were assigned to 3 groups (n = 6. The control Group (G1 received no further treatment; Group 2 (G2 was irradiated with Er:YAG laser (2.94 mum, with 47 mJ/10 Hz, in a focused mode with air/water spray during 15 s and with 0.57 J/cm² of fluency per pulse; Group 3 (G 3 was irradiated with Er:YAG laser (2.94 mum, with 83 mJ/10 Hz, in a focused mode with air/water spray during 15 s and with 1.03 J/cm² of fluency per pulse. We concluded that the parameters adopted for Group 3 removed the smear layer from the root surface, exposing the dentinal tubules. Although no fissures, cracks or carbonized areas were observed, an irregular surface was produced by Er:YAG laser irradiation. Thus, the biocompatibility of the irradiated root surface, within the periodontal healing process, must be assessed.O objetivo do presente estudo foi analisar morfologicamente, através de microscopia eletrônica de varredura, os efeitos do laser de Er:YAG no tratamento de superfícies radiculares submetidas à raspagem e aplainamento radicular com instrumentos manuais. Foram utilizados 18 espécimes (n = 18 de superfícies radiculares que após ser submetidos à raspagem e aplainamento radicular foram divididos em 3 grupos (n = 6. O grupo controle (G1 não sofreu nenhum tratamento; Grupo 2 (G2 foi irradiado com laser de Er:YAG (2,94 mim 47 mJ/10 Hz, focalizado,com refrigeração à água durante 15 s e fluência de pulso de 0,57 J/cm²; Grupo 3 (G3 foi irradiado com laser de Er:YAG (2,94 mim, 83 mJ/10 Hz, focalizado, com refrigeração à agua durante 15 s e fluência de pulso de 1,03 J/cm². Através da análise dos resultados podemos concluir que o laser de

  3. Apical microinfiltration evaluation of radicular channels irradiated with Er:YAG laser in vitro; Avaliacao da microinfiltracao apical de condutos radiculares irradiados in vitro com laser de Er:YAG

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    Sebrao, Catia Cilene Nass

    2003-07-01

    It was evaluated, in vitro, the adaptation of the filling material (Sealer 2S{sup R}) to the root channels dentine walls treated using the endodontic technique and prepared with the Er:YAG laser, by the technique of infiltration of methylene blue dye. Using scanning electronic microscopy, the morphologic alteration of the root channel dentine was observed for one sample per studied group. Also, an evaluation of the temperature increase in the external surface of the root during the irradiations was performed for two samples per group. For each group of samples, with eleven roots each, two sub-groups had been considered: the dry, irradiated after completely dry with absorbent cones of paper, and the humid, where a cone of absorbent paper was applied for two seconds in the root canal, leaving them lightly humidified. Considering the used energies for the irradiations, the groups are: G1, control (without irradiation), G2-dry (100 mJ-10 Hz), G2-humid (100 mJ-10 Hz), G3-dry (140 mJ-6 Hz), G3-humid (140 mJ-6 Hz), G4-dry (180 mJ-6 Hz), and G4-humid (180 mJ-6 Hz). The results had shown that apical microinfiltration did not exhibit significant difference among groups. The highest increase in temperature was observed for the dry groups, with the maximum variation of temperature of 6.5 deg C. Under the scanning electronic microscopy analysis, the humid groups had presented cleaner surfaces than the dry groups. The G4-humid group presented extensive regions of fusion and resolidification of the dentine. (author)

  4. Utilização de valvas homólogas e heterólogas em condutos extracardíacos The use of homograph and heterograph valves in extracardiac conduits

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    Rui Siqueira de Almeida

    1988-08-01

    Full Text Available O conceito do uso de um conduto extracardíaco para estabelecer uma via de saída, conectando o ventrículo direito com o tronco pulmonar, ou seus ramos, foi desenvolvido na década de 60. Entre 1971 e 1986, 335 pacientes receberam, no The Hospital for Sick Children, de Londres, condutos extracardíacos para o lado direito do coração; 176 destes foram homoenxertos aórticos, preservados em solução antibióticonutriente; 140 heteroenxertos (Hancock, Ross, Carpentier-Edwards, lonescu-Shiley e 19 tubos não valvulados. Estes condutos foram usados na correção de defeitos cardíacos complexos. A idade média foi de 6,34 anos e o peso médio, de 17,8 kg. O diâmetro interno dos condutos variou de 8 a 30 mm. A mortalidade hospitalar foi de 29,2% e o seguimento dos sobrevivente teve uma duração máxima de 14,3 anos, sendo que apenas 40% delas foram relacionadas ao conduto extracardíaco. A curva atuarial, livre de obstrução, dos condutos extracardíacos foi significativa, quando se analisaram os homoenxertos, face a cada grupo de heteroenxertos (p The concept of using extracardiac conduits, to establish an outflow tract between the right ventricle and the pulmonary artery was developed on the sixties. Between 1971 and 1986, 335 patients received extracardiac conduits for the right heart, at The Hospital for Sick Children, London; 176 were antibiotic preserved aortic homografts (Hancock, Ross, Carpentier-Edwards, lonescu-Shiley and 19 non-valved tubes. These conduits were used for the repair of complex congenital heart defects. The mean age of these groups was 6.34 ± 4.6 years and the mean weight 17.8 ± 10.8 kg. The internal diameter of the conduits varied from 8 to 30 mm. The hospital mortality was 29.2% and long-term follow-up of the survivals had a maximum period of 14,39 years. Sixty patients (17.9% were submited to 60 reoperations, being only 40% conduit related. The actuarial survival cun/e of freedom from obstruction was significant

  5. Alimentos irradiados

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    Sendra, E.

    2001-01-01

    Full Text Available Not available

    La industria alimentaria y las administraciones públicas realizan grandes esfuerzos para mejorar el mantenimiento de las condiciones higiénicas y evitar la contaminación de alimentos. Pese a estos esfuerzos siguen produciéndose un gran numero de procesos patológicos relacionados con los alimentos. Las buenas prácticas higiénicas pueden reducir el nivel de contaminación, pero algunos microorganismos patógenos resulta imposible eliminarlos, especialmente de aquellos alimentos que se comercializan crudos y con procesado mínimo. La irradiación se presenta como un método de descontaminación posible para este grupo de alimentos, especialmente válido como método de descontaminación final. Dosis de irradiación inferiores a 10 kGy (dependiendo del alimento y condiciones son efectivas para eliminar posibles patógenos no esporulados, inactivar parásitos, tratar especias, condimentos y otros ingredientes secos, fruta fresca y productos de cuarta gama (vegetales frescos, limpios y envasados, listos para consumo. Respecto a la seguridad de los alimentos irradiados, está plenamente demostrado que no provoca la aparición de compuestos especiales y provoca una ligera reducción en el contenido de algunas vitaminas, que es equiparable a la producida por otros tratamientos tecnológicos. Se ha visto también que microorganismos que han sido sometidos a radiaciones y han sobrevivido a ellas se muestran más sensibles a las condiciones ambientales de estrés que aquellos que nunca han sido irradiados. Pese a que los organismos internacionales FAO y OMS presentan la irradiación como un método seguro, eficaz, limpio con el medio ambiente y energéticamente eficiente, los consumidores siguen estando desinformados y mostrándose reticentes a su utilización. En la actualidad se están llevando a cabo muchos sondeos, de los que se deriva que una correcta in formación al consumidor es el único método válido para conseguir la

  6. Operação de Rastelli utilizando-se conduto valvulado de pericárdio bovino: experiência inicial Rastelli operation with bovine pericardium valved conduit: early experience

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    Carlos R Moraes

    1988-08-01

    Full Text Available O presente trabalho descreve a experiência inicial com a operação de Rastelli, utilizando-se um conduto valvulado de pericárdio bovino preservado em glutaraldeído. O enxerto consta de um conduto, que serve para reconstruir a via de saída do ventrículo direito e o tronco pulmonar, com uma válvula tricúspide suturada em seu interior sem anel de suporte, permitindo, assim, um mecanismo de fluxo unidirecional. De maio de 1986 a outubro de 1987, 5 crianças foram submetidas à operação de Rastelli empregando-se este tipo de conduto valvulado. Três eram do sexo feminino e 2, do masculino, variando a idade de 1 a 8 anos x 5. Três pacientes tinham transposição das grandes artérias, comunicação interventricular (CIV e estenose subpulmonar. Uma criança era portadora de atresia pulmonar com CIV e de um shunt prévio tipo Waterston e, finalmente, a outra tinha um tronco arterial comum tipo II. Dois doentes faleceram de causas não relacionadas ao tipo de conduto valvulado utilizado. O conduto valvulado de pericárdio bovino preservado em glutaraldeído mostrou excelente flexibilidade, facilitando o manuseio cirúrgico e permitindo perfeita adaptabilidade dentro do saco pericárdico. A ausência de anel de suporte tem a vantagem de eliminar qualquer gradiente e de abolir o turbilhonamento do sangue - causas reconhecidas de calcificação.The present report describes the initial experience with the Rastelli operation utilizing a composite graft of glutaraldehyde preserved bovine pericardium. The graft is made up of a tube which serves to reconstruct the outflow tract of the right ventricle and the pulmonary artery, and an inner tricuspid valve, without a supporting ring, which provides the tube with a one-way flow mechanism. From May, 1986 to October, 1987, five children were submitted to Rastelli operation utilizing this valved tube. Three were female and two male, ranging in age from 1 e to 8 years (mean 5 years. Three had transposition

  7. O conduto valvulado bovino contegra, um biomaterial para o tratamento cirúrgico de cardiopatias congênitas The contegra valved bovine conduit: a biomaterial for the surgical treatment of congenital heart defects

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    Shi-Min Yuan

    2012-01-01

    Full Text Available O Contegra, um enxerto de veia jugular bovina, tem sido amplamente utilizado como biomaterial de preferência no tratamento cirúrgico das cardiopatias congênitas, especialmente como um conduto para a reconstrução da via de saída ventricular direita. Este artigo tem como objetivo fazer uma revisão abrangente sobre os desfechos clínicos do Contegra. Foram recuperados, coletados e analisados, relatos de Contegra publicados desde 2002. Havia 1.718 Contegra, aplicados em 1.705 pacientes. Os tamanhos dos condutos foram de 8-22 mm. As idades dos pacientes foram de recém-nascidos até 74,5 anos, com prevalência de pacientes pediátricos. O diagnóstico primário foi cardiopatia congênita em todos os casos, sendo os três diagnósticos principais: tetralogia de Fallot, tronco arterioso e atresia pulmonar, que representaram 25,6%, 16,7% e 13,1%, respectivamente. O Contegra foi utilizado como enxerto tubular na posição pulmonar em 1635 (95,9% pacientes, como remendo monocúspide em 12 (0,7%, como enxerto na posição da valva pulmonar ou monocúspide em 40 (2,3%, e, como conduto artéria pulmonar-veia cava inferior na operação de Fontan, em 18 (1,1% pacientes, respectivamente. O reimplante de conduto foi realizado em 141 (8,3% pacientes, 33,8 ± 37 (8,6-106,8 meses após a inserção do conduto inicial. A plástica do conduto foi necessária em seis (0,4% e a reintervenção em 83 (4,9% dos pacientes. As indicações do reimplante do conduto incluíram estenose importante da anastomose distal, pseudoaneurisma da anastomose proximal e regurgitação importante do conduto. Quanto ao bom desempenho, disponibilidade e longevidade, o Contegra é um biomaterial adequado para a reconstrução da via de saída ventricular direita e como remendo para reparo de comunicação interventricular, mas não é apto para a operação de Fontan.Contegra, a bovine jugular vein graft, has been widely used as a preferable biomaterial in the surgical treatment of

  8. O conduto valvulado bovino contegra, um biomaterial para o tratamento cirúrgico de cardiopatias congênitas The contegra valved bovine conduit: a biomaterial for the surgical treatment of congenital heart defects

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    Shi-Min Yuan

    2012-12-01

    Full Text Available O Contegra, um enxerto de veia jugular bovina, tem sido amplamente utilizado como biomaterial de preferência no tratamento cirúrgico das cardiopatias congênitas, especialmente como um conduto para a reconstrução da via de saída ventricular direita. Este artigo tem como objetivo fazer uma revisão abrangente sobre os desfechos clínicos do Contegra. Foram recuperados, coletados e analisados, relatos de Contegra publicados desde 2002. Havia 1.718 Contegra, aplicados em 1.705 pacientes. Os tamanhos dos condutos foram de 8-22 mm. As idades dos pacientes foram de recém-nascidos até 74,5 anos, com prevalência de pacientes pediátricos. O diagnóstico primário foi cardiopatia congênita em todos os casos, sendo os três diagnósticos principais: tetralogia de Fallot, tronco arterioso e atresia pulmonar, que representaram 25,6%, 16,7% e 13,1%, respectivamente. O Contegra foi utilizado como enxerto tubular na posição pulmonar em 1635 (95,9% pacientes, como remendo monocúspide em 12 (0,7%, como enxerto na posição da valva pulmonar ou monocúspide em 40 (2,3%, e, como conduto artéria pulmonar-veia cava inferior na operação de Fontan, em 18 (1,1% pacientes, respectivamente. O reimplante de conduto foi realizado em 141 (8,3% pacientes, 33,8 ± 37 (8,6-106,8 meses após a inserção do conduto inicial. A plástica do conduto foi necessária em seis (0,4% e a reintervenção em 83 (4,9% dos pacientes. As indicações do reimplante do conduto incluíram estenose importante da anastomose distal, pseudoaneurisma da anastomose proximal e regurgitação importante do conduto. Quanto ao bom desempenho, disponibilidade e longevidade, o Contegra é um biomaterial adequado para a reconstrução da via de saída ventricular direita e como remendo para reparo de comunicação interventricular, mas não é apto para a operação de Fontan.Contegra, a bovine jugular vein graft, has been widely used as a preferable biomaterial in the surgical treatment of

  9. Reconstrução da aorta com conduto de pericárdio bovino corrugado

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    Claudio A. Salles

    1998-04-01

    Full Text Available No período de outubro de 1989 a maio de 1997, 40 pacientes portadores de dissecção aórtica, aneurisma da aorta, coarctação da aorta ou doença oclusiva aorto-ilíaca foram submetidos a reconstrução da aorta utilizando-se conduto de pericárdio bovino corrugado processado em glutaraldeído. A reconstrução total da aorta ascendente com substituição da valva aórtica e reimplante das artérias coronárias foi realizada em 9 pacientes, a simples substituição da aorta ascendente em 6, aorta torácica descendente em 2, arco aórtico em 1, aorta toracoabdominal em 1 e a aorta abdominal foi reconstruída em 21, incluindo pacientes submetidos a reconstrução aorto-ilíaca ou aorto-femoral. A mortalidade hospitalar foi de 8 (20% pacientes e as causas de óbito foram baixo débito cardíaco, recidiva da dissecção aórtica, falência de múltiplos órgãos e sangramento. O seguimento total foi de 128,4 pacientes-anos, com um seguimento médio de 4 anos por paciente. Complicações tardias relacionadas ao conduto vascular foram observadas em 4 pacientes, incluindo obstrução de um dos ramos do tubo bifurcado utilizado para reconstrução aorto-femoral e infecção em 3, resultando em degeneração secundária do conduto e formação de pseudo-aneurisma. Os 4 pacientes foram submetidos a reoperações, correspondendo a uma incidência de 3,1% ± 1,6% por paciente/ano. Ocorreram 5 óbitos tardios e as causas foram morte súbita, doença coronariana, pneumonia, septicemia e complicações metabólicas resultantes de diabetes e insuficiência renal crônica, correspondendo a uma incidência de 3,9% ± 1,7% por paciente/ano. A sobrevida atuarial em 9 anos foi 61,5% ± 9,2%, incluindo a mortalidade cirúrgica e a sobrevida atuarial livre de degeneração tissular estrutural primária do conduto biológico foi de 100%. O corrugamento do pericárdio, resultante da incorporação do princípio crimping utilizado nas próteses vasculares sint

  10. Macrophage polarization differs between apical granulomas, radicular cysts, and dentigerous cysts.

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    Weber, Manuel; Schlittenbauer, Tilo; Moebius, Patrick; Büttner-Herold, Maike; Ries, Jutta; Preidl, Raimund; Geppert, Carol-Immanuel; Neukam, Friedrich W; Wehrhan, Falk

    2018-01-01

    Apical periodontitis can appear clinically as apical granulomas or radicular cysts. There is evidence that immunologic factors are involved in the pathogenesis of both pathologies. In contrast to radicular cysts, the dentigerous cysts have a developmental origin. Macrophage polarization (M1 vs M2) is a main regulator of tissue homeostasis and differentiation. There are no studies comparing macrophage polarization in apical granulomas, radicular cysts, and dentigerous cysts. Forty-one apical granulomas, 23 radicular cysts, and 23 dentigerous cysts were analyzed in this study. A tissue microarray (TMA) of the 87 consecutive specimens was created, and CD68-, CD11c-, CD163-, and MRC1-positive macrophages were detected by immunohistochemical methods. TMAs were digitized, and the expression of macrophage markers was quantitatively assessed. Radicular cysts are characterized by M1 polarization of macrophages while apical granulomas show a significantly higher degree of M2 polarization. Dentigerous cysts have a significantly lower M1 polarization than both analyzed periapical lesions (apical granulomas and radicular cysts) and accordingly, a significantly higher M2 polarization than radicular cysts. Macrophage cell density in dentigerous cysts is significantly lower than in the periapical lesions. The development of apical periodontitis towards apical granulomas or radicular cysts might be directed by macrophage polarization. Radicular cyst formation is associated with an increased M1 polarization of infiltrating macrophages. In contrast to radicular cysts, dentigerous cysts are characterized by a low macrophage infiltration and a high degree of M2 polarization, possibly reflecting their developmental rather than inflammatory origin. As M1 polarization of macrophages is triggered by bacterial antigens, these results underline the need for sufficient bacterial clearance during endodontic treatment to prevent a possible M1 macrophage-derived stimulus for radicular cyst

  11. Giant radicular cyst of the maxilla

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    Deshmukh, Jeevanand; Shrivastava, Ratika; Bharath, Kashetty Panchakshari; Mallikarjuna, Rachappa

    2014-01-01

    Radicular cysts are inflammatory odontogenic cysts of tooth bearing areas of the jaws. Most of these lesions involve the apex of offending tooth and appear as well-defined radiolucencies. Owing to its clinical characteristics similar to other more commonly occurring lesions in the oral cavity, differential diagnosis should include dentigerous cyst, ameloblastoma, odontogenic keratocyst, periapical cementoma and Pindborg tumour. The present case report documents a massive radicular cyst crossing the midline of the palate. Based on clinical, radiographical and histopathological findings, the present case was diagnosed as an infected radicular cyst. The clinical characteristics of this cyst could be considered as an interesting and unusual due to its giant nature. The lesion was surgically enucleated along with the extraction of the associated tooth; preservation of all other teeth and vital structures, without any postoperative complications and satisfactory healing, was achieved. PMID:24792022

  12. Bilateral radicular cyst in mandible: an unusual case report.

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    Bava, Fareed Ahmed; Umar, Dilshad; Bahseer, Bahija; Baroudi, Kusai

    2015-02-01

    A radicular cyst is one of the furthermost everyday odontogenic cysts of the anterior maxilla, not regularly comprehended in youth. They are found mostly at the apices of the tooth (periapical cyst), lateral surface of the roots (lateral radicular cyst) and remains in the jaw after removal of the offending tooth (residual cyst). The radicular cyst has been catalogued as an inflammatory cyst, as an outcome to pulpal necrosis succeeding caries, with a linked periapical inflammatory reaction. They advance sluggishly and asymptomatic lest infected. Because of this they can extent to big dimensions. Many times it is perplexing to segregate radicular cysts from the obligatory pre-existing chronic periapical periodontitis lesions radiographically. Here, we present a rare case with bilateral radicular cyst in relation to first molar of the mandible in a 19-year-old. Orthopantomograph showed a large unilocular radiolucency with a well-defined border in the periapical region of the first molar on the left side extending from the root of the second premolar to the mesial root of the second molar. Correspondingly another well-defined unilocular radiolucency with a well-defined border was seen on the right side of the mandible. Several treatment possibilities are presented for a radicular cyst such as surgical endodontic treatment, extraction of the transgressing tooth, enucleation with primary closure, and marsupialization trailed by enucleation. The patient management comprised surgical enucleation of cystic sac followed by rehabilitation of the same area.

  13. Role of tumour necrosis factor in pathogenesis of radicular cyst

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    Qureshi, W.U.R.; Idris, M.; Khan, S.A.

    2011-01-01

    Background: The radicular cyst is very common odontogenic cyst of the jaws, which is usually associated with a tooth with necrotic pulp. The cyst formation requires proliferation of the epithelial rest cells of Malassez present in the periodontal ligament. Proliferation of epithelial rest cells of Malassez is an essential event in the Pathogenesis of radicular cyst. The wall of the cyst contains epithelial cells, macrophages, fibroblasts and other cells. TNF is one of inflammatory mediators, which is produced by macrophages and monocytes. This study was carried out to investigate the role of tumour necrosis factor in the pathogenesis of radicular cyst, which is by far the commonest cystic lesion of the jaws. Methods: Explants from 20 radicular cysts were cultured in vitro to grow the epithelial cells. However, the cultures were rapidly contaminated with fibroblasts and it was impossible to grow the epithelial cells separately. Therefore, the proliferative effect of Tumour Necrosis Factor (TNF) was studied on mammalian epithelial cells. Results: TNF at low concentration had a proliferative effect on the epithelial cells, which may play some role in pathogenesis of radicular cyst. Conclusion: TNF stimulated the epithelial cell proliferation in low concentration and inhibit the proliferation in higher concentrations. These two effects may have some implications in the pathogenesis of radicular cyst. (author)

  14. Comparison of digital radiometric features between radicular cysts and periapical granulomas

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    Jin, Yeon Hwa; Lee, Keon Il

    1999-01-01

    The purpose of this study was to investigate whether a radiometric analysis of radicular cysts and periapical granulomas is useful in the differential diagnosis. In this experiment, twenty-nine periapical radiographs of the radicular cyst and those periapical granuloma were used. The periapical radiography was taken by intraoral paralleling device. The X-ray film was digitized and digitally filtered to reduce film-grain noise. We estimated density difference of the inner/outer area, roundness or circularity, bone profile or scan line of the margin and cumulative percentage frequency curve of radicular cyst and periapical granuloma.The obtained results were as follows ; 1. The differences in density between ROIs of inner and outer area of radicular cysts were smaller than those of periapical granulomas.2. The equivalent circular diameter was over 6.3 mm, there was significant difference between periapical cyst and periapical granuloma.3. In differential diagnosis of radicular cyst and periapical granuloma using bone profile, sensitivity, spicificity and accuracy were considerably high (0.83, 0.86, 0.86) respectively.4. Cumulative percentage frequency curve of the radicular cyst was closer to the pseudo-pixel value of 50 than average curve, whereas periapical granuloma was closer to that of 0. Hence we conclude that digital radiometric features might be useful in the differential diagnosis between radicular cyst and periapical granuloma.

  15. Comparison of digital radiometric features between radicular cysts and periapical granulomas

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    Jin, Yeon Hwa; Lee, Keon Il [Dept. of Oral and Maxillofacial Radiology, College of Dentistry, Wankwang University, Yongin (Korea, Republic of)

    1999-02-15

    The purpose of this study was to investigate whether a radiometric analysis of radicular cysts and periapical granulomas is useful in the differential diagnosis. In this experiment, twenty-nine periapical radiographs of the radicular cyst and those periapical granuloma were used. The periapical radiography was taken by intraoral paralleling device. The X-ray film was digitized and digitally filtered to reduce film-grain noise. We estimated density difference of the inner/outer area, roundness or circularity, bone profile or scan line of the margin and cumulative percentage frequency curve of radicular cyst and periapical granuloma.The obtained results were as follows ; 1. The differences in density between ROIs of inner and outer area of radicular cysts were smaller than those of periapical granulomas.2. The equivalent circular diameter was over 6.3 mm, there was significant difference between periapical cyst and periapical granuloma.3. In differential diagnosis of radicular cyst and periapical granuloma using bone profile, sensitivity, spicificity and accuracy were considerably high (0.83, 0.86, 0.86) respectively.4. Cumulative percentage frequency curve of the radicular cyst was closer to the pseudo-pixel value of 50 than average curve, whereas periapical granuloma was closer to that of 0. Hence we conclude that digital radiometric features might be useful in the differential diagnosis between radicular cyst and periapical granuloma.

  16. Using Periapical Radiography to Differentiate Periapical Granuloma and Radicular Cysts

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    Farhadi

    2016-06-01

    Full Text Available Background The distinction between radicular cysts and apical granulomas is important in treatment decision. Objectives The current study aimed to differentiate these two lesions based on radiography images. Patients and Methods The material consisted of 138 radiographs obtained using Kodak E -speed, in patients aged 29 to 47, divided into two groups: 109 granulomas and 29 radicular cysts. Size of radiography images was measured; the tooth then was extracted and examined in pathologist lab. The results were analyzed by SPSS.15 and ROC curve was created to find cut-off point to differentiate periapical granuloma and radicular cysts. Results Average size of radiography in periapical granuloma was 7.4 mm and for a radicular cyst was 11.1 mm. Cut-off point was 8.2 mm and the area under curve (AUC was 0.63. Also, the tests were 83% sensitive and 79% specific. Conclusions Based on 8.2 mm cut-off point could differentiate 83% periapical granulomas and 79% radicular cysts from radiography images.

  17. Ameloblastomatous Change in Radicular Cyst of The Jaw in a Nigerian Population.

    Science.gov (United States)

    Omoregie, F O; Sede, M A; Ojo, A M

    2015-06-01

    To determine the incidence, age, gender, jaw-sites and subtypes of radicular cyst, and to determine the incidence of ameloblastomatous change in radicular cyst in a Nigerian population. A 10-year retrospective analysis of all diagnosed orofacial lesions in the Department of Oral Pathology and Medicine, University of Benin Teaching Hospital, Benin City, Nigeria. From the 785 diagnosed orofacial lesions within the study period; there were 54 (6.9%) cases of radicular cysts of the jaws. The peak age group was the 3(rd) decade (n=23, 42.6%) with a mean age of 31 ± 1.7 years. There were 29 (53.7%) males and 25 (46.3%) females, giving a ratio of 1.2:1. The mandible was the commonest jaw-site (n=32, 59.3%). There were 12 (22.2%) cases of periapical cyst which were significantly associated with anterior maxillary site (n=8, 14.8%) [p=0.001]. Seven (13.0%) cases of cystic ameloblastoma were diagnosed among the radicular cysts, with a predilection of the lesions for 3(rd) and 4(th) decades of life (n=6, 11.1%), and posterior mandible (n=5, 9.3%). This study showed a low incidence of radicular cyst of the jaw among orofacial lesions and a relatively higher incidence of ameloblastomatous change in radicular cyst compared to previous reports. Immuno-histochemical examination is recommended to differentiate radicular cyst with ameloblastomatous-like change from cystic ameloblastoma arising from radicular cyst.

  18. Immunoexpression of vascular endothelial growth factor in periapical granulomas, radicular cysts, and residual radicular cysts.

    Science.gov (United States)

    Nonaka, Cassiano Francisco Weege; Maia, Alexandre Pinto; Nascimento, George João Ferreira do; de Almeida Freitas, Roseana; Batista de Souza, Lélia; Galvão, Hébel Cavalcanti

    2008-12-01

    Our aim was to assess and compare the immunoexpression of vascular endothelial growth factor (VEGF) in periapical granulomas (PGs), radicular cysts (RCs), and residual radicular cysts (RRCs), relating it to the angiogenic index and the intensity of the inflammatory infiltrate. Twenty PGs, 20 RCs, and 10 RRCs were evaluated by immunohistochemistry using anti-VEGF antibody. Angiogenic index was determined by microvessel count (MVC) using anti-von Willebrand factor antibody. The PGs and RCs showed higher expression of VEGF than the RRCs. Lesions presenting few inflammatory infiltrate revealed the lowest immunoexpression of VEGF (P .05). VEGF is present in periapical inflammatory lesions but at a lower level in RRCs. The expression of this proangiogenic factor is closely related to the intensity of the inflammatory infiltrate in these lesions.

  19. Mixed periapical lesion: an atypical radicular cyst with extensive calcifications.

    Science.gov (United States)

    Ramos-Perez, Flávia Maria de Moraes; Pontual, Andréa dos Anjos; França, Talita Ribeiro Tenório de; Pontual, Maria Luiza dos Anjos; Beltrão, Ricardo Villar; Perez, Danyel Elias da Cruz

    2014-01-01

    The radicular cyst is an inflammatory odontogenic cyst of endodontic origin. Radiographically, the lesion appears as a periapical radiolucent image. This report describes a very rare case of a mixed periapical radiographic image diagnosed as a radicular cyst. A 37-year-old female patient presented a mixed, well-circumscribed image located in the periapical region of the left maxillary central incisor, which presented unsatisfactory endodontic treatment. Microscopic examination revealed a cavity lined by non-keratinized squamous epithelium and extensive calcifications in the cystic lumen and lining epithelium. Diagnosis of radicular cyst with extensive calcifications was established. Endodontic retreatment was performed and no radiographic signs of recurrence were observed 18 months after treatment. Although very rare, a radicular cyst should be considered in the differential diagnosis of a mixed periapical image associated to teeth with pulp necrosis.

  20. Early Postoperative Magnetic Resonance Imaging in Detecting Radicular Pain After Lumbar Decompression Surgery: Retrospective Study of the Relationship Between Dural Sac Cross-sectional Area and Postoperative Radicular Pain.

    Science.gov (United States)

    Futatsugi, Toshimasa; Takahashi, Jun; Oba, Hiroki; Ikegami, Shota; Mogami, Yuji; Shibata, Syunichi; Ohji, Yoshihito; Tanikawa, Hirotaka; Kato, Hiroyuki

    2017-07-01

    A retrospective analysis. To evaluate the association between early postoperative dural sac cross-sectional area (DCSA) and radicular pain. The correlation between postoperative magnetic resonance imaging (MRI) findings and postoperative neurological symptoms after lumbar decompression surgery is controversial. This study included 115 patients who underwent lumbar decompression surgery followed by MRI within 7 days postoperatively. There were 46 patients with early postoperative radicular pain, regardless of whether the pain was mild or similar to that before surgery. The intervertebral level with the smallest DCSA was identified on MRI and compared preoperatively and postoperatively. Risk factors for postoperative radicular pain were determined using univariate and multivariate analyses. Subanalysis according to absence/presence of a residual suction drain also was performed. Multivariate regression analysis showed that smaller postoperative DCSA was significantly associated with early postoperative radicular pain (per -10 mm; odds ratio, 1.26). The best cutoff value for radicular pain was early postoperative DCSA of 67.7 mm. Even with a cutoff value of surgery. The best cutoff value for postoperative radicular pain was 67.7 mm. Absence of a suction drain at the time of early postoperative MRI was related to smaller DCSA.

  1. Evaluación tomográfica y radiográfica de la obturación radicular tridimensional de conductos radiculares únicos tratados con tres técnicas de obturación radicular: Estudio in Vitro

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    Mónica Alexandra Pavón Granja

    2016-09-01

    Full Text Available El principal reto durante la terapia endodóntica es la obturación radicular, considerada como fase crítica ya que de esta va a depender el éxito o el fracaso. Por varios años se ha investigado tanto materiales como técnicas que permitan el sellado hermético tridimensional del sistema de conductos radiculares, biocompatibilidad que permita la adecuada reparación de los tejidos periapicales y que la obturación se mantenga con el tiempo proporcionando salud. Objetivo: Evaluar la adaptación tridimensional de tres técnicas de obturación radicular definitiva a nivel del tercio apical de conductos radiculares únicos. Materiales y métodos: Estudio de tipo experimental y aleatorizado, la muestra fue de 42 raíces de dientes uniradiculares divididos en 3 grupos de estudio (n=14, previamente se realizó un registro radiográfico periapical digital de toda la muestra posteriormente fueron instrumentados con técnica hibrida, desinfectados con NaOCl al 5,25% + activación ultrasónica y EDTA al 17%, GA fue sometido a técnica de obturación lateral en frío, GB aplicado técnica de obturación termomecánica McSpadden y GC se obturó con técnica termoplastificada (BeFill-VDW. Resultados: Los grupos C y B observados a través de tomografía computarizada presentaron mejores resultados de obturación radicular que el grupo A que no presentó un buen sellado apical, sin embargo, en el grupo C se observó mejores resultados que en A y B Conclusiones: Las técnicas de obturación radicular definitivas con la técnica termoplastificada mostraron ser ideales para proporcionar un sellado apical hermético durante el tratamiento endodóntico en la fase de obturación

  2. Quistes radiculares. Posibilidad de tratamiento endodóncico

    OpenAIRE

    Canalda Sahli, Carlos; Canalda Piera, Carlos

    1981-01-01

    Las principales complicaciones apicales y periapicales de la gan­grena pulpar, son la periodontitis apical crónica y el quiste radicular. Representan el 90 por ciento del total de lesiones apicales (BHASKAR). El 10 por ciento restante, corresponde a lesiones mucho menos habi­tuales: cementoma, absceso alveolar, quiste residual, tumor de células gigantes, etc. El tratamiento del granuloma y del quiste radicular ha evolucio­nado en el tiempo en un sentido más conservador. La existencia de una l...

  3. Management of a large radicular cyst: A non-surgical endodontic approach

    Directory of Open Access Journals (Sweden)

    Shweta Dwivedi

    2014-01-01

    Full Text Available A radicular cyst arises from epithelial remnants stimulated to proliferate by an inflammatory process originating from pulpal necrosis of a non-vital tooth. Radiographically, the classical description of the lesion is a round or oval, well-circumscribed radiolucent image involving the apex of the tooth. A radicular cyst is usually sterile unless it is secondarily infected. This paper presents a case report of conservative non-surgical management of a radicular cyst associated with permanent maxillary right central incisor, right lateral incisor and right canine in a 24-year-old female patient. Root canal treatment was done together with cystic aspiration of the lesion. The lesion was periodically followed up and significant bone formation was seen at the periapical region of affected teeth and at the palate at about 9 months. Thus, nonsurgical healing of a large radicular cyst with palatal swelling provided favorable clinical and radiographic response.

  4. Reparacion espontánea de fractura radicular horizontal

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    Jorge Elias Dancur Turizo

    2013-10-01

    Full Text Available Resumen Se reporta un caso clínico de una fractura radicular horizontal en un central superior izquierdo, que reparó espontáneamente sin tratamiento dental alguno. La fractura se diagnosticó catorce años después de recibir el trauma, en un examen radiográfico rutinario de la consulta endodóntica, ya que el diente sin ninguna sintomatología presentaba al examen clínico cambio de color y al examen radiográfico se observaba zona radiolúcida en la zona apical, por lo que fue remitida del posgrado de ortodoncia al posgrado de endodoncia de la facultad de odontología de la Universidad de Cartagena. Al examen radiográfico realizado en el posgrado de endodoncia se observa línea de fractura radicular horizontal a nivel de la unión del tercio cervical con el tercio medio de la raíz y además se encuentra un defecto óseo al mismo nivel de la fractura radicular. Se realiza el tratamiento de conducto radicular sin complicación alguna. Este caso es sorprendente por realizarse una reparación espontánea sin tratamiento odontológico alguno y más aún sin emitirse un diagnóstico de fractura radicular con anterioridad. (DUAZARY 2010, 79 - 83AbstractIs reported a clinical case of a horizontal root fracture in a maxillary left central incisor that was spontaneously repaired without any dental treatment is reported. The root fracture was diagnosed in an x-ray endodontic examination routine fourteen years after receiving the trauma due to changes in the color of the tooth and asymptomatic, x-ray examination showed a radiolucent zone apically, reason why the patient was sent from orthodontic service to endodontic service at Dentistry School of Cartagena University. Radiographs examination showed a line of horizontal fracture between the union of the cervical third with the middle third and in addition there is a bone defect at the same level of the root fracture. Root canal treatment is done without any complication. This case is surprising

  5. Salivary flow and corono-radicular caries in elderly patients

    OpenAIRE

    Campodónico Reategui, Carlos; Chein Villacampa, Sylvia; Benavente Lipa, Lourdes; Delgadillo Avila, Juana; Alvarez Paucar, Maria Angelica; Espinoza Escajadillo, Sofia; Vidal Goñi, Raúl; Ventocilla Huasupoma, Maria; Evaristo Chiyong, Teresa

    2014-01-01

    The aim of this study was to determine the correlation between hypo-salivation and corono-radicular caries in older adult patients, which analyzed the physicochemical properties of saliva (flow, pH), the frequency and location of the corono-radicular caries. Was selected a sample of 45 persons, adult patients over 60 years and another 18 to 26 years (control group), from service centers, hospitals and universities. The technique of collection of saliva, consisted of making chewing a piece of ...

  6. Role of matrix metalloproteinases in radicular cysts and periapical granulomas.

    Science.gov (United States)

    D'addazio, G; Artese, L; Piccirilli, M; Perfetti, G

    2014-01-01

    The aim of the present study was to evaluate the expression and distribution of different classes of matrix metalloproteinases (MMPs) in radicular cysts and periapical granulomas. Twenty consecutive specimens of radicular cysts and 20 of periapical granulomas were selected. Expression of MMP-2, -9, -8, -13, -3 was immunohistochemically evaluated. The intensity of expression of the MMPs was evaluated using a semi-quantitative analysis: low = +; intermediate = ++; high = +++. Positive expression of MMPs was present with different distribution. MMP-9 expressed differently in the lesions. Indeed, in periapical granulomas low expression was found in endothelial cells and fibroblasts, whilst high intensities were only detected in inflammatory cells. On the contrary, in radicular cysts the high intensities were mainly present in keratinocytes and fibroblasts. MMP-8 was mainly expressed in inflammatory cells of periapical granulomas. MMP-2 and -3 presented a low intensity of expression in both groups. MMP-13 showed a variable pattern of distribution in the different cell types of the two different lesions. The present investigation supports the role of MMPs in the inflammatory process leading to the development of radicular cysts and periapical granulomas. The results of the present study suggested that the increased enlargement of radicular cysts, compared to periapical granulomas, might be related to a higher expression of MMP-9. On the other hands, the higher intensity of expression of MMP-8 in periapical granulomas could be related to an active inflammatory process. MMP-8 could play an important role in the inflammation processes during the development of periapical lesions.

  7. Activación del topacio natural irradiado por neutrones en el núcleo del reactor RP-10

    OpenAIRE

    Gómez, J.; Parreño, Fernando; Lázaro, Gerardo; Vela, Mariano

    2003-01-01

    Se obtuvieron cristales de topacio activados al ser irradiados con neutrones dentro del núcleo del reactor RP-10. La activación depende del flujo de neutrones, por ello se desarrolló portamuestras (canes de irradiación) para absorber que son los causantes de la activación

  8. An unusual case report of bilateral mandibular radicular cysts

    Directory of Open Access Journals (Sweden)

    Niyanta S Joshi

    2011-01-01

    Full Text Available A radicular cyst is one of the most common odontogenic cysts of anterior maxilla, not commonly seen in adolescence. Here, we present a rare, atypical case, of bilateral radicular cysts of the mandibular posterior region in a 13-year-old girl. The patient management comprised surgical enucleation of cystic sac under general anesthesia followed by rehabilitation of the same area. The purpose of this article is to lay emphasis on the pedodontist′s role in early diagnosis and treatment of such lesions.

  9. Palatal radicular groove: Clinical implications of early diagnosis and surgical sealing

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    P Corrêa-Faria

    2011-01-01

    Full Text Available Palatal radicular groove is a discreet alteration in tooth morphology, characterized by an invagination that begins near the cingulum of the tooth and moves in an apical direction. Clinically, palatal radicular groove may be associated with periodontal and/or endodontic problems. This paper describes a clinical case of a young patient with palatal radicular groove with no signs of periodontal disease or endodontic impairment. An early diagnosis was made and treatment consisted of surgical sealing of the defect. After a 2-year period, reexaminations demonstrated adequate hygiene, maintenance of tooth vitality and periodontal health. The early diagnosis and sealing of the groove observed surgically made the root surface smooth, avoiding subgingival bacterial plaque buildup, and preventing possible periodontal and/or pulp impairment stemming from the defect.

  10. CT-guided periradicular therapy in cervical and lumbar radicular syndromes

    International Nuclear Information System (INIS)

    Nian Dingfang; Zhou Jun; Li Wenhua; Cao Qingxuan; Xia Baosu; Apitzsch, D.E.

    2007-01-01

    Objective: To evaluate the effectiveness of CT-guided periradicular therapy (PRT) in cervical and lumber radicular syndromes. Methods: Seventy two cases of cervical and lumbar radicular syndromes were treated by CT-guided PRT. During PRT, 10-20 mg of Triamhexal and 3-4 ml of Carbostesin 0.25%(Bupivacainhydrochlorid) were injected into the space around the corresponding spinal root, once a week, all together six times as a course. Results: Four hundreds and forty six PRT procedures were carried out in 72 patients having a successful puncture and a satisfying spread of Triamhexal and Carbostesin around the spinal nerve root space for every time. After 6 to 24 months follow up, 62 patients showed a significant pain reduction or complete disappearance. Moderate improvement was not noted in 6 and no improvement in 4. The effective rate was 94.4% without any correlative complication. Conclusions: CT-guided PRT is an effective, easy and safe procedure to treat patients with refractory cervical or lumbar radicular pain syndromes. (authors)

  11. Digital radiography density measurements in differentiation between periapical granulomas and radicular cysts.

    Science.gov (United States)

    Rózyło-Kalinowska, Ingrid

    2007-05-01

    The distinction between radicular cysts and apical granulomas is a matter of considerable importance in making a treatment decision. Because there are no clearly defined radiographic criteria, the distinction is made on the grounds of size. However, it has been suggested that cysts can be distinguished from granulomas on the basis of their radiometric density. The results of previous studies have proved conflicting. To determine possibilities of application of digital radiography density measurements in differentiation of periapical granulomas and radicular cysts of inflammatory origin. The material consisted of 355 digital periapical radiograms obtained using Digora, RVG and Dixi 2 digital radiography systems in patients aged 20 to 84, divided into two groups: 259 granulomas and 102 radicular cysts. By means of Digora 2.0 software there were measured maximum and minimum densities along a line, then there was calculated the difference between maximum and minimum density. The largest dimensions of the lesions were measured - perpendicular and parallel to the root canal axis. It was proved that to some extent it was possible to differentiate cystic granulomas and radicular cysts on the basis of the difference between maximum and minimum density in linear measurement - when the difference exceeded 85.6 the lesion was a cyst and when it was below 45.9 a granuloma was diagnosed. Combination of two criteria - the calculated difference between densities and the largest dimension of a lesion, increased diagnostic possibilities of radiological differentiation of granulomas and radicular cysts.

  12. Alteração da temperatura radicular externa durante o preparo para contenção intra-radicular

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    FERREIRA Cláudio Maníglia

    1999-01-01

    Full Text Available O objetivo deste trabalho foi comparar in vitro a alteração de temperatura na superfície radicular externa durante o preparo para contenção intra-radicular utilizando 4 técnicas de remoção da guta-percha: condensadores aquecidos, brocas de Peeso, Gates-Glidden e Largo, em 40 dentes pré-molares inferiores (unirradiculares tratados endodonticamente. O experimento foi realizado em uma câmara com temperatura controlada em torno de 26°C. Para a remoção da guta-percha do interior dos canais, foram calculados dois terços do comprimento da raiz, deixando em torno de 4 mm de obturação apical. As medições da temperatura radicular externa foram realizadas com um termopar acoplado a um multímetro e efetuadas em 3 regiões: cervical (em torno de 3 mm abaixo da junção cemento-esmalte, média e apical. A análise de variância indicou diferenças significantes (p < 0,01 entre as regiões e as técnicas utilizadas. O teste complementar de Tukey indicou que os condensadores aquecidos produziram o maior aumento de temperatura dentre as técnicas, e a broca de Peeso dentre as brocas, seguida pela de Largo e de Gates-Glidden. Dentre as regiões, a apical apresentou a maior alteração de temperatura em todas as técnicas avaliadas.

  13. EXTENSIVE RADICULAR CYST OF THE MANDIBLE: A RARE CASE REPORT

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    Gokul VENKATESHWAR

    2013-03-01

    Full Text Available The radicular cyst is the most common inflammatory odontogenic cystic lesion of the jaws. It usually originates as a sequel to a periapical inflammatory process, following chemical, physical or bacterial injury. Due to its chronic etiology, the cyst usually appears towards the later stage of life. It has a male sex predilection, with the maxillary anterior region as the most common site of involvement. This article reports a rare case of a large radicular cyst in the mandible, its management and follow up along one year.

  14. Alterações químicas e nutricionais do grão-de-bico (Cicer arietinum L.) cru irradiado e submetido à cocção

    OpenAIRE

    Ferreira,Andréa Cristina Penati; Brazaca,Solange Guidolin Canniatti; Arthur,Valter

    2006-01-01

    O presente trabalho teve por objetivos analisar, em grãos não submetidos à irradiação, a composição centesimal e mineral, para verificar as alterações provocadas pela cocção. Em grãos crus e cozidos, não irradiados (controle) e irradiados (doses de 2, 4, 6, 8 e 10 kGy), foram realizadas também as análises de: disponibilidade de ferro in vitro, digestibilidade da proteína in vitro e perfil de aminoácidos. Os resultados das análises dos minerais demonstraram que ocorreu diminuição significativa...

  15. Interacciones radiculares en sistemas agroforestales: mecanismos y opciones de manejo

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    F. Casanova

    2007-01-01

    Full Text Available Los sistemas agroforestales (SAF son una forma de uso de la tierra en donde las leñosas interactúan con los cultivos y/o animales, con la finalidad de diversificar y optimizar la producción de manera sostenida. Sin embargo, estos sistemas tienen limitantes originados por una combinación inadecuada de las diferentes especies, lo que resulta en competencia entre ellas. Las características radiculares de las especies leñosas tienen un papel importante en el éxito de los SAF, ya que indican modificaciones que pudieran existir entre especies asociadas. Por tanto, el objetivo de esta revisión es analizar la importancia de las interacciones radiculares, los criterios para el manejo con base en las características morfológicas y patrones de crecimiento entre especies y su impacto en los SAF. La incorporación de especies arbóreas dentro de los cultivos requiere de objetivos claros; es decir, conocer el papel que desempeñarían dentro del sistema. No es redituable utilizar especies arbóreas que no poseen cierto valor o producto, ya que la competencia entre los árboles y los cultivos es solamente admisible si es compensada a través de porlas ventajas con relación a los aumentos en la productividad de sistema. Son deseables aquellas especies arbóreas cuyas raíces sean agresivas con relación a los sistemas radiculares del cultivo asociado, y que manifiesten un crecimiento lateral profundo y/o posean una alta plasticidad. Una opción para reducir la competencia radicular es la regulación del espaciamiento y/o distribución de las diversas especies asociadas, así como la aplicación de prácticas de manejo. Los patrones de la actividad radicular de las plantas difieren entre especies, su conocimiento puede ayudar a evitar competencia excesiva y pérdidas de nutrientes en SAF con la asignación óptima del espacio y recursos disponibles.

  16. Carcinoma espinocelular do conduto auditivo externo: estudo por tomografia computadorizada de seis casos Squamous cell carcinoma of the external auditory canal: computed tomography findings in six cases

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    Fábio Mota Gonzalez

    2005-06-01

    Full Text Available OBJETIVO: Analisar a importância da avaliação tomográfica da extensão profunda dos carcinomas espinocelulares do conduto auditivo externo. MATERIAIS E MÉTODOS: Foram realizados exames tomográficos com cortes axiais e coronais com janelas para partes moles e óssea em seis pacientes com carcinoma espinocelular do conduto auditivo externo, com idade variando entre 55 e 71 anos, internados no Hospital Heliópolis, no período entre maio de 1995 e dezembro de 2003. RESULTADOS: Dos seis pacientes, todos apresentavam aumento de partes moles no conduto auditivo externo, cinco (83,3% tinham erosão óssea e invasão da orelha média, quatro (66,7% possuíam comprometimento da mastóide e da glândula parótida, três (50% apresentavam invasão da articulação temporomandibular, dois (33,3% tinham invasão da fossa média, do canal carotídeo e linfonodomegalia júgulo-carotídea alta ipisilateral. CONCLUSÃO: A avaliação da extensão tumoral profunda fornecida pela tomografia computadorizada é importante no estadiamento clínico, possibilitando um planejamento terapêutico mais eficaz.OBJECTIVE: To evaluate the role of computed tomography in the assessment of deep extension of squamous cell carcinoma of the external auditory canal. MATERIALS AND METHODS: In the period between May 1995 and December 2003 six patients with squamous cell carcinoma of the external auditory canal were submitted to computed tomography scan at "Hospital Heliópolis", São Paulo, SP, Brazil, including axial and coronal slices with soft tissue and bone algorithms. RESULTS: Thickening of the soft tissue of the external auditory canal was seen in all patients, bone erosion and invasion of the middle ear in five (83.3%, invasion of the mastoid and parotid gland in four (66.7%, invasion of the temporomandibular joint in three (50%, and invasion of the middle cranial fossa, carotid canal and cervical lymph node enlargement in two (33.3% patients. CONCLUSION: Assessment of

  17. Methylation pattern of IFNG in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Campos, Kelma; Gomes, Carolina Cavaliéri; de Fátima Correia-Silva, Jeane; Farias, Lucyana Conceição; Fonseca-Silva, Thiago; Bernardes, Vanessa Fátima; Pereira, Cláudia Maria; Gomez, Ricardo Santiago

    2013-04-01

    Interferon-γ plays an important role in the pathogenesis of periapical lesions, and the methylation of IFNG has been associated with transcriptional inactivation. The purpose of the present study was to investigate IFNG promoter methylation in association with gene transcription and protein levels in periapical granulomas and radicular cysts. Methylation-specific polymerase chain reaction was used to assess the DNA methylation pattern of the IFNG gene in 16 periapical granulomas and 13 radicular cyst samples. The transcription levels of IFNG mRNA were verified by quantitative real-time polymerase chain reaction, and protein expression was evaluated by immunohistochemistry. All the periapical lesion samples exhibited partial or total methylation of the IFNG gene. In addition, an increased methylation profile was found in radicular cysts compared with periapical granulomas. Increased IFNG mRNA expression was observed in the partially methylated periapical lesion samples relative to the samples that were completely methylated. The present study provides the first evidence of the possible impact of IFNG methylation on IFNG transcription in periapical lesions. Copyright © 2013 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  18. Cardiovascular and lifestyle risk factors in lumbar radicular pain or clinically defined sciatica: a systematic review

    Science.gov (United States)

    Karppinen, Jaro; Leino-Arjas, Päivi; Solovieva, Svetlana; Varonen, Helena; Kalso, Eija; Ukkola, Olavi; Viikari-Juntura, Eira

    2007-01-01

    Lumbar radicular pain is a fairly common health problem, yet its risk factors are far from clear. There are no published systematic reviews on associations between cardiovascular or lifestyle risk factors and lumbar radicular pain or sciatica. The aim of this systematic literature review was to assess associations between these risk factors and lumbar radicular pain or sciatica. We conducted a systematic search of the Medline database for all original articles on lumbar radicular pain or sciatica published until August 2006. Twenty-two papers from 19 studies were included in the review. Overweight or obesity was associated with sciatica in most of the case-control and cohort studies. Some studies showed an increased risk of lumbar radicular pain in smokers with a long smoking history or in those with high levels of physical activity. A few case-control studies showed an association between serum C-reactive protein and sciatica. No consistent associations were found for serum lipids levels or high blood pressure. In summary, the associations of overweight, long smoking history, high physical activity and a high serum C-reactive protein level with lumbar radicular pain or sciatica were substantiated by the present review. However, more prospective studies are needed in order to further clarify these associations and the mechanisms of action. PMID:17525856

  19. Immunohistochemical Analysis of Galectins-1, -3, and -7 in Periapical Granulomas, Radicular Cysts, and Residual Radicular Cysts.

    Science.gov (United States)

    Brito, Lívia Natália Sales; de Lemos Almeida, Maria Manuela Rodrigues; de Souza, Lélia Batista; Alves, Pollianna Muniz; Nonaka, Cassiano Francisco Weege; Godoy, Gustavo Pina

    2018-05-01

    Galectins play important roles in immunoinflammatory responses, but their participation in the development of periapical lesions remains unclear. This study aimed to evaluate the expressions of galectins-1, -3, and -7 in periapical lesions, correlating them with the intensity of the inflammatory infiltrate and the pattern of the cystic epithelium. Twenty periapical granulomas (PGs), 20 radicular cysts (RCs), and 20 residual radicular cysts (RRCs) were submitted to immunohistochemistry using anti-galectin-1, -3, and -7 antibodies. The percentage of immunopositive cells in epithelial and connective tissues was determined. In connective tissue, PGs exhibited higher cytoplasmic/membrane expression of galectins-1 and -7 than RCs and RRCs (P  .05). In the epithelial component, a higher nuclear expression of galectin-7 was detected in RRCs (P cysts with hyperplastic epithelium (P cysts (P < .05). Galectins-1 and -7 may play important roles in the pathogenesis of PGs, RCs, and RRCs. On the other hand, the present results suggest only a minor involvement of galectin-3 in the development of these lesions. Copyright © 2018 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  20. Schulze and Brand type a-IV dens invaginatus with radicular cyst: A rare case report

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    Rachita Chengappa

    2015-01-01

    Full Text Available Though a clinical examination may reveal a deep fissure or pit on the surface of an anterior tooth, radiographic examination is a more accurate approach to diagnose an invagination. Dens invaginatus is one of the common dental deformities, but the defect involving the root and its association with radicular cyst is still very uncommon. The objective of this case presentation is to report a case of radicular dens in dente, which is a rare dental anomaly. This case report shows that dens invaginatus with an open apex and a radicular cyst can be treated successfully using currently available materials.

  1. Conservative Approach in the Management of Radicular Cyst in a Child: Case Report

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    Narendra Varma Penumatsa

    2013-01-01

    Full Text Available Radicular cyst is the most common odontogenic cystic lesion of inflammatory origin. It is also known as periapical cyst, apical periodontal cyst, root end cyst, or dental cyst. It arises from epithelial residues in the periodontal ligament as a result of inflammation. The inflammation usually follows the death of dental pulp. This paper presents a case report of a patient with radicular cyst associated with a primary molar.

  2. Modulación del sistema radicular en condiciones de estrés

    OpenAIRE

    Silva Navas, Javier

    2016-01-01

    Durante su evolución, las plantas han adquirido un desarrollo post-embrionario que juega un papel esencial en su adaptación al ambiente. Durante dicha adaptación, la modulación del crecimiento y desarrollo del sistema radicular juegan un papel clave en el éxito reproductivo, o en otras palabras, la productividad agrícola. Por lo tanto, la obtención de sistemas radiculares más eficientes, es considerada como una de las mejores opciones biotecnológicas para incrementar la producción agrícola. E...

  3. Eosinophilic granuloma in the anterior mandible mimicking radicular cyst

    International Nuclear Information System (INIS)

    Lee, Byung Do; Lee, Wan; Lee, Jun; Son, Hyun Jin

    2013-01-01

    Eosinophilic granuloma is a common expression of Langerhans cell histiocytosis and corresponds with typical bone lesions. The radiographic appearance of eosinophilic granuloma in the jaw is variable and not specific. It may resemble periodontitis, radicular cyst, or malignancies. The purpose of this report is to describe the characteristic radiographic features of eosinophilic granuloma of a 39-year-old male. The lesion in the anterior mandible was first diagnosed as radicular cyst because the radiographic findings were ovoid radiolucent lesion with well-defined border. However, careful interpretation revealed a non-corticated border and floating tooth appearance that were the characteristic radiographic features for the differential diagnosis. Early clinical signs of eosinophilic granuloma can occur in the jaw and a bony destructive lesion might be mistaken for periodontitis or an odontogenic cystic lesion; therefore, careful interpretation of radiographs should be emphasized.

  4. Eosinophilic granuloma in the anterior mandible mimicking radicular cyst

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Byung Do; Lee, Wan; Lee, Jun [College of Dentistry, Wonkwang University, Iksan (Korea, Republic of); Son, Hyun Jin [Dept. of Pathology, School of Medicine, Eulji University, Daejeon (Korea, Republic of)

    2013-06-15

    Eosinophilic granuloma is a common expression of Langerhans cell histiocytosis and corresponds with typical bone lesions. The radiographic appearance of eosinophilic granuloma in the jaw is variable and not specific. It may resemble periodontitis, radicular cyst, or malignancies. The purpose of this report is to describe the characteristic radiographic features of eosinophilic granuloma of a 39-year-old male. The lesion in the anterior mandible was first diagnosed as radicular cyst because the radiographic findings were ovoid radiolucent lesion with well-defined border. However, careful interpretation revealed a non-corticated border and floating tooth appearance that were the characteristic radiographic features for the differential diagnosis. Early clinical signs of eosinophilic granuloma can occur in the jaw and a bony destructive lesion might be mistaken for periodontitis or an odontogenic cystic lesion; therefore, careful interpretation of radiographs should be emphasized.

  5. Immunoexpression of interleukin 17, transforming growth factor β1, and forkhead box P3 in periapical granulomas, radicular cysts, and residual radicular cysts.

    Science.gov (United States)

    Andrade, Ana Luiza Dias Leite de; Nonaka, Cassiano Francisco Weege; Gordón-Núñez, Manuel Antonio; Freitas, Roseana de Almeida; Galvão, Hébel Cavalcanti

    2013-08-01

    Different cell types and cytokines have been identified as contributors to the formation of periapical lesions. In this perspective, this study aimed to evaluate the immunoexpression of interleukin (IL)-17, transforming growth factor (TGF)-β1, and the forkhead box P3 (FoxP3) in periapical lesions, correlating them with the type of lesion, the intensity of the inflammatory infiltrate, and the thickness of the cystic epithelial lining. Twenty periapical granulomas (PGs), 20 radicular cysts (RCs), and 20 residual radicular cysts (RRCs) were submitted to immunohistochemical analysis using anti-IL-17, anti-TGF-β1, and anti-FoxP3 antibodies. In comparison with PGs and RCs, RRCs exhibited a lower immunoexpression of IL-17 and TGF-β1 (P = .021 and P periapical lesions. Copyright © 2013 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  6. Reabsorción radicular inflamatoria en sujetos con tratamiento ortodóntico. Cartagena (Colombia

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    Farith González Martínez

    2012-01-01

    Full Text Available Objetivo: Determinar la ocurrencia de Reabsorción Radicular Inflamatoria en sujetos sometidos a movimiento dental con cuatro técnicas de ortodoncia. Materiales y métodos: Estudio de cohorte con seguimiento a un año, evaluando la reabsorción radicular inflamatoria con cuatro técnicas de ortodoncia, a partir de la escala de Levander and Malmgren. Las mediciones se realizaron en 176 dientes, usando tres radiografías periapicales por participante cada tres meses. Los datos fueron analizados a través de proporciones de incidencia. El Riesgo Relativo se utilizó para la asociación entre la presencia de reabsorción y la técnica de ortodoncia, con intervalos de confianza del 95 %. Para la significancia estadística se aplicaron los test de Kruskal Wallis, Mc-Nemar y Fischer. Se realizó un análisis multivariable por regresión logística. Resultados: La incidencia de Reabsorción Radicular fue del 68,2 %, presentándose a los nueve y doce meses. Se observaron cambios radiculares con grado 1 en 8,5 % de los dientes y grado 2 con 2,8 %, siendo laterales los de mayor proporción (6,3%. En los dientes sometidos a la técnica de Arco de canto se encontró un riesgo 3,3 veces mayor en comparación con las técnicas pre-ajustadas. Conclusiones: Existe Reabsorción Radicular en los dientes sometidos a movimiento dental durante el tratamiento de ortodoncia, sin embargo, estos cambios se consideran leves y dependen de la biomecánica utilizada en cada técnica.

  7. Do neurosurgeons subscribe to the guideline lumbosacral radicular syndrome?

    NARCIS (Netherlands)

    P.A.J. Luijsterburg (Pim); A.P. Verhagen (Arianne); S. Braak (Sigrid); C.J.J. Avezaat (Cees); B.W. Koes (Bart)

    2004-01-01

    textabstractBackground: This study presents a survey of the opinion of neurosurgeons on the multidisciplinary clinical guideline 'lumbosacral radicular syndrome'. The aim was to describe to what extent neurosurgeons in the Netherlands endorse the content of this guideline. The guideline was issued

  8. Radicular cyst of maxillary primary tooth: Report of two cases

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    Vinod Vijay Chander

    2014-01-01

    Full Text Available Radicular cyst is one of the most common odontogenic cysts of the jaws, but those arising from primary teeth are very rare. This article reports two such rare cases incidentally affecting deciduous maxillary teeth.

  9. Radicular cyst associated with deciduous molar: A report of a case with an unusual radiographic presentation

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    Sulabha A Narsapur

    2012-01-01

    Full Text Available Radicular cysts arising from deciduous teeth are rare. This article presents a case report of a radicular cyst associated with a mandibular deciduous second molar and with unusual radiographic findings. The second premolar was displaced to the lower border of the mandible, below the first premolar. The management comprised enucleation of the cystic sac under local anesthesia.

  10. The effect of endodontic regeneration medicaments on mechanical properties of radicular dentin

    Science.gov (United States)

    Yassen, Ghaeth H.

    Endodontic regeneration treatment of necrotic immature teeth has gained popularity in recent years. The approach suggests a biological alternative to induce a continuous root development. In this project, three in vitro experiments were conducted to investigate the effect of three medicaments used in endodontic regeneration on mechanical properties and chemical structure of radicular dentin. In the first experiment, we investigated longitudinally the effect of medicaments on the indentation properties of the root canal surface of immature teeth using a novel BioDent reference point indenter. A significant difference in the majority of indentation parameters between all groups was found after one-week and one-month application of medicaments (p double antibiotic paste (DAP) > control > calcium hydroxide [Ca(OH)2]. The four-week exposure of dentin to TAP and DAP caused 43% and 31% increase in total indentation distance outcome, respectively. In the second experiment, we investigated longitudinally the effect of medicaments on the chemical structure of immature radicular dentin by measuring the phosphate/amide I ratios of dentin using Attenuated Total Reflection Fourier Transform Infrared Spectroscopy. Phosphate/amide I ratios were significantly different between the four groups after one week, two weeks and four week application of medicaments (p untreated dentin > DAP-treated dentin > TAP-treated dentin. In the third experiment, we investigated longitudinally the effect of medicaments on root fracture resistance and microhardness of radicular dentin. For the microhardness, the two-way interaction between group and time was significant (pmedicaments caused significant decrease in fracture resistance ranging between 19%-30% after three month application compared to one week application. The three medicaments used in endodontic regeneration caused significant change in the chemical integrity of the superficial radicular dentin and significantly affected the indentation

  11. Arquitetura e dimensão do sistema radicular de sete porta-enxertos de videira no Norte do Estado do Paraná

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    Bordin Ivan

    2003-01-01

    Full Text Available Foi estudada a estrutura do sistema radicular de sete porta-enxertos de videira das cultivares IAC 572, Kobber 5BB, Rupestris du Lot, IAC 313, IAC 766, Ripária do Traviú e 420 A, com cinco anos de idade. As raízes foram expostas por escavação e avaliadas pelo programa SIARCS 3.0. Foi utilizado um diagrama de arquitetura radicular, atribuindo-se notas à conformação do sistema radicular. O 'IAC 572' apresentou a maior extensão de raízes e o '420 A', a menor. Os porta-enxertos não apresentaram diferença quanto à arquitetura do sistema radicular. Os mais vigorosos apresentaram maior proporção de raízes enoveladas.

  12. A Randomized Controlled Trial Evaluating the Effects of Diosmin in the Treatment of Radicular Pain

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    Yinhe Wang

    2017-01-01

    Full Text Available Diosmin has been widely used to treat patients with vascular pain for its potent anti-inflammatory and analgesic effects. To evaluate the therapeutic effects of Diosmin in the treatment of radicular pain, we conducted an investigator-initiated, randomized, active-controlled noninferiority trial between January 1, 2009, and December 1, 2010. Diosmin (50 mg/kg/day was orally administered to treat the radicular pain in 150 patients for one month. Another 150 patients with the same symptom were given 20% 250 ml mannitol (1 g/kg/day for 7 days and dexamethasone (10 mg/day for 3 days intravenously guttae. Short-term relief and long-term relief were measured. Secondary outcomes include improvement in functional and psychological status, return to work, and reduction in anti-inflammatory analgesic drugs intake. Patients treated with oral Diosmin achieved reduction in radicular pain. The total satisfaction rate of Diosmin group was 84.7% [95% confidence interval (CI: 77.9%, 90.0%], and the complete satisfaction rate was 50.7% (95% CI: 42.4%, 58.9%. No statistically significant difference was found between the Diosmin group and the active-control group regarding patient satisfaction. No adverse effects were found during the study period. Our study suggests that clinical application of Diosmin with a dose of 50 mg/kg/day might reduce the radicular pain. This trial is registered with ISRCTN97157037.

  13. Neurosurgeons' management of lumbosacral radicular syndrome evaluated against a clinical guideline

    NARCIS (Netherlands)

    P.A.J. Luijsterburg (Pim); A.P. Verhagen (Arianne); S. Braak (Sigrid); A. Oemraw (Anushka); C.J.J. Avezaat (Cees); B.W. Koes (Bart)

    2004-01-01

    textabstractTo establish to what extent neurosurgeons subscribe to the lumbosacral radicular syndrome (LRS) guideline, and to evaluate their current management of patients with LRS against the guideline. All active neurosurgeons in the Netherlands (n=92) were mailed a questionnaire about the

  14. Quantitative analysis of the epithelial lining architecture in radicular cysts and odontogenic keratocysts

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    Landini Gabriel

    2006-02-01

    Full Text Available Abstract Background This paper describes a quantitative analysis of the cyst lining architecture in radicular cysts (of inflammatory aetiology and odontogenic keratocysts (thought to be developmental or neoplastic including its 2 counterparts: solitary and associated with the Basal Cell Naevus Syndrome (BCNS. Methods Epithelial linings from 150 images (from 9 radicular cysts, 13 solitary keratocysts and 8 BCNS keratocysts were segmented into theoretical cells using a semi-automated partition based on the intensity of the haematoxylin stain which defined exclusive areas relative to each detected nucleus. Various morphometrical parameters were extracted from these "cells" and epithelial layer membership was computed using a systematic clustering routine. Results Statistically significant differences were observed across the 3 cyst types both at the morphological and architectural levels of the lining. Case-wise discrimination between radicular cysts and keratocyst was highly accurate (with an error of just 3.3%. However, the odontogenic keratocyst subtypes could not be reliably separated into the original classes, achieving discrimination rates slightly above random allocations (60%. Conclusion The methodology presented is able to provide new measures of epithelial architecture and may help to characterise and compare tissue spatial organisation as well as provide useful procedures for automating certain aspects of histopathological diagnosis.

  15. Statistical Evaluation of Chronic Apical Periodontitis and Radicular Cysts

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    Baghaei-Naeini F

    2000-05-01

    Full Text Available Up to now, no complete study was carried out about the prevalence and location of periapical granuloma and radicular cysts from the point of view of clinical symptoms (e.g. pain and swelling fistula in Iran. The data was collected from the files available in the Department of Pathology, faculty of Dentistry, Tehran University of Medical Sciences. With a consideration on different therapeutic methods. a proper method was selected. Radicular cyst occurred in 59.3 percent of 324 cases while 45.7 percent were granuloma. The most common incidence of these lesions was in the range of 24-25 years old. The most common location of lesions was the maxillary anterior. Sinus tracts occurred in 74 of all cases. 47.3 percent of these patients have been previously received root canal therapy. It is noticeable that 24 percent of all patients were treated endodontically before surgery. Higher incidence of granuloma occurred in small lesions while cysts were more common in large lesions. 232 of all cases showed one of the clinical symptoms, 16% pain, 35.8% swelling and 22.8% fistula. No symptoms were found in 92 cases.

  16. Atitudes e conhecimento dos consumidores sobre os alimentos irradiados: um inquérito conduzido em Natal, Brasil / Consumer attitudes and knowledge about irradiated foods: a survey conducted in Natal, Brazil

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    André Luiz Barbosa de Lima

    2014-05-01

    Full Text Available O objetivo deste estudo é avaliar as atitudes e o conhecimento dos consumidores sobre os alimentos irradiados. A amostra do estudo correspondeu a 65,52% de mulheres e a média de idade foi 41,82 (D.P.: 14,33 anos. Apenas 66,9% dos consumidores entrevistados consultam a lista de ingredientes no rótulo dos alimentos embalados, e 13,4% destes disseram ter detectado a frase “ALIMENTO TRATADO POR PROCESSO DE IRRADIAÇÃO”. Além disso, 86,6% consideravam que a irradiação torna o alimento inseguro e, portanto, 94,9% destes não consumiriam estes alimentos, assim como 29,6% daqueles que consideraram o contrário. As mulheres apresentaram escore de atitude menos favorável que os homens em relação aos alimentos irradiados. A televisão foi considerada o meio de comunicação mais eficiente para informar sobre os alimentos irradiados. Concluímos que os consumidores do município do Natal carecem de informações sobre a irradiação de alimentos e a aceitação destes produtos depende da forma como são aplicadas as políticas de segurança alimentar e de educação sanitária, inclusive através do uso de fontes de disseminação da informação em massa. As informações contidas nos rótulos de alimentos irradiados são controversas, apesar de serem instrumentos suficientes de detecção de alimentos irradiados por parte destes consumidores. --------------------------------------------------------------------------- The aim of this study is to assess the attitudes and knowledge of consumers about irradiated foods. The study sample corresponded to 65.52% women and the mean age was 41.82 (SD: 14.33 years. Only 66.9% of respondents consumers consult the list of ingredients on the label of packaged foods, and 13.4% of them said they had detected the phrase “FOOD TREATED BY IRRADIATION PROCESS.” Furthermore, 86.6% considered that irradiation becomes unsafe food and thus 94.9% of those not consume these foods, as well as 29.6% of those who

  17. Assessment of the bacteria reduction in the infected root canal irradiated with diode laser; Avaliacao da reducao bacteriana em conduto radicular infectado e irradiado com laser de diodo. Estudo in vitro

    Energy Technology Data Exchange (ETDEWEB)

    Radaelli, Claudia Amaral Rabello de Mello

    2002-07-01

    High success rates are achieved in conventional endodontic treatment of vital pulp teeth. However, in cases of non-vital pulp, a decrease in the rate of success occurs due to difficulties in achieving a complete disinfection of the root canals system. Some bacteria, such as Enterococcus faecalis, are frequently found in cases of endodontic treatment failure due to their high resistance to the conventional endodontic treatment. The aim of this study was to evaluate the efficiency of a high power diode laser irradiation in bacterial reduction of contaminated canals associated with dressing compose by calcium hydroxide paste propylene glycol and camphorated paramonochlorophenol. Eighty-two root canals were infected in vitro with Enterococcus faecalis in a concentration of 1x10{sup 8} CFU/ml. Specimens were high intensity irradiated with a diode laser model Opus 10, at a wavelength of 830 nm. Two different parameters were employed in continuous mode: 3 W and 2,5 W with a 360 {mu}m optical fiber at an angle of approximately 5 degrees respect to the dentine surface during 5 seconds, in 4 applications, with 20 seconds intervals among them. After these proceedings specimens were vortexed in peptone water and dilutions performed. Aliquots of the dilution were plated on m-Enterococcus agar, incubated, and the Colonies Forming Units (CFU) of ali groups was counted. The results showed a significant reduction of bacteria on ali groups after laser irradiation. A high reduction rate was achieved: 98.5% immediately after the laser irradiation; 48 hours after, the reduction was of 96,73% and, finally, a 100% reduction was achieved through the combination of laser irradiation and a long lasting dressing of calcium hydroxide paste, propylene glycol and camphorated paramonochlorophenol. High rates of bacteria reduction were achieved using the parameter of 3 W in continuous mode with the power of 2,9473 KW/cm{sup 2}. The temperature was monitored with a K-pipe thermocouple placed at the periapical point which width measured 1 mm, approximately. The maximum temperature variation was 7.45 deg C. Under electron microscope scanning, the control groups showed areas with smear layer covering the dentinal walls. The laser irradiated groups showed a smooth, uniform, clean appearance, with small areas of closed dentinal tubules without cracking alternately with areas of exposed open dentinal tubules. Some parts showed fusion of the dentinal mass (groups irradiated with 3 W). In groups where calcium hydroxide was associated with laser irradiation remains were found over the irradiated surface and, in many parts, the dentinal tubules could not be observed. The use of high intensity diode laser at 830 nm proved to be efficient and able to promote reduction in the Enterococcus faecalis population in the infected root canals. (author)

  18. Immunoexpression of tryptase-positive mast cells in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Costa Neto, H; de Andrade, A L D L; Gordón-Núñez, M A; Freitas, R de A; Galvão, H C

    2015-08-01

    To evaluate and compare the immunoexpression of tryptase in samples of periapical granulomas (PGs) and radicular cysts (RCs) correlating it with the type of lesion, localization, intensity of the inflammatory infiltrate and thickness of the cystic epithelial lining, in order to gain insight into the phlogistic role of these cells in the lesions studied. Twenty-five PGs and twenty-five RCs obtained from human teeth without endodontic treatment were submitted to morphological and immunohistochemical analysis using anti-tryptase antibody. Mast cells were identified and counted in three regions: intra-epithelial, central/superficial and deep portions. The data were analysed using the Mann-Whitney U-test (P periapical lesions in a larger number in periapical granulomas than in radicular cysts, in both central/superficial and deep regions. © 2014 International Endodontic Journal. Published by John Wiley & Sons Ltd.

  19. Estudio comparativo de la cavidad de acceso radicular en conductos curvos con limas de níquel-titanio y taladros de acero inoxidable

    OpenAIRE

    Oncins Rodríguez, J.; Pumarola Suñé, José; Canalda Sahli, Carlos

    2005-01-01

    El propósito de este estudio fue comparar la cantidad de dentina radicular removida y evaluar el mantenimiento de la forma del conducto tras la instrumentación de los dos tercios coronarios radiculares, utilizando instrumentos de acero inoxidable (taladros de Gates Glidden) y de níqueltitanio (limas GT Flare y limas Orifice Shaper). Un total de 42 dientes humanos extraídos con conductos radiculares curvos fueron divididos en tres grupos. Los conductos se instrumentaron mecánicamente usando ta...

  20. The Inflammatory Radicular Cysts Have Higher Concentration of TNF-α in Comparison to Odontogenic Keratocysts (Odontogenic Tumour

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    Vladimir Jurisic

    2007-01-01

    Full Text Available TNF-α is a pleiotropic cytokine that is considered as a primary modifier of inflammatory and immune reaction in response to various inflammatory diseases and tumour. We investigated levels of TNF-α in 43 radicular cysts and 15 odontogenic keratocysts, obtained from patients undergoing surgery, under local anaesthesia, and after aspiration of cystic fluid from non-ruptured cysts. TNF-α is elevated in both cysts’ fluid, but higher values were found in radicular cysts in comparison to keratocysts. The significantly higher concentration of TNF-α was associated with smaller radicular cysts, higher protein concentration, higher presence of inflammatory cells in peri cystic tissues, and the degree of vascularisation and cysts wall thickness (Mann-Whitney U-test, p<0.05. No correlation was found based on these parameters in odontogenic keratocyst, but all cysts have detectable concentrations of TNF-α. We here for the first time present that a difference in the concentration of TNF-α exists between these two cystic types.

  1. Piezosurgery versus conventional surgery in radicular cyst enucleation.

    Science.gov (United States)

    Kocyigit, Ismail Doruk; Atil, Fethi; Alp, Yunus Emre; Tekin, Umut; Tuz, Hakan H

    2012-11-01

    This study compared the use of piezosurgery and conventional surgery in radicular cyst enucleation. The study was conducted with 29 patients who were radiologically and cytologically prediagnosed with radicular cysts in the jaw region. Nineteen patients were treated using piezosurgery, and 10 were treated using conventional surgical procedures. Surgical procedures were evaluated according to the following criteria: hemorrhage, soft-tissue damage, manipulation complexity, major perforation areas on the enucleated cyst tissue, and approximate operation duration. Patients were monitored postoperatively and evaluated for hemorrhaging at 24, 48, and 72 hours following surgery. Follow-up was conducted to check for recurrences and ranged from 5 to 24 months. No complications were observed in any of the 20 patients treated using piezosurgery, although the duration of surgery was longer than expected. Of the 10 patients treated using conventional methods, hemorrhaging that affected the operation occurred in 3 cases, perforation of the cyst epithelium and difficulties in enucleation occurred in 5 cases, postoperative hemorrhage occurred in 2 cases, and recurrence was observed in 2 cases. Piezosurgery may be considered effective in procedures such as enucleation that require sensitive manipulation, despite the increase in the length of the overall surgical procedure. Given the results of the present study and the current lack of information in the literature regarding postoperative pain, infection, and long-term success rates associated with the use of piezosurgery in cyst enucleation, further study in this area is recommended.

  2. Effects of neural mobilization on pain, straight leg raise test and disability in patients with radicular low back pain

    OpenAIRE

    Haris Čolaković; Dijana Avdić

    2013-01-01

    Introduction: Radicular low back pain is a disorder involving the dysfunction of the lumbosacral nerve roots. Clinical rehabilitation approaches for low back pain include kinesiotherapy, and physical therapyprocedures: ice , rest , heat, ultrasound, TENS, but evidences regarding their effectiveness are lacking. The purpose of this study was to determine if nerve mobilization brings better improvements in pain, SLR testand functional disability in patients with radicular low back pain compared...

  3. Sistema radicular e produtividade de soqueiras de cana-de-açúcar sob diferentes quantidades de palhada

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    Gisele Silva de Aquino

    2015-12-01

    Full Text Available Resumo: O objetivo deste trabalho foi avaliar o efeito de diferentes quantidades de palhada sobre o sistema radicular e a produtividade da cana-de-açúcar (Saccharum officinarum, de primeira e segunda soqueiras, em Latossolo Vermelho eutroférrico. Seis tratamentos foram avaliados : 0, 5 (25%, 10 (50%, 15 (75% e 20 Mg ha-1 (100% de palhada e cana-queimada, na primeira e segunda soqueiras. Utilizou-se a cana-de-açúcar 'SP80-1816'. Avaliou-se a massa de raízes a 0,45 e 0,75 m de distância da linha de plantio, até 0,60 m de profundidade. Na primeira soqueira, os tratamentos com 50, 75 e 100% de palhada proporcionaram maior massa radicular até 0,20 m de profundidade, em comparação aos tratamentos cana-queimada, 0 e 5 Mg ha-1 (25% de palhada. Os tratamentos com 50 e 75% de palhada proporcionaram produtividades 43% maiores do que a da cana-queimada (110 Mg ha-1. O tratamento com 10 Mg ha-1 (50% foi suficiente para proporcionar aumento da massa radicular e da produtividade da cana-de-açúcar. O sistema radicular e a produtividade da cana-de-açúcar são favorecidos pela mudança do sistema de colheita de cana-queimada para o de cana sob palhada.

  4. Comparison of TNF-α and TGF-β1 level in radicular cyst and odontogenic keratocyst fluid and its association with histopathological findings

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    Safoura Seifi

    2013-09-01

    Full Text Available Background: TNF-α is a multifunctional proinflammatory cytokine and TGF-β1 is a secretory protein controlling epithelial proliferation and differentiation. Keratocyst presents an aggressive behavior and a growth mechanism different from that of radicular cyst. Aim: In this line, the present study aimed at evaluating TNF-α and TGF-β1 level and its association with histopathological findings in the two odontogenic lesions of different origins. Materials and Methods: In this case-control study, aspirated fluid of 15 cases of radicular cyst and 15 cases of keratocyst were investigated using ELISA method. The grade of inflammation and the mean number of blood vessels in three microscopic fields were provided with a magnification of 40 times on microscope slides. T-test, x2, Mann Whitney, and Pearson correlation tests were used for the comparison of TNF-α and TGF-β1 levels in the mentioned lesions and the association between cytokine levels and grade of inflammation and angiogenesis.Results: TNF-α and TGF-β1 were observed in aspirated fluid of all radicular cysts and keratocysts. Levels of TNF-α and TGF-β1 were found to be 6.72 ± 2.985 and 5.882 ± 2.985 respectively in radicular cyst fluid and 24.759 ± 94.849 and 63.38 ± 30.069 in keratocyst fluid however, no statistically significant difference was observed in terms of TNF-α (P=0.450 increasing trend in TNF-α level in radicular cyst and keratocyst was accompanied by increased inflammation and angiogenesis (P<0.001 and P=0.001. Conclusion: TNF-α and TGF-β1 are involved in the pathogenesis of radicular cyst and keratocyst. TGF-β1 level was higher in radicular cyst when compared with keratocyst however, TNF-α level was similar in the two lesions. A positive correlation was found between TNF-α level and grade of inflammation and angiogenesis.

  5. Comparison of Morphine and Tramadol in Transforaminal Epidural Injections for Lumbar Radicular Pain

    Science.gov (United States)

    2013-01-01

    Background Transforaminal epidural steroid injections are known to reduce inflammation by inhibiting synthesis of various proinflammatory mediators and have been used increasingly. The anti-inflammatory properties of opioids are not as fully understood but apparently involve antagonism sensory neuron excitability and pro-inflammatory neuropeptide release. To date, no studies have addressed the efficacy of transforaminal epidural morphine in patients with radicular pain, and none have directly compared morphine with a tramadol for this indication. The aim of this study was to compare morphine and tramadol analgesia when administered via epidural injection to patients with lumbar radicular pain. Methods A total of 59 patients were randomly allocated to 1 of 2 treatment groups and followed for 3 months after procedure. Each patient was subjected to C-arm guided transforaminal epidural injection (TFEI) of an affected nerve root. As assigned, patients received either morphine sulfate (2.5 mg/2.5 ml) or tramadol (25 mg/0.5 ml) in combination with 0.2% ropivacaine (1 ml). Using numeric rating scale was subsequently rates at 2 weeks and 3 months following injection for comparison with baseline. Results Both groups had significantly lower mean pain scores at 2 weeks and at 3 months after treatment, but outcomes did not differ significantly between groups. Conclusions TFEI of an opioid plus local anesthetic proved effective in treating radicular pain. Although morphine surpassed tramadol in pain relief scores, the difference was not statistically significant. PMID:23862000

  6. Fractura patológica de la mandíbula asociada a quiste radicular: Reporte de 3 casos clínicos Mandibular pathologic fracture associated with radicular cyst: Report of three clinical cases

    Directory of Open Access Journals (Sweden)

    J. Bouguila

    2008-08-01

    Full Text Available Introducción. El quiste radicular es el quiste más común de los maxilares. Su tamaño puede variar desde una lesión que abarca el proceso alveolar hasta uno extenso que oblitera el espacio antral maxilar o causa una fractura patológica mandibular. Reporte de casos. Se reportan tres casos con fractura patológica mandibular asociados a quiste radicular ocurridos después de trauma facial. El diagnóstico fue sugerido por un estudio clínico, radiografía panorámica y confirmado por el estudio histopatológico de la pieza operatoria. El tratamiento consistió en enucleación quística seguido por inmovilización de fragmentos con osteosíntesis o bloqueo intermaxilar. El resultado clínico y radiológico a corto plazo fue favorable. Discusión. Se discuten aspectos propios de la patología y su terapia. Conclusión. El éxito del tratamiento depende de una adecuada terapia en que sus principios más importantes son la remoción de la lesión mediante enucleación y una fijación estable.Introduction. Radicular cyst is the most common cyst of the oral cavity. It may range in size from a small periapical lesion to one that can obliterate the antral space or cause mandibular fracture. Case reports. We report three cases of radicular cyst complicated by mandibular fracture that occurred after maxillofacial trauma. The diagnosis was strongly suggested by panoramic radiography and confirmed by pathology examination of the operative specimen. Treatment consisted in cyst enucleation followed by immobilization of fragments by osteosynthesis or maxillomandibular fixation. The clinical and radiologic outcome was favorable. Discussion. The particularities and treatment are discussed. Conclusion. Treatment success is dependent on adequate therapy, the principles of which are removing the lesion and providing stable fixation.

  7. Human radicular veins : regulation of venous reflux in the absence of valves

    NARCIS (Netherlands)

    van der Kuip, M; Hoogland, P V; Groen, R J

    1999-01-01

    In the literature it is generally assumed that venous reflux within the radicular veins is prevented by the presence of bicuspid valves and narrowing of the transdural part of these vessels. Recently, we performed a human cadaver study of the internal vertebral venous plexus. Surprisingly, a large

  8. Expression of interleukin-33 and its receptor ST2 in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Velickovic, Milena; Pejnovic, Nada; Petrovic, Renata; Mitrovic, Slobodanka; Jeftic, Ilija; Kanjevac, Tatjana; Lukic, Aleksandra

    2016-01-01

    Interleukin-33 (IL-33) is a recently identified cytokine belonging to the IL-1 family and ligand for the IL-1 receptor-related protein ST2. IL-33/ST2 signaling plays a critical role in allergy, autoimmunity, and chronic inflammatory disorders, but its role in the pathogenesis of periapical lesions is unknown. We aimed to investigate the expression patterns of IL-33 and ST2 in human periapical lesions. Periapical lesions (n = 36) and healthy periapical tissues (n = 10) were evaluated by immunohistochemistry using antibodies specific for human IL-33 and ST2. Lesion samples were further analyzed by double immunofluorescence to assess IL-33/ST2 co-expression. The numbers of IL-33- and ST2-positive fibroblasts were significantly higher in periapical lesions compared to healthy periapical tissues (both P 0.05). There were no significant differences in the numbers of IL-33- and ST2-positive fibroblasts and endothelial cells between periapical granulomas and radicular cysts (all P > 0.05). Similarly, numbers of ST2-positive mononuclear cells did not differ between periapical granulomas and radicular cysts (P > 0.05). The majority of epithelial cells in radicular cysts were IL-33 positive, while the small proportion of epithelial cells was ST2 positive. Double immunofluorescence analysis revealed IL-33/ST2 co-expression in fibroblasts and endothelial cells. IL-33 and ST2 are expressed in periapical granulomas and radicular cysts. Increased numbers of IL-33- and ST2-positive fibroblasts in periapical lesions when compared to healthy periapical tissues suggest that IL-33/ST2 signaling may be involved in periapical inflammation and tissue fibrosis. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  9. Estudo clínico da eficácia do bloqueio anestésico radicular transforaminal no tratamento da radiculopatia lombar Estudio clínico de la eficacia del bloqueo anestésico radicular transforaminal en el tratamiento de la radiculopatía lumbar Clinical study on the efficacy of transforaminal radicular block in lumbar radiculopathy treatment

    Directory of Open Access Journals (Sweden)

    Fabiano Fonseca Rodrigues de Souza

    2011-01-01

    Full Text Available OBJETIVO: O objetivo deste estudo é avaliar a eficácia da injeção transforaminal nos pacientes com dor radicular devido à hérnia de disco ou estenose foraminal lombar por meio de estudo prospectivo randomizado. MÉTODOS: Foram avaliados 61 pacientes com quadro de radiculopatia nos membros inferiores. Esses pacientes foram divididos em dois grupos escolhidos aleatoriamente. Desses, 32 foram submetidos à injeção de corticosteroides e 29 foram submetidos à injeção salina. O período de acompanhamento foi de 12 meses. Para avaliar os resultados aplicamos a Escala Analógica Visual de Dor (EAV e o Índice Oswestry (ODI. RESULTADOS: Houve melhora significativa da intensidade de dor (p OBJETIVO: El presente estudio tuvo como objetivo evaluar la eficacia de la inyección transforaminal en pacientes con dolor radicular, debido a la hernia discal lumbar o estenosis foraminal, mediante un estudio prospectivo y aleatorizado. MÉTODOS: Se analizó un total de 61 pacientes con cuadro de radiculopatía en miembros inferiores. Estos pacientes fueron divididos en dos grupos seleccionados al azar. De ellos, 31 fueron sometidos a inyecciones de corticoides y a 29 se les aplicaron inyecciones de suero fisiológico. El período de seguimiento fue de 12 meses. Para evaluar los resultados se les aplicó la Escala Visual Analógica del dolor (EAV y el Índice de Oswestry (ODI, sigla en inglés. RESULTADOS: Hubo una mejora significativa en la intensidad del dolor (p OBJECTIVE: To assess the efficacy of corticosteroid injections in patients with sciatica due to lumbar disc herniation or lumbar foraminal stenosis by a prospective randomized study. METHODS: There were analyzed 61 patients with sciatica due to lumbar disc degeneration. These patients were divided into two groups randomly chosen to radicular blocks with saline solution or corticosteroids. Thirty-one of these patients were submitted to corticosteroids radicular block and 29 patients were submitted

  10. Study of the relationship between mononuclear inflammatory infiltrate and Ki-67 and basement membrane and extracellular matrix protein expression in radicular cysts.

    Science.gov (United States)

    Mourão, R V C; Júnior, E C Pinheiro; Barros Silva, P G; Turatti, E; Mota, M R L; Alves, A P N N

    2016-05-01

    To evaluate the relationship between mononuclear inflammatory infiltrate and the expression of a proliferative immunomarker (Ki-67) as well as to evaluate basement membrane and extracellular matrix proteins (laminin and collagen type IV) in radicular cysts and dentigerous cysts (DC). Immunohistochemical analyses were performed in heavily inflamed radicular cysts (HIRC), slightly inflamed radicular cysts (SIRC) and DC (n = 20) using Ki-67 (Dako(®) , 1 : 50), anticollagen type IV (DBS(®) , 1 : 40) and antilaminin (DBS(®) , 1 : 20). The data were analysed using anova/Tukey's test (Ki-67) and Kruskal-Wallis/Dunn's test (collagen type IV and laminin) (P collagen type IV in the basement membrane of the SIRC group was significantly more continuous (P = 0.0475) than in the HIRC group. DC had significantly less collagen type IV in extracellular matrix immunoexpression than HIRC and SIRC (P = 0.0246). Laminin was absent in the basement membrane in the SIRC and DC groups, and the extracellular matrix of the HIRC was weak and punctate. The presence of inflammatory factors in the radicular cyst wall modified the expression of proliferation factors in the epithelial lining and the expression of collagen type IV and laminin in the basement membrane, but did not modify extracellular matrix behaviour in radicular cysts. © 2015 International Endodontic Journal. Published by John Wiley & Sons Ltd.

  11. Management of radicular cysts using platelet-rich fibrin and bioactive glass: a report of two cases.

    Science.gov (United States)

    Zhao, Jiing-Huei; Tsai, Chung-Hung; Chang, Yu-Chao

    2014-07-01

    Platelet-rich fibrin (PRF) created by Choukroun's protocol concentrates most platelets and leukocytes from a blood harvest into a single autologous fibrin biomaterial. However, no current data is available concerning the use of PRF for the treatment of periapical lesions. Two cases of radicular cysts were reported using an interdisciplinary approach, including regular endodontic therapy followed by surgical management with PRF and bioactive glass. Two cases of radicular cysts presented as an incidental radiographic finding, appearing as an apical radiolucency with well-circumscribed sclerotic borders. After regular endodontic retreatment, cystic lining/granulation tissues were enucleated and the periradicular bony defect was grafted using PRF and bioactive glass. Then, PRF was applied to serve as a membrane over the grafted defects. Recall periapical radiographs of Case 1 and cone beam computer tomography of Case 2 showed satisfactory healing of the periapical pathosis. In Case 2, the bony defect appeared completely healed at 4 months surgical reentry and the new bone was clinically very dense and mature. The results of these case reports show that the combination of PRF and bioactive glass is an effective modality of regenerative treatment for radicular cysts. Copyright © 2012. Published by Elsevier B.V.

  12. Distinct Th1, Th2 and Treg cytokines balance in chronic periapical granulomas and radicular cysts.

    Science.gov (United States)

    Teixeira-Salum, Tatiana Beber; Rodrigues, Denise Bertulucci Rocha; Gervásio, Aurélia M; Souza, Cássio J A; Rodrigues, Virmondes; Loyola, Adriano Motta

    2010-03-01

    Periapical lesions are a host response that involves immune reaction to prevent dissemination of bacteria from an infected root canal. The purpose of this study was to evaluate the levels of nitric oxide (NO), IL-4, TGF-beta, tumor necrosis factor-alpha (TNF-alpha), and interferon-gamma (IFN-gamma) in chronic periapical lesions and to determine their possible association with clinical and radiographic parameters. Seventeen human radicular cysts and 30 periapical granulomas were used in this study. Cytokines and NO were assessed by enzyme-linked immunosorbent assay and by the Griess reaction respectively confirmed by immunohistochemical. TNF-alpha and IFN-gamma were detected in 10% of granulomas and in 41.2% and 70% of radicular cysts. IL-4 was reactive in 24% of cysts, and TGF-beta was positive in all samples. Patients with tenderness showed significantly higher levels of IFN-gamma and IL-4 (P Periapical granulomas display a regulatory environment characterized by high TGF-beta and low inflammatory cytokine levels, while radicular cysts has mist Th1 and Th2 inflammatory reaction with the presence of IFN-gamma, TNF-alpha, and IL-4.

  13. Management of radicular cysts using platelet-rich fibrin and bioactive glass: A report of two cases

    Directory of Open Access Journals (Sweden)

    Jiing-Huei Zhao

    2014-07-01

    Full Text Available Platelet-rich fibrin (PRF created by Choukroun’s protocol concentrates most platelets and leukocytes from a blood harvest into a single autologous fibrin biomaterial. However, no current data is available concerning the use of PRF for the treatment of periapical lesions. Two cases of radicular cysts were reported using an interdisciplinary approach, including regular endodontic therapy followed by surgical management with PRF and bioactive glass. Two cases of radicular cysts presented as an incidental radiographic finding, appearing as an apical radiolucency with well-circumscribed sclerotic borders. After regular endodontic retreatment, cystic lining/granulation tissues were enucleated and the periradicular bony defect was grafted using PRF and bioactive glass. Then, PRF was applied to serve as a membrane over the grafted defects. Recall periapical radiographs of Case 1 and cone beam computer tomography of Case 2 showed satisfactory healing of the periapical pathosis. In Case 2, the bony defect appeared completely healed at 4 months surgical reentry and the new bone was clinically very dense and mature. The results of these case reports show that the combination of PRF and bioactive glass is an effective modality of regenerative treatment for radicular cysts.

  14. Análise comparativa da distribuição de tensões em incisivo central superior, restaurado com diferentes sistemas de pinos intra-radiculares

    OpenAIRE

    Oliveira, Luana Cristina Araújo de [UNESP

    2002-01-01

    Neste trabalho é proposto analisar a distribuição de tensões produzidas na dentina radicular do incisivo central superior restaurado com diferentes sistemas de pinos intra-radiculares, através dos Métodos de Fotoelasticidade e Elementos Finitos. Esta análise foi realizada para os seguintes sistemas de pinos intra-radiculares: fibra de carbono, fibra de vidro, zircônio, aço inoxidável, titânio e metálico fundido (Liga de Cu-Al), o dente hígido foi utilizado como controle. Em ambos método foi c...

  15. Conservative treatment in patients with an acute lumbosacral radicular syndrome: design of a randomised clinical trial [ISRCTN68857256

    Directory of Open Access Journals (Sweden)

    Peul Wilco C

    2004-11-01

    Full Text Available Abstract Background The objective is to present the design of randomised clinical trial (RCT on the effectiveness of physical therapy added to general practitioners management compared to general practitioners management only in patients with an acute lumbosacral radicular syndrome (also called sciatica. Methods/Design Patients in general practice diagnosed with an acute (less than 6 weeks lumbosacral radicular syndrome and an age above 18 years are eligible for participation. The general practitioners treatment follows their clinical guideline. The physical therapy treatment will consist of patient education and exercise therapy. The primary outcome measure is patients reported global perceived effect. Secondary outcome measures are severity of complaints, functional status, health status, fear of movement, medical consumption, sickness absence, costs and treatment preference. The follow-up is 52 weeks. Discussion Treatment by general practitioners and physical therapists in this study will be transparent and not a complete "black box". The results of this trial will contribute to the decision of the general practitioner regarding referral to physical therapy in patients with an acute lumbosacral radicular syndrome.

  16. Th1 and Th2-like protein balance in human inflammatory radicular cysts and periapical granulomas.

    Science.gov (United States)

    de Carvalho Fraga, Carlos Alberto; Alves, Lucas Rodrigues; de Sousa, Adriana Alkmim; de Jesus, Sabrina Ferreira; Vilela, Daniel Nogueira; Pereira, Camila Santos; Batista Domingos, Patrícia Luciana; Viana, Agostinho Gonçalves; Jham, Bruno Correia; Batista de Paula, Alfredo Maurício; Sena Guimarães, André Luiz

    2013-04-01

    Chronic dental periapical lesions result from chronic inflammation of periapical tissues caused by continuous antigenic stimulation from infected root canals. Recent findings have suggested that T helper (Th) 1 and Th2-like cytokines are important in the pathogenesis of chronic periapical inflammatory diseases. However, the mechanisms regulating these immunoinflammatory pathways have not been fully elucidated. Thus, the aim of this study was to evaluate interleukin (IL)-4, IL-12, and interferon γ (IFN-γ) protein levels in human radicular cysts and periapical granulomas. Archived samples of cysts (n = 52) and granulomas (n = 27) were sectioned and submitted to immunohistochemistry to evaluate the tissue expression of IL-4, IL-12, and IFN-γ. The data were analyzed using the Mann-Whitney U test (P cysts. IL-4 expression was stronger in periapical granulomas than in radicular cysts. IL-12 was not detected in any of the samples. Our study showed that IFN-γ protein levels are increased in radicular cysts, whereas IL-4 expression is stronger in samples of periapical granulomas. Further studies are necessary to elucidate the signaling pathways mediated by these cytokines and to facilitate the development of more effective periapical disease management strategies. Copyright © 2013 American Association of Endodontists. All rights reserved.

  17. The association between Modic changes and pain during 1-year follow-up in patients with lumbar radicular pain

    International Nuclear Information System (INIS)

    Schistad, Elina Iordanova; Roee, Cecilie; Espeland, Ansgar; Rygh, Lars Joergen; Gjerstad, Johannes

    2014-01-01

    To examine whether Modic changes influence pain during a 1-year follow-up in patients with lumbar radicular pain. A total of 243 patients with lumbar radicular pain due to disc herniation were recruited from two hospitals in Norway and followed up at 6 weeks, 6 months, and 12 months. On baseline lumbar magnetic resonance images, two observers independently evaluated Modic changes (types I-III; craniocaudal size 0-3). Outcomes were sensory pain (McGill Pain Questionnaire), back and leg pain (visual analogue scale, VAS). Association between Modic type and outcomes was explored with a mixed model and then by two-way analysis of variance (ANOVA) at each time point with Modic and treatment groups (surgical, n = 126; nonsurgical, n = 117) as fixed factors, adjusted for disc degeneration, age, sex, smoking, and duration of radicular pain. Modic size was also analyzed using ANOVA. Pain scores had decreased significantly at 1-year follow-up. Modic type was significantly related to McGill sensory scores (mixed model: p = 0.014-0.026; ANOVA: p = 0.007 at 6 weeks), but not to VAS back pain or VAS leg pain scores. At 6 weeks, the mean McGill sensory score was higher in Modic I than in Modic II-III patients (p = 0.003) and in patients without Modic changes (p = 0.018). Modic size L1-S1 was not associated with pain outcomes. Patients with lumbar radicular pain have a substantial pain reduction during 1-year follow-up, but Modic type I changes may imply a slower initial decrease in sensory pain. (orig.)

  18. The association between Modic changes and pain during 1-year follow-up in patients with lumbar radicular pain

    Energy Technology Data Exchange (ETDEWEB)

    Schistad, Elina Iordanova; Roee, Cecilie [Oslo University Hospital, Department of Physical Medicine and Rehabilitation, Ullevaal, Nydalen, Postbox 4956, Oslo (Norway); University of Oslo, Faculty of Medicine, Oslo (Norway); Espeland, Ansgar [Haukeland University Hospital, Department of Radiology, Bergen (Norway); University of Bergen, Section for Radiology, Department of Clinical Medicine, Bergen (Norway); Rygh, Lars Joergen [Haukeland University Hospital, Department of Anesthesiology, Bergen (Norway); Gjerstad, Johannes [National Institute of Occupational Health, Oslo (Norway); University of Oslo, Department of Molecular Biosciences, Oslo (Norway)

    2014-09-15

    To examine whether Modic changes influence pain during a 1-year follow-up in patients with lumbar radicular pain. A total of 243 patients with lumbar radicular pain due to disc herniation were recruited from two hospitals in Norway and followed up at 6 weeks, 6 months, and 12 months. On baseline lumbar magnetic resonance images, two observers independently evaluated Modic changes (types I-III; craniocaudal size 0-3). Outcomes were sensory pain (McGill Pain Questionnaire), back and leg pain (visual analogue scale, VAS). Association between Modic type and outcomes was explored with a mixed model and then by two-way analysis of variance (ANOVA) at each time point with Modic and treatment groups (surgical, n = 126; nonsurgical, n = 117) as fixed factors, adjusted for disc degeneration, age, sex, smoking, and duration of radicular pain. Modic size was also analyzed using ANOVA. Pain scores had decreased significantly at 1-year follow-up. Modic type was significantly related to McGill sensory scores (mixed model: p = 0.014-0.026; ANOVA: p = 0.007 at 6 weeks), but not to VAS back pain or VAS leg pain scores. At 6 weeks, the mean McGill sensory score was higher in Modic I than in Modic II-III patients (p = 0.003) and in patients without Modic changes (p = 0.018). Modic size L1-S1 was not associated with pain outcomes. Patients with lumbar radicular pain have a substantial pain reduction during 1-year follow-up, but Modic type I changes may imply a slower initial decrease in sensory pain. (orig.)

  19. Analysis of mandibular second molars with fused roots and shallow radicular grooves by using micro-computed tomography.

    Science.gov (United States)

    Amoroso-Silva, Pablo; De Moraes, Ivaldo Gomes; Marceliano-Alves, Marilia; Bramante, Clovis Monteiro; Zapata, Ronald Ordinola; Hungaro Duarte, Marco Antonio

    2018-01-01

    This study aimed to describe the morphological and morphometric aspects of fused mandibular second molars with radicular shallow grooves using micro-computed tomography (CT). Eighty-eight mandibular second molars with fused roots were scanned in a micro-CT scanner at a voxel size of 19.6 μm. After reconstruction, only molars without C-shaped roots and presenting shallow radicular grooves were selected. 30 molars were chosen for further analysis. Canal cross-sections were classified according to Fan's modified classification (C1, C2, C3, and C4) and morphometric parameters at the apical region, examination of accessory foramina and tridimensional configuration were evaluated. Three-dimensional reconstructions indicated a higher prevalence of merging type ( n = 22). According to Fan's modified classification, the C4 configuration was predominant in the 3 apical mm. Roundness median values revealed a more round-shaped canals at 3 mm (0.72) than at 2 (0.63) and 1 (0.61) mm from the apex. High values of major and minor diameters were observed in the canals of these evaluated sections. In addition, few accessory apical foramina were observed at 1 and 2 mm from the apex. The average distance between last accessory foramina and the anatomic apex was 1.17 mm. A less complex internal anatomy is found when a mandibular second molar presents fused roots with shallow radicular grooves. The merging type canal was frequently observed. Moreover, the C4 configuration was predominant at a point 3 mm from the apex and presented rounded canals, large apical diameters, and few accessory foramina. The cervical and middle thirds presented C3 and C1 canal configurations most frequently. A minor morphological complexity is found when fused mandibular second molars present shallow radicular grooves.

  20. Effect of different irrigation protocols on the radicular dentin interface and bond strength with a metacrylate-based endodontic sealer.

    Science.gov (United States)

    Gonçalves, Lisandro; Silva-Sousa, Yara Teresinha Correa; Raucci Neto, Walter; Teixeira, Cleonice Silveira; Sousa-Neto, Manoel Damião; Alfredo, Edson

    2014-06-01

    This study assessed the influence of different endodontic chemical substances on the adhesion of the Epiphany SE/Resilon system (with and without resinous solvent) to radicular dentin walls, using the push-out test and scanning electron microscopy (SEM). Forty-eight root canals of human canines were prepared biomechanically with ProTaper rotary files (crown-down technique) and the radicular dentin was treated with either 17% EDTA, 2% chlorhexidine gel (CHX) or 2.5% NaOCl (control). The root canals were filled with Resilon cones and Epiphany SE sealer with and without resinous solvent. Six groups of eight canals each had their roots sectioned transversally to obtain 1-mm thick slices. Data were subjected to statistical analysis by ANOVA and Tukey's tests. The specimens treated with 17% EDTA (1.59 ± 0.91) presented higher bond strength (P Treatment of root canal walls with 17% EDTA, and addition of a resinous solvent to Epiphany SE produced the highest adhesion to radicular dentin. © 2014 Wiley Periodicals, Inc.

  1. Morphological alterations on human radicular dentin after exposure to different fruit juice drinks = Alterações morfológicas na dentina radicular após exposição a diferentes sucos de fruta

    Directory of Open Access Journals (Sweden)

    Zandim, Daniela Leal

    2011-01-01

    Conclusão: Com base na metodologia utilizada, pode-se concluir que os diferentes sucos de fruta não promoveram alterações significativas na morfologia da dentina radicular apesar da realização subsequente de procedimentos de escovação

  2. Frequencies of different peripheral nervous system pathologies among Cases of Lumbar Radicular Pain using Electrodiagnostic Studies

    International Nuclear Information System (INIS)

    Ayaz, S.; Waheed, A.; Ali, L.

    2014-01-01

    Objective: to discover the spectrum of diagnoses on nerve conduction studies/ Electromyography in patients with lumbar radicular pain, test preponderance of the commonest pathology and correlate commonest pathology with age > 50 years, gender and unilateral involvement. Study design: A descriptive cross-sectional study of 539 patients. Place and Duration of the study: the department of Electrodiagnostic studies, Armed Forces Institute of Rehabilitation Medicine, Rawalpindi from January 2012 to December 2012. Material and methods: using non-probability consecutive sampling 539 patients referred with complaints of lumbar radicular pain were subjected to electrodiagnostic evaluation for presence of lumbosacral radiculopathy, polyneuropathy, sciatic nerve injury or a combination of these. The preponderance of commonest pathology was tested statistically. The frequencies were then related statistically to age > 50 years, gender and unilateral or bilateral involvement. Result: A total of 539 patients (age:18-85 years) were registered. 355 (66% ) were males and 261 (48.4%) patients were > 50 years. Nerve conduction studies/Electromyography findings were abnormal in 386 (77.6%) patients. The commonest diagnosis was lumbosacral radiculopathy in 65% followed by polyneuropathy with superimposed lumbosacral radiculopathy in 7%. The preponderance of lumbosacral radiculopathy was statistically found significant (p 50 years. Conclusion: Lumbosacral radiculopathy is highly expected to be found on nerve conduction studies /electromyography in patients who present with lumbar radicular pain. The lumbosacral radiculopathy is more common in individuals of age 50 years and above. (author)

  3. ANALISIS DE LOS MECANISMOS INVOLUCRADOS EN LA LOCALIZACION ASIMETRICA DE TPRP1 Y ATPRP3 EN EL PELO RADICULAR DE ARABIDOPSIS THALIANA

    OpenAIRE

    RODRIGUEZ FURLAN, CECILIA

    2012-01-01

    Las proteínas ricas en prolinas (PRPs) son proteínas estructurales involucradas en el ensamblaje de la pared celular. En Arabidopsis dos miembros de esta familia de genes, ATPRP1 y ATPRP3, se expresan específicamente en células de pelo radicular. Los pelos radiculares elongan mediante crecimiento por el ápice a partir de células epidermales especializadas denominadas tricoblastos. El crecimiento por el ápice involucra la secreción polarizada de los materiales necesarios para formar la memb...

  4. A clinical report demonstrating the significance of distinguishing a nasopalatine duct cyst from a radicular cyst

    Science.gov (United States)

    Aparna, Manikkath; Chakravarthy, Arumugam; Acharya, Shashi Rashmi; Radhakrishnan, Raghu

    2014-01-01

    Endodontic diagnosis is challenging and depends on the organisation of information from the patient history, clinical examination and analysis of the pulp, radiographic and histopathological assessment. A 35-year-old man was endodontically treated for radiolucency in relation to the roots of maxillary central incisors as it was a provisionally diagnosed case of radicular cyst. Since the palatal swelling persisted, the lesion was re-evaluated using relevant diagnostic aids and a diagnosis of nasopalatine duct cyst (NPDC) was made, which was missed during the initial assessment. An erroneous interpretation of cystic radiolucency in relation to maxillary central incisors can often lead to inappropriate treatment planning. This case highlights the relevant aspects in the diagnosis of NPDC when it is mistaken for a radicular cyst and emphasises the need for thorough clinical examination and relevant investigations for periapical radiolucencies of questionable origin before initiating endodontic therapy. PMID:24642171

  5. Tactile allodynia in patients with lumbar radicular pain (sciatica).

    Science.gov (United States)

    Defrin, Ruth; Devor, Marshall; Brill, Silviu

    2014-12-01

    We report a novel symptom in many patients with low back pain (LBP) that sheds new light on the underlying pain mechanism. By means of quantitative sensory testing, we compared patients with radicular LBP (sciatica), axial LBP (LBP without radiation into the leg), and healthy controls, searching for cutaneous allodynia in response to weak tactile and cooling stimuli on the leg and low back. Most patients with radicular pain (~60%) reported static and dynamic tactile allodynia, as well as cooling allodynia, on the leg, often extending into the foot. Some also reported allodynia on the low back. In axial LBP, allodynia was almost exclusively on the back. The degree of dynamic tactile allodynia correlated with the degree of background pain. The presence of allodynia suggests that the peripheral nerve generators of background leg and back pain have also induced central sensitization. The distal (foot) location of the allodynia in patients who have it indicates that the nociceptive drive that maintains the central sensitization arises paraspinally (ectopically) in injured ventral ramus afferents; this is not an instance of somatic referred pain. The presence of central sensitization also provides the first cogent account of shooting pain in sciatica as a wave of activity sweeping vectorially across the width of the sensitized dorsal horn. Finally, the results endorse leg allodynia as a pain biomarker in animal research on LBP, which is commonly used but has not been previously validated. In addition to informing the underlying mechanism of LBP, bedside mapping of allodynia might have practical implications for prognosis and treatment. How can you tell whether pain radiating into the leg in a patient with sciatica is neuropathic, ie, due to nerve injury? Copyright © 2014 International Association for the Study of Pain. Published by Elsevier B.V. All rights reserved.

  6. Organogênese do caquizeiro a partir de segmentos radiculares

    Directory of Open Access Journals (Sweden)

    Carvalho Dayse Cristina de

    2004-01-01

    Full Text Available A produção de mudas de caquizeiro (Diospyros kaki pelo processo da enxertia sobre porta-enxertos provenientes de sementes, ocasiona problemas de desuniformidade vegetativa. O objetivo do trabalho foi contribuir para o desenvolvimento de um protocolo para a regeneração de brotações de caquizeiro do tipo café, a partir de raízes por organogênese indireta. Segmentos radiculares obtidos de embriões germinados in vitro foram isolados de sementes de frutos maduros em meio MSfraction one-halfNO3. As sementes receberam assepsia pela imersão em etanol 70% por um minuto, em solução de hipoclorito de sódio 2,5% por 20 minutos e quatro lavagens em água esterilizada. No primeiro experimento, os segmentos radiculares de 2cm foram isolados em meio de cultura MSfraction one-halfNO3 acrescido de 0,01mM de ácido indolacético e quatro tipos de citocininas nas concentrações 1 e 10mM: zeatina, 6-benzilaminopurina, 2-isopenteniladenina e thidiazuron. No segundo experimento, para o enraizamento das brotações, foram testados quatro períodos de permanência em meio com 10mM de ácido indolbutírico: 0, 5 10 e 15 dias. A maior regeneração de brotos (1,2 brotos por explante ocorreu na combinação 1mM de zeatina com 0,01mM de ácido indolacético. As brotações juvenis obtidas possuem potencial natural para o enraizamento, sendo necessário novos estudos para confirmar o efeito da aplicação de auxinas.

  7. Development of a patient-reported outcome instrument for patients with lumbar radicular pain

    OpenAIRE

    Ibsen, Charlotte; Schiøttz-Christensen, Berit; Handberg, Charlotte; Nielsen, Claus Vinther; Hørder, Mogens; Maribo, Thomas

    2017-01-01

    Background Low back pain (LBP) is the leading cause to years lived with disability. 10–20% of patients with LBP experience radicular pain (lumbar radiculopathy). Patient-reported outcomes (PROs) play an important role in advancing patient-centered health care. Although patient involvement is essential to develop valid patient-centred PRO instruments patients are not always involved. The International Classification of Functioning, Disability and Health (ICF) are proposed to facilitate consist...

  8. A study on radicular cysts of primary teeth mimicking dentigerous cysts

    International Nuclear Information System (INIS)

    Cho, Bong Hae; Nah, Kyung Soo

    1994-01-01

    20 radicular cysts of primary teeth mimicking dentigerous cyst were reviewed. The following results were obtained. 1. The patients' age ranged from 7 to 14 years. Males(60%) were more involved than females (40%). 2. The mandible (85%) was affected more frequently than the maxilla (15%). The mandibular deciduous molar area (80%) was the most frequently involved. 3. The diameter of the cyst varied from 10 to 30 mm. 55% of permanent successors showed underdeveloped roots less than one-third. 4. The etiologic factors were pulp-treated teeth (65%), severe caries (20%), trauma (10%), deep amalgam filling (5%).

  9. Clinicopathological analysis of 232 radicular cysts of the jawbone in a population of southern Taiwanese patients

    Directory of Open Access Journals (Sweden)

    Jeng-Huey Chen

    2018-04-01

    Full Text Available This retrospective study aimed to evaluate the clinicopathological features of 232 cases of radicular cyst (January 2001–December 2016 submitted for histopathological examination to Department of Oral Pathology by endodontists in our institution. Demographic data including age, gender, affected site, involved tooth, and histopathological features, were reviewed. The study population comprised 133 females (57.3% and 99 males (42.7%, with a mean age of 40.5 years and an age range of 13–78 years. Two-hundred and one cysts occurred in the maxilla (86.7% and 31 in the mandible (13.3%. Most cases involved the anterior teeth of the maxilla (67.2%. The most frequently-involved tooth was the maxillary lateral incisor (50.5%. In most cases (228 cases; 98.3%, the cyst was lined with nonkeratinized stratified squamous epithelium, with two cases containing epithelial lining of the mucoepidermoid epithelium (0.9% and respiratory epithelium (0.9%, respectively. One case (0.4% revealed epithelial dysplasia of the epithelial lining. Hyaline body was seen in two cases (0.9%, and Rushton body was noted in seven cases (3.0%. Odontogenic epithelial rest was noted in one case (0.4%. Cholesterol clefts (54 cases; 23.3%, foamy histiocytes (72 cases; 31.0%, hemosiderins (57 cases; 24.6%, dystrophic calcifications (94 cases; 40.5%, foreign bodies (44 cases; 19.0%, and bacterial colonies (22 cases; 9.5% were also observed. Fifty-three cases (22.8% showed a mixed acute and chronic inflammatory infiltrate, whereas chronic inflammatory infiltrate only was noted in 179 cases (77.2%. In summary, the current findings provide a valuable source for clinicopathological reference concerning radicular cysts of the jawbone. Keywords: Periapical cyst, Radicular cyst, Taiwan

  10. Ultrasound Guided Nerve Root Injection in Patients with Cervical Spondylytic Radicular Pain

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    LT Choong

    2009-05-01

    Full Text Available Selective cervical nerve root injection using a mixture of corticosteroid and lignocaine is a treatment option for managing cervical radiculopathic pain. The procedure is usually performed under image guided fluoroscopy or Computerized Tomograhy. Ultrasound-guided cervical nerve root block does not expose the patients and personnel to radiation. During injection, the fluid is mostly visualized in a real-time fashion. This retrospective study reviewed the effectiveness of ultrasound in guiding cervical peri-radicular injection for pain relief in patients with recalcitrant cervical radiculopathy. There were no complications reported in this series.

  11. A Double-Blind, Placebo-Controlled, Parallel-Group Pilot Study of Milnacipran for Chronic Radicular Pain (Sciatica) Associated With Lumbosacral Disc Disease

    OpenAIRE

    Marks, David M.; Pae, Chi-Un; Patkar, Ashwin A.

    2014-01-01

    Objective: The current study investigates whether milnacipran, an equipotent serotonin-norepinephrine reuptake inhibitor, is effective in reducing chronic radicular pain in patients (N = 11) with lumbosacral disc disease.

  12. Higher expression of galectin-3 and galectin-9 in periapical granulomas than in radicular cysts and an increased toll-like receptor-2 and toll-like receptor-4 expression are associated with reactivation of periapical inflammation.

    Science.gov (United States)

    de Oliveira, Rita de Cássia Medeiros; Beghini, Marcela; Borges, Cláudia Renata Bibiano; Alves, Polyanna Miranda; de Araújo, Marcelo Sivieri; Pereira, Sanívia Aparecida de Lima; Rodrigues, Virmondes; Rodrigues, Denise Bertulucci Rocha

    2014-02-01

    Cysts and periapical granulomas are inflammatory reactions that develop in response to periapical infection by microbial species in dental root canal. It is known that toll-like receptors (TLRs) are pathogen recognition molecules and that galectins are lectins that can be associated with the inflammatory process, stimulating or inhibiting the immune system. The objective of this study was to evaluate the in situ expression of TLRs and galectins in radicular cysts and periapical granulomas. We analyzed 62 cases (30 radicular cysts, 27 periapical granulomas, and 5 control cases). Indirect immunohistochemistry was used to evaluate the expression of TLRs (TRL-2 and TLR-4) and galectins (Gal-3 and Gal-9). The expression of Gal-3 and Gal-9 was significantly higher in periapical granulomas and radicular cysts than in the control group. Similarly, both Gal-3 and Gal-9 were expressed significantly more in periapical granulomas than in radicular cysts. The expression of TLR-2 was significantly higher in periapical granulomas and radicular cysts than in the control group, and it was also significantly higher in radicular cysts with sinus tract than in the cases without sinus tract. Furthermore, the expression of TLR-4 was significantly higher in the cases of periapical granulomas with sinus tract than in the cases without sinus tract. Gal-3/Gal-9 and TLR-2/TLR-4 expression in the periapical granulomas and radicular cysts is associated with reactive periapical inflammation. Pathobiology of periapical disease is a very complex interplay of many bioactive molecules involved in immunoinflammatory responses. Up-regulation of these bioactive molecules might be an important modulator of inflammatory periapical lesions. Copyright © 2014 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  13. Lodo de esgoto e sistema radicular da pupunheira Sewage sludge doses and the root system of peach palm

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    Fernando Vinicio Armas Vega

    2005-04-01

    Full Text Available Os efeitos do lodo de esgoto sobre o sistema radicular da pupunheira foram estudados em experimento em campo, em blocos casualizados, instalado em Ubatuba (SP, em julho 2001, na densidade de 5.000 plantas ha-1. As doses de lodo de esgoto fresco (79,7 % de umidade utilizadas foram de 0, 38, 76 e 152 t ha-1, equivalentes a 0, 100, 200 e 400 kg ha-1 de N. Os tratamentos foram aplicados no sulco de plantio, adicionando-se 15 g por planta de KCl como fonte de K. A análise do sistema radicular foi efetuada doze meses após, por meio de trado e de trincheiras e com o auxílio de fotos digitais. Detectou-se que o sistema radicular de pupunheiras com um ano de campo estava concentrado nas camadas superficiais (acima de 75 % nos primeiros 20 cm, assim como em distâncias de até 0,5 m da base da planta. O lodo de esgoto modificou positivamente a densidade do solo, alterando também favoravelmente a densidade das raízes. Houve aumento na biomassa radicular proporcional às doses de lodo de esgoto, existindo uma relação direta daquela com a fitomassa aérea. Doses de lodo equivalentes a 200 e 400 kg de N contribuíram para aprofundar o sistema radicular e proporcionaram maior quantidade relativa de raízes finas.The effects of sewage sludge doses on the root system of peach palm were studied in a field experiment, in randomized complete blocks, carried out in Ubatuba, state of São Paulo, Brazil. The trial was set up in July 2001, with a density of 5,000 plants ha-1. The sewage sludge doses (79.7 % water content were 0, 38, 76, and 152 t ha-1, which were equivalent to doses of 0, 100, 200, and 400 kg ha-1 of N. The treatments were applied in the planting furrow, and every plant was provided with K by a dose of 15 g potassium chloride. The root system was analyzed one year after planting using soil auger and digging of trenches and with the help of digital images. It was concluded that the root system of one-year old peach palm was concentrated in the

  14. The use of lumbar epidural injection of platelet lysate for treatment of radicular pain.

    Science.gov (United States)

    Centeno, Christopher; Markle, Jason; Dodson, Ehren; Stemper, Ian; Hyzy, Matthew; Williams, Christopher; Freeman, Michael

    2017-11-25

    Epidural steroid injections (ESI) are the most common pain management procedure performed in the US, however evidence of efficacy is limited. In addition, there is early evidence that the high dose of corticosteroids used can have systemic side effects. We describe the results of a case series evaluating the use of platelet lysate (PL) epidural injections for the treatment of lumbar radicular pain as an alternative to corticosteroids. Registry data was obtained for patients (N = 470) treated with PL epidural injections presenting with symptoms of lumbar radicular pain and MRI findings that were consistent with symptoms. Collected outcomes included numeric pain score (NPS), functional rating index (FRI), and a modified single assessment numeric evaluation (SANE) rating. Patients treated with PL epidurals reported significantly lower (p < .0001) NPS and FRI change scores at all time points compared to baseline. Post-treatment FRI change score means exceeded the minimal clinically important difference beyond 1 month. Average modified SANE ratings showed 49.7% improvement at 24 months post-treatment. Twenty-nine (6.3%) patients reported mild adverse events related to treatment. Patients treated with PL epidurals reported significant improvements in pain, exceeded the minimal clinically important difference (MCID) for FRI, and reported subjective improvement through 2-year follow-up. PL may be a promising substitute for corticosteroid.

  15. Distribuição espacial do sistema radicular do cafeeiro fertirrigado por gotejamento em Campinas Root distribution of fertirrigated coffee trees in Campinas, State of São Paulo, Brazil

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    Carlos Vinícius Garcia Barreto

    2006-01-01

    Full Text Available Este estudo teve como objetivo avaliar o efeito da fertirrigação por gotejamento, utilizando-se emissores com diferentes espaçamentos (0,50 ou 0,80 m e profundidades de instalação (superficial, 0,10 e 0,20 m, na distribuição espacial do sistema radicular do cafeeiro. Observaram-se no cafeeiro irrigado e adubado de forma convencional diferentes condições de desenvolvimento radicular, variando conforme os tratamentos impostos. Para as plantas irrigadas por tubogotejadores com emissores espaçados a cada 0,50 m, a profundidade radicular efetiva foi menor (média de 0,63 m do que a observada para as plantas irrigadas por emissores posicionados a cada 0,80 m (média de 0,70 m. No manejo nutricional por fertirrigação observou-se menor desigualdade na profundidade radicular efetiva entre os tratamentos, bem como, em um aumento médio de 51,1% de densidade de raízes. Houve tendência de manutenção do volume radicular na região próxima aos emissores, enquanto nos pontos mais distantes do desenvolvimento do bulbo úmido, o crescimento radicular foi de 77%. A irrigação das plantas por tubogotejadores enterrados a 0,10 m de profundidade proporcionou maior desenvolvimento radicular em resposta à fertirrigação.This study aimed to evaluate the effect of the drip fertirrigation system, by using emitters with different arranging of spaces (0.50 or 0.80 m and depths of installation (superficial, 0.10 or 0.20 m on the ground, over the root spatial distribution of coffee tree. The coffee tree conventionally irrigated and fertilized presented different conditions of root development, varying according to the treatment imposed. For plants irrigated by emitters spaced every 0.50 m, the effective root depth was smaller (mean of 0.63 m than that observed for plants irrigated by emitters spaced every 0.80 m (mean of 0.70 m. The fertirrigation nutritional management allowed an uniform effective root depth among the treatments, as well as an increase

  16. Characterization of Coronal Pulp Cells and Radicular Pulp Cells in Human Teeth.

    Science.gov (United States)

    Honda, Masaki; Sato, Momoko; Toriumi, Taku

    2017-09-01

    Dental pulp has garnered much attention as an easily accessible postnatal tissue source of high-quality mesenchymal stem cells (MSCs). Since the discovery of dental pulp stem cells (DPSCs) in permanent third molars, stem cells from human exfoliated deciduous teeth and from supernumerary teeth (mesiodentes) have been identified as a population distinct from DPSCs. Dental pulp is divided into 2 parts based on the developing stage: the coronal pulp and the radicular pulp. Root formation begins after the crown part is completed. We performed a sequential study to examine the differences between the characteristics of coronal pulp cells (CPCs) and radicular pulp cells (RPCs) from permanent teeth, mesiodentes, and deciduous teeth. Interestingly, although we have not obtained any data on the difference between CPCs and RPCs in permanent teeth, there are some differences between the characteristics of CPCs and RPCs from mesiodentes and deciduous teeth. The MSC characteristics differed between the RPCs and CPCs, and the reprogramming efficiency for the generation of induced pluripotent stem cells was greater in RPCs than in CPCs from deciduous teeth. The proportion of CD105 + cells in CPCs versus that in RPCs varied in mesiodentes but not in permanent teeth. The results indicate that the proportion of CD105 + cells is an effective means of characterizing dental pulp cells in mesiodentes. Taken together, the stem cells in deciduous and supernumerary teeth share many characteristics, such as a high proliferation rate and an immunophenotype similar to that of DPSCs. Thus, mesiodentes accidentally encountered on radiographs by the general dental practitioner might be useful for stem cell therapy. Copyright © 2017 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  17. DRENAGEM SUPERFICIAL DE SOLOS ARGILOSOS DO NORTE DO PARANÁ

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    Rogério Teixeira de Faria

    1999-08-01

    Full Text Available RESUMO Foi avaliado o desempenho de práticas de drenagem superficial e cobertura morta em uma área de várzea do norte do Paraná. Antes e após o cultivo do arroz, foram comparadas as taxas de drenagem em tratamentos com e sem drenos torpedo e determinadas a vazão e a obstrução dos condutos. Sob o cultivo do feijoeiro, foram avaliados os efeitos dos drenos torpedo e de "camas" na drenagem e de cobertura morta (palha de arroz na retenção de água do solo. Os resultados indicaram que os drenos torpedo foram mais eficientes se construídos com solo menos úmido, porém sua longevidade foi menor que um ano. Sob o feijoeiro, os drenos torpedo e cobertura morta mantiveram o lençol freático mais profundo e o solo com menor tensão de umidade, mas esses efeitos ocorreram abaixo da zona radicular (15 cm, resultando em baixa produtividade.

  18. Concordant pressure paresthesia during interlaminar lumbar epidural steroid injections correlates with pain relief in patients with unilateral radicular pain.

    Science.gov (United States)

    Candido, Kenneth D; Rana, Maunak V; Sauer, Ruben; Chupatanakul, Lalida; Tharian, Antony; Vasic, Vladimir; Knezevic, Nebojsa Nick

    2013-01-01

    Transforaminal and interlaminar epidural steroid injections are commonly used interventional pain management procedures in the treatment of radicular low back pain. Even though several studies have shown that transforaminal injections provide enhanced short-term outcomes in patients with radicular and low back pain, they have also been associated with a higher incidence of unintentional intravascular injection and often dire consequences than have interlaminar injections. We compared 2 different approaches, midline and lateral parasagittal, of lumbar interlaminar epidural steroid injection (LESI) in patients with unilateral lumbosacral radiculopathic pain. We also tested the role of concordant pressure paresthesia occurring during LESI as a prognostic factor in determining the efficacy of LESI. Prospective, randomized, blinded study. Pain management center, part of a teaching-community hospital in a major metropolitan US city. After Institutional Review Board approval, 106 patients undergoing LESI for radicular low back pain were randomly assigned to one of 2 groups (53 patients each) based on approach: midline interlaminar (MIL) and lateral parasagittal interlaminar (PIL). Patients were asked to grade any pressure paresthesia as occurring ipsilaterally or contralaterally to their "usual and customary pain," or in a distribution atypical of their daily pain. Other variables such as: the Oswestry Disability Index questionnaire, pain scores at rest and during movement, use of pain medications, etc. were recorded 20 minutes before the procedure, and on days 1, 7, 14, 21, 28, 60, 120, 180 and 365 after the injection. Results of this study showed statistically and clinically significant pain relief in patients undergoing LESI by both the MIL and PIL approaches. Patients receiving LESI using the lateral parasagittal approach had statistically and clinically longer pain relief then patients receiving LESI via a midline approach. They also had slightly better quality of

  19. Nuevos métodos de desinfección y limpieza del sistema de conductos radiculares

    OpenAIRE

    Castelo Baz, Pablo

    2012-01-01

    La desinfección y limpieza del sistema de conductos radiculares, es considerada una parte esencial en la preparación químico-mecánica del mismo, cuyo fin es poder conseguir el éxito en endodoncia. El fin de esta tesis doctoral es demostrar la utilidad clínica de dos de estos nuevos mecanismos, la irrigación ultrasónica continua por un lado y el láser de diodo por el otro.

  20. Lumbar spinal imaging in radicular pain and related conditions. Understanding diagnostic images in a clinical context

    International Nuclear Information System (INIS)

    Wilmink, Jan T.

    2010-01-01

    There is general agreement that lumbosacral nerve root compression is a prime factor in the pathogenesis of sciatica and neurogenic claudication, although humoral and vascular factors certainly play a role as well. This book focuses on imaging of the various ways in which nerve root compression can come about, and assessing which anatomic features are reliably associated with the occurrence of radicular pain, as opposed to morphologic findings which are probably coincidental. After a discussion of the nature of radicular pain and related symptoms, spinal imaging techniques and options are reviewed, with emphasis on the role of MR myelography in assessing the condition of the intradural nerve roots. A chapter on normal topographic, sectional, and functional (dynamic) radiologic anatomy is followed by a presentation on pathologic anatomy, addressing the various mechanisms of nerve root compression. In the chapter on pre- and postoperative imaging, features which may help to predict the evolution of the symptoms are discussed, with an eye to selecting candidates for surgical treatment. This is followed by a discussion of the role and limitations of imaging studies in various adverse postoperative conditions. In illustrations involving patient studies, imaging features are linked where possible to the clinical symptoms and history of the individuals involved. (orig.)

  1. Lumbar spinal imaging in radicular pain and related conditions. Understanding diagnostic images in a clinical context

    Energy Technology Data Exchange (ETDEWEB)

    Wilmink, Jan T. [University Hospital Maastricht (Netherlands). Dept. Radiology

    2010-07-01

    There is general agreement that lumbosacral nerve root compression is a prime factor in the pathogenesis of sciatica and neurogenic claudication, although humoral and vascular factors certainly play a role as well. This book focuses on imaging of the various ways in which nerve root compression can come about, and assessing which anatomic features are reliably associated with the occurrence of radicular pain, as opposed to morphologic findings which are probably coincidental. After a discussion of the nature of radicular pain and related symptoms, spinal imaging techniques and options are reviewed, with emphasis on the role of MR myelography in assessing the condition of the intradural nerve roots. A chapter on normal topographic, sectional, and functional (dynamic) radiologic anatomy is followed by a presentation on pathologic anatomy, addressing the various mechanisms of nerve root compression. In the chapter on pre- and postoperative imaging, features which may help to predict the evolution of the symptoms are discussed, with an eye to selecting candidates for surgical treatment. This is followed by a discussion of the role and limitations of imaging studies in various adverse postoperative conditions. In illustrations involving patient studies, imaging features are linked where possible to the clinical symptoms and history of the individuals involved. (orig.)

  2. Expressão do gene ASYMMETRIC LEAVES1 (AS1) em explantes radiculares de Passiflora edulis Sims e organogênese in vitro em Passiflora setacea D.C. (Passifloraceae)

    OpenAIRE

    Vieira, Lorena Melo

    2011-01-01

    O presente estudo teve como objetivos caracterizar a expressão do gene ASYMMETRIC LEAVES1 (AS1), via hibridização in situ, durante a regeneração in vitro de segmentos radiculares de Passiflora edulis Sims, espécie comercialmente cultivada, e estabelecer um protocolo reproduzível via organogênese in vitro em Passiflora setacea, espécie silvestre. Explantes radiculares de P. edulis foram cultivados em meio MS, para indução de organogênese de ramos, suplementado com 2,35 μM de BA. Para dete...

  3. Ativação da proteína TGFbetaI latente em pulmão irradiado in vivo Latent TGFbeta1 activation in the lung irradiated in vivo

    Directory of Open Access Journals (Sweden)

    MARCOS DUARTE MATTOS

    2002-12-01

    Full Text Available OBJETIVO: Investigar no pulmão, por imunohistoquímica, a localização das proteínas TGFbeta1 latente e TGFbeta1 ativa, se ocorre ativação radioinduzida da proteína TGFbeta1 latente e a distribuição das fibras colágenas em diversos períodos de tempo após irradiação. MÉTODOS: 32 camundongos isogênicos (C57BL foram divididos em dois grupos: GI (não irradiado com 12 animais e GII (irradiado com 20 animais. Os animais do GII receberam radiação gama (telecobaltoterapia, 60Co, com rendimento de 0,97Gy/min, dose única de 7Gy em corpo inteiro. Os camundongos dos grupos I e II foram sacrificados por estiramento cervical nos períodos de 1, 14, 30 e 90 dias após irradiação. RESULTADOS: Os pulmões irradiados apresentaram: 1 congestão vascular e espessamento dos septos alveolares aos 30 dias e mais intensamente aos 90 dias depois da irradiação; 2 aumento significante da deposição de colágeno em todos os períodos de tempo após irradiação; 3 fraca ativação da proteína TGFbeta1 latente em um dia e intensa aos 14 dias depois da irradiação em brônquios e alvéolos. Nossos resultados sugerem que células dos brônquios e alvéolos podem participar do complexo mecanismo de fibrose pulmonar radioinduzida atuando como fontes da proteína TGFbeta1 ativa.PURPOSE: assess the latent and active TGFb1 localization in the lung, whether or not radiation induces latent TGFbeta1 activation, and the distribution of collagen fibers in the irradiated lung. METHODS: Thirty two C57BL mice were randomly assigned in two groups: GI (non irradiated animals and GII (irradiated animals. The mice from GII received a single whole ¾ body radiation dose of 7Gy, using a 60Co source at a dose rate of 0.97 Gy/min. They were sacrificed by cervical dislocation at 1, 14, 30 and 90 days after radiation. RESULTS: The irradiated lungs showed: 1 vascular congestion and thickness of the alveolar septa 30 days and more intense 90 days after irradiation; 2

  4. Desenvolvimento radicular do algodoeiro em resposta à localização do fertilizante Cotton root development as affected by fertilizer placement

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    Fábio Suano de Souza

    2007-04-01

    Full Text Available A utilização de adubos pode-se tornar prejudicial caso o fertilizante não seja localizado adequadamente. No presente trabalho foram estudados o crescimento radicular do algodoeiro (Gossypium hirsutum, o crescimento inicial e a nutrição da planta, considerando o local de aplicação do fertilizante. O estudo foi realizado em vasos com parede de vidro. O fertilizante foi colocado a 5,0 cm abaixo e 0,0, 2,5, 5,0 e 10,0 cm ao lado das sementes. O crescimento radicular foi avaliado a cada três dias e, aos 21 dias após a emergência, as plantas foram coletadas, sendo avaliada a produção de matéria seca e a absorção de macronutrientes. A aplicação de fertilizante proporcionou crescimento inicial mais vigoroso do sistema radicular mesmo em solo previamente corrigido e adubado, o que é importante no estabelecimento da cultura. Somente houve bom crescimento inicial do sistema radicular e da parte aérea do algodoeiro quando o fertilizante foi aplicado de 5,0 a 10,0 cm ao lado e 5,0 cm abaixo das sementes.Unless fertilizer is properly placed in the soil it can be harmful. This experiment was conducted to study cotton (Gossypium hirsutum root growth and initial plant development and nutrition as affected by fertilizer placement. Cotton plants were grown in pots with a glass wall. The fertilizer was applied 5.0 cm under the seed row and 0, 2.5, 5.0 and 10.0 cm beside the seed row. Root growth was evaluated every 3 days, and 21 days after emergence the plants were harvested. Dry matter production and macronutrient absorption were evaluated. Even in previously limed and fertilized soil, localized fertilizer application reinforced the initial growth of cotton roots, which is very important for a good crop establishment in the field. Normal root growth and adequate initial plant development was only observed when the fertilizer was placed 5.0 cm below and from 5.0 to 10.0 cm distance from the seed row.

  5. Assessing the effectiveness of ‘pulse radiofrequency treatment of dorsal root ganglion’ in patients with chronic lumbar radicular pain: study protocol for a randomized control trial

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    Shanthanna Harsha

    2012-04-01

    Full Text Available Abstract Background Chronic lumbar radicular pain can be described as neuropathic pain along the distribution of a particular nerve root. The dorsal root ganglion has been implicated in its pathogenesis by giving rise to abnormal impulse generation as a result of irritation, direct compression and sensitization. Chronic lumbar radicular pain is commonly treated with medications, physiotherapy and epidural steroid injections. Epidural steroid injections are associated with several common and rarer side effects such as spinal cord infarction and death. It is essential and advantageous to look for alternate interventions which could be effective with fewer side effects. Pulse radio frequency is a relatively new technique and is less destructive then conventional radiofrequency. Safety and effectiveness of pulse radio frequency in neuropathic pain has been demonstrated in animal and humans studies. Although its effects on dorsal root ganglion have been studied in animals there is only one randomized control trial in literature demonstrating its effectiveness in cervical radicular pain and none in lumbar radicular pain. Our primary objective is to study the feasibility of a larger trial in terms of recruitment and methodology. Secondary objectives are to compare the treatment effects and side effects. Methods/designs This is a single-center, parallel, placebo-controlled, triple-blinded (patients, care-givers, and outcome assessors, randomized control trial. Participants will have a history of chronic lumbar radicular pain for at least 4 months in duration. Once randomized, all patients will have an intervention involving fluoroscopy guided needle placement to appropriate dorsal root ganglion. After test stimulation in both groups; the study group will have a pulse radio frequency treatment at 42°C for 120 s to the dorsal root ganglion, with the control group having only low intensity test stimulation for the same duration. Primary outcome is to

  6. Surgical management with intentional replantation on a tooth with palato-radicular groove

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    Jorge Forero-López

    2015-05-01

    Full Text Available A palato-radicular groove (PRG is a developmental anomaly primarily found in the maxillary lateral incisors. It is a potential communication path between the root canal and the periodontium that decreases the survival prognosis of the affected tooth, therefore compromising the stability of the dental structure in the oral cavity. The aim of this case report is to present an original technique where a PRG was treated by means of intracanal disinfection, PRG sealing with glass ionomer, replantation with intentional horizontal 180 degree rotation of the tooth, and an aesthetic veneer placed to provide adequate tooth morphology. The clinical and biological benefits of this novel technique are presented and discussed.

  7. Effects of neural mobilization on pain, straight leg raise test and disability in patients with radicular low back pain

    Directory of Open Access Journals (Sweden)

    Haris Čolaković

    2013-09-01

    Full Text Available Introduction: Radicular low back pain is a disorder involving the dysfunction of the lumbosacral nerve roots. Clinical rehabilitation approaches for low back pain include kinesiotherapy, and physical therapyprocedures: ice , rest , heat, ultrasound, TENS, but evidences regarding their effectiveness are lacking. The purpose of this study was to determine if nerve mobilization brings better improvements in pain, SLR testand functional disability in patients with radicular low back pain compared to standard physical therapy.Methods: The study was conducted on a 60 patients with Radicular low back pain, treated in Regional medical center "Dr Safet Mujić", Mostar, during the period from 01.04.2010 untill 31.04.2011. Patientswere divided into two groups. First group (n=30 received a 4-week rehabilitation program including neural mobilization and lumbar stabilization program. Second group (n=30 received a 4-week rehabilitation program including active range of motion (ROM exercises and lumbar stabilization program.Results: At the beginning, the two groups were not signifi cantly different in terms of score or SLR. After therapy there was statistically signifi cant improvement between groups in both VAS scores[Group A: 1.16±1.5; Group B: 2.25±2.2] and SLR [Group A: 80.9±17.4; Group B: 65.9±16.4]. ]. After the treatment, in group A, 46.6% (14 participants had been rated with 4, but in Group B: 33.3% (10 participants had been rated with 3.Conclusions: Patients treated with neural mobilization and lumbar stabilization showed better VAS scores and Straight Leg Test scores compared to patients treated with active range of motion exercises and lumbar stabilization. Further research to investigate their long term effi cacy is warranted, with emphasis on greater number of participants.

  8. Efeito antibacteriano do preparo biomecÃnico e de uma pasta à base de hidrÃxido de cÃlcio sobre bactÃrias presentes em canais radiculares de dentes decÃduos necrosados apÃs trauma

    OpenAIRE

    Denise Lins de Sousa

    2008-01-01

    Um dos principais objetivos do tratamento endodÃntico dos canais radiculares de dentes com polpa necrÃtica consiste em eliminar os microorganismos localizados no sistema de canais radiculares. Dessa forma, esta dissertaÃÃo, constituÃda por um artigo, propÃe-se a avaliar o efeito antibacteriano do preparo quÃmico-mecÃnico e de uma pasta à base de hidrÃxido de cÃlcio sobre bactÃrias presentes em canais radiculares de dentes decÃduos necrosados apÃs trauma bem como verificar a presenÃa dos micro...

  9. Cobertura radicular mediante la utilización de un injerto subepitelial de tejido conectivo combinado con un colgajo pediculado avanzado coronalmente

    Directory of Open Access Journals (Sweden)

    Antonio Díaz Caballero

    2010-01-01

    Full Text Available Las recesiones gingivales son un hallazgo clínico muy frecuente que ocasionan problemas estéticos, hipersensibilidad dentaria y dificultad para llevar a cabo una correcta higiene oral en los pacientes. Uno de los objetivos de la terapia periodontal es corregir quirúrgicamente las recesiones; se han descrito una variedad de enfoques quirúrgicos como métodos efectivos para cubrir las superficies radiculares expuestas, siendo el injerto libre de tejido conectivo una de las técnicas que hoy en día ofrece un buen porcentaje de éxito y predecibilidad. Se presenta el caso de un paciente con retracción del margen gingival en el maxilar superior derecho; se describe el procedimiento quirúrgico usando una técnica bilaminar empleando un injerto subepitelial de tejido conectivo bajo un colgajo de espesor parcial posicionado coronalmente, y se obtienen buenos resultados estéticos y cobertura radicular.

  10. Value of TENS for relief of chronic low back pain with or without radicular pain.

    Science.gov (United States)

    Buchmuller, A; Navez, M; Milletre-Bernardin, M; Pouplin, S; Presles, E; Lantéri-Minet, M; Tardy, B; Laurent, B; Camdessanché, J P

    2012-05-01

    To evaluate the efficacy of transcutaneous electrical neurostimulation (TENS) in patients with chronic low back pain (LBP). Prospective, randomized, multicentre, single-blind study. Twenty-one French pain centres. Two hundred thirty-six consecutive adult patients consulting for chronic LBP, with or without radicular pain (mean age ± standard deviation: 53 ± 13 years; range: 28-86 years). Patients were randomly assigned to receive either active (n = 117) or sham (n = 119) TENS in four 1-h daily treatment sessions for 3 months. The primary outcome measured was improvement of functional status at 6 weeks (Roland-Morris Disability Questionnaire). Secondary outcome measures were improvement of functional status at 3 months, pain relief (weekly visual analogue scale assessments), positive functional repercussions of pain levels on quality of life, a diminution of the use of analgesic and anti-inflammatory medication, satisfaction with the overall treatment strategy and compliance. Functional status did not differ between the groups, whether at 6 weeks or 3 months (p = 0.351 at 6 weeks). A significant improvement between the first and last visual analogue scale assessments was observed in patients with either lumbar pain alone or lumbar and radicular pain treated with active TENS. Other outcome measures did not differ significantly between the two groups. There was no functional benefit of TENS in the treatment of patients with chronic LBP. © 2011 European Federation of International Association for the Study of Pain Chapters.

  11. Atributos do solo e biomassa radicular após quatro anos de semeadura direta de forrageiras de estação fria em campo natural dessecado com herbicidas

    Directory of Open Access Journals (Sweden)

    E. Pérez Gomar

    2002-03-01

    Full Text Available Os campos naturais, desenvolvidos sobre solos arenosos da região norte do Uruguai, são compostos por espécies forrageiras, sobretudo de gramíneas de produção estacional, com baixa produtividade no inverno. O objetivo deste estudo foi avaliar o efeito da dessecação do campo natural no estabelecimento de espécies de estação fria em atributos do solo e biomassa radicular. O estudo, iniciado em 1994, utilizou delineamento experimental de blocos ao acaso com parcelas subsubdivididas, com três repetições. Nas parcelas principais, em 1994, foram aplicados os tratamentos com herbicidas (paraquat 0,60gha-1i.a., glifosate 0,36gha-1i.a. e glifosate 1,44gha-1i.a. e testemunha sem herbicida em campo natural para a semeadura de pastagens de inverno. Nessas parcelas, a pastagem de inverno foi aveia preta (avena strigosa L., triticale (X Triticosecale Wittmack e azevém (Lolium multiflorum L.. As subparcelas foram formadas pela reaplicação ou não dos herbicidas em 1995 e as subsubparcelas foram formadas pela reaplicação ou não dos herbicidas em 1996. As amostras de solo para determinar a biomassa radicular, a densidade do solo, o carbono (C orgânico do solo, bases trocáveis, Al trocável e o pH do solo foram extraídas separadamente, em três subamostras, usando cilindro metálico de 7,65cm de diâmetro e 40cm de comprimento. Os monolitos extraídos foram estratificados até 30cm de profundidade nas camadas de 0-5, 5-10, 10-15, 15-20 e 20-30cm. A biomassa radicular foi maior na testemunha do que a média dos tratamentos com herbicidas somente na camada de 0-5cm, e, entre os tratamentos com herbicidas, a biomassa radicular foi maior com paraquat do que com o glifosate. A reaplicação de herbicidas, em 1995 e 1996, também ocasionou redução da biomassa radicular. Houve alta correlação positiva de C orgânico com a biomassa radicular. A redução de C orgânico para o tratamento mais agressivo de controle químico (glifosate 1,44gi

  12. Análise da presença do canal cavo-inter-radicular em molares: estudo in vitro = ‘In vitro’ analysis of acessory foramina in molar teeth

    Directory of Open Access Journals (Sweden)

    Cunha, Fernanda Silveira da

    2005-01-01

    Full Text Available Evidências significativas sugerem a inter-relação existente entre a região de furca de dentes multirradiculados com o desenvolvimento de lesões endo-periodontais, principalmente, quando da presença do canal cavo-inter-radicular. Com o objetivo de compreender os mecanismos envolvidos na etiopatogenia de tais doenças periodontais, assim como propiciar o diagnóstico e o tratamento precoces, buscou-se melhor caracterizar essa região dando ênfase à morfologia do assoalho da câmara pulpar. Para este estudo foram selecionados 42 molares humanos extraídos, sendo 21 superiores e 21 inferiores. Após realizadas as aberturas coronárias e localizadas as entradas dos canais radiculares, os dentes tiveram parte das porções coronária e radicular cortada perpendicularmente ao longo do seu eixo, com o auxílio de disco de carburundum. Depois de uma criteriosa limpeza dos espécimes, esses foram secos em câmara de ponto crítico, sendo, a seguir, preparados para análise em microscópio eletrônico de varredura (Philips®, modelo XL30, Holanda. Os dados foram analisados através do Teste U de Mann- Whitney e do teste Qui-quadrado. Com base nos resultados obtidos e de acordo com a literatura pertinente, pôde-se verificar que: 1. o diâmetro e o número de túbulos dentinários encontrados por mm2 assim como a presença de foraminas no assoalho da câmara pulpar sugerem a permeabilidade dessa região; 2. o diâmetro maior de algumas foraminas identifica a presença do canal cavo-inter-radicular

  13. Caries Radicular en el Adulto Mayor. Revisión Narrativa de Literatura

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    Alberto Carlos Cruz-Gonzáles

    2015-07-01

    Full Text Available La caries radicular (CR se define como una lesión progresiva, crónica, con tejido reblandecido y originada en las raíces dentales expuestas al medio oral. Los adultos mayores son más susceptibles a presentar esta patología que otros grupos etarios, dada su mayor prevalencia de recesiones gingivales. El objetivo del presente artículo es realizar una revisión narrativa de la literatura sobre la caries radicular en el adulto mayor, con el fin de presentar una puesta al día que sirva de guía a los odontólogos para la toma de decisiones clínicas sobre su manejo. Se realizó una búsqueda de artículos en inglés y español, mediante los términos MESH Root Caries (AND Elderly en las bases de datos Pubmed, ScienceDirect, Google Scholar y Scielo, sin restricción para año de publicación. Se incluyeron artículos de investigación en seres humanos y revisiones sistemáticas sobre el tema. Inicialmente se obtuvieron 127 publicaciones de las que se descartaron 13 documentos, luego de la lectura de los resúmenes. Se encontró una alta prevalencia de CR en Colombia y en América Latina (27.6% y 23.71% respectivamente. Entre los factores de riesgo asociados, se reportaron la conservación de un mayor número de dientes en edades avanzadas, la recesión gingival, el acúmulo de biofilm, el uso de prótesis, la ingesta frecuente de azúcares refinados y las alteraciones físicas y cognoscitivas. Se encontró, igualmente, que la localización, el color, la textura superficial y la profundidad de la cavidad son factores determinantes del diagnóstico y el tratamiento de la CR y que la determinación del enfoque terapéutico parte de la clasificación del paciente en un nivel de riesgo.

  14. Heparanase expression in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Elad, S; Sherman, Y; Palmon, A; Vlodavsky, I; Or, R

    2013-01-01

    Heparanase is an endo-β-D-glucuronidase enzyme which degrades heparan sulfate glycosaminoglycan side chains of proteoglycans in the extracellular matrix and in basement membranes. The aim of this study was to evaluate the expression of heparanase in periapical granulomas (PGs) and radicular cysts (RCs). Immunohistochemistry was used to assess heparanase expression in PGs and RCs. Parameters including stain intensity, location and cell type were used to characterize heparanase expression in the periapical lesions. Ordered categories (from weak to strong) were used to compare the level of heparanase staining in the PG and RC groups. Both epithelial cells and inflammatory cells were positive for heparanase. The relative staining of the epithelial cells was strong, whereas the relative staining of the inflammatory cells was weak. Significant differences in immunohistochemical staining of epithelial cells were observed between RCs and PGs (p = 0.002). The relative expression of heparanase in epithelial cells in RCs was strong. In PGs, lesions with few or no epithelial cells, heparanase was predominantly expressed weakly by inflammatory cells. PGs and RCs have the same infectious origin. Therefore, the different cellular sources of heparanase in these periapical lesions may imply that this enzyme has specific pathogenetic functions in RCs and PGs.

  15. Radicular lower extremity pain as the first symptom of primary hyperparathyroidism

    Energy Technology Data Exchange (ETDEWEB)

    Mustonen, Antti O.T.; Kiuru, Martti J.; Koskinen, Seppo K. [Toolo Trauma Center, Helsinki University Central Hospital, Topeliuksenkatu 5, 00029, Helsinki (Finland); Stahls, Anders; Bohling, Tom [Department of Pathology, Haartman Institute, University of Helsinki, 00014, Helsinki (Finland); Kivioja, Aarne [Department of Orthopedics and Traumatology, Helsinki University Central Hospital, 00029, Helsinki (Finland)

    2004-08-01

    Clinical symptoms of hyperparathyroidism are generally nausea, vomiting, fatigue, constipation, and hypotonicity of the muscles and ligaments; bone pain and tenderness are also seen but are more common in secondary hyperparathyroidism. We report a histologically confirmed case of a 28-year-old man whose sole symptom of primary hyperparathyroidism was lower extremity radicular pain due to a vertebral brown tumor. Magnetic resonance imaging demonstrated brown tumor to be hyperintense on T2-weighted and slightly hypointense on T1-weighted sequences; it showed intense contrast enhancement with gadolinium. Because brown tumors usually contain hemosiderin a short T2 should have been expected, but this was not seen in our case. Healing resulted in decreasing contrast enhancement on T1-weighted sequences and increasingly short T2. To our knowledge, this is the first report of a lumbar vertebral brown tumor associated with primary hyperparathyroidism. (orig.)

  16. Radicular lower extremity pain as the first symptom of primary hyperparathyroidism

    International Nuclear Information System (INIS)

    Mustonen, Antti O.T.; Kiuru, Martti J.; Koskinen, Seppo K.; Stahls, Anders; Bohling, Tom; Kivioja, Aarne

    2004-01-01

    Clinical symptoms of hyperparathyroidism are generally nausea, vomiting, fatigue, constipation, and hypotonicity of the muscles and ligaments; bone pain and tenderness are also seen but are more common in secondary hyperparathyroidism. We report a histologically confirmed case of a 28-year-old man whose sole symptom of primary hyperparathyroidism was lower extremity radicular pain due to a vertebral brown tumor. Magnetic resonance imaging demonstrated brown tumor to be hyperintense on T2-weighted and slightly hypointense on T1-weighted sequences; it showed intense contrast enhancement with gadolinium. Because brown tumors usually contain hemosiderin a short T2 should have been expected, but this was not seen in our case. Healing resulted in decreasing contrast enhancement on T1-weighted sequences and increasingly short T2. To our knowledge, this is the first report of a lumbar vertebral brown tumor associated with primary hyperparathyroidism. (orig.)

  17. Expressão da proteína tgfbeta1 em coração irradiado in vivo In vivo evaluation of expression of TGFbeta1 in the irradiated heart

    Directory of Open Access Journals (Sweden)

    Renato José Affonso Júnior

    2004-04-01

    Full Text Available OBJETIVO: Avaliar, no coração, por imuno-histoquímica, a localização das proteínas TGFbeta1 latente e TGFbeta1 ativa, se ocorre ativação radioinduzida da proteína TGFbeta1 latente, e a distribuição das fibras colágenas em diversos períodos de tempo após irradiação. MATERIAIS E MÉTODOS: Trinta e dois camundongos isogênicos (C57BL foram divididos em dois grupos: GI (não irradiado, com 12 animais, e GII (irradiado, com 20 animais. Os animais do GII receberam radiação gama (telecobaltoterapia, 60Co, com rendimento de 0,97 Gy/min., dose única de 7 Gy em corpo inteiro. Os camundongos dos grupos I e II foram sacrificados por estiramento cervical nos períodos de 1, 14, 30 e 90 dias após irradiação. RESULTADOS: Os corações irradiados apresentaram: 1 alterações nucleares e diminuição das estriações das células musculares cardíacas; 2 aumento significante da deposição de fibras colágenas aos 90 dias depois da irradiação; 3 ativação da proteína TGFbeta1 latente em cardiomiócitos e células do conjuntivo depois da irradiação. CONCLUSÃO: Nossos resultados mostram a importância da proteína TGFbeta1 no processo de fibrose cardíaca radioinduzida e sugerem que células do parênquima (cardiomiócitos e do conjuntivo podem participar deste mecanismo atuando como fontes da proteína TGFbeta1 ativa.OBJECTIVE: To assess the latent and active TGFbeta1 localization in the heart, to evaluate whether or not radiation induces latent TGFbeta1 activation, and to study the distribution of collagen fibers in the irradiated heart. MATERIALS AND METHODS: Thirty-two C57BL mice were randomly assigned in two groups: GI (non irradiated animals and GII (irradiated animals. The mice from GII received a single whole-body radiation dose of 7Gy, using a 60Co source at a dose rate of 0.97 Gy/min. The animals were sacrificed by cervical dislocation at 1, 14, 30 and 90 days after irradiation. RESULTS: The irradiated hearts showed: 1

  18. Nonsurgical endodontic therapy along with minimal invasive treatment utilizing Bhasker's hypothesis for the management of infected radicular cystic lesion: A rare case report

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    Sanjeev Kumar Salaria

    2016-01-01

    Full Text Available Radicular cyst (RC is the most common odontogenic cyst of inflammatory origin affecting the jaws; involves the roots of the carious or traumatic non-vital tooth. Different therapeutic modalities, such as nonsurgical endodontic therapy or surgical enucleation with primary closure, decompression etc., were proposed for the management of such lesions. Presenting a case of a 28-year-old otherwise healthy male patient who reported with pain and swelling with respect to tooth #41, 31. Diagnosis of infected RC at a rare location was established on the basis of clinical, radiographical and fine needle aspiration cytological examination. Looking after the clinical characteristics, origin, extension, size of cystic lesion and patient cooperation; nonsurgical endodontic therapy utilizing Bhasker's hypothesis was opted. One year post-operative result suggested that nonsurgical endodontic therapy along with minimally invasive treatment utilizing Bhasker's hypothesis is an effective tool to transform infected radicular cystic lesion to healthy periapical periodontal tissue.

  19. Hereditariedade e suscetibilidade à reabsorção radicular em Ortodontia não se fundamentam: erros metodológicos e interpretativos repetidamente publicados podem gerar falsas verdades. Análise crítica do trabalho de Al-Qawasmi et al.² sobre a predisposição genética à reabsorção radicular de natureza ortodôntica Heredity and susceptibility to radicular resorption in Odontology do not base: methodological and interpretative repeatedly published mistakes can generate false truths. Critical analysis of Al-Qawasmi work about genetics predisposition to radicular reabsorption of orthodontic kind

    Directory of Open Access Journals (Sweden)

    Alberto Consolaro

    2004-05-01

    Full Text Available O trabalho de Al-Qawasmi et al.², publicado em agosto de 2003 no periódico Journal of Dental Research, procurou estabelecer um gene candidato para a hereditariedade e predisposição genética nas reabsorções dentárias em Ortodontia, mas apresentou e repetiu algumas limitações metodológicas e equívocos na interpretação de seu trabalho anterior de março de 2003¹. Nas conclusões afirmam explicitamente que os achados são preliminares e sugestivos, necessitando de confirmação por meio de estudos adicionais. Os resultados são correlacionados fundamentando-se em dados de outros autores sobre síndromes ósseas associadas a reabsorções por substituição, cervicais externas e não com as reabsorções radiculares externas apicais induzidas ortodonticamente. O gene da reabsorção radicular externa apical relacionada a tratamentos ortodônticos não foi determinado e muito menos a sua natureza hereditária. Nem tampouco, a suscetibilidade à reabsorção radicular em Ortodontia foi detectada ou provada. O trabalho analisado e os demais relacionados com o mesmo tema não conseguiram comprovar suas hipóteses porque ignoram que o primeiro passo para a reabsorção radicular externa é a destruição da camada cementoblástica e isto apenas ocorre a partir da ação de fatores locais. Analisando criticamente estes trabalhos podemos afirmar que procurar o gene da reabsorção radicular e da suscetibilidade a partir de pesquisas em mediadores e células clásticas demonstra a falta de um conhecimento completo e amplo da etiopatogenia deste importante fenômeno biológico, imprescindível para o estabelecimento da premissa dos trabalhos.The study of Al-Qawasmi et al.² published in August 2003 on Journal of Dental Research, aimed to establish a candidate gene for heritability and genetic predisposition to external root resorption in orthodontic patients. This paper, however, presents and repeated some methodological faults and equivocated

  20. Sistema radicular do fórmio, sisal e bambu imperial Root systems of new zealand flax, sisal, and imperial bamboo

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    Júlio César Medina

    1963-01-01

    Full Text Available Os autores apresentam e discutem os resultados de estudos preliminares sôbre o sistema radicular do fórmio (Phormium tenax Forster, sisal (Agave sisalana Perrine e bambu .imperial (Bambusa vulgaris Schrad. var. vittata A. ,& C, Riv.. Concluem, que o sistema radicular do fórmio é relativamente raso, o do sisal bastante superficial é o do bambu imperial se limitada às primeiras carnadas do solo.Results of preliminary studies on root-systems of New Zealand flax (Phormium tenax Forster, sisal (Agave sisalana Perrine, and imperial bamboo (Bambusa vulgaris Schrad. var. vittata A. & C. Riv. plants by the method of soil block, are apresented and discussed by the authors. According to local soil conditions, it is concluded that the root-system of New Zealand flax is relatively superficial, with the main concentration of roots in the 12 in. soil top layer. In sisal, the root-systems of the three plants investigated were found to occur in the soil surface layer, with more of 90% of the roots in the top 6 in. Finally, in the imperial bamboo clump atudied, the main concentration of roots was found in the layer 6-12 in. deep.

  1. "Estudo comparativo da resistência à infiltração que diferentes materiais resinosos utilizados na cimentação de retentores intra-radiculares oferecem à passagem de fluidos que atravessam a dentina"

    OpenAIRE

    Marcio Katsuyoshi Mukai

    2005-01-01

    O Objetivo deste estudo é avaliar in vitro, a resistência que diferentes materiais resinosos têm a passagem de fluidos que atravessam a dentina na ausência de cemento radicular. Foram utilizados 60 dentes humanos cedidos pelo banco de dentes da FOUSP. Os dentes foram submetidos a tratamento endodôntico segundo a técnica de Paiva e Antoniazzi e armazenados a uma temperatura de 37°C em umidade 100% por 24 horas para o preparo do retentor intra -radicular respeitando o limite apical de 4 mm. Os ...

  2. Ação do laser de Nd:YAG intracanal sobre endotoxinas na dentina radicular

    OpenAIRE

    Jose Ricardo de Freitas Archilla

    2007-01-01

    As endotoxinas são responsáveis por importantes reações sistêmicas e locais, podendo comprometer o sucesso do tratamento endodôntico. O hidróxido de cálcio, mesmo com limitações, mostra-se como opção única efetiva entre as soluções irrigadoras e as medicações intracanal na redução das endotoxinas nos túbulos dentinários. O experimento realizado avaliou a eficiência do laser de Nd:YAG frente à uma endotoxina inoculada no canal radicular pela utilização de duas cinemáticas de irradiação. Após u...

  3. [Assessment of rehabilitation progress in patients with cervical radicular pain syndrome after application of high intensity laser therapy - HILT and Saunders traction device].

    Science.gov (United States)

    Haładaj, Robert; Pingot, Julia; Pingot, Mariusz

    2015-07-01

    Osteoarthritis of the spine is a major global health problem, it is an epidemic of our times. It affects all parts of the spine, but the hardest to treat is its cervical region. The cervical spine is most mobile, delicate and sensitive to any load. It requires special care in conservative treatment. To date the selection of effective therapeutic approaches has been controversial. The aim of the study was to assess the progress of rehabilitation in patients with cervical radicular pain syndrome after using two different methods of treatment: HILT and spinal axial traction with the use of Saunders device. The randomized study included 150 patients (81 women and 69 men, aged 24-67 years, mean age 45.5) divided into two groups of 75 patients each with characteristic symptoms of radicular pain. The measurement of the range of cervical spine movement of the cervical spine, visual analog scale for pain - VAS and a NDI questionnaire (Neck Disability Index - Polish version) - an indicator of functional disorders - were used to evaluate the effectiveness of the two different therapies. The results obtained by Saunders method remained significantly higher than those obtained when HILT laser therapy was used for most of the examined parameters. A thorough analysis of the results showed greater analgesic efficacy, improved global mobility and reduced functional impairment in patients treated with Saunders method. Both therapeutic methods manifest analgesic effect and a positive impact on the improvement of range of cervical spine movement in patients with radicular pain in this spine region. HILT laser therapy and Saunders traction device reduce neck disability index in the treated patients. © 2015 MEDPRESS.

  4. Micro-CT evaluation of root and canal morphology of mandibular first premolars with radicular grooves

    Energy Technology Data Exchange (ETDEWEB)

    Boschetti, Emanuele; Mazzi-Chaves, Jardel Francisco; Versiani, Marco Aurélio; Pécora, Jesus Djalma; Saquy, Paulo Cesar; Sousa Neto, Manoel Damião de, E-mail: sousanet@forp.usp.br [Universidade de São Paulo (USP), Ribeirao Preto, SP (Brazil). Departamento de Odontologia Restauradora; Silva-Sousa, Yara Terezinha Correa; Leoni, Graziela Bianchi [Universidade de Ribeirão Preto (UNAERP), Ribeirão Preto, SP (Brazil). Departmento de Endodontia

    2017-09-15

    The aim of this study was to evaluate morphological features of 70 single-rooted mandibular first premolars with radicular grooves (RG) using micro-CT technology. Teeth were scanned and evaluated regarding the morphology of the roots and root canals as well as length, depth and percentage frequency location of the RG. Volume, surface area and Structure Model Index (SMI) of the canals were measured for the full root length. Two-dimensional parameters and frequency of canal orifices were evaluated at 1, 2, and 3 mm levels from the apical foramen. The number of accessory canals, the dentin thickness, and cross-sectional appearance of the canal at different root levels were also recorded. Expression of deep grooves was observed in 21.42% of the sample. Mean lengths of root and RG were 13.43 mm and 8.5 mm, respectively, while depth of the RG ranged from 0.75 to 1.13 mm. Mean canal volume, surface area and SMI were 10.78 mm{sup 3}, 58.51 mm{sup 2}, and 2.84, respectively. Apical delta was present in 4.35% of the sample and accessory canals were observed mostly at the middle and apical thirds. Two-dimensional parameters indicated an oval-shaped cross-sectional appearance of the root canal with a high percentage frequency of canal divisions (87.15%). Canal configuration type V (58.57%) was the most prevalent. C-shaped configuration was observed in 13 premolars (18.57%), whereas dentin thickness ranged from 1.0 to 1.31 mm. Radicular grooves in mandibular first premolars was associated with the occurrence of several anatomical complexities, including C-shaped canals and divisions of the main root canal. (author)

  5. Micro-CT evaluation of root and canal morphology of mandibular first premolars with radicular grooves

    International Nuclear Information System (INIS)

    Boschetti, Emanuele; Mazzi-Chaves, Jardel Francisco; Versiani, Marco Aurélio; Pécora, Jesus Djalma; Saquy, Paulo Cesar; Sousa Neto, Manoel Damião de; Silva-Sousa, Yara Terezinha Correa; Leoni, Graziela Bianchi

    2017-01-01

    The aim of this study was to evaluate morphological features of 70 single-rooted mandibular first premolars with radicular grooves (RG) using micro-CT technology. Teeth were scanned and evaluated regarding the morphology of the roots and root canals as well as length, depth and percentage frequency location of the RG. Volume, surface area and Structure Model Index (SMI) of the canals were measured for the full root length. Two-dimensional parameters and frequency of canal orifices were evaluated at 1, 2, and 3 mm levels from the apical foramen. The number of accessory canals, the dentin thickness, and cross-sectional appearance of the canal at different root levels were also recorded. Expression of deep grooves was observed in 21.42% of the sample. Mean lengths of root and RG were 13.43 mm and 8.5 mm, respectively, while depth of the RG ranged from 0.75 to 1.13 mm. Mean canal volume, surface area and SMI were 10.78 mm 3 , 58.51 mm 2 , and 2.84, respectively. Apical delta was present in 4.35% of the sample and accessory canals were observed mostly at the middle and apical thirds. Two-dimensional parameters indicated an oval-shaped cross-sectional appearance of the root canal with a high percentage frequency of canal divisions (87.15%). Canal configuration type V (58.57%) was the most prevalent. C-shaped configuration was observed in 13 premolars (18.57%), whereas dentin thickness ranged from 1.0 to 1.31 mm. Radicular grooves in mandibular first premolars was associated with the occurrence of several anatomical complexities, including C-shaped canals and divisions of the main root canal. (author)

  6. Assessment of radicular dentin permeability after irradiation with CO2 laser and endodontic irrigation treatments with thermal imaging

    Science.gov (United States)

    Cho, Heajin; Lee, Robert C.; Chan, Kenneth H.; Fried, Daniel

    2017-02-01

    Previous studies have demonstrated that the permeability changes due to the surface modification of dentin can be quantified via thermal imaging during dehydration. The CO2 laser has been shown to remove the smear layer and disinfect root canals. Moreover, thermal modification via CO2 laser irradiation can be used to convert dentin into a highly mineralized enamel-like mineral. The purpose of this study is to evaluate the radicular dentin surface modification after CO2 laser irradiation by measuring the permeability with thermal imaging. Human molar specimens (n=12) were sectioned into 4 axial walls of the pulp chamber and treated with either 10% NaClO for 1 minute, 5% EDTA for 1 minute, CO2 laser or none. The CO2 laser was operated at 9.4 μm with a pulse duration of 26 μs, pulse repetition rate of 300 Hz and a fluence of 13 J/cm2. The samples were dehydrated using an air spray for 60 seconds and imaged using a thermal camera. The resulting surface morphological changes were assessed using 3D digital microscopy. The images from digital microscopy confirmed melting of the mineral phase of dentin. The area enclosed by the time-temperature curve during dehydration, ▵Q, measured with thermal imaging increased significantly with treatments with EDTA and the CO2 laser (Ptreatment increases permeability of radicular dentin.

  7. Development of a patient-reported outcome instrument for patients with lumbar radicular pain

    DEFF Research Database (Denmark)

    Ibsen, Charlotte; Schiøttz-Christensen, Berit; Nielsen, Claus Vinther

    Background: Low back pain (LBP) is the leading contributor to years lived with disability. It is a complex biopsychosocial phenomenon where complete differential diagnosis and assessment is difficult and needs to be comprehensive. Therefore a biopsychosocial approach is recommended. Substantial...... pain. Methods: The development of the PRO will be based on ICF Comprehensive Core Set for Low Back Pain and Rehabilitation Set and existing items from the The Patient-Reported Outcomes Measurement Information System (PROMIS®). The development process will be divided into five steps: 1. Linking PROMIS....... Conclusion(s) : A PRO instrument is developed to systematise and qualify the description on functioning among patients with lumbar radicular pain. The development process is in progress and next step is to engage patients and clinicians in the development process.  Implications : With development of this PRO...

  8. Sistema radicular de porta-enxertos micropropagados de macieira colonizados com fungos micorrízicos arbusculares Root architecture of apple rootstocks inoculated with arbuscular mycorrhizal fungi

    Directory of Open Access Journals (Sweden)

    Lucir Maria Locatelli

    2002-09-01

    Full Text Available A arquitetura do sistema radicular tem implicações na capacidade da planta de obter nutrientes e água do solo; aspecto, este, não muito considerado nos estudos de desenvolvimento vegetal. O objetivo deste trabalho foi avaliar o comportamento do sistema radicular de dois porta-enxertos micropropagados de macieira (Malus spp., em razão da associação micorrízica. Foram utilizados um porta-enxerto vigoroso e com grande capacidade de enraizamento (Marubakaido e outro ananicante e com sistema radicular pouco desenvolvido (M.9. As plantas oriundas de micropropagação foram transferidas para substrato à base de solo, a fim de serem enraizadas ex vitro. Antes ou após o enraizamento, inoculou-se uma mistura de três isolados de fungos micorrízicos arbusculares ou um filtrado com a biota não-micorrízica do inoculante. Aos 51 e 81 dias, avaliaram-se o número e o comprimento de eixos radiculares e das raízes de ordem 1, 2, 3 e 4. A inoculação micorrízica antes do enraizamento aumentou o número e o comprimento de raízes do porta-enxerto Marubakaido, porém, o portaenxerto M.9 teve o número e o comprimento de raízes diminuído quando a inoculação micorrízica ocorreu antes da fase de enraizamento.Root architecture is scarcely considered in plant physiology studies, despite its great importance to plant growth and development. In order to evaluate the behavior of the root systems of two varieties of apple (Malus spp. rootstock when subjected to mycorrhizal association. Two apple rootstocks were tested: Marubakaido, which is vigorous and roots easily, and M.9, which is dwarfing and poorly rooted. The micropropagated plantlets were transferred to a soil-based substrate and received AMF inoculum, or its non-mycorrhizal biota, before and after a 21-day rooting and weaning period. After 51 and 81 days, the number and length of root axes and of first-, second-, third- and fourth- order roots were evaluated. AMF inoculation before weaning and

  9. Manejo de conductos radiculares con curvatura marcada

    Directory of Open Access Journals (Sweden)

    Jorge Mario Nuñez Duran

    2013-10-01

    Full Text Available Las variaciones anatómicas en dientes con conductos que poseen dilaceraciones hacen del tratamiento de endodonciaun reto o una complicación relativa, en donde el clínico debe desarrollar toda su habilidad y el uso de instrumentosespeciales que faciliten u optimicen la terapia de conductos radiculares. La toma de radiografías previas con diferentesangulaciones y el estudio minucioso de ellas, darán una ayuda fundamental para conocer más detalladamente estacomplicación anatómica, que en algunos casos es muy frecuente. El uso de instrumental más flexible y resistentepermite llegar con mayor precisión y seguridad a la parte apical sin que se corra el riesgo de fracturar los instrumentos,limpiándolos y modelándolos en toda su extensión para poder obturarlos de una manera correcta.El uso de limas de menor calibre, precurvadas, permite acceder a la porción dilacerada de la raíz. Este es un métodoeficaz para prevenir la perdida de longitud de trabajo y evitar así las perforaciones de las raíces durante la preparación.Dentro de los errores más comunes durante la instrumentación de los conductos está la perdida de longitud detrabajo, junto con la transportación del foramen apical, ya sea de manera externa o interna. En el presente artículose menciona el uso de nuevas y mejores técnicas usadas para poder evitar este tipo de errores y se muestra un casoclínico del manejo de un molar superior con una curvatura de 40 grados que fue preparado y obturado exitosamentecon el sistema Protaper (Dentsply- maillefer.

  10. A STUDY OF ROOT CANAL MORPHOLOGY OF Cebus apella TEETH ESTUDO ANATÔMICO DO CANAL RADICULAR DE DENTES DE Cebus apella

    Directory of Open Access Journals (Sweden)

    Priscilla Rocha Afonso

    2008-12-01

    Full Text Available Realizou-se um estudo anatômico em dentes do Cebus apella, para análise da anatomia interna do canal radicular dessa espécie, normatizando seu uso como modelo experimental. Utilizaram-se doze animais adultos. Após a remoção do tecido orgânico, os dentes foram removidos, seccionados e fotografados, sendo analisados com um estereomicroscópio. Os resultados mostraram que os dentes apresentaram características semelhantes às dos seres humanos, mas com algumas peculiaridades, tais como: a anatomia do canal radicular variou de oval para circular; nos caninos inferiores, os canais são semelhantes a um rim, o que reflete o contorno externo da raiz; nos molares superiores, os canais mesiobucal e distobucal são ovais, seguindo o contorno geral do dente. Os autores concluem que esta espécie pode ser utilizada como modelo em pesquisas odontológicas, principalmente em estudos do tratamento do sistema de canal radicular.

    PALAVRAS-CHAVES: Anatomia, dentes, Cebus apella. An anatomic study of Cebus apella root teeth was performed to analyze the internal anatomy of permanent dentition, normalizing its use as experimental model endodontic research. Twelve adult animals were used in this study. After the removal of the organic tissue, the all teeth were removed, sectioned, analyzed and photographed with a stereomicroscope. The results showed that the anatomy of root canal of this species are similar to human dental anatomy, considering the shape, pathway and number of canals, but with some peculiarities, such as: the root canal anatomy varied from oval to circular; in the lower canines, the canals are resembled a kidney, reflecting the outside contour of the root; in the upper molars, the mesiobuccal and distobuccal canals are oval, following the general contour of the tooth. The authors conclude that this primate can be applied as models for study of root canal treatment in human beings, in special the upper central and lateral incisors

  11. Pain patterns and descriptions in patients with radicular pain: Does the pain necessarily follow a specific dermatome?

    Directory of Open Access Journals (Sweden)

    Hurwitz Eric L

    2009-09-01

    Full Text Available Abstract Background It is commonly stated that nerve root pain should be expected to follow a specific dermatome and that this information is useful to make the diagnosis of radiculopathy. There is little evidence in the literature that confirms or denies this statement. The purpose of this study is to describe and discuss the diagnostic utility of the distribution of pain in patients with cervical and lumbar radicular pain. Methods Pain drawings and descriptions were assessed in consecutive patients diagnosed with cervical or lumbar nerve root pain. These findings were compared with accepted dermatome maps to determine whether they tended to follow along the involved nerve root's dermatome. Results Two hundred twenty-six nerve roots in 169 patients were assessed. Overall, pain related to cervical nerve roots was non-dermatomal in over two-thirds (69.7% of cases. In the lumbar spine, the pain was non-dermatomal in just under two-thirds (64.1% of cases. The majority of nerve root levels involved non-dermatomal pain patterns except C4 (60.0% dermatomal and S1 (64.9% dermatomal. The sensitivity (SE and specificity (SP for dermatomal pattern of pain are low for all nerve root levels with the exception of the C4 level (Se 0.60, Sp 0.72 and S1 level (Se 0.65, Sp 0.80, although in the case of the C4 level, the number of subjects was small (n = 5. Conclusion In most cases nerve root pain should not be expected to follow along a specific dermatome, and a dermatomal distribution of pain is not a useful historical factor in the diagnosis of radicular pain. The possible exception to this is the S1 nerve root, in which the pain does commonly follow the S1 dermatome.

  12. Microstructural and rheological properties of irradiated rice Propriedades microestrutural e reológica de arroz irradiado

    Directory of Open Access Journals (Sweden)

    Ívina Catarina de Oliveira Guimarães

    2013-06-01

    Full Text Available The culinary quality of rice directly results in its market value and consumer acceptance. Thus, the present study evaluated the effect of gamma irradiation on the properties of the polished white rice starch, as well as their characteristic pulp. Doses of 6.5 kGy and 7.5 kGy did not alter the microstructure of rice starch granules, but interfered with rheological properties when compared to the control treatment, resulting in a reduction of the maximum and final viscosity and retrogradation. Since the microstructural and rheological properties within the values associated with rice quality, it was inferred that gamma irradiation did not alter the decisive characteristics for the acceptability of this cereal.A qualidade culinária do arroz resulta diretamente em seu valor de mercado e aceitação do consumidor. Assim, no presente estudo, avaliou-se o efeito da irradiação gama sobre as propriedades do amido do arroz branco polido, bem como na sua característica de pasta. Doses de 6,5 kGy e 7,5 kGy não alteraram a microestrutura dos grânulos de amido de arroz, mas interferiram nas propriedades reológicas quando comparado ao tratamento controle, resultando na redução da viscosidade máxima e final; e retrogradação. Esse resultado pode estar correlacionado à presença de radicais livres no arroz branco polido recém-irradiado, os quais se estabilizaram ao passar quatro meses. Desde que as propriedades microestruturais e reológicas se encontrem dentro dos valores associados à qualidade do arroz, a irradiação gama não altera as características determinantes para a aceitação do cereal.

  13. Efecto del follaje de Tagetes minuta sobre la nodulación radicular de Meloidogyne incognita en Capsicum annuum, en invernadero

    OpenAIRE

    Murga-Gutiérrez, Santos Nélida; Alvarado-Ibáñez, Juan Carlos; Vera-Obando, Nora Yessenia

    2012-01-01

    Se investigó el efecto del follaje del "huacatay" Tagetes minuta sobre la nodulación radicular producida por el nematodo Meloidogyne incognita que parasita el "pimiento páprika" Capsicum annuum cultivado en invernadero, con la finalidad de obtener una alternativa de control de este nematodo. Se utilizaron tres grupos experimentales y un testigo, con 12 macetas cada uno, las cuales contenían suelo y arena estériles (1:1). A este substrato se adicionó el follaje de T. minuta al 20, 35 y 50% (v/...

  14. Estudo da reabsorção radicular apical após o uso de aparelho extrabucal no tratamento da má oclusão do tipo Classe II, 1ª divisão dentária Study of apical root resorption after occipital headgear wear on the treatment of dental Class II, division 1 malocclusion

    Directory of Open Access Journals (Sweden)

    Vânia Célia Vieira de Siqueira

    2009-04-01

    Full Text Available OBJETIVO: o presente estudo verificou o efeito do uso do aparelho extrabucal (AEB sobre a intensidade da reabsorção radicular apical nos primeiros molares permanentes superiores submetidos à ação do aparelho. MÉTODOS: foram avaliadas as radiografias periapicais da região dos primeiros molares permanentes superiores, bilateralmente, de 19 jovens leucodermas, do gênero feminino, com idades entre 8 e 10 anos, com má oclusão do tipo Classe II, 1ª divisão dentária, pré e pós-tratamento com AEB de tração alta. As 76 radiografias foram divididas em dois grupos, de acordo com o grau de formação radicular. O grupo A consistiu de 18 radiografias com formação radicular incompleta, com exceção da raiz palatina, ao início do tratamento e 18 ao final. O grupo B consistiu de 20 radiografias com formação radicular completa ao início do tratamento e 20 ao final. Mensurou-se os comprimentos radiculares utilizando um paquímetro digital e submeteu-se as medidas obtidas ao teste de erro do método e à análise estatística (teste t de Student para verificar as diferenças no comprimento radicular antes e após o tratamento com o AEB. RESULTADOS: no grupo A ocorreu um aumento significativo dos comprimentos radiculares, enquanto no grupo B as diferenças dos comprimentos radiculares não foram significativas. As medidas pós-tratamento no grupo A não diferiram das medidas pré-tratamento no grupo B, ou seja, os dentes com formação radicular incompleta ao início do tratamento apresentaram crescimento radicular normal durante o tratamento ativo. CONCLUSÃO: concluiu-se que o uso do AEB não influenciou negativamente na formação radicular e não provocou reabsorção apical nos molares submetidos à ação do aparelho, sugerindo que o AEB não apresentou riscos à estrutura e formação radicular quando corretamente indicado e aplicado.AIM: The aim of this study was to verify the effect of occipital headgear wear on the intensity of

  15. Análise da Fragilidade do Core - Quando reconstruído com diferentes resinas e pinos pré-fabricados não metálicos

    OpenAIRE

    Ávilal, Gisseli Bertozzi; Dias, Sérgio Cândido; Ribeiro, José Carlos Rabelo; Gomes, Priscila Nogueira; Moysés, Marcos Ribeiro

    2016-01-01

    Para realização deste estudo vinte condutos artificiais foram construídos em blocos formados por esmalte e dentina, a partir de dentes bovinos. Dez pinos de fibra de vidro e dez de fibra de carbono foram cimentados nos condutos com cimento resinoso C&B. Empregou-se matriz de policarbonato para confecção do core em resina composta, perfazendo quatro grupos: Grupo (1) pino de fibra de vidro e core com resina composta Charisma; Grupo (2) pino de fibra de carbono e core com resina composta Charis...

  16. Radicular Cyst With Actinomycotic Infection in an Upper Anterior Tooth

    Directory of Open Access Journals (Sweden)

    Shuei-Kuen Tseng

    2009-10-01

    Full Text Available Actinomycosis is an infection caused by filamentous, branching, Gram-positive anaerobic bacteria. It rarely infects the jawbone. This case report describes a patient with a left maxillary central incisor with an apical lesion and actinomycotic infection. A 23-year-old male patient underwent conventional root canal treatment of tooth 21, in a local dental clinic for about 1 year. However, percussion pain and a sinus tract that originated from tooth 21 were still present after treatment. Nonsurgical root canal treatment of tooth 21 was performed again but failed to relieve the symptoms. Therefore, apicoectomy and retrograde filling of the apical root canal with mineral trioxide aggregate were carried out. Periradicular bony defect was grafted by biocompatible material, and postoperative antibiotics (250 mg amoxicillin were given three times daily for 5 days. Pathological examination of the removed periapical tissue showed a radicular cyst with actinomycosis. At the 9-month postoperative recall, the sinus tract had disappeared and radiographic examination showed healing of the apical lesion. Periradicular actinomycosis is one important reason for failure of nonsurgical endodontic treatment. Clinically, if the tooth shows a recurrent sinus tract and poor response to conventional root canal treatment combined with antibiotic control, apical actinomycotic infection should be highly suspected, and an alternative endodontic surgical approach is needed for successful treatment.

  17. Arquitetura do sistema radicular do porta-enxerto de videira 'IAC 766' na época de transplante do viveiro para o campo Root architecture of IAC 766 grapevine rootstock in the transplanting from the nursery to the field

    Directory of Open Access Journals (Sweden)

    Ricardo Sfeir de Aguiar

    2006-12-01

    Full Text Available Na propagação de porta-enxertos de videira por estaquia em recipientes para posterior transplante ao campo, é importante evitar danos ao sistema radicular. O objetivo do trabalho foi determinar, por meio da avaliação da arquitetura do sistema radicular, a melhor fase de desenvolvimento da muda para o transplante, ao campo, do porta-enxerto de videira 'IAC 766' Campinas, em Marialva - PR. As plantas foram avaliadas aos 60; 90; 120; 150 e 180 dias após a estaquia lenhosa em substratos contidos em sacos plásticos de 20cm de largura por 30cm de altura. As raízes foram expostas e fotografadas, avaliando-se comprimento e área do sistema radicular pelo programa SIARCS 3.0. Foi utilizado também um diagrama de arquitetura radicular, atribuindo-se notas à conformação do sistema radicular e foi contado o número de raízes enoveladas. O delineamento experimental utilizado foi o de blocos inteiramente ao acaso, com cinco tratamentos e cinco repetições, com 10 plantas por parcela. Os dados foram submetidos à análise de regressão polinomial. Todas as características, com exceção das notas da arquitetura do sistema radicular, ajustaram-se ao modelo de regressão linear crescente. A melhor fase para o transplante da muda do porta-enxerto 'IAC 766' para o campo é aos 90 dias após a estaquia.In grapevine propagation with cuttings in containers it is important to avoid damages to root system during transplanting to the field. The aim of this research was to determine, by means of root system evaluation, the best period to transplant 'IAC 766' (Campinas rootstock. The trial was set up in July 2004 in Marialva County (PR. The plants were evaluated 60, 90, 120, 150 and 180 days after the establishment of woody cutting in plastic bags of 20cm wide and 30cm high. The roots were exposed and pictures were taken in lateral and top positions and were evaluated by SIARCS 3.0 software, with determination of the area and the length of the root system

  18. A STUDY OF ROOT CANAL MORPHOLOGY OF Cebus apella TEETH ESTUDO ANATÔMICO DO CANAL RADICULAR DE DENTES DE Cebus apella

    OpenAIRE

    Priscilla Rocha Afonso; Leila Marques Araújo; Rafael Rodrigues Lima; Suely Maria Lamarão

    2008-01-01

    Realizou-se um estudo anatômico em dentes do Cebus apella, para análise da anatomia interna do canal radicular dessa espécie, normatizando seu uso como modelo experimental. Utilizaram-se doze animais adultos. Após a remoção do tecido orgânico, os dentes foram removidos, seccionados e fotografados, sendo analisados com um estereomicroscópio. Os resultados mostraram que os dentes apresentaram características semelhantes às dos seres humanos, mas com algumas peculiaridades, tais como: a anatomia...

  19. Análise topográfi ca, diametral e quantitativa de túbulos dentinários em canais radiculares de dentes

    OpenAIRE

    Siviero, Mariana; Aivazoglou, Marcos U.; Camargo, Samira E. A.; Camargo, Carlos Henrique R.; Valera, Márcia C.

    2010-01-01

    O objetivo deste estudo foi avaliar o número e o diâmetro de túbulos dentinários em canais radiculares, nos diferentes terços, em dentes humanos, visando auxiliar estudos na área da permeabilidade dentinária. Para tal, foram utilizados 24 dentes humanos prémolares hígidos, divididos em 4 grupos de acordo com faixas etárias - G1: 10-15; G2: 16-30; G3: 31-45: G4: 46-80 anos de idade. Os dentes tiveram suas coroas removidas, se...

  20. Estudo comparativo da reabsorção radicular apical em pacientes bruxônomos e pacientes sem sinais clínicos de desgaste dentário Comparative study of apical root resorption in patients whith bruxism and without clinical signs of dental wearing

    Directory of Open Access Journals (Sweden)

    Rebeca Odebrech

    2004-05-01

    Full Text Available A reabsorção radicular, assim como o bruxismo, são temas amplamente abordados na literatura, contudo, a associação dos mesmos ainda permanece pouco documentada. Desse modo, esta pesquisa objetiva comparar pacientes portadores de bruxismo e pacientes sem sinais clínicos de desgaste dentário em relação à quantidade de reabsorção radicular apical nos incisivos superiores. Para tanto foram avaliados clínica e radiograficamente 64 pacientes, perfazendo um total de 256 incisivos acompanhados. Os resultados demonstram que há uma correlação positiva entre bruxismo e reabsorção radicular.Root resorption and bruxism are largely study in literature. However their association still remains few documented. The aim of this study is compare the quantity of apical root resorption in upper permanent incisors in patients with bruxism and without clinical signs of dental wearing. 64 patients (256 incisors were evaluated clinical and radiografically. The results shows the correlation between bruxism and root resorption.

  1. Efeito do tratamento do canal radicular com EDTA na retenção de pinos de fibra de vidro

    OpenAIRE

    Luis Alfonso Arana Gordillo

    2010-01-01

    A proposição deste estudo foi analisar o efeito do tratamento da dentina radicular com EDTA na retenção de pinos de fibra de vidro utilizando dois tipos diferentes de cimentos resinosos. Foram utilizados 40 dentes humanos pré-molares hígidos. Após a extração os dentes foram armazenados em água até seu uso. Em seguida, os dentes foram tratados endodonticamente com técnica step back para ser obturados por condensação lateral com cones de guta percha e cimento endodôntico AH Plus. Após a obturaç...

  2. Effect of lincomycin treatment of root surface in dental replantation: a study in rats = Efeito da lincomicina como tratamento da superfície radicular no reimplante de dentes: estudo em ratos

    Directory of Open Access Journals (Sweden)

    Silva, Daniela Nascimento

    2009-01-01

    Full Text Available Objetivo: Estudos sobre antibióticos usados topicamente na superfície radicular de dentes avulsionados buscam avaliar suas propriedades anti-reabsortivas que favoreçam o reparo do ligamento periodontal e o restabelecimento da articulação dentoalveolar. Neste mesmo propósito, esta pesquisa avaliou o efeito da lincomicina na superfície radicular, antes do reimplante. Metodologia: Dez ratos foram distribuídos em dois grupos de 05 animais (I – controle e II – experimental. O incisivo superior direito dos animais foi extraído e estocado em leite por 30 min. Em seguida, no grupo I, os dentes foram irrigados com soro fisiológico e reimplantados; no grupo II, os incisivos foram imersos em lincomicina por 5 min, antes do reimplante. Os animais foram eutanasiados no 21º dia pós-operatório e a hemimaxila direita submetida a cortes histológicos, corados em HE, para avaliação microscópica. Resultados: No grupo I, o ligamento periodontal apresentou-se disperso, com infiltrado linfoplasmocitário moderado a intenso e a articulação dentoalveolar não foi restabelecida; no grupo II, notou-se completo reparo do ligamento, poucas células inflamatórias e pequenas áreas de reabsorção inflamatória e anquilose. Conclusões: o uso tópico da lincomicina no tratamento da superfície radicular promoveu o reparo do ligamento periodontal, reduziu o processo inflamatório, mas ainda foram observadas áreas de reabsorção inflamatória e anquilose

  3. Efeitos de sistemas de cultivo na densidade e macroporosidade do solo e no desenvolvimento radicular do milho em latossolo roxo Effects of tillage systems on bulk density, aeration porosity and root development of corn in a typic haplorthox soil

    Directory of Open Access Journals (Sweden)

    Paulo César Corsini

    1999-02-01

    Full Text Available Neste trabalho foram estudados os efeitos imediato e residual de dois sistemas de preparo na densidade e macroporosidade do solo e no desenvolvimento radicular do milho (Zea mays L., em camadas estruturalmente estabilizadas de um Latossolo Roxo, mantido por longo período sob plantio direto de milho. Os efeitos imediatos das operações envolvendo a subsolagem e a aração e gradagem aumentaram, em menos de um ano agrícola, a macroporosidade da camada superficial desse solo bem como o potencial de desenvolvimento radicular. Nesses tratamentos e nos três primeiros anos agrícolas, a adoção contínua do sistema de plantio direto diminuiu a porosidade de aeração do solo e o potencial de desenvolvimento radicular do milho. Os benefícios da manutenção desse sistema conservacionista nos valores de macroporosidade e densidade na camada superficial do solo iniciaram-se no quarto ano agrícola. A partir daí aumentaram, atingindo no oitavo ano agrícola consecutivo valores semelhantes aos imediatamente obtidos após as operações mecânicas realizadas na instalação do experimento. As relações entre desenvolvimento radicular, densidade e macroporosidade do solo foram estabelecidas por equações bem como por classes de desenvolvimento radicular.The objective of this study was to evaluate the immediate and the residual effects of soil preparation on bulk density, aeration porosity and root development relationships in stabilized structural layers of a typic Haplorthox soil due to long-term no-tillage system of corn (Zea mays L..The immediate effects of soil preparation to planting involving subsoiling, plowing, and disking improved soil macroporosity and root development for a short period of time. In these treatments and on the first three consecutive years, the adoption of continuous no-tillage management decreased soil macroporosity and root development. The long-term benefits of continuous no-tillage on soil macroporosity initiated at the

  4. Radiofrequency for the Treatment of Lumbar Radicular Pain: Impact on Surgical Indications.

    Science.gov (United States)

    Trinidad, José Manuel; Carnota, Ana Isabel; Failde, Inmaculada; Torres, Luis Miguel

    2015-01-01

    Study Design. Quasiexperimental study. Objective. To investigate whether radiofrequency treatment can preclude the need for spinal surgery in both the short term and long term. Background. Radiofrequency is commonly used to treat lumbosacral radicular pain. Only few studies have evaluated its effects on surgical indications. Methods. We conducted a quasiexperimental study of 43 patients who had been scheduled for spinal surgery. Radiofrequency was indicated for 25 patients. The primary endpoint was the decision of the patient to reject spinal surgery 1 month and 1 year after treatment (pulsed radiofrequency of dorsal root ganglion, 76%; conventional radiofrequency of the medial branch, 12%; combined technique, 12%). The primary endpoint was the decision of the patient to reject spinal surgery 1 month and 1 year after treatment. In addition, we also evaluated adverse effects, ODI, NRS. Results. We observed after treatment with radiofrequency 80% of patients rejected spinal surgery in the short term and 76% in the long term. We conclude that radiofrequency is a useful treatment strategy that can achieve very similar outcomes to spinal surgery. Patients also reported a very high level of satisfaction (84% satisfied/very satisfied). We also found that optimization of the electrical parameters of the radiofrequency improved the outcome of this technique.

  5. Radiofrequency for the Treatment of Lumbar Radicular Pain: Impact on Surgical Indications

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    José Manuel Trinidad

    2015-01-01

    Full Text Available Study Design. Quasiexperimental study. Objective. To investigate whether radiofrequency treatment can preclude the need for spinal surgery in both the short term and long term. Background. Radiofrequency is commonly used to treat lumbosacral radicular pain. Only few studies have evaluated its effects on surgical indications. Methods. We conducted a quasiexperimental study of 43 patients who had been scheduled for spinal surgery. Radiofrequency was indicated for 25 patients. The primary endpoint was the decision of the patient to reject spinal surgery 1 month and 1 year after treatment (pulsed radiofrequency of dorsal root ganglion, 76%; conventional radiofrequency of the medial branch, 12%; combined technique, 12%. The primary endpoint was the decision of the patient to reject spinal surgery 1 month and 1 year after treatment. In addition, we also evaluated adverse effects, ODI, NRS. Results. We observed after treatment with radiofrequency 80% of patients rejected spinal surgery in the short term and 76% in the long term. We conclude that radiofrequency is a useful treatment strategy that can achieve very similar outcomes to spinal surgery. Patients also reported a very high level of satisfaction (84% satisfied/very satisfied. We also found that optimization of the electrical parameters of the radiofrequency improved the outcome of this technique.

  6. Cognitive Impairment in Patients with Chronic Neuropathic or Radicular Pain: An Interaction of Pain and Age

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    Orla Moriarty

    2017-06-01

    Full Text Available A growing body of empirical research has confirmed an association between chronic pain and cognitive dysfunction. The aim of the present study was to determine whether cognitive function is affected in patients with a diagnosis of chronic neuropathic or radicular pain relative to healthy control participants matched by age, gender, and years of education. We also examined the interaction of pain with age in terms of cognitive performance. Some limitations of previous clinical research investigating the effects of chronic pain on cognitive function include differences in the pain and cognitive scale materials used, and the heterogeneity of patient participants, both in terms of their demographics and pathological conditions. To address these potential confounds, we have used a relatively homogenous patient group and included both experimental and statistical controls. We have also specifically investigated the interaction effect of pain and age on cognitive performance. Patients (n = 38 and controls (n = 38 were administered a battery of cognitive tests measuring IQ, spatial and verbal memory, attention, and executive function. Educational level, depressive symptoms, and state anxiety were assessed as were medication usage, caffeine, and nicotine consumption to control for possible confounding effects. Both the level of depressive symptoms and the state anxiety score were higher in chronic pain patients than in matched control participants. Chronic pain patients had a lower estimated IQ than controls, and showed impairments on measures of spatial and verbal memory. Attentional responding was altered in the patient group, possibly indicative of impaired inhibitory control. There were significant interactions between chronic pain condition and age on a number of cognitive outcome variables, such that older patients with chronic pain were more impaired than both age-matched controls and younger patients with chronic pain. Chronic pain did not appear

  7. Densidade do solo, atributos químicos e sistema radicular do milho afetados pelo pastejo e manejo do solo

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    V. R. Silva

    2000-03-01

    Full Text Available A integração lavoura-pecuária é uma alternativa de renda dos produtores no sul do Brasil. Entretanto, o pisoteio animal e, ou, o preparo de solo podem compactá-lo, prejudicando o crescimento radicular e a produtividade das plantas. Estudaram-se os efeitos do pisoteio animal em regime de pastejo contínuo durante o inverno/primavera e do impacto do plantio direto e do preparo convencional de solo no estado de compactação, atributos químicos e distribuição radicular. Em Podzólico Vermelho-Amarelo de textura superficial franca, foi implantada uma pastagem de estação fria composta por aveia (Avena strigosa Schreb e azevém (Lolium multiflorum L.. A carga animal variou conforme o crescimento da pastagem. Em dezembro de 1996, foi implantada a cultura do milho (Zea mays L. para a produção de silagem, usando os seguintes tratamentos: plantio direto na área não pastejada, plantio direto após o pastejo, preparo convencional de solo na área não pastejada e preparo convencional de solo após pastejo. As avaliações apresentadas neste estudo são referentes ao terceiro ano de cultivo, no qual houve um período de pastejo de 107 dias. Aos 45 dias da emergência do milho, foram abertas trincheiras (100 x 40 cm para visualizar a distribuição do sistema radicular e coletar amostras de solo, a cada 5 cm, para caracterização química e determinação da densidade do solo e de raízes. Ao longo do perfil (0-40 cm, o desenho da distribuição de raízes indicou maior quantidade de raízes no preparo convencional de solo, concordando com os resultados de densidade de raízes. O pisoteio animal não teve efeito sobre as características físicas, possivelmente pelo fato de o resíduo da pastagem permanecer próximo a 1,0 Mg ha-1 de matéria seca. A densidade do solo no plantio direto, na camada de 5-10 cm, foi de 1,41 Mg m-3, tanto na área pastejada como na não pastejada. No preparo convencional de solo, esses valores foram de 1,15 Mg m-3

  8. Alterações químicas e nutricionais do grão-de-bico (Cicer arietinum L. cru irradiado e submetido à cocção Nutritional and chemical alteration of raw, irradiated and cooked chickpea (Cicer arietinum L.

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    Andréa Cristina Penati Ferreira

    2006-03-01

    Full Text Available O presente trabalho teve por objetivos analisar, em grãos não submetidos à irradiação, a composição centesimal e mineral, para verificar as alterações provocadas pela cocção. Em grãos crus e cozidos, não irradiados (controle e irradiados (doses de 2, 4, 6, 8 e 10 kGy, foram realizadas também as análises de: disponibilidade de ferro in vitro, digestibilidade da proteína in vitro e perfil de aminoácidos. Os resultados das análises dos minerais demonstraram que ocorreu diminuição significativa (pThe work objective was analyzing, in chickpea seeds not irradiated, the centesimal and mineral composition to verifying the alterations on the nutritional characteristics caused by the cooking process. Also were carried out analysis of the iron availability in vitro, protein digestibility in vitro and the profile of amino acids in the raw and cooked in the control and irradiated seeds (doses of 2, 4, 6, 8 and 10 kGy. The results of the mineral analysis showed that only phosphorus decrease significantly (p<0.05 with cooking process. At the centesimal composition, ash and carbohydrates available decreased significantly (p<0,05. In the control and in the doses of 4 and 6 kGy the cooking hasn't influenced the digestibility of the protein, but the treatments that received radiation doses of 2, 8 and 10 kGy were influenced. The cooked chickpea has shown better digestibility in higher doses of radiation although the treatments have shown low digestibility. The raw chickpea presented a better dialysis of iron in the control and in the doses 2 and 4 kGy and the cooked chickpea presented improvement according to the increase of radiation doses. In relation to essential amino acids, chickpea has presented an adequate nutritional value, except for methionine.

  9. Biomassa radicular e reservas orgânicas em coastcross consorciada ou não com Arachis pintoi, com e sem nitrogênio, sob pastejo

    OpenAIRE

    Ribeiro, Ossival Lolato; Cecato, Ulysses; Rodrigues, Augusto Manoel; Faveri, Juliana Cantos; Jobim, Clóves Cabreira; Lugão, Simony Marta Bernardo

    2011-01-01

    p. 318-328 Objetivou-se neste trabalho avaliar a concentração de carboidrato não-estrutural e biomassa radicular em pastagens de grama Coastcross + Arachis pintoi; Coastcross + Arachis pintoi com 100kg/ha de nitrogênio (N); Coastcross + Arachis pintoi com 200kg/ha de N; e Coastcross com 200kg/ha de N, nos períodos de verão, outono e inverno. Utilizou-se delineamento experimental em blocos ao acaso com os tratamentos em esquema de parcelas subdivididas, com dua...

  10. Short-term outcome of fluoroscopic-guided steroid injection therapy of lumber facet cyst-induced radicular pain

    Energy Technology Data Exchange (ETDEWEB)

    Kwon, Mi Ri; Kwon, Jong Won; Lee, Jong Seo; Kim, Eu Sang [Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2015-04-15

    To determine the short-term effect of fluoroscopic-guided steroid injection therapy of lumbar facet cyst-induced radicular pain. Seventeen patients with radiculopathy due to lumbar synovial cysts, who were treated with fluoroscopically guided injection, were retrospectively evaluated. All plain radiographic images and MR images before the therapy were reviewed. Five patients underwent only the facet joint injection, whereas twelve patients underwent the facet joint injection with perineural injection therapy. The clinical course of pain was evaluated on the first follow-up after therapy. Effective pain relief was achieved in 11 (64.7%) of the 17 patients. Among 12 patients who underwent facet joint injection with perineural injection, 9 patients (75%) had an effective pain relief. Of 5 patients, 2 (40%) patients only took the facet joint injection and had an effective pain relief. Fluoroscopic-guided steroid injection therapy shows a good short-term effect in patients with symptomatic lumbar facet joint synovial cysts.

  11. T lymphocyte activation and cytokine expression in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Ihan Hren, N; Ihan, A

    2009-02-01

    Radicular cysts (RCs) are periapical lesions resulting in jaw bone destruction. The inflammatory dental periapical granuloma (PG) is considered to be the origin of RC formation; however the mechanism of RC development remains unclear. Cell suspension from the surgically extirpated tissue of 27 RCs and 25 PGs was obtained. Bacteriological analysis of the PG tissue samples was performed in order to define two major groups of PG according to the prevailing causative bacterial infection: the streptococcal PG (PG-S, n=10) and the anaerobe PG (PG-A, n=9) group. The inflammatory response of tissue infiltrating lymphocytes was assessed by following T lymphocyte activation (HLA-DR expression) as well as interferon gamma (IFN-gamma) and interleukin 4 (IL-4) production which were evaluated by the flow cytometry. In comparison to RC both types of PG contained a higher proportion of activated T cells (HLA-DR) and lower proportion of IL-4 producing cells. PG-A tissue contained increased percentage of CD3 cells and increased percentage of T helper 1 (Th1) cells in comparison with PG-S. In RC the IFN-gamma production is higher than in streptococcal PG-S but similar as in PG-A. Tissue infiltration by Th2 cells and IL-4 production is likely to play an etiopathogenic role in RC formation.

  12. Distribuição radicular de cultivares de aspargo em áreas irrigadas de Petrolina - PE Root distribution of asparagus cultivars in irrigated areas of Petrolina, Brazil

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    Luís Henrique Bassoi

    2001-03-01

    Full Text Available A distribuição radicular de duas cultivares de aspargo (New Jersey 220 e UC 157 F1, irrigadas por aspersão convencional, foi avaliada durante o ano de 1997 em solos de textura arenosa, em plantio experimental e comercial, respectivamente, nos Projetos de Irrigação de Bebedouro e Senador Nilo Coelho, em Petrolina (PE. O objetivo foi obter informações do sistema radicular do aspargo, empregando-se os métodos do monolito e do perfil de solo auxiliado pela análise de imagens digitais, para o manejo de solo e água nesse cultivo. Na área experimental, a maior parte da matéria seca, área e comprimento de raízes no perfil de solo e densidade de comprimento radicular foram encontradas até a profundidade de 0,4 m nas duas cultivares, enquanto que na comercial a maior parte da área e comprimento de raízes no perfil do solo estendeu-se até a profundidade de 0,6 m (cv. New Jersey 220. Nesses dois plantios, as raízes das cultivares atingiram a profundidade de 1 m. Na área experimental, a massa seca, a área e o comprimento no perfil de solo, e a densidade de comprimento radicular nas cultivares concentraram-se até a distância de 0,6 m à linha de plantas. No intervalo de diâmetro (d de raízes 2In 1997 the root distribution of two asparagus cultivars (New Jersey 220 and UC 157 F1 irrigated by sprinkler was evaluated in coarse textured soils in experimental and commercial areas at Petrolina county, in the semi-arid region of northeastern Brazil, to obtain useful information for soil and water management. Both the monolith and the soil profile aided by digital image analysis methods were used to evaluate it. In the experimental area, a greater concentration of root dry weight, root area and length in the soil profile and root length density were found up to 04 m depth for both cultivars, while in commercial area the root area and length of cv. New Jersey 220 were concentrated until 0,6 m depth. Roots reached 1 m depth in both areas. In

  13. ALELOPATIA DE Arctium minus BERNH (ASTERACEAE NA GERMINAÇÃO E CRESCIMENTO RADICULAR DE SORGO E PEPINO

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    Valdenir José Belinelo

    2008-01-01

    Full Text Available The objectives of this work were identified and characterize the allelopatic activity of extracts obtained from Arctium minus (Hill Bernh (Asteraceae. The fitotoxic activity of organic extracts (1 e 100 mg.L-1 and aqueous extract (5,00 e 0,05% m/v on the germination and radicular growth of the monocotyledon Sorghum bicolor L. (sorghum, and the dicotyledon Cucumis sativus L. (cucumber were evaluated. The results showed the presence of allelopatic activity variable in according to the extract concentration and with the target plant. The intensity of induced inhibitory effect was higher for the ethanolic extract in concentration of 100 mg.L-1 for Sorghum bicolor L. The results also indicates the existence of the potential use of Arctium minus (Hill Bernh ethanolic extract as a natural herbicide and open perspectives for the research of the constituent(s with higher allelopatic activity.

  14. [The expression and significance of RORγT in periapical granulomas and radicular cysts].

    Science.gov (United States)

    Lang, Xiao-ying; Li, Song

    2014-08-01

    To identify retinoic acid-related orphan nuclear receptor-γT (RORγT), the specific markers of T helper 17 (Th17) cells by immunohistochemical analysis to confirm the presence of Th17 cells in periapical lesions. Eighteen radicular cysts (RCs) and 22 periapical granulomas (PGs) were collected in the Department of Oral Pathology after periapical surgery as the experimental samples. Five alveolar bone samples were obtained from a group of impacted third molars recommended for extraction as the control samples. The protein expression of RORγT was measured by immunohistochemical analysis for all samples. In addition, the protein expression of IL-17 was measured at the same time. Statistical analysis was performed using SPSS 17.0 software package to evaluate the differences of expression of RORγT and IL-17 according to type of lesion (PG vs. RC vs. control group) and intensity of the inflammatory infiltration (mild vs. moderate vs. severe vs. control group). RORγT+ cells were detected in all periapical lesions tissues, and the expression of RORγT was significantly higher in periapical lesions than in normal tissues which had no expression of RORγT (Pperiapical lesions in comparison with normal control subjects, indicating that Th17 cells are more likely to exist in periapical lesions.

  15. Lead phytotoxicity on germination and early growth of lettuce as a function of root anatomy and cell cycle = Fitotoxicidade do chumbo na germinação e crescimento inicial de alface em função da anatomia radicular e ciclo celular

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    Marcio Paulo Pereira

    2013-04-01

    Full Text Available This work aimed to evaluate the phytotoxicity of five lead concentrations on germination, root anatomy and cell cycle of lettuce. Lettuce cypselae were placed in Petri dishes covered with filter paper and 2.5 mL of solution containing 0.0, 0.5, 1.0, 2.0 and 5.0 mM of Pb(NO32. Dishes were maintained in growth chamber B.O.D. type at 25ºC and photoperiod of 12 h, the following variables were evaluated: germination percentage, early growth, root anatomy, mitotic index and the rate of chromosomal abnormalities on root apical meristem. The seed germination and seedlings early growth were bothreduced proportionally to the increase in lead concentrations. The root anatomy showed decreases in apoplastic barriers andmodifications on the xylem related to the increase of hydraulic conductivity in the presence of lead. There were reductions inthe mitotic index and na increase in chromosomal abnormalities under the different lead concentrations. Therefore, the lettuceroot system were more affected by lead concentrations and the phytotoxicity symptoms are related to the reductions on mitoticindex on root apical meristem and anatomical modifications related to higher lead translocation to plant shoots.Objetivou-se com esse trabalho avaliar a fitotoxicidade de cinco concentrações de chumbo na germinação,anatomia radicular, e divisão celular de alface. Cipselas de alface foram colocadas em placas de Petri com papel de filtro e2,5 mL de solução contendo 0,0; 0,5; 1,0; 2,0 e 5,0 mM de Pb(NO32. As placas permaneceram em câmara do tipo B.O.D. a25°C com fotoperíodo de 12 h, sendo avaliadas as seguintes variáveis: germinação, crescimento inicial, anatomia radicular,índice mitótico e frequência de anormalidades cromossômicas no meristema apical radicular. O delineamento estatístico foiinteiramente casualizado com cinco tratamentos e quatro repetições. Os dados foram submetidos à análise de variância eregressão. A germinação das sementes e o

  16. Enucleación de quiste periapical simultáneo a la obturación del sistema de conductos radiculares

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    Lida Velazque

    Full Text Available Introducción: los quistes periapicales representan el tipo más frecuente dentro de los quistes odontogénicos. Su origen está relacionado con una necrosis pulpar y un consecuente estímulo de los restos epiteliales del ligamento periodontal (Malassez. Objetivo: describir un caso clínico de enucleación de quiste periapical simultáneo a la obturación del sistema de conductos radiculares. Presentación del caso: paciente de sexo femenino, 67 años de edad, sin alteraciones sistémicas; buscó atención odontológica por presentar dolor dental y acúmulo de alimentos en la región de molares inferiores del lado izquierdo. Al examen clínico se observó caries extensa en el segundo molar inferior izquierdo con compromiso de furca, ausencia de aumento de volumen vestibular, sin fistula; en la radiografía periapical se evidenció lesión cariosa extensa recidivante en el segundo molar inferior izquierdo, y primer molar inferior izquierdo con tratamiento endodóntico y presencia de área radiolúcida de contornos bien definidos en la región periapical compatible con quiste periapical. El tratamiento estuvo a cargo de un equipo multidisciplinario por lo que se decidió realizar exodoncia del segundo molar inferior izquierdo y cirugía paraendodóntica con enucleación quirúrgica simultánea a la obturación del sistema de conductos radiculares primer molar inferior izquierdo; el examen histopatológico de la muestra extraída comprobó tratarse de un quiste periapical. Se realizó seguimiento radiográfico dos años después y mostró un completo reparo óseo del área afectada. Conclusiones: se concluye que el tratamiento descrito constituye una alternativa válida para la resolución de casos donde la endodoncia convencional es limitada para mantener la función y estética de una pieza dentaria.

  17. Otite MÃdia e Externa Bilateral em CÃes. Estudo Comparativo do Perfil MicrobiolÃgico e Susceptibilidade a Antimicrobianos das EspecÃeis Prevalentes

    OpenAIRE

    Lis Christina de Oliveira

    2004-01-01

    A otite resulta da inflamaÃÃo do conduto auditivo e representa 8-15% dos casos na prÃtica veterinÃria. Com o objetivo de delinear e comparar o perfil de isolamento de microrganismos a partir dos ouvidos mÃdio e externo de cÃes com otite foi realizado este estudo. No perÃodo de agosto/2003 a marÃo/2004 foram analisados 64 cÃes com otite externa e mÃdia associados e 50 cÃes com conduto auditivo hÃgido. A coleta de amostras foi realizada no Centro de Controle de Zoonoses de Fortaleza-CE e a anÃl...

  18. Produção e caracterização radicular de alfafa (Medicago sativa L. Em função da calagem e gessagem

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    Fábio Yomei Tanamati

    2013-09-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE MicrosoftInternetExplorer4 A alfafa é uma forrageira leguminosa, herbácea perene de clima temperado bastante utilizada na criação de bovinos, equinos e caprinos e exigente em termos de fertilidade do solo. Diante disso objetivou-se quantificar o acúmulo de biomassas verde e seca e caracterizar e quantificar o sistema radicular da alfafa quando submetidas a diferentes níveis de saturação por bases do solo tendo como fonte o calcário e o gesso, para isso realizou-se um experimento a campo com delineamento experimental de blocos ao acaso com parcelas subdivididas, com quatro tratamentos e quatro repetições. Considerou-se as parcelas os tratamentos que foram calculados para atingir a saturação por bases do solo a V=80%, sendo T1- 80% gesso, T2- 80% calcário, T3- 40% calcário + 40% gesso e T4- 80% calcário + 80% gesso, e as subparcelas, três épocas de amostragem, com intervalos de 30 dias. A partir dos resultados concluiu-se que a gessagem e a calagem devem ser analisadas segundo caráter econômico, já que maiores doses não implicam em maiores acúmulos de biomassas verde e seca, que a calagem e a gessagem no solo interferem no crescimento e morfologia radicular da alfafa, a qual apresenta crescimento secundário normal.

  19. Effect of surface treatments on the flexural properties and adhesion of glass fiber-reinforced composite post to self-adhesive luting agent and radicular dentin.

    Science.gov (United States)

    Elnaghy, Amr M; Elsaka, Shaymaa E

    2016-01-01

    This study evaluated the effect of different surface treatments on the flexural properties and adhesion of glass fiber post to self-adhesive luting agent and radicular dentin. Seventy-five single-rooted human teeth were prepared to receive a glass fiber post (Reblida). The posts were divided into five groups according to the surface treatment: Gr C (control; no treatment), Gr S (silanization for 60 s), Gr AP (airborne-particle abrasion), Gr HF (etching with 9 % hydrofluoric acid for 1 min), and Gr M10 (etching with CH2Cl2 for 10 min). Dual-cure self-adhesive luting agent (Rely X Unicem) was applied to each group for testing the adhesion using micropush-out test. Failure types were examined with stereomicroscope and surface morphology of the posts was characterized using a scanning electron microscopy (SEM). Flexural properties of posts were assessed using a three-point bending test. Data were analyzed using ANOVA and Tukey's HSD test. Statistical significance was set at the 0.05 probability level. Groups treated with M10 showed significantly higher bond strength than those obtained with other surface treatments (P C > S > AP > HF. Most failure modes were adhesive type of failures between dentin and luting agent (48.2%). SEM analysis revealed that the fiber post surfaces were modified after surface treatments. The surface treatments did not compromise the flexural properties of fiber posts. Application of M10 to the fiber post surfaces enhanced the adhesion to self-adhesive luting agent and radicular dentin.

  20. ACÚMULO DE MASSA SECA E DINÂMICA DO SISTEMA RADICULAR DO ESTILOSANTE MINEIRÃO SUBMETIDO A DUAS INTENSIDADES DE DESFOLHAÇÃO

    Directory of Open Access Journals (Sweden)

    Allan Kardec Braga Ramos

    2006-10-01

    Full Text Available Este trabalho objetivou avaliar os efeitos de duas intensidades de desfolhação (15 e 30 cm sobre a produção de MS, resíduo, área foliar residual (AFR, capacidade de rebrota no escuro (CRE e dinâmica do sistema radicular do estilosante Mineirão (Stylosanthes guianensis cv.Mineirão. As desfolhações foram realizadas de outubro de 2000 a setembro de 2001. O intervalo de cortes foi de 64+ 7 e 82 + 4 dias nas épocas chuvosa e seca do ano, respectivamente. Após análises estatísticas, as médias foram comparadas pelo teste de Tukey (10%. O acúmulo de MS foi afetado pela interação altura x época de desfolhação. No corte a 15 cm, o acúmulo de folhas não diferiu de novembro a abril, mas declinou de 1.700 kg/ha no mês de abril para 317kg/ha no mês de setembro. No resíduo, houve aumento da MS total e da AFR até fevereiro, em ambas as alturas de corte. A densidade das raízes finas (< 2 mm de diâmetro diminuiu na época seca. A CRE foi menor no mês de fevereiro. O corte na altura de 15 cm proporcionou maiores produções de MS de folhas sem afetar o resíduo e o sistema radicular das plantas do estilosantes Mineirão. PALAVRAS-CHAVE: Área foliar, forragem, resíduo, raízes, Stylosanthes guianensis.

  1. Densidade radicular de progênies de pupunheira em função de adubação NPK Root density of pejibaye progenies as a function of NPK fertilization

    Directory of Open Access Journals (Sweden)

    Marilene L. A. Bovi

    1999-11-01

    Full Text Available O uso eficiente de fertilizantes requer o conhecimento de seus efeitos tanto na biomassa aérea quanto na radicular, permitindo que se identifique uma adubação adequada do ponto de vista de uma melhor partição entre ambas. A massa de raízes secas por volume de solo vem sendo utilizada, principalmente em espécies perenes, como subsídio para estimativas de biomassa radicular. Com esse objetivo, foram estudados os efeitos da adubação NPK na densidade radicular de três progênies de pupunheira (Bactris gasipaes Kunth, cultivadas em um Aluvial álico (corrigido por meio de calagem em Ubatuba, SP (clima "Cfa", durante o ano de 1993. O delineamento foi um fatorial fracionado, composto por quatro doses crescentes de nitrogênio (0 a 400 kg/ha/ano de N, fósforo (0 a 200 kg/ha/ano de P2O5 e potássio (0 a 200 kg/ha/ano de K2O, em experimento integrado (progênies e adubação. As amostras foram coletadas por ocasião da primeira colheita de palmito (outubro de 1993, quando as plantas (cultivadas no espaçamento de 2 x 1 m tinham cerca de dois anos de campo. Utilizou-se o método do trado, coletando-se, por parcela experimental, duas amostras na linha e duas na entrelinha. Houve diferenças entre genótipos (GE, com as progênies 2 e 3 apresentando, em média, maior densidade radicular que a progênie 1 (5,15 e 6,20 contra 2,61 g/dm³, respectivamente. A interação GE x PO (posição da amostra foi significativa, sendo que para as progênies 1 e 2 a maior densidade radicular foi obtida na linha (3,30 e 6,60 g/dm³ na linha, contra 1,92 e 4,70 g/dm³ na entrelinha, respectivamente, enquanto para a 3 a ordem foi inversa (5,57 g/dm³ na linha e 6,84 g/dm³ na entrelinha. Doses crescentes de potássio (K apresentaram efeitos lineares positivos e significativos (R² =0,93 a 0,97 na densidade radicular das três progênies, com acréscimos entre dose mínima e máxima variando de 18 a 28%. Não houve efeito significativo isolado de P, enquanto doses

  2. Crescimento radicular e aéreo de cultivares de arroz de terras altas em função da calagem Root and shoot growth of upland rice cultivars as affected by lime application

    Directory of Open Access Journals (Sweden)

    Carlos Alexandre Costa Crusciol

    2012-01-01

    Full Text Available O presente trabalho teve como objetivo avaliar o crescimento radicular e da parte aérea, além da eficiência de absorção de nutrientes pelas cultivares de arroz Caiapó e Maravilha, em função da calagem. O experimento foi desenvolvido em casa de vegetação, sendo os tratamentos constituídos pelas cultivares Caiapó e Maravilha combinadas com os índices de saturação por bases (V% de 10, 40 e 70. O delineamento experimental utilizado foi inteiramente casualizado, com quatro repetições. Foram avaliados o número de perfilhos, comprimento radicular, matéria seca de raízes, folhas e colmos, o teor foliar e a eficiência de absorção dos macronutrientes. De forma geral, observou-se que a cultivar moderna superou a tradicional em matéria seca de raízes, comprimento radicular, número de colmos, matéria seca de colmos e da parte aérea, além de acumular mais nutrientes a cultivar tradicional, mesmo nas condições de maior acidez. No entanto, os teores de nutrientes foram maiores na cultivar Caiapó. A cultivar Maravilha possui maior crescimento radicular e da parte aérea, nos diversos níveis de acidez, enquanto a Caiapó tem maior eficiência de absorção dos nutrientes do solo. A V% de 40 é a mais efetiva para ambas as cultivares.This work aimed to evaluate root growth, shoot development and nutrient absorption efficiency by rice cultivars Caiapó and Maravilha as affected by lime application. The experiment was carried out in a greenhouse, with treatments set up by Caiapó and Maravilha cultivars in combination with the base saturation (V% of 10%, 40% and 70%. The experiment was in a randomized complete block design, with four replications. The number of tillers, root length, root dry matter, leaves and stems, leaf content and macronutrients absorption efficiency were evaluated. Comparing cultivars, Maravilha cultivar presented higher root dry weight, root length, number of stems, dry matter of stems and shoot than Caiap

  3. Comparison of the efficacy of transforaminal and interlaminar radicular block techniques for treating lumbar disk hernia

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    Rodrigo Rezende

    2015-04-01

    Full Text Available OBJECTIVE: To compare the interlaminar and transforaminal block techniques with regard to the state of pain and presence or absence of complications.METHOD: This was a randomized double-blind prospective study of descriptive and comparative nature, on 40 patients of both sexes who presented lumbar sciatic pain due to central-lateral or foraminal disk hernias. The patients had failed to respond to 20 physiotherapy sessions, but did not present instability, as diagnosed in dynamic radiographic examinations. The type of block to be used was determined by means of a draw: transforaminal (group 1; 20 patients or interlaminar (group 2; 20 patients.RESULTS: Forty patients were evaluated (17 males, with a mean age of 49 years. There was a significant improvement in the state of pain in all patients who underwent radicular block using both techniques, although the transforaminal technique presented better results than the interlaminar technique.CONCLUSION: Both techniques were effective for pain relief and presented low complication rates, but the transforaminal technique was more effective than the interlaminar technique.

  4. Prevalência de cárie radicular e condição periodontal em uma população idosa institucionalizada de Piracicaba - SP Prevalence of root caries and periodontal conditions in an elderly institutionalized population from Piracicaba - SP

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    Marcelo de Castro MENEGHIM

    2002-03-01

    Full Text Available A evolução dos procedimentos preventivos e curativos em Odontologia, verificados nas duas últimas décadas, levou a uma maior longevidade dos elementos dentários, acarretando com isso, uma maior demanda por tratamento periodontal e, em especial, cárie radicular no paciente idoso. O presente estudo teve como objetivo verificar as condições periodontais e lesões radiculares, de uma amostra de população institucionalizada do município de Piracicaba - SP. Nesse estudo, foram examinados 151 idosos com idade entre 54 e 93 anos. Os sextantes foram examinados e classificados do ponto de vista de saúde periodontal, necessidade de tratamento periodontal, presença de retração gengival e lesões radiculares, utilizando-se como critérios os indicadores da OMS (1999. Comparando-se duas faixas etárias: de pacientes com idade entre 50 e 75 anos e pacientes com idade acima de 75 anos, constatou-se que há um aumento na prevalência de lesões de cárie e outras afecções radiculares, como erosão e abrasão, indicando aumento na susceptibilidade a tais lesões com o passar da idade.Preventive and invasive dental procedures have improved in the last two decades, leading to a greater longevity of teeth. As a result, teeth are more susceptible to periodontal diseases and, consequently, to root caries. The purpose of this study was to verify the prevalence of both periodontal diseases and root caries in an institutionalized population from Piracicaba - SP, Brazil. In this study, 151 subjects, aging 54 to 93 years, were examined. The sample was divided into two groups: a group of subjects aging 50 to 75 years and a group of subjects over 75 years old. The sextants were examined and classified as to periodontal health, periodontal treatment needs, prevalence of gingival recession and root lesions. In conclusion, a high prevalence of root caries was verified. That indicates an increase in the susceptibility to these lesions, which is associated with

  5. Review of the United States Army Wholesomeness of Irradiated Food Program (1955-1966); Apercu du Programme d'Etudes de l'Armee des Etats Unis sur la Comestibilite des Produits Alimentaires Irradies (1955-1966); Obzor programmy Amerikanskoj armii po voprosu sokhraneniya vkusovykh i pitatel'nykh'kachestv obluchennykh pishchevykh produktov (1955-1966); Programa del Ejercito de Los Estados Unidos Relativo a la Comestibilidad de los Alimentos Irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Raica, N. Jr. [United States Army Medical Research And Nutrition Laboratory, Fitzsimons General Hospital, Denver, CO (United States); Howie, D. L. [United States Army Medical Research and Development Command, Office of the Surgeon General, Washington, DC (United States)

    1966-11-15

    se exponen algunos datos relativos a la cuestion de la comestibilidad de los alimentos irradiados (seguridad desde el punto de vista de la toxicidad, de la nutricion y en parte, de la microbiologia). Concluidos ya los prolongados estudios sobre el consumo de esos alimentos por animales, se ha demostrado que los alimentos irradiados son tan comestibles y, en general, tan aceptables como los tratados por procedimientos clasicos. Los datos se han obtenido gracias a la colaboracion de mas de 30 laboratorios de instituciones docentes, empresas comerciales y organismos oficiales, y comprenden los resultados de estudios sobre el consumo de 21 productos alimenticios irradiados (carne; prescado, frutas y verduras) por mas de 15 000 ratones, 5000 ratas de la misma progenie, 300 perros y 37-monos. En general, los alimentos utilizados para esos estudios recibieron dosis de 2,79 a 5, 58 Mrad obtenidas por medio de combustible agotado, cobalto-60 o fuentes de.electrones de 10 MeV; antes de darlos a los animales se almacenaron durante ues meses; como minimo, a la- temperatura ambiente. Los alimentos no irradiados utilizados como testigo se mantuvieron congelados hasta el momento de su consumo. Durante dos anos se administraron dietas con el 35% (en peso seco) de alimentos irradiados, a dos especies diferentes. Se estudio el crecimiento, la reproduccion, la lactacion, la hematologia, la longevidad, la histopatologfa y la carcinogenesis. Para examinar mas a fondo este ultimo punto, durante dos anos se administraron a ratones dietas con el 100% de alimentos irradiados. Tambien se estudio la radiactividad inducida, la estabilidad y suficiencia de las sustancias nutritivas, la concentracion de enzimas en los tejidos, la digestibilidad, la riqueza en vitamina K y las alteraciones quimicas. Durante periodos de dos semanas se administraron a seres humanos 54 alimentos irradiados diferentes (9,3 krad - 3,7 Mrad) en dietas cuyos componentes portadores de calorias estaban irradiados en la

  6. Calagem na nutrição de cálcio e no desenvolvimento do sistema radicular da goiabeira Effect of the liming on the nutrition and the development of the guava root system

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    Renato de Mello Prado

    2004-10-01

    Full Text Available A aplicação de calcário em solos ácidos promove maior desenvolvimento do sistema radicular das plantas e consequentemente, melhora a absorção de água e nutrientes. O objetivo deste trabalho foi avaliar os efeitos da aplicação de calcário no solo, no desenvolvimento do sistema radicular e na nutrição de cálcio de goiabeiras cultivadas em um Latossolo Vermelho distrófico ácido. Analisaram-se amostras de solo coletadas em quatro pontos eqüidistantes, a 75 cm do tronco, nas camadas de 0-20 e 20-40 cm de profundidade, de parcelas que receberam 0, 3,7 e 7,4 t ha-1 de calcário. O calcário foi aplicado em pré-plantio, incorporado com arado de aivecas e grade aradora, na camada de 0-30 cm de profundidade. Durante o segundo e o terceiro ano de cultivo da goiabeira, avaliaram-se os efeitos da calagem nas propriedades químicas do solo. Aos 42 meses após a incorporação do calcário (terceiro ano de cultivo da goiabeira, realizou-se a amostragem das raízes com trado cilíndrico serrilhado para a avaliação da matéria seca e do teor de cálcio radicular e e também realizou-se a amostragem de folhas. A calagem promoveu a correção da acidez do solo, aumentando a saturação por bases, com conseqüente incremento da disponibilidade e absorção de cálcio pela planta, proporcionando maior desenvolvimento do sistema radicular da goiabeira. Concentrações de cálcio próximas de 30 mmol c dm-3 no solo e teor desse nutriente de 7,5 g kg-1 nas raízes, estiveram associados ao maior crescimento radicular da goiabeira.The application of lime in acid soils improves the plant root system and, consequently, enhances water and nutrients absorption by the plants. The objective of this work was to evaluate the effects of lime application on the development of root system and calcium nutrition of guava plants cultivated in an acid distrofic Red Latosol (Typic Hapludox. Soil samples were collected in four equidistant points, at 75 cm of the trunk

  7. Avaliação da suscetibilidade antimicrobiana de bactérias anaeróbias facultativas isoladas de canais radiculares de dentes com insucesso endodôntico frente aos antibióticos de uso sistêmico

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    Bárbara Trindade Di Santi

    Full Text Available ResumoIntroduçãoBactérias associadas ao insucesso do tratamento endodôntico são capazes de adquirir e expressar resistência aos agentes antimicrobianos comumente empregados para tratar infecções, o que torna necessário, em determinadas situações, a realização de testes laboratoriais para detectar a resistência ou a suscetibilidade antimicrobiana desses micro-organismos.Objetivoavaliar a suscetibilidade antimicrobiana das cepas de Enterococcus faecalis, Enterococcus faecium, Actinomyces viscosus e Staphylococcus aureus isoladas de canais radiculares de dentes com insucesso endodôntico.Material e métodoCepas clínicas de Enterococcus faecalis (n=3, Enterococcus faecium (n=3, Actinomyces viscosus (n=3 e Staphylococcus aureus (n=3, coletadas in vivo de canais radiculares com insucesso endodôntico, foram testadas quanto à suscetibilidade antimicrobiana por meio do método E-test em duplicata, utilizando os antibióticos: Amoxicilina (AC, Rifampicina (RI, Moxifloxacina (MX, Vancomicina (VA, Tetraciclina (TC, Ciprofloxacina (CI, Cloranfenicol (CL, Benzilpenicilina (PG, Amoxicilina + ácido clavulânico (XL, Doxiciclina (DC, Eritromicina (EM e Azitromicina (AZ.ResultadoTodas as cepas clínicas testadas foram suscetíveis aos antibióticos AC, XL, PG, DC, MX, TC e VA. Todos os isolados das espécies de S. aureus foram suscetíveis aos 12 antibióticos testados. As cepas de E. faecalis, E. faecium e A. viscosus mostraram padrão de suscetibilidade intermediário contra EM. Algumas cepas de E. faecalis e E. faecium foram resistentes a AZ e RI.ConclusãoAs cepas clínicas isoladas dos canais radiculares de dentes com insucesso endodôntico mostraram perfis diferentes de suscetibilidade antimicrobiana e nenhum isolado de E. faecalis e E. faeciumapresentou-se suscetível a AZ e EM.

  8. Distribuição de massa molecular de ácidos húmicos e promoção do crescimento radicular Molecular weight distribution of humic acids and root growth promotion

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    Natália de Oliveira Aguiar

    2009-12-01

    Full Text Available Os ácidos húmicos (AH estimulam diretamente vários processos fisiológicos que promovem o crescimento vegetal, especialmente do sistema radicular. O conhecimento da natureza química e do papel de AH na expressão de efeitos biofertilizantes e bioestimulantes é fundamental para o desenvolvimento de insumos biológicos à base de ácidos húmicos. O objetivo deste trabalho foi avaliar uma possível relação entre a distribuição de massa molecular aparente de AH isolados de vermicomposto e a magnitude de resposta na promoção do crescimento radicular. Para isso, foram obtidas subfrações (SF dos AH por meio de cromatografia preparativa por exclusão de tamanho em gel de Sephadex G-50 (CGE. O processo preparativo foi validado pelo uso da cromatografia líquida de alta performance por exclusão de tamanho (HPSEC. As cinco frações obtidas foram testadas em diferentes concentrações (0; 0,0001; 0,001; 0,003; 0,005; e 0,01 mol L-1 de C quanto à sua capacidade de estimular o crescimento radicular de plantas de Arabidopsis thaliana (ecótipo col. 4. Para plantas de milho (Zea mays hyb. UENF 506-6 foi utilizada a dose de 0,002 mol L-1 de C. O modelo quadrático descreveu a indução do crescimento radicular de Arabidopsis e a dose de AH, sendo 0,00511 mol L-1 de C o ponto de inflexão médio. Na concentração ótima, foi observada correlação inversa e significativa entre distribuição de massa molecular e indução do número de raízes laterais em Arabidopsis. No entanto, outros atributos, como área e comprimento radicular, não sofreram influência da massa molecular aparente. Em plântulas de milho, foi observado aumento no número de sítios de mitose e raízes laterais tanto no tratamento com AH como com suas subfrações. A atividade da H+-ATPase de membrana plasmática foi significativamente alterada pelo AH, porém não ocorreu o mesmo com todas as subfrações. A atividade de estimulação do crescimento radicular parece estar

  9. Controle biológico da podridão radicular (Pythium aphanidermatum e promoção de crescimento por Pseudomonas chlororaphis 63-28 e Bacillus subtilis GB03 em alface hidropônica

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    Élida Barbosa Corrêa

    2010-12-01

    Full Text Available Podridões radiculares causadas por espécies de Pythium são um importante problema em cultivos hidropônicos. Sintomas de subdesenvolvimento são observados nas plantas parasitadas pelo patógeno, sendo muitas vezes não diagnosticados pelo produtor. O objetivo do trabalho foi avaliar o controle biológico da podridão radicular causada por Pythium aphanidermatum e a promoção de crescimento por Pseudomonas chlororaphis 63-28 e Bacillus subtilis GB03, reconhecidos agentes de controle biológico de doenças de plantas. A inoculação das plantas com P. aphanidermatum ocasionou o subdesenvolvimento, sendo essa diminuição de 20%. A adição dos agentes de biocontrole na solução nutritiva teve um efeito positivo no aumento da massa (6% a 13%, no número de folhas (4% a 7% e no teor de clorofila (3% das plantas de alface. Entretanto, maiores estudos devem ser realizados para melhorar a capacidade de controle da doença e de promoção de crescimento pelos agentes de biocontrole estudados no cultivo de alface hidropônica.

  10. Evaluation of two protocols for low-level laser application in patients submitted to orthodontic treatment

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    Mariana Marquezan

    2013-02-01

    ção e a data de eutanásia (3º ou 8º dia de experimento. Ao final dos períodos experimentais, foram realizadas mensurações da movimentação dentária, análise qualitativa das reações celulares e teciduais do periodonto e contagem de vasos sanguíneos no ligamento periodontal. RESULTADOS: a quantidade de movimentação não diferiu entre os grupos num mesmo tempo experimental (p < 0,05. A análise qualitativa revelou maior atividade absortiva nos grupos irradiados ao final de 7 dias, especialmente quando as irradiações foram diárias. Nos grupos irradiados diariamente, a contagem de vasos foi aumentada em relação aos animais isentos de dispositivo ortodôntico e de aplicações de LBP (p < 0,05. CONCLUSÃO: apesar de verificada angiogênese em certos grupos irradiados, os protocolos de irradiação testados não foram capazes de acelerar a movimentação dentária, e foi possível verificarem-se absorções radiculares.

  11. Avaliação da reabsorção radicular após a movimentação ortodôntica em dentes tratados endodonticamente = Evaluation of root resorption after orthodontic treatment in endodontically treated teeth

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    Kreia, Tatiana Banzatto

    2005-01-01

    Full Text Available O presente estudo teve como objetivo avaliar quantitativamente o grau de reabsorção radicular em dentes com tratamento endodôntico (Grupo 1 e dentes com vitalidade (Grupo 2, antes e após o tratamento ortodôntico. A amostra foi composta de 20 indivíduos, dos gêneros masculino e feminino. O critério de seleção foi a presença de um incisivo superior com tratamento endodôntico prévio ao tratamento ortodôntico e o seu correspondente homólogo, com vitalidade para controle e parâmetro de comparação. As medições foram realizadas em radiografias periapicais e modelos de estudo em gesso obtidos antes e após o tratamento ortodôntico corretivo, por um único operador, com um paquímetro digital e auxílio de uma lupa. Mediu-se na radiografia, o comprimento total (da borda incisal até o ápice radicular e a altura da coroa do dente tratado endodonticamente e do correspondente com vitalidade. Seguiu-se a medição da altura da coroa (da borda incisal até a margem gengival de ambos os dentes nos modelos em gesso e aplicou-se regra de três baseada no método de Huckaba (1964, para se obter o comprimento real dos dentes. Os resultados demonstraram que, apesar do grupo 1 ter apresentado um grau de reabsorção menor que o grupo 2 ao final do tratamento ortodôntico, essa diferença não foi estatisticamente significante (p = 0. 05. Concluiu-se que os dentes com tratamento endodôntico apresentaram menor grau de reabsorção radicular ao final do tratamento ortodôntico

  12. Diagnostic utility of selective nerve root blocks in the diagnosis of lumbosacral radicular pain: systematic review and update of current evidence.

    Science.gov (United States)

    Datta, Sukdeb; Manchikanti, Laxmaiah; Falco, Frank J E; Calodney, Aaron K; Atluri, Sairam; Benyamin, Ramsin M; Buenaventura, Ricardo M; Cohen, Steven P

    2013-04-01

      Lumbosacral selective nerve root blocks and/ or transforaminal epidural injections are used for diagnosis and treatment of different disorders causing low back and lower extremity pain. A clear consensus on the use of selective nerve root injections as a diagnostic tool does not currently exist. Additionally, the validity of this procedure as a diagnostic tool is not clear. To evaluate and update the accuracy of selective nerve root injections in diagnosing lumbar spinal disorders. A systematic review of selective nerve root blocks for the diagnosis of low back and lower extremity pain. Methodological quality assessment of included studies was performed using the Quality Appraisal of Reliability Studies (QAREL) checklist. Only diagnostic accuracy studies meeting at least 50% of the designated inclusion criteria were utilized for analysis. Studies scoring less than 50% are presented descriptively and analyzed critically. The level of evidence was classified as good, fair, or limited or poor based on the quality of evidence grading scale developed by the United States Preventive Services Task Force (USPSTF). Data sources included relevant literature identified through searches of PubMed and EMBASE from 1966 to September 2012, and manual searches of the bibliographies of known primary and review articles. In this review, we evaluated studies in which controlled local anesthetic blocks were performed using at least 50% pain relief as the reference standard. There is limited evidence for the accuracy of selective nerve root injections as a diagnostic tool for lumbosacral disorders. There is limited evidence for their use in the preoperative evaluation of patients with negative or inconclusive imaging studies. The limitations of this systematic review include a paucity of literature, variations in technique, and variable criterion standards for the diagnosis of lumbar radicular pain. There is limited evidence for selective nerve root injections as a diagnostic tool in

  13. Remoção da smear layer dos canais radiculares em função das técnicas de instrumentação e irrigação endodônticas = Remoción del barrillo dentinario en los conductos radiculares en función de las técnicas de instrumentación e irrigación endodóncicas

    OpenAIRE

    Coelho da Silva, Fausto Miguel Tadeu

    2012-01-01

    1 - Introducción El concepto de tratamiento endodóncico se basa en la instrumentación, limpieza, desinfección y obturación de los conductos radiculares. Con el fin de mejorar estos aspectos, algunos investigadores crearon nuevos planteamientos, técnicas e instrumentos, logrando un gran progreso para la Endodoncia. Ésta, como toda ciencia, tuvo una gran evolución en el siglo pasado y consiguió tener un elevado grado de desarrollo, no solo en sus bases biológicas sino también en el desarro...

  14. INTERAÇÃO DO CALCÁRIO E DO SILICATO DE CÁLCIO E MAGNÉSIO COM GESSO AGRÍCOLA NO DESENVOLVIMENTO RADICULAR DE Panicum maximum JACQ. CV. CAPIM MOMBAÇA

    Directory of Open Access Journals (Sweden)

    Vinícius Faúla Aguiar

    2017-01-01

    Full Text Available O objetivo do trabalho é avaliar o efeito das correções do solo efetuadas com calcário e silicato de cálcio e magnésio no desenvolvimento radicular de Panicum maximum Jacq. Cultivar capim Mombaça. Foi adotado delineamento experimental em blocos ao acaso, em esquema fatorial 2x5, sendo estudado em quatro blocos o efeito de duas fontes de corretivo e cinco métodos de aplicação, além da testemunha. Nas análises onde foi observada significância estatística, realizou-se teste de Tukey a 5,0% de probabilidade. A unidade experimental é constituída por colunas de tubos de PVC de 15 centímetros de diâmetro por 60 cm de altura, dividida em seis anéis de 10 centímetros, totalizando 44 unidades. Depois de secas em estufa com circulação forçada de ar a 65 ºC até atingir peso constante as raízes foram pesadas em balança de precisão. O T2 resultou em maior incremento de massa seca. O crescimento radicular na faixa de 0 a 20 cm se mostrou superior às faixas de 20 a 40 e 40 a 60 cm.

  15. Raillietia caprae (Acari: Raillietidae and Psoroptes ovis (Acari: Psoroptidae in the ears of goats in the state of Rio de Janeiro, Southeast Brazil Raillietia caprae (Acari: Raillietidae e Psoroptes ovis (Acari: Psoroptidae nos condutos auditivos de caprinos no Estado do Rio de Janeiro, Brasil

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    João Luiz H. Faccini

    2008-03-01

    Full Text Available Ear cannals of 145 domestic goats including the breeds Saanen, Toggenburg, Anglobian, Alpine, Moxoto (native and crossbred goats from 10 smallholder farms were examined by flushing for the presence of ear mites. Prevalence of Raillietia caprae Quintero, Bassols and Acevedo, 1980 was much more higher than Psoroptes ovis (Hering, 1838 in the studied area, respectively 62% ( 90/145 and 4% ( 6/145. The youngest animal parasitized was eight months old and the oldest was 10 years old. Subclinical otitis is a common feature of infestation by both species but increase of wax and the presence of pus were detected in the flushed material in approximately 10% of the goats examined.Os condutos auditivos de 145 caprinos das raças Saanen, Toggenburg, Anglobian, Alpine, Moxoto (native e mestiços provenientes de 10 pequenos criadores foram examinados pela técnica de lavagem para diagnosticar a infestação por ácaros. A prevalência de Raillietia caprae Quintero, Bassols and Acevedo, 1980 foi muito mais alta do que Psoroptes ovis (Hering, 1838 - 62% (90/145 e 4% (6/145, respectivamente. O animal parasitado mais jovem tinha oito meses de idade e o mais velho 10 anos. Otite subclínica é comum nas infestações por ambas espécies mas aumento de cerume e presença de pus foram diagnosticados no material da lavagem em aproximadamente 10% dos caprinos examinados.

  16. Economic optimization method to design telescope irrigation of multiples outlets Otimização econômica de condutos telescópicos com múltiplas saídas

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    Marinaldo F. Pinto

    2012-08-01

    Full Text Available In this study is presented an economic optimization method to design telescope irrigation laterals (multidiameter with regular spaced outlets. The proposed analytical hydraulic solution was validated by means of a pipeline composed of three different diameters. The minimum acquisition cost of the telescope pipeline was determined by an ideal arrangement of lengths and respective diameters for each one of the three segments. The mathematical optimization method based on the Lagrange multipliers provides a strategy for finding the maximum or minimum of a function subject to certain constraints. In this case, the objective function describes the acquisition cost of pipes, and the constraints are determined from hydraulic parameters as length of irrigation laterals and total head loss permitted. The developed analytical solution provides the ideal combination of each pipe segment length and respective diameter, resulting in a decreased of the acquisition cost.O presente trabalho teve como objetivo desenvolver um procedimento de cálculo para otimização econômica, aplicado ao dimensionamento de linhas laterais de irrigação telescópicas com múltiplas saídas. A metodologia proposta pode ser empregada para a associação de condutos em série, sendo válida para o dimensionamento de trechos de tubulação com três diferentes diâmetros. Determinando-se a combinação ideal de comprimentos e respectivos diâmetros de cada trecho, obtém-se o resultado de mínimo custo na aquisição de tubulação. Para tal, utilizou-se a técnica dos multiplicadores de Lagrange, submetendo a função de custo às restrições do sistema, cujas variáveis de decisão são o comprimento da tubulação e a perda de carga total ao longo do percurso de escoamento. A técnica dos multiplicadores de Lagrange mostrou-se adequada para a otimização econômica do sistema em questão, quando comparada ao método-padrão de minimização de custos via função objetivo e

  17. Immunohistochemical analysis of FoxP3+ cells in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Peixoto, Raniel Fernandes; Pereira, Joabe dos Santos; Nonaka, Cassiano Francisco Weege; Silveira, Ericka Janine Dantas da; Miguel, Márcia Cristina da Costa

    2012-09-01

    To compare the number of FoxP3(+) cells between periapical granulomas (PGs) and radicular cysts (RCs), and to correlate this number with the intensity of the inflammatory infiltrate in these lesions and with epithelial thickness of RCs. Thirty PGs and 30 RCs were submitted to immunohistochemical analysis using an anti-FoxP3 polyclonal antibody. FoxP3(+) cells were counted under a light microscope (×400 magnification) in five fields and the mean value was calculated for each specimen. Statistical tests were used to evaluate differences in the number of FoxP3(+) cells according to type of lesion (PG vs. RC), intensity of the inflammatory infiltrate (grade I/II vs. grade III), and epithelial thickness of RCs (atrophic vs. hyperplastic). FoxP3(+) cells were detected in most PGs (93.3%) and RCs (93.3%). The median number of FoxP3(+) cells was 2.40 in PGs and 1.00 in RCs, with this difference being statistically significant (P=0.005). No significant differences in the number of FoxP3(+) cells were observed in terms of the intensity of the inflammatory infiltrate (P=0.465) or epithelial thickness of RCs (P=0.737). The present results suggest a greater participation of regulatory T cells in the modulation of the inflammatory response in PGs. In addition, the presence of a less effective regulatory environment in RCs, together with the high levels of inflammatory mediators as reported in the literature, may contribute to the greater growth potential of these lesions. Copyright © 2012 Elsevier Ltd. All rights reserved.

  18. Schistosoma mansoni: evolução de vermes oriundos de cercárias irradiadas a nível de sistema porta, no camundongo

    Directory of Open Access Journals (Sweden)

    Gileno de Sá Cardoso

    1989-12-01

    Full Text Available Oito grupos de camundongos albinos (Mus musculus, não isogênicos, foram infectados transcutaneamente com cerca de 450 cercárias (das cepas LE e SJ do S. mansoni, irradiadas com 3 Krad, 20 Krad e 40 Krad de radiação gama proveniente de cobalto-60, e não irradiados (grupos-controle. Os vermes provenientes de cercárias irradiadas com 20 e 40 Krad só foram encontrados em quantidades insignificantes no sistema porta. Verificou-se que os vermes irradiados com 3 Krad, que alcançom o sistema porta, mostram nítido retardo no desenvolvimento evolutivo quando comparados com os grupos-controles não irradiados. Os vermes da cepa SJ (irradiados ou não têm evolução mais lenta do que os da cepa LE.Eight groups of outbred albino mice were infected transcutaneously with cercariae of S. mansoni (strains LE and SJ irradiated with either 3, 20 or 40Krad, of gamma radiation from a cobalt-60 bomb and a control non irradiated group. Cercariae irradiated with 20 or 40 Kradfailed to develop in the portal system and3 Krad retarded development. Worms of the SJ strain developed more slowlt than the LE strain.

  19. Evaluation of three rootstocks root system for acid lime ‘tahiti’ at Piauí state/ Sistema radicular de três porta-enxertos para lima ácida ‘tahiti’ no estado do Piauí

    Directory of Open Access Journals (Sweden)

    Adeodato Ari Cavalcante Salviano

    2007-10-01

    Full Text Available The objective of this work was to evaluate the development of the root system of three rootstocks for ‘Tahiti’acid lime [Citrus latifolia (Yu.Tanaka Tanaka]: Rangpur lime (C. limonia Osbeck; Swingle citrumelo [Poncirus trifoliata (L. Raf. x C. paradisi Macf.]; Flying Dragon trifoliate (P. trifoliata (L. Raf.var. (FD – in the soil and environment conditions of the county of José de Freitas, Piauí, located on 04º 52' latitude S and 42º 42' longitude W and 110 m of altitude, in Aw climate. It was used the trench method. A wooden frame divided into 0.1 x 0.2 m parts was fixed in the soil profile and a digital photograph was taken from each part. These photographs were analyzed by software SIARCS 3.0 for sizing of the root system and the data gotten, submitted to the analysis of variance with Tukey test at the level of 5% of probability. The experimental design was entirely randomized, with three treatments (rootstocks and four replications (trenches. The root systems of the rootstocks had 90% of concentration until the depth of 0,4 m, and it was observed that 60% of the roots were concentrated in the first 0,2 m. The root system of the Rangpur lime demonstrated to be superior, in lenght (cm.200 cm-² to the Flying Dragon trifoliate and Swingle citrumelo root systems.O objetivo deste trabalho foi avaliar o desenvolvimento radicular de três porta-enxertos para lima ácida ‘Tahiti’ [Citrus latifolia (Yu.Tanaka Tanaka]: limão Cravo (C. limonia Osbeck; citrumelo Swingle [Poncirus trifoliata (L. Raf. x C. paradisi Macf.]; trifoliata Flying Dragon (P. trifoliata (L. Raf.var. (FD, no município de José de Freitas, Piauí, localizado a 04º 52’ latitude S e 42º 42’ longitude W, e altitude de 110m, onde predomina clima Aw. Foram abertas trincheiras com quatro repetições, para colocação de quadro-gabarito de madeira, com divisórias de 0,1 m na profundidade por 0,2 m na largura, perfazendo cinco camadas na profundidade e seis posi

  20. \\"Avaliação da desinfecção da dentina radicular em profundidade provocada pela irradiação do laser de diodo de alta potência\\"

    OpenAIRE

    Eliana Barbosa de Souza

    2007-01-01

    A presença de microrganismos no interior do sistema de canais radiculares é a principal causa do fracasso na terapia endodôntica. A importância da sanificação durante o preparo do canal fica clara, portanto. Dentre os microrganismos isolados nos casos de insucesso o Enterococcus faecalis é comumente encontrado. O E. faecalis é um microrganismo resistente à terapia endodôntica, à medicação intracanal de hidróxido de cálcio e sua presença contribui para o insucesso em Endodontia. A radiação las...

  1. Root distribution of irrigated grapevine rootstocks in a coarse texture soil of the São Francisco Valley, Brazil Distribuição radicular de porta-enxertos de videiras irrigadas em um solo de textura arenosa do Vale do São Francisco

    Directory of Open Access Journals (Sweden)

    LUÍS HENRIQUE BASSOI

    2002-04-01

    Full Text Available An experiment was carried out to determine the root distribution of four grapevine rootstocks (Salt Creek, Dogridge, Courdec 1613, IAC 572 in a coarse texture soil of a commercial growing area in Petrolina County, São Francisco Valley, Brazil. Rootstocks were grafted to a seedless table grape cv. Festival, and irrigated by microsprinkler. Roots were quantified by the trench wall method aided by digital image analysis. Results indicated that roots reached 1 m depth, but few differences among rootstocks were found. All of them presented at least 90 % of the roots distributed until 0.6 m depth, with a greater root presence in the first 0.4 m. The upper 0.6 m can be taken into account as the effective rooting depth for soil and water management.Um experimento foi conduzido para se determinar a distribuição radicular de quatro porta-enxertos (Salt Creek, Dogridge, Courdec 1613, IAC 572 em um solo de textura arenosa, em um plantio comercial em Petrolina - PE, no Vale do São Francisco. Os porta-enxertos foram enxertados com a cv. de uva de mesa sem sementes Festival, e irrigados por microaspersão. As raízes foram quantificadas pelo método da parede da trincheira auxiliado pela análise de imagem digital. Os resultados indicaram que as raízes atingiram 1 m de profundidade, mas poucas diferenças entre os porta-enxertos foram observadas. Cerca de 90% do sistema radicular de todos os porta-enxertos estavam distribuídos até 0,6 m de profundidade, mas houve uma grande presença de raízes até 0,4 m. A camada superficial de solo de 0,6 m pode ser considerada como a profundidade efetiva do sistema radicular para fins de manejo de solo e água.

  2. Effectiveness of Slump Neural Mobilization Technique for the management of chronic radicular low back pain

    International Nuclear Information System (INIS)

    Ali, M.; Rehman, S.S.U.; Ahmad, S.; Farooq, M.N.

    2015-01-01

    Objective: To determine the effectiveness of slump neural mobilization technique compared with lumber stabilization exercise (LSE) and shortwave diathermy (SWD) in the physical therapy management of chronic radicular low back pain (CRLBP). Methodology: A sample of 40 patients with CRLBP was selected and randomly placed into two groups A and B. 22 patients were treated with slump neural mobilization technique (SNMT), lumbar stabilization exercise (LSE) and Short wave diathermy (SWD), while 18 patient of group B were treated with LSE and SWD. All the patients were assessed by four point pain scale and Oswestry disability index (ODI) at the baseline and at the completion of three weeks at 5 days per week and 30 minutes single session per day. The data was collected on specially designed Performa and was analyzed by SPSS and paired t test was applied to determine the probability value at 95 % level of significance. Results: Both groups demonstrated significant improvement in pain score and ODI score, although improvement was more significant in group A (p<0.001 for both pain and ODI score) as compared to group B (p=0.003 for pain score and 0.163 for ODI score).table-I-III) Conclusion: It is concluded that SNMTalong LSE and SWD improves pain and function more as compared with LSE and SWD alone during the physical therapy management of CRLBP. (author)

  3. Disponibilidade de cálcio do leite de búfala irradiado por raios gama
    Calcium availability of buffalo milk irradiated by gamma rays

    Directory of Open Access Journals (Sweden)

    R. C. DALLA DEA

    2010-11-01

    Full Text Available

    O leite de búfala é composto por elevados teores de nutrientes, sendo importante, principalmente, como matéria-prima para elaboração de produtos lácteos e fonte de proteínas e cálcio. O presente trabalho teve por objetivo estudar o efeito dos raios gama na disponibilidade de cálcio no leite de búfala. O leite integral foi irradiado nas doses 0,25; 0,50; 0,75 e 1,0 kGy e também foi avaliado o controle, que não foi submetido ao processo de irradiação. Foram avaliadas composição centesimal e teor de cálcio total no primeiro dia para caracterização do leite utilizado. As análises de diálise de cálcio in vitro ocorreram no primeiro, terceiro, sexto e nono dias de armazenamento a 4ºC. Como resultados para a composição centesimal foram obtidos valores de 4,85% de proteína, 7,00% de gordura, 0,79% cinza e 4,45% carboidratos. O teor de cálcio foi 212,43mg/100mL. A irradiação do leite não alterou a disponibilidade de cálcio.

  4. Avaliação da reação periodontal na técnica de colagem extra-alveolar de fraturas radiculares verticais simuladas: estudo histológico

    OpenAIRE

    González Hernández, Pedro Antonio [UNESP

    2005-01-01

    Este estudo teve como objetivo verificar a resposta histológica que ocorre no periodonto de inserção após o reimplante de dentes que foram tratados através da técnica de colagem radicular extra-alveolar. Foram selecionados 16 primeiros pré-molares maxilares e mandibulares de cães (s.r.d), divididos em dois grupos de observação: 21 dias e 90 dias. Sob anestesia geral, os dentes foram extraídos utilizando a técnica primeira de exodontia. Com auxílio de um disco de diamante de dupla face foi rea...

  5. Genetic predictors of recovery in low back and lumbar radicular pain.

    Science.gov (United States)

    Bjorland, Siri; Røe, Cecilie; Moen, Aurora; Schistad, Elina; Mahmood, Aqsa; Gjerstad, Johannes

    2017-08-01

    Previous data suggest that persistent back pain may be associated with genetic variability. In this study, we assessed the correlation between 8 genetic polymorphisms (VDR, COL11, MMP1, MMP9, IL-1α, IL-1RN, OPRM1, COMT) and pain recovery in patients with low back pain (LBP) and lumbar radicular pain (LRP). In total, 296 patients with LBP or LRP were followed for 5 years. The patients underwent standardized clinical examination and completed pain and function questionnaires. Univariate linear regression associations with P values pain intensity at baseline, age, sex, smoking, body mass index, and LBP or LRP. Pain intensity at 5-year follow-up was associated with VDR rs731236 (B = -0.5, 95% confidence interval [CI] -0.9 to -0.1, P = 0.017), MMP9 rs17576 (B = 0.5, 95% CI 0.1-0.9, P = 0.022), and OPRM1 rs1799971 (B = -0.8, 95% CI -1.4 to -0.2, P = 0.006) in the univariate analyses. MMP9 rs17576 and OPRM1 rs1799971 remained significant (B = 0.4, 95% CI 0.05-0.8, P = 0.026 and B = -0.8, 95% CI -1.3 to -0.2, P = 0.007) in the multivariable model. Thus, the data demonstrated that the rare allele of MMP9 rs17576 was associated with poor pain recovery, whereas the rare allele of OPRM1 rs1799971 was associated with better pain recovery at 5-year follow-up in the LBP and LRP patients. In particular, the present study suggested that the OPRM1 rs179971 A>G in men was associated with better long-term pain recovery. In men, the OPRM1 rs1799971 explained 4.7% of the variance of pain intensity. We conclude that the MMP9 rs17576 and OPRM1 rs1799971 genotypes may affect 5-year recovery in patients with LBP and LRP.

  6. Crescimento radicular e nutrição da soja cultivada no sistema plantio direto em resposta ao calcário e gesso na superfície

    Directory of Open Access Journals (Sweden)

    E. F. Caires

    2001-12-01

    Full Text Available A deficiência de cálcio e a toxidez de alumínio têm sido os fatores de acidez mais limitantes ao crescimento de raízes. Com o objetivo de avaliar o crescimento radicular e a absorção de nutrientes pela soja, cv. EMBRAPA 58, e seus reflexos sobre a produção de grãos, considerando as doses de calcário e gesso na superfície, em sistema plantio direto, foi realizado um experimento em um Latossolo Vermelho distrófico textura média, em Ponta Grossa (PR. O delineamento experimental empregado foi o de blocos ao acaso em parcela subdividida, com três repetições. Foram utilizadas quatro doses de calcário dolomítico, com 84% de PRNT: 0, 2, 4 e 6 t ha-1, e quatro doses de gesso agrícola: 0, 4, 8 e 12 t ha-1. A calagem foi realizada em julho e a aplicação de gesso em novembro de 1993. O crescimento radicular da soja não foi afetado pelas condições de acidez, em solo com 15, 12 e 8 mmol c dm-3 de Ca trocável e 28, 32 e 40% de saturação por Al, respectivamente, nas profundidades de 0-10, 10-20 e 20-40 cm. Houve aumento da absorção, pela cultura da soja, de todos os macronutrientes com a calagem, e de Ca e S com a aplicação de gesso. Somente a calagem aumentou a produção de soja, em decorrência de maior disponibilidade e absorção de Mg e de redução dos teores foliares de Zn e Mn.

  7. Comparison of Radicular Peroxide Leakage from four Commonly used Bleaching agents following Intracoronal Bleaching in Endodontically treated teeth - An In Vitro Study.

    Science.gov (United States)

    Madhu, Ks; Hegde, Swaroop; Mathew, Sylvia; Lata, DA; Bhandi, Shilpa H; N, Shruthi

    2013-08-01

    Non vital bleaching is simple, conservative procedure for esthetic correction of discolored endodontically treated teeth. The aim of this study was to determine and compare the amount of peroxide leakage from four different bleaching agents i.e superoxol, sodium perborate, combination of superoxol & sodium perborate and carbamide peroxide during intracoronal bleaching, as the safe and effective bleaching is the need of the hour. 50 extracted maxillary centrals were selected for the study. Following standardized protocol access, cleaning and shaping by step back technique and obturation was done using guttapercha and AH plus sealer. Access was sealed with Cavit G and outer root surface was coated with wax and nail varnish. The teeth were separated into crown and root and the root portion was placed in plastic tube containing distilled water for 7days.After incubation, 3mm of gutta-percha was removed below CEJ and 2mm glass ionomer cement base was placed. Grouped into five categories based on the bleaching agent placed in pulp chamber as -group1 (control)-distilled water, group 2-sodium perborate with distilled water , group 3- 30% hydrogen peroxide ,group 4-mixture of sodium perborate and 30% hydrogen peroxide and group 5-10% carbamide peroxide gel. Peroxide leakage was measured after 24hrs using ferrothiocyanate method and optical density using spectrophotometer. Statistical analysis of the data was conducted using ANOVA and multiple comparisons within the groups was done using BONFERRONI method (Post-Hoc tests). The results showed highest peroxide penetration from 30% hydrogen peroxide followed by mixture of sodium perborate with 30% hydrogen peroxide, mixture of sodium perborate with distilled water and least penetration from 10% carbamide peroxide gel. The results were statistically significant. Radicular peroxide leakage in 10% carbamide peroxide was significantly lower than the other tested bleaching agents making it a very safe alternative for intracoronal

  8. Detecção de fraturas radiculares em imagens de tomografia computadorizada de feixe cônico utilizando diferentes parâmetros de exposição e materiais intracanais

    OpenAIRE

    Pinto, Martina Gerlane de Oliveira

    2015-01-01

    O objetivo deste estudo foi avaliar a detecção de fraturas radiculares (FRs) em imagens de Tomografia Computadorizada de Feixe Cônico (TCFC) utilizando diferentes parâmetros de exposição e analisar a influência da guta- percha, do núcleo metálico fundido e do pino de fibra de vidro no diagnóstico das FRs, assim como a formação de artefatos em TCFC. Cento e sessenta dentes foram selecionados e divididos em quatro grupos de acordo com o material de preenchimento (sem guta-percha, com guta-perch...

  9. Alimentos irradiados

    OpenAIRE

    Sendra, E.; Capellas, M.; Guamis, B.

    2001-01-01

    Not available

    La industria alimentaria y las administraciones públicas realizan grandes esfuerzos para mejorar el mantenimiento de las condiciones higiénicas y evitar la contaminación de alimentos. Pese a estos esfuerzos siguen produciéndose un gran numero de procesos patológicos relacionados con los alimentos. Las buenas prácticas higiénicas pueden reducir el nivel de contaminación, pero algunos microorganismos patógenos resulta imposible eliminarlos, especialmente de aque...

  10. Morphometrical analysis of cleaning capacity using nickel-titanium rotary instrumentation associated with irrigating solutions in mesio-distal flattened root canals Análise morfológica da capacidade de limpeza promovida pela instrumentação rotatória, associada à soluções irrigantes, com limas de níquel-titânio em canais radiculares com achatamento mesio-distal

    Directory of Open Access Journals (Sweden)

    Melissa Andréia Marchesan

    2003-03-01

    Full Text Available Variations in the internal anatomy of root canals may interfere with the success of root canal because tissue remnants may remain in the isthmus, re-entrances and ramifications of flattened root canals making instrumentation more difficult. Successful root canal treatment depends fundamentally on shaping, cleaning, disinfection and obturation. This study verified the quality of cleaning of ProFile .04 rotary technique associated with different irrigating solutions: 0.5% sodium hypochlorite, calcium hydroxide + Tergentol and 2% chlorhexidine in canals with mesio-distal flattening. Twelve human mandibular central incisors were randomly divided into 3 groups and instrumented up to ProFile 0.4 #35 file after cervical preparation, and processed histologically. After optical microscopic evaluation, statistical analysis showed that the percentage of cleaning of the three irrigating solutions was statistically different. Two-by-two comparisons classified the irrigating solutions in increasing order of cleaning: calcium hydroxide + Tergentol As variações da anatomia interna de cada canal radicular podem interferir no sucesso da terapêutica endodôntica devido ao fato de que em canais radiculares achatados, pode persistir remanescentes teciduais em istmos, reentrâncias e ramificações dificultando a execução das técnicas de instrumentação. O sucesso do tratamento dos canais radiculares depende fundamentalmente do preparo da forma, limpeza, desinfecção e obturação. Poucos trabalhos avaliaram a limpeza dos canais radiculares após a instrumentação rotatória. O presente trabalho verificou a qualidade de limpeza dos canais radiculares, por meio da microscopia óptica, promovida pela técnica de instrumentação rotatória associada ao hipoclorito de sódio 0,5%, HCT20 e clorexidina, em canais achatados no sentido mésio-distal. Doze incisivos centrais inferiores humanos foram divididos aleatoriamente em três grupos para que fossem

  11. Radicular compression syndrome in the lumbar region resulting from synovial cyst of the small zygapophysical joints. A case report; Lumbales Wurzelkompressionssyndrom bei Synovialzyste des kleinen Wirbelgelenkes

    Energy Technology Data Exchange (ETDEWEB)

    Stimmer, H. [Inst. fuer Roentgendiagnostik, Klinikum rechts der Isar, Technische Univ. Muenchen (Germany); Allgayer, B. [Inst. fuer Roentgendiagnostik, Klinikum rechts der Isar, Technische Univ. Muenchen (Germany)

    1994-12-01

    The formation of a synovial cyst in the small zygapophysial joints is a possibility to be considered in all patients presenting with vague lumbar pains or radicular syndrome, particularly in individuals of advanced age with a prolonged history of disorders classifiable with the so-called ``facet syndrome`` or degenerative changes to the vertebral column. Both computerized tomography and nmr imaging permit a reliable diagnostic differentiation on the basis of the criteria defined above. (orig./MG) [Deutsch] Die Synovialzyste des kleinen Wirbelgelenkes ist als Differentialdiagnose sowohl unspezifischer lumbaler Beschwerden als auch radikulaerer Syndrome zu beruecksichtigen, dies insbesondere bei aelteren Patienten mit laenger bestehenden Beschwerden im Sinne eines sogen. Facettensyndromes und degenerativen Wirbelsaeulenveraenderungen. Computertomographie und Kernspintomographie erlauben unter Beruecksichtigung der beschriebenen Kriterien eine sichere diagnostische Zuordnung. (orig./MG)

  12. Osteoma de meato acústico externo: relato de nove casos e revisão de literatura

    Directory of Open Access Journals (Sweden)

    Testa José Ricardo G.

    2003-01-01

    Full Text Available Osteoma de meato acústico externo corresponde a um crescimento ósseo anormal e benigno, que se desenvolve abaixo da pele do conduto e pode causar obstrução total ou parcial do meato acústico externo. FORMA DE ESTUDO: Estudo de série. MATERIAL E MÉTODO: Apresentamos neste estudo nove casos de osteoma de meato acústico externo. A idade dos pacientes variou de 23 anos (idade mínima e 70 anos (idade máxima, sendo a média 40,6 anos. Desses nove pacientes, 5 eram do sexo feminino e 4 eram do sexo masculino. RESULTADO: Os sintomas mais comuns foram: hipoacusia, causada pela obstrução parcial ou total do conduto, otites externas recorrentes e também impactação de cerume de difícil remoção. CONCLUSÃO: A conduta nos casos apresentados foi cirúrgica, com boa evolução, não ocorrendo recidivas.

  13. Humic substances isolated from residues of sugar cane industry as root growth promoter Substâncias húmicas isoladas de resíduos da indústria da cana-de-açúcar como promotoras de crescimento radicular

    Directory of Open Access Journals (Sweden)

    Jader Galba Busato

    2010-04-01

    Full Text Available Plant growth promoting substances are widely used in modern agriculture. Several products in the market are humic substances isolated from different sources. The filter cake, a residue of sugar production, is a rich and renewable source of organic matter and these characteristics place the filter cake as a possible source of plant growth promoting substances. Humic acids (HA from filter cake were characterized, and their effects as root growth promoters were evaluated. Chemical features of the HA were evaluated through elemental composition, acidic functional groups, E4/E6 ratio and infrared spectroscopy analyzes. The biological activity of the HA was assessed using root architecture parameters and the P-type H+-ATPase activity. The lateral root development was directly related to the stimulation of plasma membrane ATPase activity. The ability of HA to promote root development indicate that HA from filter cake can be used as environmental plant growth stimulators.Substâncias promotoras do crescimento vegetal são amplamente utilizadas na agricultura moderna. Existem vários produtos no mercado, muitos dos quais são substâncias húmicas isoladas de diferentes fontes. A torta de filtro, um resíduo da produção do açúcar, é uma fonte rica e renovável de matéria orgânica e essas características a tornam uma possível fonte de substâncias promotoras do crescimento vegetal. Ácidos húmicos (AH da torta de filtro foram caracterizados, e foi avaliado seu efeito como promotor de crescimento radicular. As características químicas dos AH foram avaliadas por meio da composição elementar, grupos funcionais ácidos, relação E4/E6 e espectroscopia de infravermelho. A atividade biológica dos AH foi acessada avaliando-se a arquitetura radicular e a atividade da H+-ATPase de membrana plasmática. O desenvolvimento de raízes laterais foi diretamente relacionado ao estímulo da atividade da H+-ATPase. A habilidade dos AH em promover o

  14. Outcome analysis of two different injection solutions for epidural injection in radicular lumbar backache syndromes

    International Nuclear Information System (INIS)

    Saqib, M.; Mukhtar, M.; Bhatti, S.N; Afridi, E.A.K.; Khan, R.

    2017-01-01

    Background: Backache is a significant source of disability and suffering in our society. The treatment modalities need continued enhancement in order to achieve the desired goals of lowering morbidity and financial losses while improving the response of the patient. Methods: This prospective comparative study was conducted at the department of Orthopaedics and Spine Surgery, Khyber Teaching Hospital Peshawar from July 2013 to June 2015. Two interventional groups were designated; Group 1 was comprised of 54 patients who were injected with epidural bupivacaine plus methylprednisolone while Group 2 included 55 patients who were injected with bupivacaine only. Outcome was assessed using the visual analogue scale and Oswestry disability index (ODI). Results: Fifty-five female and 54 male patients with mean age 49.37 years+-10.46 SD, Mean symptoms duration was 15.01 months+-9.32 SD. Common presenting symptoms were backache (77.1 percent), lower limbs pain (66.1 percent), dermatomal paresthesias (54.1 percent) and neurogenic claudication in 57.8 percent patients. The mean visual analogue score (VAS) after injection was 3.18+-1.29 while mean ODI after injection was 23.615. There was a statistically significant reduction in VAS scores (2-sided p=0.003, OR =4.03, 95 percent CI: 1.535-10.60) following the injection. Conclusion: An epidural spinal injection is a viable option for achieving relief of pain and improves functioning in individuals with radicular backache. However, further research is advised in order to clarify the role of ESI for long-term relief. (author)

  15. Bioinformatics, interaction network analysis, and neural networks to characterize gene expression of radicular cyst and periapical granuloma.

    Science.gov (United States)

    Poswar, Fabiano de Oliveira; Farias, Lucyana Conceição; Fraga, Carlos Alberto de Carvalho; Bambirra, Wilson; Brito-Júnior, Manoel; Sousa-Neto, Manoel Damião; Santos, Sérgio Henrique Souza; de Paula, Alfredo Maurício Batista; D'Angelo, Marcos Flávio Silveira Vasconcelos; Guimarães, André Luiz Sena

    2015-06-01

    Bioinformatics has emerged as an important tool to analyze the large amount of data generated by research in different diseases. In this study, gene expression for radicular cysts (RCs) and periapical granulomas (PGs) was characterized based on a leader gene approach. A validated bioinformatics algorithm was applied to identify leader genes for RCs and PGs. Genes related to RCs and PGs were first identified in PubMed, GenBank, GeneAtlas, and GeneCards databases. The Web-available STRING software (The European Molecular Biology Laboratory [EMBL], Heidelberg, Baden-Württemberg, Germany) was used in order to build the interaction map among the identified genes by a significance score named weighted number of links. Based on the weighted number of links, genes were clustered using k-means. The genes in the highest cluster were considered leader genes. Multilayer perceptron neural network analysis was used as a complementary supplement for gene classification. For RCs, the suggested leader genes were TP53 and EP300, whereas PGs were associated with IL2RG, CCL2, CCL4, CCL5, CCR1, CCR3, and CCR5 genes. Our data revealed different gene expression for RCs and PGs, suggesting that not only the inflammatory nature but also other biological processes might differentiate RCs and PGs. Copyright © 2015 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  16. Efecto del volumen radicular sobre el crecimiento de Acacia dealbata Link. en vivero y en terreno en el secano de la Región del Biobío, Chile

    Directory of Open Access Journals (Sweden)

    Iván Quiroz

    2014-02-01

    Full Text Available Entre las especies arbóreas cultivadas en Chile, Acacia dealbata Link. se destaca por su rápido crecimiento y supervivencia en climas con marcado déficit hídrico y suelos altamente degradados. Aun cuando proporciona múltiples productos y servicios, la mayor parte de la investigación se ha centrado caracterizar su capacidad invasora, y poco se conoce respecto a su crecimiento durante los primeros años en terreno, escaseando antecedentes respecto efecto de la modificación de las prácticas silvícolas durante la producción y establecimiento de plantas. Por ello, este estudio analiza el efecto de la modificación del volumen radicular sobre el crecimiento durante la viverización, y la supervivencia y crecimiento culminadas la primera y segunda temporada en terreno. Finalizada la viverización resultó significativo el efecto del volumen radicular sobre el DAC y la altura total (P<0,05, los mayores valores se obtuvieron en plantas producidas con volumen de 100 cm³. Los volúmenes más altos presentaron los mayores índices de esbeltez y de Dickson (P<0.05, mientras que los mejores índices tallo/raíz se observaron con los volúmenes de 56 y 24 cm³ (P<0,05. Culminadas la primera y segunda temporada de crecimiento el efecto del volumen sobre la supervivencia resultó no significativo. Luego de la segunda temporada, se destacó el mayor incremento corriente anual en DAC del tratamiento de 24 cm³ (5,53 ± 1,63 mm. Luego de ambas temporadas se destacó una tendencia a la igualación en altura entre los tratamientos de 100, 80 y 24 cm³, el mayor crecimiento absoluto y relativo se observó en el tratamiento de 24 cm³.

  17. Técnica para correção de truncus arteriosus tipos I e II sem condutos extracardíacos Technique for correction of truncus arteriosus type I and II without extracardiac conduits

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    Miguel Barbero-Marcial

    1989-04-01

    Full Text Available Uma nova técnica para correção cirúrgica do truncus arteriosus (TA sem o uso de conduto extracardíaco foi realizada em 7 pacientes, senão 6 do tipo I, e do tipo II em 1 paciente; a idade variou de 2 a 9 meses. O tronco comum foi septado com retalho, dividindo-o em uma posição aórtica e outra pulmonar; a comunicação interventricular (CIV foi fechada através de ventriculotomia; anastomose direta entre as artérias pulmonares e o ventrículo direito foi realizada, sendo a parede anterior construída com retalho de pericárdio bovino com válvula monocúspide. Houve apenas 1 óbito no pós-operatório. Nos 6 pacientes restantes, a relação entre as pressões sistólicas ventrículo direito/ventrículo esquerdo (VD/VE foi menor que 0,51 em 5 pacientes; em 1 paciente, essa relação foi de 0,60, associada a CIV residual. Todos os pacientes encontram-se em classe funcional I (NYHA, em um período de 1 a 14 meses de pós-operatório. Baseados nestes resultados, propomos esta técnica para pacientes com TA tipo I ou II, no primeiro ano de vida.A new corrective surgery for truncus arteriosus (TA without the use of extracardiac conduit was employed in 7 patients with truncus (TA type I in 6 cases and type II in 1 case, aged from two to nine months. The common TA was septated with a patch into aortic and pulmonary segments and the ventricular septal defect was closed through ventriculotomy; a direct anastomosis between the pulmonary arteries and the right ventricle was performed, the anterior wall of this, being contructed with a patch with a monocusp valve. There was one imediate postoperative death. In the surviving six patients the RV/LV postoperative peak systolic was less than 0.51 in five and 0.60 in one with residual VSD; all are in functional class I, in postoperative period between one and fourteen months. Based in these results we propose this technique for patients with type I or II, in the first year of life.

  18. Location and angulation of curvatures of mesiobucal canals of mandibular molars debrided by three endodontic techniques Posição e angulação de curvaturas radiculares em canais mesiobucais de molares inferiores preparados por três técnicas endodônticas

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    Isa Geralda Teixeira Constante

    2007-03-01

    Full Text Available The aim of this study was to assess the correlation between the degree of angulation and the position of root curvatures and their influence on the comparative results between the performances of the Progressive, Staged and Serial Preparation Techniques. The mesiobucal canals of 70 extracted mandibular molars were filled with a radiological contrast of 100% Barium sulphate and radiographed with a direct digital radiographic system, in an apparatus that guarantees that the samples remain in the same spatial position at all times. The images were then analyzed in the Coreldraw 10 program (MicroSafe, RJ, Brasil in accordance with two criteria: the methods of Berbert, Nishiyama¹ (1994 and Schneider11 (1971 to determine the position and the angle of the root curvatures, respectively. Initially, the possibility of correlation between these two variables was studied. The teeth were then selected according to angulation (greater than 25 degrees and position of root curvatures (cervical, median and apical in order to perform the endodontic techniques. After preparation, the samples were radiographed again and the images were superimposed in order to compare the pre- and post-operative areas. The difference between them showed the percentage of widening for each technique. The results showed that there was no correlation between the angulations and the root curvature positions, and that the different positions did not interfere in the performance of the techniques. The Progressive Preparation technique produced the highest widening values for all the groups, irrespective of the root curvature position.O objetivo deste trabalho foi verificar a correlação entre o grau de angulação e a posição das curvaturas radiculares, e a sua influência nos resultados comparativos entre os desempenhos das técnicas do Preparo Progressivo, Escalonada e Seriada. Os canais mésio-vestibulares de 70 dentes molares inferiores extraídos foram preenchidos com um

  19. Doses de boro e crescimento radicular e da parte aérea de cultivares de arroz de terras altas Influence of boron addition on growth of roots and shoot of upland rice crops

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    Juliano Corulli Corrêa

    2006-12-01

    Full Text Available O crescimento radicular é favorecido em condições adequadas de disponibilidade de boro no solo e, por isto, a aplicação da dose correta desse micronutriente é de grande importância, para que não ocorra prejuízo no desenvolvimento e na produtividade da cultura de arroz de terras altas, de acordo com a variedade e tipo de solo. O presente trabalho teve como objetivo avaliar a influência das doses de boro no crescimento radicular e da parte aérea, em três cultivares de arroz de terras altas. O experimento foi realizado em casa de vegetação, em vaso com capacidade de 10 L, que continha 8 dm³ de solo Latossolo Vermelho distrófico, sendo o delineamento experimental inteiramente casualizado, em esquema fatorial 3 x 3, com quatro repetições. Os tratamentos consistiram de três cultivares (Caiapó, Primavera e Maravilha e três doses de boro (0, 3 e 6 mg dm-3, usando, como fonte, o bórax. A dose de 6 mg dm-3 foi prejudicial tanto à produção de matéria seca da parte aérea como de raiz para o arroz de terras altas. Além de apresentar maior capacidade de absorção de boro, o cultivar Maravilha apresentou-se mais tolerante à elevação da disponibilidade de B no solo, não ocorrendo alterações de comprimento, diâmetro e superfície radicular.Appropriate boron (B availability in soils favors root growth, and a sufficient supply of this micronutrient is very important for adequate rice development and yield in upland fields, depending on the cultivars and soil type. This study aimed at evaluating the influence of B addition on growth of roots and shoot of three upland rice cultivars. The experiment was carried out in a greenhouse, in 10 L pots containing 8 kg of an Hapludox; the experiment was in a completely random 3 x 3 factorial design, with four replications. The treatments consisted of three rice cultivars (Caiapó, Primavera, and Maravilha and three B rates (0, 3 and 6 mg dm-3, as borax. The B rate of 6 mg dm-3 boron was

  20. Evolução da anatomia radicular do milho 'Saracura' em ciclos de seleção sucessivos Evolution of the root anatomy of 'Saracura' maize in successive selection cycles

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    Fabricio José Pereira

    2008-12-01

    Full Text Available Este trabalho teve como objetivo verificar as modificações nas características anatômicas radiculares relacionadas à hipoxia, durante 18 ciclos de seleção da variedade de milho (Zea mays BRS 4154 Saracura, adaptada a áreas sujeitas a alagamento. A variedade BR 107 e o híbrido simples BRS 1010, suscetíveis ao alagamento, foram utilizados como controle. As diferentes cultivares foram submetidas a alagamentos intermitentes, a cada dois dias, durante dois meses. As amostras radiculares foram preparadas e analisadas em microscopiaóptica. Em relação ao grupo controle e aos ciclos anteriores de seleção, a BRS 4154 teve aumento na formação de aerênquima, diminuição do córtex, diminuição do diâmetro dos vasos, diminuição da camada subepidérmica, aumento na espessura do floema e epiderme. Os sucessivos ciclos de seleção melhoraram as características do milho 'Saracura' e sua tolerância a ambientes alagados.This work aimed to verify the modifications in the root anatomical characteristics related to hypoxia, along 18 selection cycles of the maize (Zea mays cultivar BRS 4154 Saracura, adapted to areas subject to flooding. Cultivars not tolerant to fooding, BR 107 and the simple hybrid BRS 1010, were used as controls. The different cultivars were subjected to intermittent soil waterlogging every two days for two months. The root samples were prepared and analyzed through light microscopy. Compared to the controls group and to early selection cycles, BRS 4154 had increased development of aerenchyma, decreased cortex thickness, decreased metaxylem diameter, decreased subepidermal layer, and increased epidermis and phloem thickness. The successive selection cycles improved 'Saracura' maize characteristics and its tolerance to flooding environments.

  1. Citrus asymmetric somatic hybrids produced via fusion of gamma-irradiated and iodoacetamide-treated protoplasts Híbridos somáticos assimétricos de citros produzidos pela fusão de protoplastos irradiados e tratados com iodoacetamida

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    Claudine Maria de Bona

    2009-05-01

    Full Text Available The objective of this study was to produce citrus somatic asymmetric hybrids by fusing gamma-irradiated protoplasts with iodoacetamide-treated protoplasts. Protoplasts were isolated from embryogenic suspension cells of grapefruit (Citrus paradisi Macfad. cultivars Ruby Red and Flame, sweet oranges (C. sinensis Osbeck 'Itaboraí', 'Natal', Valencia', and 'Succari', from 'Satsuma' (C. unshiu Marcow. and 'Changsha' mandarin (C. reticulata Blanco and 'Murcott' tangor (C. reticulata x C. sinensis. Donor protoplasts were exposed to gamma rays and receptor protoplasts were treated with 3 mmol L-1 iodoacetamide (IOA, and then they were fused for asymmetric hybridization. Asymmetric embryos were germinated, and the resulting shoots were either grafted onto sour orange, rough lemon or 'Swingle' (C. paradisi x Poncirus trifoliata x 'Sunki' mandarin rootstock seedlings, or rooted after dipping their bases in indol-butyric acid (IBA solution. The products were later acclimatized to greenhouse conditions. Ploidy was analyzed by flow cytometry, and hybridity was confirmed by amplified fragment length polymorphism (AFLP analysis of plantlet DNAsamples. The best treatment was the donor-recipient fusion combination of 80 Gy-irradiated 'Ruby Red' protoplasts with 20 min IOA-treated 'Succari' protoplasts. Tetraploid and aneuploid plants were produced. Rooting recalcitrance was solved by dipping shoots' stems in 3,000 mg L-1 IBA solution for 10 min.O objetivo deste trabalho foi produzir híbridos somáticos assimétricos de citros pela fusão de protoplastos irradiados com raios gama e protoplastos tratados com iodoacetamida. Protoplastos foram isolados de suspensões celulares embriogênicas de pomelo (Citrus paradisi Macfad., cultivares Ruby Red e Flame, de laranja doce (C. sinensis Osbeck 'Itaboraí', 'Natal', Valencia' e 'Succari', de tangerinas 'Satsuma' (C. unshiu Marcow. e 'Changsha' (C. reticulata Blanco e de tangor 'Murcott' (C. reticulata x C. sinensis

  2. Análise radiográfica computadorizada da reabsorção radicular apical após a utilização de duas mecânicas ortodônticas Computer-assisted radiographic evaluation of apical root resorption following orthodontic treatment with two different fixed appliance techniques

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    Eduardo César Almada Santos

    2007-02-01

    Full Text Available OBJETIVO: a reabsorção radicular apical é uma condição comumente observada durante e após o tratamento ortodôntico e fatores como tipo de aparelhagem ortodôntica utilizada, magnitude das forças aplicadas e duração do tratamento podem estar relacionados ao processo de arredondamento do ápice radicular. Buscou-se avaliar, por meio de imagens radiográficas computadorizadas, a quantidade de reabsorção no ápice radicular, quando da utilização de duas diferentes técnicas de mecânica ortodôntica fixa: Edgewise com acessórios padrão e Edgewise com acessórios totalmente programados. METODOLOGIA: a amostra constituiu-se de 20 pacientes tratados pelo mesmo profissional na Clínica de Ortodontia da Faculdade de Odontologia de Araçatuba - UNESP. Os pacientes foram divididos em dois grupos: grupo 1 (Tratados com Edgewise com acessórios padrão e fios de aço e grupo 2 (Tratados com Edgewise com acessórios totalmente programados e fios de níquel-titânio. A avaliação radiográfica digital foi realizada por um único operador por meio de exposições radiográficas digitais feitas no início do tratamento ortodôntico, após retração de caninos e final de tratamento, utilizando o sistema de escores proposto por Levander e Malmgren (1988. RESULTADOS E CONCLUSÕES: a análise dos escores permitiu concluir que o tratamento ortodôntico empregando a técnica Edgewise com acessórios totalmente programados e fios de níquel-titânio apresentou menores graus de reabsorção radicular apical, em comparação à técnica Edgewise com acessórios padrão e fios de aço. Observou-se que, independentemente da técnica empregada, o tratamento ortodôntico como um todo apresentou um grau moderado de reabsorção radicular apical.AIM: external apical root resorption is frequently observed during and after orthodontic treatment and can be related to factors such as mechanical factors, magnitude of forces and treatment time with fixed appliances

  3. Quinta parte. Pudriciones Fungosas Radiculares del Fríjol en Valle de Medellín Colombia

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    Cárdona Álvarez Canúto

    1954-11-01

    Full Text Available En esta parte se hace el resumen del estudio que se realizo sobre las pudriciones fungosas radiculares del fríjol en el valle de Medellín, a continuación se enumeran las conclusiones a las que se llegaron: 1A partir de 1948 se hizo un estudio de determinación de los hongos que causan pudriciones de la raíz del fríjol. Dicho estudio se efectuó en Medellín e incluyó organismos de la región y de otros lugares, como Andes, Armero y Palmira. Se usaron organismos que se encontraron asociados con pudriciones de la raíz del fríjol, vigna, remolacha y soya. 2Lo organismos aislados se obtuvieron directamente de las raíces afectadas y no de otra fuente como el suelo o la semilla. 3Concomitante con la obtención de los cultivos de los organismos, se hizo un estudio abarcando apreciación de distribución de los hongos en los plantíos y pérdidas en rendimiento, causadas por los agentes, expresadas en peso de semilla. Se obtuvieron porcentajes naturales de infección variando entre 68.55 y 100% y reducción en el rendimiento hasta del 93%. 4Se hizo una descripción de síntomas y de signos para cada especie patógena encontrada durante este trabajo. Asimismo se estudió la clasificación taxonómica de cada organismo en particular.

  4. Aplicação superficial de diferentes fontes de corretivos no crescimento radicular e produtividade da aveia preta Surface application by different lime source in root growth and yield of black oat

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    Juliano Corulli Corrêa

    2008-08-01

    Full Text Available Em solos ácidos, a prática da calagem superficial favorece o crescimento radicular, principalmente na superfície do solo, bem como a produtividade das culturas em condições normais de precipitação pluviométrica. Entretanto, pouco se sabe sobre a adoção desta prática e suas eventuais ações, no solo e nas plantas, em relação a outras fontes de corretivos. O objetivo do trabalho foi avaliar o efeito da aplicação superficial de diferentes corretivos nos atributos químicos do solo, no crescimento radicular, da parte aérea e na produtividade da aveia preta. O trabalho foi desenvolvido em campo sobre Latossolo Vermelho distrófico, durante o ano agrícola de 2004, dois anos após a aplicação superficial dos corretivos, no sistema plantio direto. Os tratamentos constituíram da aplicação superficial de calcário dolomítico, escoria de aciaria - E, lama cal - Lcal, lodo de esgoto centrifugado - LC e sem aplicação de corretivo, em delineamento em blocos casualizados com quatro repetições. A aplicação superficial de calcário, escória de aciaria, lama cal, lodo de esgoto centrifugado permitiu o aumento nos valores de pH, no teor de Ca, na maior disponibilidade de P e na redução dos teores de Al no solo. O crescimento do sistema radicular, o desenvolvimento da parte aérea e a produtividade da aveia preta foram incrementados com a aplicação superficial dos corretivos de acidez no sistema plantio direto.Surface lime application to an acid soil under no-till system and normal rainfall conditions increases yield and crop root growth near the soil surface, but the effects of lime sources like flue dust, sewage sludge and aqueous lime have not been fully investigated . The experiment aimed to evaluate the effects of surface application of different lime sources on soil chemical attributes of a clayey, dystrophic Oxisol and black oat root growth and yield under a no-till system. Evaluations were conducted two years after the

  5. Sistema radicular de plantas de cobertura sob compactação do solo Root system of cover crops under soil compaction

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    Wainer G. Gonçalves

    2006-04-01

    Full Text Available Com o objetivo de avaliar a capacidade de crescimento de raízes em camadas de solo compactadas, quatro espécies de plantas de cobertura (amaranto, milheto ADR 500, capim pé-de-galinha e kenaf foram cultivadas em anéis de PVC, com níveis de compactação em subsuperfície (densidade do solo: 1,18; 1,34; 1,51 e 1,60 Mg m-3, sendo o experimento conduzido em casa de vegetação, utilizando-se de um Latossolo Vermelho distroférrico. A camada compactada em subsuperfície foi restritiva ao crescimento de raízes das espécies estudadas, ocasionando a concentração de raízes na camada superficial. O milheto ADR 500 e o amaranto foram as espécies que se destacaram na produção de massa seca da parte aérea e conseguiram desenvolver-se nas camadas compactadas e abaixo delas. O milheto ADR500 apresentou maior densidade de comprimento radicular em todas as camadas. O capim pé-de-galinha e o amaranto tiveram comportamento semelhante quanto à densidade de comprimento radicular. O capim pé-de-galinha e o kenaf apresentaram menor massa seca de raízes em relação às demais espécies. O kenaf apresentou menores valores de massa seca da parte aérea, mas não foi afetado pela presença de camadas compactadas.With the objective of evaluate the root growth capacity in the compacted soil layer, four vegetal species of the cover crops (amaranth, pearl millet ADR500, finger millet and kenaf were cultivated in columns of PVC with increasing levels of subsurface compaction (soil bulk densities: 1.18; 1.34; 1.51 and 1.60 Mg m-3. The experiment was carried out in a greenhouse conditions, using a Dusky Red Latosol. The subsurface compacted layer was restrictive to the roots growth of the studied species, causing the root concentrating to the surface. Pearl millet ADR500 and the amaranth were the species that had detached in the production of dry matter weight and developed itself in the compacted layers and below of them. Pearl of millet ADR500 presented the

  6. Estudo da topografia e da osseointegração de implante de titânio sob ação do LASER, com ou sem deposição de hidroxiapatita, em coelhos

    OpenAIRE

    Sisti, Karin Ellen

    2011-01-01

    Objetivo: Estudar a topografia a osseointegração de implantes de titânio sob ação do LASER de alta intensidade com e sem deposição química de hidroxiapatita, em coelhos. Método: Foram utilizados 30 coelhos albinos que receberam em suas tíbias 3 tipos de superfície de implantes: grupo controle(GI) implantes usinados, grupo(GII) irradiado LASER(Yb), e grupo irradiado e depositado hidroxiapatita pelo método biomimético(GIII). Após os períodos de avaliações (30 e 60 dias) os implantes foram subme...

  7. Effect of biomechanical preparation and calcium hydroxide pastes on the antisepsis of root canal systems in dogs Ação do preparo biomecânico e de pastas à base de hidróxido de cálcio na anti-sepsia do sistema de canais radiculares de cães

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    Janir Alves Soares

    2005-03-01

    Full Text Available In the endodontic treatment of root canals with necrotic pulps associated with periapical radiolucent areas, one of the main objectives of treatment consists in eliminating the microorganisms spread throughout the ramifications of the root canal system. The scope of this study was to evaluate the antiseptic efficacy of biomechanical preparation and two calcium hydroxide-based pastes, in dogs' teeth with experimentally induced chronic periapical lesions. After initial microbiological sampling, instrumentation of the root canals was undertaken using the conventional technique, using K type files used in conjunction with a solution of 5.25% sodium hypochlorite. After ninety-six hours, further microbiological sampling was undertaken and Calen/CPMC or Calasept pastes were applied for 15 and 30 days. Ninety six hours after the removal of the medication, the third microbiological sampling was undertaken and finally histomicrobiological analysis followed using Brown & Brenn staining. The results were analyzed using the Kruskall-Wallis test, with a level of significance established at 5% (p0.05, characterized by an elevated incidence of cocci, bacilli and filaments, predominantly gram-positive, in root canals, secondary canals and accessories, apical cementoplasts and dentinal tubules, but with a low incidence of microorganisms in areas of cementum resorption and the periapical lesion. The biomechanical preparation and intracanal dressing based on calcium hydroxide were important in the antisepsis of the root canal; however, both procedures did not produce significant changes in the microbiological aspects of the root canal system.No tratamento endodôntico dos canais radiculares com polpa necrótica associados à áreas radiolúcidas periapicais, um dos principais objetivos consiste em eliminar os microrganismos situados em todo o sistema de ramificações. Por conseguinte, o objetivo deste estudo foi avaliar a eficácia anti-séptica do preparo

  8. Evaluation of radioprotective effect of carnosine (beta- alanyl-1- histidine on the wound healing in rats Avaliação do efeito radioprotetor da carnosina (beta-alanil-1- histidina no processo de cicatrização em ratos

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    Rosana Aramaki Tanaka

    2005-09-01

    Full Text Available The purpose of this study was to evaluate the radioprotective effect of carnosine (beta- alanyl-1-histidine on the wound healing in rats. Therefore, 48 male rats were submitted to a surgical procedure to perform a rectangular wound in the anterior-dorsal region. The animals were divided into 4 experimental groups randomly chosen: control; irradiated; carnosine irradiated and carnosine group. The irradiated and carnosine irradiated group were exposed to a dose (6Gy of gamma irradiation, in the whole body, 72 hours after surgery. The carnosine and carnosine irradiated groups, in addition to the surgical procedure and the irradiation, received two doses of carnosine aqueous solution, the first one being injected 48 hours after surgery, and the second one 1 hour and 30 minutes before irradiation. The tissue repair of the 4 groups was evaluated at 4, 7, 14, and 21 days after inflicting the wound, by morphological, histochemical and histophysical methods. At all examined periods, it could be observed that the animals from the carnosine irradiated group presented a better developed granulation tissue than the irradiated group and closely similar to that of the control group. Thus, under the experimental conditions used, it was possible to conclude that carnosine is an effective radioprotective substance.O objetivo deste estudo foi avaliar o efeito radioprotetor da carnosina (beta-alanil-1-histidina no processo de cicatrização em ratos. Para isto, 48 ratos machos foram submetidos a um procedimento cirúrgico para realização de uma ferida retangular na região dorsal anterior. Os animais foram divididos aleatoriamente em 4 grupos experimentais: controle, irradiado, carnosina irradiado e carnosina. Os grupos carnosina e carnosina irradiado foram exposto a uma dose de corpo todo de 6 Gy de radiação gama, 72 horas após a cirurgia para confecção da ferida. O grupo carnosina e carnosina irradiado, adicionalmente, ao procedimento cirúrgico e a

  9. Avaliação do efeito radioprotetor do selenito de sódio no processo de reparação tecidual em ratos Evaluation of the radioprotective effect of sodium selenite in the tissue repair process in rats

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    Fabrício M. Tuji

    2005-09-01

    Full Text Available OBJETIVO: Avaliar a ação radioprotetora do selenito de sódio no processo de reparação tecidual. MATERIAIS E MÉTODOS: Ratos Wistar foram submetidos a procedimento cirúrgico para a realização de ferida na região dorsal. Os animais foram divididos em quatro grupos experimentais: controle, selênio, irradiado e selênio-irradiado. Os grupos selênio e selênio-irradiado receberam 2,0 mg/kg de selenito de sódio, 48 horas após a cirurgia. Os grupos irradiado e selênio-irradiado foram submetidos à irradiação em dose única de 6 Gy, administrada somente nas bordas das feridas. Após 4, 7, 13 e 21 dias do procedimento cirúrgico, os animais foram sacrificados e avaliados por meio de análise morfológica, histoquímica e birrefringência do tecido. RESULTADOS: O aspecto estrutural e morfológico, assim como a qualidade do tecido e sua maturação através da quantidade e disposição dos feixes de fibras colágenas, juntamente com o seu grau de orientação macromolecular, permitiu observar a presença de intenso retardo provocado pela irradiação, bem como o efeito radioprotetor do selenito de sódio no processo de reparação. CONCLUSÃO: Dentro das condições experimentais utilizadas, o selenito de sódio apresentou-se como radioprotetor eficaz, visto que o processo de reparação no grupo selênio-irradiado comportou-se, histologicamente, semelhante ao grupo controle.OBJECTIVE: To evaluate the radioprotective effect of sodium selenite in the tissue repair process. MATERIALS AND METHODS: Male Wistar rats submitted to a surgical procedure to produce a wound in the dorsal region. These animals were then divided in four experimental groups: control, selenium, irradiated and selenium-irradiated. The selenium and selenium-irradiated groups received sodium selenite (2.0 mg/kg, 48 hours after surgery. The irradiated and selenium-irradiated groups received a single dose of 6 Gy, administered only in the borders of the wound. The animals were

  10. Do L5 and s1 nerve root compressions produce radicular pain in a dermatomal pattern?

    Science.gov (United States)

    Taylor, Christopher S; Coxon, Andrew J; Watson, Paul C; Greenough, Charles G

    2013-05-20

    Observational case series. To compare the pattern of distribution of radicular pain with published dermatome charts. Dermatomal charts vary and previous studies have demonstrated significant individual subject variation. Patients with radiologically and surgically proven nerve root compression (NRC) caused by prolapsed intervertebral disc completed computerized diagrams of the distribution of pain and pins and needles. Ninety-eight patients had L5 compressions and 83 had S1 compressions. The distribution of pain and pins and needles did not correspond well with dermatomal patterns. Of those patients with L5 NRC, only 22 (22.4%) recorded any hits on the L5 dermatome on the front, and only 60 (61.2%) on the back with only 13 (13.3%) on both. Only 1 (1.0%) patient placed more than 50% of their hits within the L5 dermatome. Of those patients with S1 NRC, only 3 (3.6%) recorded any hits on the S1 dermatome on the front, and only 64 (77.1%) on the back with only 15 (18.1%) on both. No patients placed more than 50% of their hits within the S1 dermatome. Regarding pins and needles, 27 (29.7%) patients with L5 NRC recorded hits on the front alone, 27 (29.7%) on the back alone, and 14 (15.4%) on both. Nineteen (20.9%) recorded more than 50% of hits within the L5 dermatome. Three (3.6%) patients with S1 NRC recorded hits on the front alone, 44 (53.0%) on the back alone, and 18 (21.7%) on both. Twelve (14.5%) recorded more than 50% of hits within the S1 dermatome. Patient report is an unreliable method of identifying the anatomical source of pain or paresthesia caused by nerve root compression. 4.

  11. Uso de estimulantes de crescimento radicular associado a doses de fósforo na cultura do feijoeiro

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    José Iran Cardoso da Silva

    2010-08-01

    Full Text Available O trabalho teve como objetivo avaliar o efeito da aplicação do Stimulate e Forth Seed associados a cinco doses de fósforo(P no desenvolvimento do sistema radicular e parte aérea de plantas de feijão. O experimento foi desenvolvido em condições de casa de vegetação nas dependências do Departamento de Recursos Naturais – Ciência do Solo, da Faculdade de Ciências Agronômicas (FCA, UNESP, Campus de Botucatu, SP. O solo usado foi um Latossolo Vermelho Escuro de textura média. As unidades experimentais foram vasos contendo 8 dm3 de solo mantendo-se a umidade correspondente a 60% do Volume Total de Poros (VTP ocupados por água. Utilizou-se a cultivar de feijão IAC-Carioca, em um delineamento experimental inteiramente casualizado, sendo os tratamentos constituídos de dois produtos (Stimulate e Forth Seed nas respectivas doses 5 e 3 mL Kg-1 de sementes e uma testemunha sem biofertilizante, e 5 doses de P (0, 16, 32, 64 e 128 mg dm-3, com três repetições. Foi avaliada, também, a qualidade fisiológica das sementes usadas no experimento por meio de: a primeira contagem do teste padrão de germinação; b emergência; c vigor, mediante a contagem de emergência; d velocidade de emergência e determinação do crescimento das plântulas. O uso de Stimulate e Forth Seed agregados a doses de P causou redução no peso seco final das plantas.

  12. Crescimento radicular de soja em razão da sucessão de cultivos e da compactação do solo Soybean root growth as affected by previous crop and soil compaction

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    Rosemeire Helena da Silva

    2002-06-01

    Full Text Available O objetivo do experimento foi avaliar o crescimento radicular e produção de matéria seca da parte aérea da soja (Glycine max (L. Merrill cultivada após diversas espécies vegetais, em solo com diferentes níveis de compactação. O trabalho foi realizado em vasos contendo amostras de um Latossolo Vermelho, textura franco arenosa, com camada de 3,5 cm (profundidade de 15 a 18,5 cm compactada até as densidades 1,12, 1,36 e 1,60 Mg m-3, onde cultivaram-se anteriormente aveia-preta, guandu, milheto, mucuna-preta, soja, sorgo granífero e tremoço-azul, e um tratamento sem planta (pousio. Essas espécies se desenvolveram por 37 a 39 dias, foram cortadas ao nível do solo, picadas em partes de aproximadamente 3 cm e deixadas sobre a superfície do vaso por 40 dias. Após esse período, cultivou-se a soja até 28 dias após a emergência, quando, então, as plantas foram colhidas. Foram avaliados produção de matéria seca da parte aérea e de raízes, e comprimento e diâmetro radicular da soja. O cultivo anterior com aveia-preta, guandu e milheto favoreceu o crescimento radicular da soja abaixo de camadas compactadas do solo. Independentemente do nível de compactação, o cultivo anterior com qualquer das espécies estudadas beneficiou a produção de matéria seca da parte aérea da soja.This study aimed at evaluating root growth and shoot dry matter production of soybean (Glycine max (L. Merrill cropped after different vegetal species, in a soil with different compaction levels. The experiment was conducted in pots containing a Dark-Red Latosol (Acrortox, loamy sand, and the pots had a layer 3.5 cm (15 to 18.5 cm thick and 15 cm deep compacted to 1.12, 1.36 and 1.60 Mg m-3. Before soybean, the pots were cropped with black oat, pigeon pea, pearl millet, black mucuna, soybean, grain sorghum and lupin, plus a treatment without plants. These species were grown for 37 to 39 days, when they were cut at soil level, prick in particles of

  13. Expression of Ki-67 in odontogenic cysts: A comparative study between odontogenic keratocysts, radicular cysts and dentigerous cysts.

    Science.gov (United States)

    Modi, Tapan G; Chalishazar, Monali; Kumar, Malay

    2018-01-01

    Odontogenic cysts are the most common cysts of the jaws and are formed from the remnants of the odontogenic apparatus. Among these odontogenic cysts, radicular cysts (RCs) (about 60% of all diagnosed jaw cysts), dentigerous cysts (DCs) (16.6% of all jaw cysts) and odontogenic keratocysts (OKCs) (11.2% of all developmental odontogenic cysts) are the most common. The behavior of any lesion is generally reflected by its growth potential. Growth potential is determined by measuring the cell proliferative activity. The cell proliferative activity is measured by various methods among which immunohistochemistry (IHC) is the commonly used technique. Most of the IHC studies on cell proliferation have been based on antibodies such as Ki-67 and proliferating cell nuclear antigen. In the present study, the total sample size comprised of 45 cases of odontogenic cysts, with 15 cases each of OKC, RC and DC. Here, an attempt is made to study immunohistochemical (streptavidin-biotin detection system HRP-DAB) method to assess the expression of Ki-67 in different layers of the epithelial lining of OKCs, RCs and DCs. Ki-67 positive cells were highest in epithelium of OKC as compared to DC and RC. The increased Ki-67 labeling index and its expression in suprabasal cell layers of epithelial lining in OKC and its correlation with suprabasal cell layers of epithelial lining in DC and RC could contribute toward its clinically aggressive behavior. OKC is of more significance to the oral pathologist and oral surgeon because of its specific histopathological features, high recurrence rate and aggressive behavior.

  14. Radiographic prevalence of root canal ramifications in a sample of root canal treatments in a Brazilian Dental School Prevalência radiográfica de ramificações do canal radicular em uma amostra de tratamentos endodônticos em uma Faculdade de Odontologia Brasileira

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    Iadasa de Quadros

    2007-06-01

    Full Text Available The aim of this study was to radiographically investigate the presence of root canal ramifications found after endodontic treatment, and to determine any relationship between their presence and the type of the auxiliary chemical substance used. The study evaluated 1,470 endodontic treatments performed by final year undergraduate students at the Dental School of Piracicaba, State University of Campinas (UNICAMP, SP, Brazil, during the period from 1998 to 2000. The X-rays taken during treatment were evaluated in order to establish the presence of ramifications of the root canal system. The initial X-ray did not show the presence of any canal ramifications. After filling, X-rays showed only 3 ramification types: 3.06% of lateral canals, 2.99% of apical deltas, and 0.1% of interradicular canals. The maxillary premolars showed the highest number of lateral canals (n = 13, followed by mandibular premolars (n = 10 and maxillary incisors (n = 10. Apical deltas were mostly found in mandibular molars (n = 14, followed by maxillary incisors (n = 9. Only mandibular molars had interradicular canals. The detection of ramifications increased with the use of EDTA. However, no statistically significant relationship was found between the type of auxiliary chemical substance used and the number of root canal ramifications detected after root canal filling. It was concluded that the frequency of root canal ramifications found radiographically was low in treatments performed by undergraduate students.O objetivo deste estudo foi investigar radiograficamente a presença de ramificações do canal radicular encontrada depois do tratamento endodôntico, e determinar qualquer relação entre a presença destas e do tipo de substância química auxiliar usada. O estudo avaliou 1.470 tratamentos endodônticos executados pelos estudantes do último ano da Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas (UNICAMP, SP, Brasil, no período de 1998 a

  15. A Comparative Analysis of Cytokeratin 18 and 19 Expressions in Odontogenic Keratocyst, Dentigerous Cyst and Radicular Cyst with a Review of Literature

    Science.gov (United States)

    Shah, Vandana Sandip; Ghanchi, Mohsin Jiva; Gosavi, Sandesh Sachchidanand; Srivastava, Himanshu Mahesh; Pachore, Nivedita Javahir

    2016-01-01

    Introduction Odontogenic cysts viz Odontogenic Keratocyst (OKC), Dentigerous Cyst (DC) and Radicular Cyst (RC) occur commonly in the oral and maxillofacial region. Cytokeratin (CK) expression studies have been done to evaluate diagnostic accuracy, role in pathogenesis, elucidate behaviour and role in treatment protocols. However, variations have been reported in the expression of CK patterns in these odontogenic cysts, which could be due to the lack of standardization of laboratory techniques. The present study has tried to shed light on CK 18 and 19 expression in odontogenic cysts and offer the brief review of previous studies on these CK. Aim The aim of the present study was to evaluate the intensity and expression patterns of CK 18 and 19 in OKCs, DCs and RCs. Materials and Methods A total of 60 cases, 20 each of OKC, DC and RC were confirmed histologically and evaluated for immunohistochemical expression pattern and intensity of CK 18 and 19. Results A focal and variable expression of CK 18 was observed in 25% of OKCs, 15% of DCs and 10% of RCs. CK 19 was expressed in 75% of OKCs and 100% in DCs as well as RCs. Conclusion The intensity and expression of Cytokeratin 19 was more in all three cysts compared to Cytokeratin 18. PMID:27630961

  16. Legislation and Identification of Irradiated Foodstuffs; Reglementation et Identification des Denrees Irradiees; Zakonodatel'stvo po obluchennym pishchevym produktam i metody ikh identifikatsii; Legislacion y'Identificacion de los Alimentos Irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Lafontaine, A. [Institut d' Hygiene et d' Epidemiologie, Ministere de la Sante Publique, Bruxelles (Belgium)

    1966-11-15

    .Un inventaire des methodes qu'on peut envisager montre la multiplicite des modes d'approche de la question: mesure de l'etat paramagnetique de l'atome, electrophorese, mesure du potentiel d'oxydoreduction, polarographie, spectrophotometrie, chromatographie, colorimetrie, examen microscopique des tissus, modifications immunologiques, microbiologie, modification du materiel d'emballage et modification des caracteres organoleptiques. Jusqu'a present, la spectrophotometrie, la chromatographie, l'electrophorese, les modifications du potentiel d'oxydo-reduction et le dosage de certains produits d'oxydation paraissent les plus prometteurs. Des recherches importantes restent necessaires; elles doivent tenir compte de divers imperatifs: - la methode doit etre aussi specifique que possible, qualitative et, si possible, quantitative; - les resultats doivent provenir d'essais menes parallelement sur des produits irradies, sur des produits non traites et sur des produits conserves par d'autres procedes; - les essais doivent etre etendus dans le temps au moins aussi longtemps que dure la conservation habituelle des denrees avant leur consommation pour se rendre compte si les modifications eventuellement observees se maintiennent, s'accentuent ou disparaissent; - enfin, la methode doit etre aussi universelle que possible, compte tenu de la gamme de denrees pouvant etre irradiees, des modes d'irradiation et des doses utilisees. (author) [Spanish] Las investigaciones sobre irradiacion de alimentos, que al principio tenian un interes puramente militar, han llegado a interesar al sector civil; pronto se procedera a la comercializacion de esos productos irradiados: el principal elemento del conjunto de argumentos aducidos en pro o en contra de tal procedimiento debe ser la proteccion de la salud del consumidor. En vista de las incognitas que impiden formular un juicio definitivo sobre el problema considerado en su totalidad. Belgica ha preferido adoptar el principio de la prohibicion, sin

  17. Colonização micorrízica e nodulação radicular em mudas de sabiá (Mimosa caesalpiniaefolia Benth. sob diferentes níveis de salinidade Mycorrhizal colonization and root nodulation in sabiá seedlings (Mimosa caesalpiniaefolia Benth. at different salinity levels

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    Rodrigo Castro Tavares

    2012-09-01

    Full Text Available O sabiá (Mimosa caesalpiniaefolia Benth. é uma espécie vegetal nativa do nordeste brasileiro e reúne algumas características fundamentais para compor programas de reabilitação de áreas salinizadas, principalmente quanto associado aos fungos micorrízicos arbusculares (FMAs e a bactérias fixadoras de nitrogênio (BFN. O objetivo do presente estudo foi avaliar a colonização micorrízica e a nodulação radicular de mudas de sabiá adubadas com composto orgânico e irrigadas com águas de diferentes condutividades elétricas. O experimento foi conduzido em casa de vegetação, com delineamento experimental inteiramente casualizado, em esquema fatorial com 2 (presença e ausência de fungos micorrízicos arbusculares x 2 (presença e ausência de composto orgânico x 5 níveis de condutividade elétrica da água de irrigação (0,7; 1,2; 2,2; 3,2 e 4,2 dS m-1, com 3 repetições. Os resultados obtidos indicam que: a salinidade reduziu a colonização micorrízica e a nodulação radicular das mudas de sabiá; a intensificação das condições de estresse salino aumentaram a dependência micorrízica das mudas de sabiá; a colonização das mudas de sabiá com os FMAs proporcionou aumentos na matéria seca dos nódulos radiculares da ordem de 1900%; as micorrizas arbusculares reduziram o pH após o cultivo do solo; e a adição de vermicomposto não promoveu efeito sobre a colonização micorrízica das mudas de sabiá, entretanto, aumentou a produção de matéria seca dos nódulos radiculares.The sabiá (Mimosa caesalpiniaefolia Benth. is a plant species native to the Brazilian northeast and brings together some fundamental features for use in rehabilitation programs of salinized areas, especially if associated with arbuscular mycorrhizal fungi (AMF and nitrogen-fixing bacteria (BFN. The aim of this study was to evaluate the mycorrhizal colonization and root nodulation of sabiá seedlings fertilized with organic compost and irrigated

  18. Delayed tooth replantation after root surface treatment with sodium hypochlorite and sodium fluoride: histomorphometric analysis in rats Reimplante dentário tardio após o tratamento da superfície radicular com hipoclorito de sódio e fluoreto de sódio: análise histomorfométrica em ratos

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    André Dotto Sottovia

    2006-04-01

    Full Text Available In cases of delayed tooth replantation, non-vital periodontal ligament remnants have been removed with sodium hypochlorite in an attempt to control root resorption. Nevertheless, reports of its irritating potential in contact with the alveolar connective tissue have been described. Therefore, this study evaluated the healing process on delayed replantation of rat teeth, after periodontal ligament removal by different treatment modalities. Twenty-four rats, assigned to 3 groups (n=8, had their upper right incisor extracted and left on the workbench for desiccation during 60 min. Afterwards, the teeth in group I were immersed in saline for 2 min. In group II, root surfaces were scrubbed with gauze soaked in saline for 2 min; and in group III, scrubbing was done with gauze soaked in 1% sodium hypochlorite solution. Thereafter, root surfaces were etched with 37% phosphoric acid and immersed in 2% acidulate-phosphate sodium fluoride solution, at pH 5.5. Root canals were filled with a calcium hydroxide-based paste and the teeth were replanted. The animals were sacrificed 60 days postoperatively and the pieces containing the replanted teeth were processed and paraffin- embedded. Semi-serial transversally sections were obtained from the middle third of the root and stained with hematoxylin and eosin for histomorphometric analysis. Data were analyzed statistically using Kruskal-Wallis and Dunn's tests. The results showed that root structure and cementum extension were more affected by resorption in group III (pEm reimplante dentário tardio, o ligamento periodontal desvitalizado tem sido removido empregando-se o hipoclorito de sódio, buscando o controle da reabsorção radicular. Relatos de efeito irritante no tecido conjuntivo alveolar após o seu uso, têm sido descritos. Isso justificou a realização deste trabalho buscando minimizar esse inconveniente. Para isso 24 ratos, divididos em 3 grupos de 8 animais, tiveram o incisivo superior direito extra

  19. Nuclear magnetic resonance therapy in lumbar disc herniation with lumbar radicular syndrome: effects of the intervention on pain intensity, health-related quality of life, disease-related disability, consumption of pain medication, duration of sick leave and MRI analysis.

    Science.gov (United States)

    Salfinger, H; Salomonowitz, G; Friedrich, K M; Hahne, J; Holzapfel, J; Friedrich, M

    2015-06-01

    The objective was to assess the effects of therapeutic nuclear magnetic resonance (tNMR) as a conservative treatment for lumbar radicular syndrome (LRS) in patients with lumbar disc herniation. The prospective, randomised, double-blind, placebo-controlled trial included 94 patients, aged 20-60 years (44.79 ± 8.83), with LRS caused by lumbar disc herniation confirmed by MRI scans and with clinical signs of a radicular lesion without indication for surgical intervention. Treatment group (TG) and control group (CG) received standard non-surgical therapy. Additionally, the TG had seven sessions with the tNMR device with a magnetic flux density of 2.3 mT and a frequency of 85 kHz; the CG received 7 sham treatments. Outcome parameters were the treatment effect on pain intensity (Visual Analogue Scale-VAS), health-related quality of life (36-item Short Form Health Survey-SF-36), disease-related disability (Roland Morris Disability Questionnaire-RMDQ), pain medication intake, duration of sick leave and morphological changes assessed by MRI scan analysis. VAS scores improved significantly in both groups (p Patients in the TG recorded significantly fewer days of sick leave in month 3 after treatment (p = 0.026). MRI scan summary scores improved significantly in both groups (L4/5 p treatment of lumbar disc herniation with LRS. The application of tNMR did not meet MCID criteria. It rendered few statistically significant differences between patient groups. The overall results of this trial make a clinical implementation of tNMR in the treatment of lumbar disc herniation with LRS appear premature. Further research is needed to better understand the mode of action of tNMR on compressed neural tissue and to elucidate the issue of the cost/benefit ratio.

  20. Anatomia radicular de milho em solo compactado Anatomy of maize roots in compacted soil

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    Anderson Cristian Bergamin

    2010-03-01

    Full Text Available O objetivo deste trabalho foi avaliar a relação entre a estrutura anatômica das raízes de milho e os atributos físicos de solo submetido a diferentes graus de compactação. O estudo foi realizado em campo, no Município de Dourados, MS, em Latossolo Vermelho distroférrico, textura muito argilosa. O delineamento experimental foi o de blocos ao acaso, com cinco repetições. O solo utilizado apresentava histórico de oito anos com plantio direto. A compactação adicional do solo foi realizada por meio de tráfego com trator, com uma (PDc1, duas (PDc2, quatro (PDc4 e seis passadas (PDc6 sucessivas, sobre toda a área da parcela. Houve aumento na razão entre o córtex e o cilindro vascular da raiz com o aumento na compactação do solo. Essa razão correlacionou-se negativamente com a macroporosidade e positivamente com a densidade do solo e com a resistência do solo à penetração. O grau de compactação afeta a anatomia radicular do milho, e a resistência do solo à penetração é o indicador físico que melhor expressa esse efeito.The objective of this work was to evaluate the relationship between maize root anatomy and physical attributes of soil subjected to levels of compaction. The experiment was carried out in field conditions, in Dourados, Mato Grosso do Sul state, Brazil, in a clayed Latossolo Vermelho (Rhodic Acrustox. A randomized complete block design was used, with five replicates. The soil was cultivated for eight years under no-tillage. The additional compaction of the soil was done by tractor traffic in one (PDc1, two (PDc2, four (PDc4 and six successive passes (PDc6, in the entire area of the experimental plots. Ratio between the cortex and vascular cylinder of the root increased with soil compaction. This ratio was negatively correlated to macroporosity, and positively to soil density and soil penetration resistance. Soil compaction level affects the anatomy of maize roots, and its penetration resistance is the best

  1. Analysis of CD57+ natural killer cells and CD8+ T lymphocytes in periapical granulomas and radicular cysts.

    Science.gov (United States)

    Silva, Luiz Arthur Barbosa da; Sá, Maria Alice Ramalho; Melo, Rafaela Albuquerque; Pereira, Joabe Dos Santos; Silveira, Éricka Janine Dantas da; Miguel, Márcia Cristina da Costa

    2017-12-18

    The aim of this study was to compare the number of CD57+ natural killer (NK) cells and CD8+ T lymphocytes between periapical granulomas (PGs) and radicular cysts (RCs). Twenty-fives cases of PGs and 25 of RCs were submitted to histological analysis and immunohistochemistry using anti-CD57 and anti-CD8 biomarkers. Positive cells were counted in 10 fields (400× magnification) and the median value was calculated for each case. Statistical tests were used to evaluate differences in the number of CD57+ NK cells and CD8+ T lymphocytes according to type of lesion, intensity of the infiltrate and thickness of the lining epithelium. The number of CD57+ NK cells and CD8+ T lymphocytes was higher in PGs than in RCs (p = 0.129 and p = 0.541, respectively). Comparison of the number of CD57+ NK cells in atrophic and hyperplastic epithelium revealed a larger number of cells in the atrophic epithelium (p = 0.042). A larger number of CD57+ NK cells and CD8+ T lymphocytes were observed in grade III infiltrates compared to grade I/II (p = 0.145 and p = 0.725, respectively). CD8+ T lymphocytes were more prevalent than CD57+ NK cells in most cases when PGs and RCs were analyzed separately or in combination (p < 0.0001). CD57+ NK cells and CD8+ T lymphocytes play a key role in antiviral defense and the presence of these cells supports evidence suggesting the participation of these microorganisms in the pathogenesis of PGs and RCs. The response mediated by CD8+ T lymphocytes was more frequent, indicating greater participation of the adaptive immunity in these chronic lesions.

  2. Analysis of CD57+ natural killer cells and CD8+ T lymphocytes in periapical granulomas and radicular cysts

    Directory of Open Access Journals (Sweden)

    Luiz Arthur Barbosa da Silva

    2017-12-01

    Full Text Available Abstract: The aim of this study was to compare the number of CD57+ natural killer (NK cells and CD8+ T lymphocytes between periapical granulomas (PGs and radicular cysts (RCs. Twenty-fives cases of PGs and 25 of RCs were submitted to histological analysis and immunohistochemistry using anti-CD57 and anti-CD8 biomarkers. Positive cells were counted in 10 fields (400× magnification and the median value was calculated for each case. Statistical tests were used to evaluate differences in the number of CD57+ NK cells and CD8+ T lymphocytes according to type of lesion, intensity of the infiltrate and thickness of the lining epithelium. The number of CD57+ NK cells and CD8+ T lymphocytes was higher in PGs than in RCs (p = 0.129 and p = 0.541, respectively. Comparison of the number of CD57+ NK cells in atrophic and hyperplastic epithelium revealed a larger number of cells in the atrophic epithelium (p = 0.042. A larger number of CD57+ NK cells and CD8+ T lymphocytes were observed in grade III infiltrates compared to grade I/II (p = 0.145 and p = 0.725, respectively. CD8+ T lymphocytes were more prevalent than CD57+ NK cells in most cases when PGs and RCs were analyzed separately or in combination (p < 0.0001. CD57+ NK cells and CD8+ T lymphocytes play a key role in antiviral defense and the presence of these cells supports evidence suggesting the participation of these microorganisms in the pathogenesis of PGs and RCs. The response mediated by CD8+ T lymphocytes was more frequent, indicating greater participation of the adaptive immunity in these chronic lesions.

  3. Sistema radicular de plantas cítricas e atributos físicos do solo em um Latossolo argiloso submetido à escarificação

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    Bordin Ivan

    2005-01-01

    Full Text Available O trabalho teve como objetivo avaliar a influência da escarificação sobre atributos físicos do solo e sobre a distribuição do sistema radicular do limão ?Cravo? (Citrus limonia Osb sob copa de laranja ?Pêra? (Citrus sinensis L. Osb. Foram abertas quatro trincheiras para cada tratamento (entrelinha escarificada e entrelinha não escarificada avaliando-se distribuição das raízes na linha e entrelinha até a profundidade de 1,0 m pelo Sistema Integrado de Análise de Raízes e Cobertura do Solo (SIARCS 3.0. A porosidade total e a densidade do solo foram avaliadas em três profundidades (0,000-0,125; 0,125-0,250 e 0,25-0,375 m em três posições: linha, centro da entrelinha e limite da copa na entrelinha. Três anos depois da escarificação não se detectou alteração para a densidade e a porosidade total do solo nas entrelinhas do pomar e a quantidade de raízes, independentemente da profundidade e posição em relação à planta.

  4. Sustained Local Release of Methylprednisolone From a Thiol-Acrylate Poly(Ethylene Glycol) Hydrogel for Treating Chronic Compressive Radicular Pain.

    Science.gov (United States)

    Slotkin, Jonathan R; Ness, Jennifer K; Snyder, Kristin M; Skiles, Amanda A; Woodard, Eric J; OʼShea, Timothy; Layer, Rick T; Aimetti, Alex A; Toms, Steven A; Langer, Robert; Tapinos, Nikos

    2016-04-01

    A preclinical animal model of chronic ligation of the sciatic nerve was used to compare the effectiveness of a slow-release hydrogel carrying methylprednisolone to methylprednisolone injection alone, which simulates the current standard of care for chronic compressive radiculopathy (CR). To extend the short-term benefits of steroid injections by using a nonswelling, biodegradable hydrogel as carrier to locally release methylprednisolone in a regulated and sustained way at the site of nerve compression. CR affects millions worldwide annually, and is a cause of costly disability with significant societal impact. Currently, a leading nonsurgical therapy involves epidural injection of steroids to temporarily alleviate the pain associated with CR. However, an effective way to extend the short-term effect of steroid treatment to address the chronic component of CR does not exist. We induced chronic compression injury of the sciatic nerves of rats by permanent ligation. Forty-eight hours later we injected our methylprednisolone infused hydrogel and assessed the effectiveness of our treatment for 4 weeks. We quantified mechanical hyperalgesia using a Dynamic Plantar Aesthesiometer (Ugo Basile, Stoelting Co., IL, USA), whereas gait analysis was conducted using the Catwalk automated gait analysis platform (Noldus, Leesburg, VA, USA). Macrophage staining was performed with immunohistochemistry and quantification of monocyte chemoattractant protein-1 in sciatic nerve lysates was performed with multiplex immunoassay using a SECTOR Imager 2400A (Meso Scale Discovery, Rockville, MA, USA). We demonstrate that using the hydrogel to deliver methylprednisolone results in significant (P pain in an animal model of chronic CR. Our steroid-infused hydrogel could be an effective extender of the short-term benefits of epidural steroid injections for patients with chronic compression-induced radicular pain. N/A.

  5. A posterior approach to cervical nerve root block and pulsed radiofrequency treatment for cervical radicular pain: a retrospective study.

    Science.gov (United States)

    Xiao, Lizu; Li, Jie; Li, Disen; Yan, Dong; Yang, Jun; Wang, Daniel; Cheng, Jianguo

    2015-09-01

    Catastrophic complications have been reported for selective cervical nerve root block (SCNRB) or pulsed radiofrequency (PRF) via an anterolateral transforaminal approach. A posterior approach to these procedures under computed tomography guidance has been reported. Here, we report the clinical outcomes of 42 patients with chronic cervical radicular pain (CCRP) treated with a combination of SCNRB and PRF through a posterior approach under fluoroscopy guidance. We retrospectively reviewed the clinical outcomes of 42 consecutive patients with CCRP who received a combination of SCNRB and PRF through a posterior approach under fluoroscopy guidance. The thresholds of electrical stimulation and imaging of the nerve roots after contrast injection were used to evaluate the accuracy of needle placement. The numeric rating scale was used to measure the pain and numbness levels as primary clinical outcomes, which were evaluate in scheduled follow-up visits of up to 3 months. A total of 53 procedures were performed on 42 patients at the levels of C5-C8. All patients reported concordant paresthesia in response to electrical stimulation. The average sensory and motor thresholds of stimulation were 0.28 ± 0.14 and 0.36 ± 0.14 V, respectively. Injection of nonionic contrast resulted in excellent spread along the target nerve root in large majority of the procedures. The numeric rating scale scores for both pain and numbness improved significantly at 1 day, 1 week, and 1 and 3 months after the treatment. No serious adverse effects were observed in any of the patients. The posterior approach to combined SCNRB and PRF under fluoroscopy guidance appears to be safe and efficacious in the management of CCRP. Copyright © 2015 Elsevier Inc. All rights reserved.

  6. Evaluación de la capacidad estacional de utilizar eventos de precipitación en tres especies de arbustos nativos de Chile con distintos sistemas radiculares Assessment of the seasonal ability to use precipitation events in three native Chilean shrubs species with different root systems

    Directory of Open Access Journals (Sweden)

    RAUL TORRES

    2002-12-01

    Full Text Available Se evaluó la capacidad estacional de utilizar un evento de precipitación en tres especies arbustivas con diferentes sistemas radiculares (dimórficos: Balbisia peduncularis, Senna cumingii; profundo: Haplopappus parvifolius en la Quebrada El Romeral, norte-centro de Chile. El sitio posee un clima tipo mediterráneo árido con influencia de neblinas costeras y una precipitación promedio anual de 78 mm en los últimos 30 años. La utilización de precipitación artificial (i.e., 25 mm en otoño, invierno y primavera por parte de las plantas se estimó por la composición de isótopos de hidrógeno (delta²H en el agua del xilema y los potenciales hídricos de pre-alba (psipa antes y después del riego. Los resultados indican que las tres especies utilizan una mezcla de dos fuentes de agua (agua superficial proveniente de las precipitaciones, y en mayor proporción, agua subterránea. A excepción de invierno, sólo las especies de sistemas radiculares dimórficos son capaces de reducir su déficit hídrico después de la aplicación de la precipitación artificial. La reducción en las precipitaciones observada en los últimos 100 años afectaría diferencialmente la productividad de las especies con sistema radicular dimórfico, y en especial al arbusto forrajero Balbisia peduncularis.Seasonal ability to use precipitation by three shrub species with different root systems (dimorphic: Balbisia peduncularis and Senna cummingii; deep: Haplopappus parvifolius was evaluated in Quebrada El Romeral, north-central Chile. The site has an arid Mediterranean climate with coastal fog influence and an annual mean precipitation of 78 mm during the last 30 years. The use of artificial rain (i.e., 25 mm in fall, winter and spring by plants was estimated by the hydrogen isotope composition (delta²H in the xylem water and the pre-dawn water potentials (psipa before and after watering. The results show that the three species use a mixture of two water sources

  7. Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands Calcário e gesso no aprofundamento radicular da laranjeira em um Argissolo dos Tabuleiros Costeiros

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    Lafayette F. Sobral

    2009-12-01

    Full Text Available Coastal Tableland is a landscape unit in the North East of Brazil in which the main soils are Ultisols. In these soils, a compacted layer denominated "cohesive horizon" occurs and root growth is limited by it. An experiment with five treatments and six replications was set up in order to study how liming and gypsum could improve root depth of orange (Citrus sinensis L. Osbeck crop in an Ultisol in which a compacted layer was found at 0.3 m. Treatments were: A - No liming and no gypsum; B - Liming to achieve 60% base saturation; C - B + 1 t of gypsum ha-1 ; D - B + 2 t of gypsum ha-1 and E - B + 3 t of gypsum ha-1. Gypsum increased calcium and sulfate in the cohesive horizon. Surface application of lime and gypsum did not cause changes in soil density and total porosity in the cohesive horizon. An improvement of root length was observed at the cohesive horizon.Os tabuleiros costeiros são uma unidade de paisagem em que um dos principais solos são os Argissolos, nos quais, uma camada compactada, denominada "horizonte coeso" ocorre e o crescimento radicular é por ela limitado. Um experimento com cinco tratamentos e seis repetições foi implantado para se estudar os efeitos da calagem e do gesso no aprofundamento radicular da laranjeira (Citrus sinensis L. Osbeck em um Argissolo onde o horizonte coeso está a 0,3 m de profundidade. Os tratamentos foram: A - Sem gesso e sem calagem; B - Calagem para atingir 60% de saturação por bases; C - B + 1 t ha-1 de gesso ; D - B + 2 t ha-1 de gesso; e E - B + 3 t ha-1 de gesso. A calagem e o gesso aumentaram significativamente os teores de sulfato e de calcio no solo até a profundidade de 0,40 m. A aplicação a lanço de calcário e gesso não causaram modificações na densidade do solo e na porosidade total da camada compactada "horizonte coeso". Foi observado um aumento do comprimento das raízes da laranjeira na camada compactada.

  8. Descontaminación del ingrediente farmacéutico activo de Rhizophora mangle L. mediante radiaciones ionizantes

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    Yanet Rodríguez Perdomo

    2011-12-01

    Full Text Available El objetivo del presente trabajo fue determinar la dosis de radiación gamma eficaz para descontaminar el extracto seco de corteza de Rhizophora mangle L. (mangle rojo. Se obtuvieron 3 lotes de este ingrediente farmacéutico activo secado en un Spray dryer y se irradiaron en una instalación Gammacell-500 con una tasa de dosis de 6,26 kGy/h, evaluando 3 dosis (3, 5 y 8 kGy. El control del proceso de irradiación se realizó empleando dosímetros de sulfato cérico. Se determinó el límite microbiano y el contenido de taninos de cada lote del ingrediente farmacéutico activo irradiado a las diferentes dosis probadas. A partir de los resultados obtenidos se alcanzó una reducción de 2 ciclos de desarrollo logarítmico de los lotes irradiados a las dosis de 5 y 8 kGy, con respecto a la carga contaminante inicial y la concentración de taninos de los lotes irradiados a diferentes dosis se mantuvo dentro de los límites de especificación, sin diferir respecto al producto no tratado. Se estableció 5 kGy como dosis de descontaminación del ingrediente farmacéutico activo seco de mangle rojo, de esta manera se logra garantizar un producto conforme para la obtención de nuevos preparados farmacéuticos.

  9. Retention of radicular posts varying the application technique of the adhesive system and luting agent Retenção de pinos radiculares variando-se a técnica de aplicação do sistema adesivo e do agente cimentante

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    Tabajara Sabbag Fonseca

    2006-12-01

    Full Text Available This study evaluated in vitro the retention of intracanal cast posts cemented with dual-cure resin varying the application method of the primer/adhesive solution and luting agent in the prosthetic space prepared to receive the posts. Sixty endodontically treated maxillary canines had their crowns discarded, and their roots were embedded in acrylic resin. The prosthetic spaces were prepared with Largo burs mounted on a low-speed handpiece coupled to a parallelometer in order to maintain length and diameter of intraradicular posts constant and to guarantee that the preparations were parallel after casting. Two groups (n = 30 were randomly formed according to the device used to apply the adhesive system: microbrush or standard bristle brush (control. Each group was divided into 3 subgroups (n = 10 according to the technique used to place the luting agent into the root canal: using only a lentulo spiral before setting the post, applying it onto the post surface, or combining both methods. After 72 hours, the tensile force required to dislodge each post was determined by a universal testing machine (Instron 4444 set at a speed of 1 mm/min. The results indicated that the use of the microbrush yielded higher bond strength values (0.1740 ± 0.04 kN than those recorded for the bristle brush tip (0.1369 ± 0.04 kN, p O objetivo deste trabalho foi avaliar in vitro a retenção de pinos intra-radiculares variando-se a técnica de aplicação do agente adesivo e do cimento resinoso dual no espaço protético preparado para a recepção do pino. Sessenta caninos superiores tratados endodonticamente tiveram as coroas descartadas e as raízes incluídas em resina acrílica. Os espaços protéticos foram preparados com broca de Largo acionada por micromotor acoplado a um paralelômetro, a fim de manter constantes o comprimento e diâmetro dos pinos intra-radiculares e o paralelismo dos preparos após a fundição. Os pinos foram divididos aleatoriamente em 2

  10. Precisão e confiabilidade de um localizador apical na odontometria de molares inferiores: estudo in vitro = Accuracy and reliability of an apex locator for working length determination of lower molars: an in vitro study

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    Brito-Júnior, Manoel

    2007-01-01

    Full Text Available O presente estudo in vitro teve por objetivo avaliar a precisão e a confibialidade de um modelo de localizador apical eletrônico (LAE na obtenção do comprimento de trabalho (CT em molares inferiores. Após adequado acesso endodôntico e manobras iniciais de exploração em 20 dentes, mediu-se com uma lima K # 10 o comprimento dos condutos mésio-vestibular (MV e distal (D até o forame apical, subtraindo-se 1 mm (CT1, tendo como referências externas as cúspides mésio-vestibular e disto-vestibular, respectivamente. Os dentes foram fixados em recipientes plásticos contendo alginato procedendo-se as medidas eletrônicas com o LAE Novapex (Fórum,Israel. Limas K # 10 foram inseridas nos canais MV e D até que os instrumentos atingissem a marca 0 no visor do aparelho e posteriormente realizava-se o recuo até a marca 1, ajustando-se os cursores nas mesmas referências externas do CT1. As mensurações com o LAE foram realizadas em triplicata, adotando-se a média das medidas, por dois operadores calibrados, um estudante de gradução (CT2 e um especialista em endodontia (CT3. O coeficiente de correlação linear de Pearson revelou alta concorcândia inter–operadores e intraoperadores. Para comparação do CT1, CT2 e CT3 foi aplicado o Teste t de Student para amostras pareadas (p < 0,05, que não mostrou diferenças significativas entre todas as medidas odontométricas para os canais radiculares MV (p = 0,22 e D (p = 0,94. Portanto, o LAE testado mostrou-se preciso e confiável na determinação da odontometria de molares inferiores

  11. Analysis of the Volatile Constituents of Irradiated Apple Juice; Analyse des Constituants Volatils des Jus de Pommes Irradies; Mezhdunarodnyj proekt po oblucheniyu fruktov i fruktovykh sokov; Analisis de los Componentes Volatiles de los Zumos de Manzana Irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Dubois, P.; Zenz, H.; Stehlik, G.; Kaindl, K. [Agence Europeenne pour l' Energie Nucleaire, Seibersdorf (Austria)

    1966-11-15

    Degree-Sign C (Head Space Technique de Weurman). Les identifications ont ete faites par comparaison des volumes de retention avec ceux de substances pures, et a l'aide de reactifs chimiques permettant d'eliminer certains constituants de la vapeur. Pour simplifier les analyses, les premiers essais ont porte sur des concentres de jus de pommes ne contenant plus de substances volatiles avant irradiation. Par irradiation, cinq aldehydes prennent naissance dans les jus de pommes: acetaldehyde, isobutyraldehyde, butyraldehyde, isovaleraldehyde et capronaldehyde; mais trois seulement dans les jus concentres; acetaldehyde, isobutyraldehyde et isovaleraldehyde. De plus, la 2-butanone apparait dans les jus concentres, mais le pic qui lui correspond sur les chroma- togrammes est entierement masque par celui de l'ethanol dans le cas des jus non concentres. Par ailleurs on a mis en evidence les formations de furane et de deux composes qui n'apparaissent qu'a l'etat de traces et qui n'ont pas pu etre identifies a ce jour. Des resultats analogues ont ete obtenus par pasteurisation, telle qu'elle est realisee par embouteillage a chaud. (author) [Spanish] Los estudios organolepticos y los ensayos de inocuidad que se realizan dentro del marco del proyecto internacional de investigaciones sobre la conservacion de frutas y zumos de fruta por irradiacion (Seibersdorf) hacen indispensable el analisis de las sustancias aromaticas de los zumos irradiados y no irradiados. Las sustancias volatiles de los zumos de manzana irradiados han sido analizados por cromatografia en fase gaseosa, inyectando directamente los vapores que emiten a la temperatura ambiente y a 60 Degree-Sign C (tecnica 'Head Space' , de Weurman). Las identificaciones se han efectuado comparando los volumenes de retencion con los de sustancias puras y eliminando ciertos constituyentes del vapor con reactivos quimicos. Para simplificar los analisis, los primeros ensayos se han efectuado con concentrados de zumos de manzana que no

  12. Cirurgia coronária com condutos arteriais múltiplos sem circulação extracorpórea Off-pump coronary artery bypass with multiple arterial conduits

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    Daniel Navia

    2005-03-01

    circulação extracorpórea utilizando condutos arteriais para a doença de múltiplos vasos é factível com baixa morbimortalidade em 30 dias.OBJECTIVE: To analyze intra-hospital results in patients undergoing elective off-pump total arterial revascularization and identify morbidity and mortality predictors using this surgical strategy. METHOD: From May 1999 to February 2004, 203 myocardial revascularization procedures with total arterial revascularization without cardiopulmonary bypass (off-pump were carried out in patients with multivessel disease (three vessels 81.7 %, one vessel disease was excluded. We report pre-surgical variables and co-morbidities: average age 63.9 ± 9.13 years, men 182 (89.5%, hypertension 132 (65%, smokers 125 (61%, hypercholesterolemia 152 (74.8%, previous myocardial infarction (> 30 days 73 (35%, moderate to severe ventricular dysfunction 31 (15%, redo five (2.5%. Total arterial revascularization included T-grafts and sequential grafts with left internal mammary (100%, right internal mammary (56.6% and radial (63% arteries. The total number of distal anastomosis was 576 (mean of three grafts/patient, all carried out with external mechanical stabilizers. There were no proximal aortic anastomoses. Conversion to on-pump surgery occurred in three (1.5% patients; 90% of the patients was extubated in the operating room. The multiple logistic regression test was used for statistical analysis. RESULTS: The postoperative incidence of atrial fibrillation was 12.8% (26, oligoanuric renal failure 3% (six, dialysis 0.49% (one, postoperative myocardial infarction 1.47% (three, low cardiac output 4% (eight, Redo for bleeding 1.47% (three, mediastinitis 1.47% (three, stroke 1.47% (three. Intra-hospital mortality was 2.45% (five. The only independent 30 day morbidity predictor was age (p=0.033; OR 1.04; IC 95%: 1-1.08. CONCLUSION: Off-pump myocardial revascularization with arterial conduits for multiple vessel disease is feasible with a low 30-day morbidity

  13. BACTERIAL DETERIORANTS IN CHICKEN BREAST FILLET PACKAGED IN AIR, VACUUM AND IRRADIATED: BACTERIOLOGICAL GROWTH PARAMETERS AND SHELF-LIFE BACTÉRIAS DETERIORANTES EM FILÉS DE FRANGO EMBALADOS EM AR, VÁCUO E IRRADIADOS: PARÂMETROS BACTERIOLÓGICOS DE DESENVOLVIMENTO E PRAZO COMERCIAL

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    Samira Pirola Santos Mantilla

    2009-10-01

    frango resfriado, avaliando-se os parâmetros de desenvolvimento de bactérias deteriorantes e a variação do pH das amostras. A embalagem a vácuo aumentou o prazo de validade comercial, quando comparada à embalagem em 100% ar, tanto nos filés não irradiados, como nos irradiados a 3 kGy. A irradiação das amostras, nas duas doses utilizadas, aumentou, consideravelmente, a validade comercial desse alimento. As bactérias láticas foram os micro-organismos que mais se desenvolveram nas amostras irradiadas, confirmando, assim, uma maior radiorresistência, quando comparada com os outros micro-organismos estudados, enquanto as enterobactérias demonstraram maior sensibilidade ao tratamento com radiação ionizante. A embalagem a vácuo, combinada com a tecnologia de irradiação, pode ser utilizada para melhorar a segurança de filés de peito de frango resfriados e para estender seu prazo de validade comercial.

    PALAVRAS-CHAVE: Deterioração; carne de frango; embalagem a vácuo; radiação de carne; radiação gama.

  14. Avaliação da reabsorção radicular após a movimentação dentária induzida com forças contínua e contínua interrompida: análise histomorfométrica em ratos

    OpenAIRE

    Zamalloa, Yésselin Margot Miranda [UNESP

    2009-01-01

    Introdução: O propósito desta pesquisa foi avaliar a reabsorção radicular após o emprego de forças contínuas e forças contínuas interrompidas. Material e Métodos: Utilizou-se 60 ratos machos da raça Wistar divididos em dois grupos nos quais foram movimentados os primeiros molares superiores direitos com uma mola helicoidal de secção fechada de 3mm – Sentalloy- GAC, liberando 50cN de força. O Grupo I (GI) foi composto por 30 animais com Forças Contínuas (FC), Grupo II (GII), composto por 30 an...

  15. Accuracy of Clinical Tests in Detecting Disk Herniation and Nerve Root Compression in Subjects With Lumbar Radicular Symptoms.

    Science.gov (United States)

    Ekedahl, Harald; Jönsson, Bo; Annertz, Mårten; Frobell, Richard B

    2018-04-01

    To investigate the accuracy of 3 commonly used neurodynamic tests (slump test, straight-leg raise [SLR] test, femoral neurodynamic test) and 2 clinical assessments to determine radiculopathy (radiculopathy I, 1 neurologic sign; radiculopathy II, 2 neurologic signs corresponding to 1 specific nerve root) in detecting magnetic resonance imaging (MRI) findings (extrusion, subarticular nerve root compression, and foraminal nerve root compression). Validity study. Secondary care. We included subjects (N=99; mean age, 58y; 54% women) referred for epidural steroid injection because of lumbar radicular symptoms who had positive clinical and MRI findings. Positive clinical findings included the slump test (n=67), SLR test (n=50), femoral neurodynamic test (n=7), radiculopathy I (n=70), and radiculopathy II (n=33). Positive MRI findings included extrusion (n=27), subarticular nerve compression (n=14), and foraminal nerve compression (n=25). Not applicable. Accuracy of clinical tests in detecting MRI findings was evaluated using sensitivity, specificity, and receiver operating characteristics analysis with area under the curve (AUC). The slump test had the highest sensitivity in detecting extrusion (.78) and subarticular nerve compression (1.00), but the respective specificity was low (.36 and .38). Radiculopathy I was most sensitive in detecting foraminal nerve compression (.80) but with low specificity (.34). Only 1 assessment had a concurrent high sensitivity and specificity (ie, radiculopathy II) in detecting subarticular nerve compression (.71 and .73, respectively). The AUC for all tests in detecting extrusion, subarticular nerve compression, and foraminal nerve compression showed ranges of .48 to .60, .63 to .82, and .33 to .57, respectively. In general, the investigated neurodynamic tests or assessments for radiculopathy lacked diagnostic accuracy. The slump test was the most sensitive test, while radiculopathy II was the most specific test. Most interestingly, no

  16. Biomassa radicular, densidade do solo e análise química do solo de um povoamento de Pinus sp. / Root biomass, soil density and soil chemical analysis in a Pinus sp. plantition

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    Gerson Luiz Selle

    2010-04-01

    Full Text Available O sistema radicular é responsável direto pelo crescimento e sustentação das plantas, em especial das espécies florestais. As raízes finas (menor 2 mm, por sua vez, são as principais responsáveis pela absorção dos nutrientes necessários para o desenvolvimento e crescimento da planta. O gênero Pinus tem crescido em importância nos últimos anos em função de sua adaptabilidade a condições adversas do local, bem como sua grande versatilidade no que diz respeito à comercialização de sua madeira e demais produtos. O presente estudo teve como objetivo quantificar a biomassa de raízes finas e analisar alguns parâmetros edáficos em um povoamento de Pinus sp. plantado em Santa Maria (RS. A biomassa radicular e a densidade do solo foram avaliadas em seis profundidades de solo (0-10, 10-20, 20-30, 30-40, 40-50 e 50-60 cm e três posições: na linha de plantio; na entre linha de plantio; entre quatro plantas, em um povoamento de Pinus sp., com idade de sete anos, localizado em uma área pertencente à Universidade Federal de Santa Maria. A densidade do solo não apresentou diferença significativa ao longo do perfil do solo, não tendo, portanto, influência sobre os resultados de biomassa nas diferentes profundidades. A biomassa radicular encontrada no povoamento foi de 1606,3 kg ha-1 sendo que, 40,6% estavam nos primeiros dez centímetros do solo, diminuindo como o aumento da profundidade. Essa mesma tendência foi registrada para o teor de matéria orgânica, saturação por bases, bem como a quantidade de nutrientes, fatores estes que apresentaram estreita correlação com a quantidade de biomassa. Teor de alumínio e soma de bases aumentaram conforme o aumento da profundidade, mas apresentaram também uma estreita correlação com a biomassa. Os diferentes locais de coleta não diferiram estatisticamente entre si. AbstractThe root system is directly responsible for the growth and support of the plants, especially for the forests

  17. A case report of multiple cysts in the jaws

    International Nuclear Information System (INIS)

    Park, Tae Won; Lee, Sang Rae

    1973-01-01

    The authors have interpreted one patient's full mouth intra-oral films, oblique-lateral film of the left mandible and orthopantomograph which revealed 6 radicular and 1 residual cysts. As results of interpretation of these serial films, we have drawn following conclusions: 1. Radicular cyst arose from the cell rests contained in an apical granuloma which was sequel to advanced pulpitis due to dental caries. 2. Radicular cyst was developed from remaining cell rests after the extraction of a tooth with such a radicular cyst of apical dental granuloma. 3. Cyst grew in size by absorption of fluid into cystic cavity due to difference in osmotic pressure between the cystic fluid and adjacent tissue fluid.

  18. A case report of multiple cysts in the jaws

    Energy Technology Data Exchange (ETDEWEB)

    Park, Tae Won; Lee, Sang Rae [School of Dentistry, Seoul National University, Seoul (Korea, Republic of)

    1973-11-15

    The authors have interpreted one patient's full mouth intra-oral films, oblique-lateral film of the left mandible and orthopantomograph which revealed 6 radicular and 1 residual cysts. As results of interpretation of these serial films, we have drawn following conclusions: 1. Radicular cyst arose from the cell rests contained in an apical granuloma which was sequel to advanced pulpitis due to dental caries. 2. Radicular cyst was developed from remaining cell rests after the extraction of a tooth with such a radicular cyst of apical dental granuloma. 3. Cyst grew in size by absorption of fluid into cystic cavity due to difference in osmotic pressure between the cystic fluid and adjacent tissue fluid.

  19. A case report of multiple cysts in the jaws

    Energy Technology Data Exchange (ETDEWEB)

    Park, Tae Won; Lee, Sang Rae [School of Dentistry, Seoul National University, Seoul (Korea, Republic of)

    1973-11-15

    The authors have interpreted one patient's full mouth intra-oral films, oblique-lateral film of the left mandible and orthopantomograph which revealed 6 radicular and 1 residual cysts. As results of interpretation of these serial films, we have drawn following conclusions: 1. Radicular cyst arose from the cell rests contained in an apical granuloma which was sequel to advanced pulpitis due to dental caries. 2. Radicular cyst was developed from remaining cell rests after the extraction of a tooth with such a radicular cyst of apical dental granuloma. 3. Cyst grew in size by absorption of fluid into cystic cavity due to difference in osmotic pressure between the cystic fluid and adjacent tissue fluid.

  20. Predisposição genética, hereditariedade e reabsorções radiculares em Ortodontia: cuidados com interpretações precipitadas: uma análise crítica do trabalho de Al-Qawasmi et al Genetics predisposition, heredity and radicular resorption, in Orthodontics: cares with precipitated interpretations and a critical analysis of Al-Qawasmi´s work

    Directory of Open Access Journals (Sweden)

    Alberto Consolaro

    2004-05-01

    Full Text Available O trabalho de Al-Qawasmi et al.¹, publicado em março de 2003 pelo American Journal of Orthodontics and Dentofacial Orthopedics, procurou estabelecer uma predisposição genética para justificar as reabsorções dentárias em Ortodontia, mas apresentou algumas limitações metodológicas e equívocos na interpretação de seus resultados. A análise criteriosa deste artigo ressalta que, na maioria, estas limitações foram mencionadas e reconhecidas pelos autores na discussão do trabalho, mas o seu resumo e título foram muito taxativos e conclusivos. A linguagem de estudos genéticos nem sempre é familiar a todos os clínicos e isto também requer uma análise esclarecedora à luz de uma visão mais aplicada ao cotidiano ortodôntico. Referenciar ou citar este trabalho de Al-Qawasmi et al.¹, para afirmar de forma taxativa que se demonstrou a natureza hereditária das reabsorções dentárias em Ortodontia, pode denotar falta de conhecimento sobre o assunto ou uma leitura ou compreensão apenas do seu título. Ou ainda, a citação deste trabalho como prova definitiva de associação entre hereditariedade e reabsorções dentárias em Ortodontia pode traduzir também o desejo de excluir da prática clínica a responsabilidade de planejar de forma individualizada e detalhada cada tratamento com base no conhecimento das possibilidades e limitações técnicas oferecidas pela ciência ortodôntica, bem como nas suas bases biológicas, por exemplo, valorizando a morfologia radicular e da crista óssea alveolar e o papel dos cementoblastos na proteção da superfície radicular.The study published in the American Journal of Orthodontics and Dentofacial Orthopedics last March by Al-Qawasmi et al. tried to implicate dental resorption during orthodontic treatment to genetic predisposition. The methodology used, however, presents limitations and interpretative mistakes of the results. When analyzing the article sensibly, one is able to find that

  1. OCCURRENCY OF MALASSEZIA PACHYDERMATIS AND OTHER INFECTIOUS AGENTS AS CAUSE OF EXTERNAL OTITIS IN DOGS FROM RIO GRANDE DO SUL STATE, BRAZIL (1996/1997 Ocorrência de Malassezia pachydermatis e de outros agentes etiológicos de otite externa em cães no estado do Rio Grande do Sul, BR (1996-1997

    Directory of Open Access Journals (Sweden)

    Márcia de Oliveira Nobre

    2001-10-01

    Full Text Available The purpose of this work was to evaluate the frequency of Malassezia pachydermatis infection and other infectious agents in dogs with external otitis and with healthy auditory tubes. Clinical manifestations of external otitis were evaluated. Samples from the auditory tube of 102 dogs with otitis and from 32 healthy dogs were submitted to direct microscopic examination and cultured in blood agar and Sabouraud dextrose agar with chloramphenicol and cycloheximide. Direct examination showed more than ten cells of M. pachydermatis in 52.0% of the samples from dogs with otitis, but in only 21.8% of the healthy auditory tube samples. M. pachydermatis was isolated in 37.5% of the samples from dogs with healthy auditory tube and 76.5% (p0.05. Infection by M. pachydermatis was prevalent in the following breeds: Cocker Spainel, German Shepherd and Brazilian Fila. No differences were found in frequency of the infection in relation to age, sex and ear anatomy of the dogs. Otomycosis were predominantly ceruminous and erythematous. M. pachydermatis was the most frequent agent in external otitis.Este trabalho teve como objetivos estudar a ocorrência da Malassezia pachydermatis e de outros agentes etiológicos em cães com otite externa e com conduto auditivo externo hígido; caracterizar a otomicose por M. pachydermatis. Foram analisadas 32 amostras de cães com o conduto auditivo hígido e 102 de otite externa. Todas as amostras foram submetidas ao exame direto, cultivo em ágar sangue e em ágar Sabouraud dextrose acrescido de cloranfenicol e cicloheximida. Ao exame direto 52.0% das amostras de otite apresentaram mais de dez células de M. pachydermatis. Somente 21.8% das amostras de orelhas hígidas apresentaram no exame direto células com esta morfologia (uma a dez células. M. pachydermatis foi isolada em 37.5% das amostras do conduto auditivo hígido e em 76.5% das amostras de otite (p0.05. A infecção por M. pachydermatis foi prevalente em cães da ra

  2. Produção e desenvolvimento radicular de plantas de café 'Conilon' propagadas por sementes e por estacas Yield and root development of 'Conilon' coffee plants propagated by cuttings and seeds

    Directory of Open Access Journals (Sweden)

    Fábio Luiz Partelli

    2006-06-01

    Full Text Available O objetivo deste trabalho foi avaliar a produção e o desenvolvimento radicular e da parte aérea de plantas de café 'Conilon', provenientes de sementes e de estacas, no Município de Vila Valério, ES. Foi utilizado o delineamento experimental em blocos ao acaso com dois tratamentos (mudas provenientes de sementes e de estacas e 12 repetições com cinco plantas úteis por parcela. As avaliações da parte aérea foram realizadas a partir de sete meses do plantio. Foram realizadas seis desbrotas e cinco colheitas. A avaliação do sistema radicular foi realizada aos 52 meses depois do plantio em quatro profundidades (0-10, 10-20, 20-40 e 40-60 cm. Foram quantificados o diâmetro, o comprimento e a área superficial de raízes. As plantas propagadas por estaca emitiram maior número de ramos plagiotrópicos, durante os sete primeiros meses de idade, e menor número de brotos ortotrópicos durante todo o experimento. Não houve diferenças no comprimento e na área superficial de raízes finas, entre plantas propagadas por sementes e por estacas. Houve maior concentração de raízes finas nas camadas superficiais do solo. A produtividade das plantas propagadas por estacas é maior do que a das plantas propagadas por sementes.The objective of this work was to evaluate the production and root and shoot development of plants of 'Conilon' coffee, grown from seeds and branches, in Vila Valério, ES, Brazil. The experiment was performed in randomized complete block design, with two treatments (seedlings originated from seeds and branches, and 12 replicates with five plants per plot. Shoot growth evaluation was performed seven months after planting. Six pruning of the orthotropic branches and five yields were evaluated. The evaluation of the root system was done 52 months after planting in four depths (0-10, 10-20, 20-40 and 40-60 cm. Diameter, length and superficial area of roots were quantified. Plants grown from cuttings produced more plagiotropic

  3. Criticality Studies in a Pilot Plant for Processing MTR-Type Irradiated Fuels; Estudios de Criticidad de una Planta Piloto para el Tratamiento de Combustibles Irradiados Tipo ' MTR '

    Energy Technology Data Exchange (ETDEWEB)

    Pereira Sanchez, G.; Uriarte Hueda, A. [Junta de Energia Nuclear, Division de Materiales Madrid (Spain)

    1966-05-15

    A number of theoretical studies on nuclear safety have been carried out in a pilot plant being constructed at the Junta de Energia Nuclear in Madrid for processing irradiated fuels from the MTR-type experimental reactor JEN-1. The study was carried out working with aqueous and organic solutions at two levels of {sup 235}U enrichment - 20% and 93%. The paper is divided into two main parts: the first deals with the individual items of equipment, and the interactions between these are studied in the second part. The calculations in this second part have been made using three different methods to make it more certain that the system as a whole can never be critical. The first method employed is based on the solid angle concept and makes it possible to fix the maximum {sup 235}U concentrations within the system. The second method, based on the albedo, supplies the value of the multiplication factor K of the whole assembly as a function of the concentration of {sup 235}U. In the last part, the distribution of the equipment is compared with other similar systems and experimental tests from other sources. Finally, the paper specifies the conditions for working the installation which ensure that a nuclear accident can never occur. (author) [Spanish] Se ha efectuado una serie de estudios teoricos sobre la seguridad nuclear de una planta piloto, que se encuentra en construccion en la Junta de Energfa Nuclear situada en Madrid, para el tratamiento de combustibles irradiados procedentes del reactor experimental JEN-1 del tipo MTR. El estudio se ha realizado utilizando disoluciones, tanto acuosas como organicas, con dos grados de enriquecimiento, 20% y 93% en {sup 235}U. Este trabajo comprende dos partes principales: en la primera se han considerado las distintas unidades del equipo individualmente y en la segunda se han estudiado las interacciones entre ellas. El calculo de esta segunda parte se ha hecho por tres metodos diferentes para tener una mayor seguridad de que el

  4. Efeito da radiação gama sobre o perfil sensorial de suco de laranja Effect of gamma irradiation on sensory profile of orange juice

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    Marta Regina Verruma-Bernardi

    2003-04-01

    Full Text Available O trabalho teve como objetivo avaliar o efeito de doses de radiações sobre as características sensoriais do suco fresco de laranja variedade 'Pêra' (Citrus sinensis L conservado sob refrigeração. Utilizou-se amostras de suco de laranja refrigerado (controle e suco de laranja refrigerado irradiado com 1,5 e 3,0kGy por hora (Cobalto60, armazenadas a 4ºC por 1, 7, 14 e 21 dias a 4ºC. Para a análise sensorial realizou-se a Análise Descritiva Quantitativa, na qual provadores selecionados e treinados avaliaram a aparência, aroma, sabor e textura oral dos sucos. As doses de radiação alteraram características de aparência como cor, brilho e grumosidade. As amostras de suco irradiados apresentaram coloração amarelo mais claro, maior brilho e menor grumosidade que o suco controle. Os sucos irradiados apresentaram também maior intensidade de aroma cozido, passado e artificial, gosto ácido, amargo, sabor cozido, de sumo, passado e de laranja artificial. As doses de radiação utilizadas alteraram as características de corpo e adstringência. A cor e a grumosidade do suco não irradiado intensificaram-se com o tempo de armazenamento. Com base nos resultados obtidos, pode-se concluir que a irradiação do suco promoveu alterações nas características sensoriais.The objective of this work was to evaluate the characteristics of the irradiated fresh of 'Pera' sweet orange (Citrus sinnensis L. juice and kept refrigerated. Samples of orange juice (control and samples irradiated with 1.5 and 3.0kGy per hour (Cobalt 60 were stored for 1, 7, 14 and 21 days at 4ºC. Quantitative Descriptive Analysis was conducted by a selected trained panels that evaluated appearance, aroma, flavor and texture of juices. Radiation levels affected appearance characteristics as color, shine and gummy. Irradiated juice resulted more clear and shinny and less gummy, more cooked, with past and artificial aroma, more acid, bitter, cooked, sap, past and with accentuated

  5. GESTÃO DA DRENAGEM URBANA NO BRASIL: DESAFIOS PARA A SUSTENTABILIDADE

    OpenAIRE

    Vladimir Caramori Borges de Souza

    2013-01-01

    Os sistemas de drenagem urbana no Brasil ainda seguem um padrão baseado apenas em eficiência hidráulica de condutos, apesar de já haver um reconhecimento de que este tipo de abordagem não resolve os problemas no longo prazo; é apenas uma ação pontual e que age sobre os efeitos. Desta forma, os sistemas de drenagem continuam sendo concebidos, dimensionados e projetados para falhar. Apesar de haver grande avanço acadêmico no desenvolvimento de técnicas e abordagens mais integradoras, com foco n...

  6. [Immunoexpression and clinical significance of interleukin-21 and receptor activator of nuclear factor κB ligand in human periapical granulomas and radicular cysts].

    Science.gov (United States)

    Hu, Juhua; Li, Qian; Wang, Yanqing; Li, Song

    2015-06-01

    This study aimed to detect the immunoexpression of interleukin-21 (IL-21) and receptor activator. of nuclear factor KB ligand (RANKL) in periapical granulomas (PGs) and radicular cysts (RCs). The interaction of IL-21 with RANKL and its role in periapical pathogenesis were also speculated. A total of 32 PGs and 23 RCs were selected as experimental samples. Lesion size and occurrence of tenderness were recorded. Up to 10 healthy gingival tissues were collected as normal control samples. All tissues were subjected to immunohistocheincal analysis with anti-human IL-21 and RANKL polyclonal antibodies. The correlations of IL-21 with RANKL, lesion size, and the occurrence of tenderness of the PGs and RCs were evaluated. IL-21-positive cells were detected in all periapical lesion tissues but not in normal tissues. In the cyst group and granuloma group, the corresponding expression levels of IL-21 were 59.92±6.57 and 36.80± 6.81, whereas those of RANKL were 68.81±18.59 and 36.12±14.87, respectively. Moreover, t-test revealed a significantly higher expression of IL-21 and RANKL in RCs than in PGs (P<0.05). IL-21 and RANKL were positively correlated in both PGs and RCs (P<0.05). Furthermore, IL-21 was correlated with lesion size (P<0.05). This study demonstrated that IL-21 is potentially involved in the pathogenesis of apical periodontitis lesions. A role in the exacerbation of chronic inflammation, as well as in bone resorption, is suspected. Further studies are required to elucidate the specific functions of IL-21 in periradicular inflammatory processes.

  7. Source-sink manipulations in Coffea arabica L. and its effect on growth of shoots and root system Manipulação da relação fonte-dreno em Coffea arabica L. e seu efeito no crescimento da parte aérea e do sistema radicular

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    José Donizeti Alves

    2011-10-01

    Full Text Available This paper investigated changes in growth and carbohydrate content of shoots and root systems in response to source-sink manipulation in field-grown coffee trees. The source-sink manipulations were carried out using manual de-fruiting. Two plots of trees were established: in one group, the fruit was left on the tree, while in the second group all fruits were removed manually. Similar results were obtained for coffee trees with and without fruit in terms of height, stem and skirt diameter and branch lengths. A biochemical evaluation of the roots showed that no differences were found between the levels of carbohydrates. In the leaves, levels of soluble sugars and reducing sugars were higher in plants with fruit. The starch concentration in leaves and roots did not vary between the plots. Root length density did not vary between plants with and without fruit in the 0 - 0.4 m soil layer. However, plants without fruit had a higher root length density than plants with a full fruit load. These results contrast with results published by others on source-sink relationships of coffee plants. The joint data analysis shows that young trees, with a moderate fruit load, and with good nutritional and health status, produce carbohydrates in sufficient quantities to maintain vegetative and reproductive growth, without harming root system growth.Foram investigadas as alterações no crescimento e nos teores de carboidratos da parte aérea e sistema radicular em resposta à manipulação fonte-dreno em cafeeiros cultivados em condições de campo. Essas manipulações foram realizadas mediante desfrutificação manual. Dois grupos de plantas foram estabelecidos: em um grupo, a produção de frutos foi mantida, enquanto no segundo grupo, todos os frutos foram retirados manualmente. Cafeeiros, com e sem frutos apresentaram resultados semelhantes em termos de altura, diâmetro do caule e saia e comprimentos de ramos. Nas avaliações bioquímicas nas raízes n

  8. Efecto del follaje de Tagetes minutasobre la nodulación radicular de Meloidogyne incognitaen Capsicum annuum, en invernadero Effect of the foliage of Tagetes minutaon Meloidogyne incognitaroot-galling on Capsicum annuumin a greenhouse

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    Santos Nélida Murga-Gutiérrez

    2013-06-01

    Full Text Available Se investigó el efecto del follaje del “huacatay” Tagetes minutasobre la nodulación radicular producida por el nematodo Meloidogyne incognitaque parasita el “pimiento páprika” Capsicum annuumcultivado en invernadero, con la finalidad de obtener una alternativa de control de este nematodo. Se utilizaron tres grupos experimentales y un testigo, con 12 macetas cada uno, las cuales contenían suelo y arena estériles (1:1. A este substrato se adicionó el follaje de T. minutaal 20, 35 y 50% (v/v según grupo experimental, y el testigo no recibió esta enmienda. En cada maceta se sembró una plántula de C. annuum, y a la semana postsiembra se inoculó 5000 huevos de M. incognita.A las ocho semanas, se evaluaron los nódulos en sus raíces. Todas las plantas presentaron nódulos; aunque, en aquellas de los grupos experimentales el número de éstos fue menor que en las plantas testigo, con diferencia estadística significativa (p 0,05. Se concluye que el follaje de T. minutaadicionado como enmienda orgánica al 20, 35 y 50% al suelo de cultivo de plantas de C. annuum limita la nodulación radicular ocasionada por M. incognita. Lo cual sugiere su uso potencial en el control de este nematodo.The effect of the foliage of Tagetes minuta"huacatay" on Meloidogyne incognitaroot-galling on Capsicum annuum"paprika pepper" cultured in a greenhouse was researched, to obtain a control strategy for this nema-tode. Three experimental groups and one control with 12 pots each were used, which contained sterilized soil and sand (1:1. To this substrate was added cut foliage of T. minutaat 20, 35 and 50% (v/v according to the experimental group, and the control group remained without this amendment. In each pot a seedling of C. annuum was sown, and one week post-seeding was inoculated with 5000 eggs of M. incognita. Eight weeks later the root galling was evaluated. All the plants had root galling; although the number of galls in plants of the experimental

  9. CRESCIMENTO RADICULAR E NUTRIÇÃO DA CEVADA EM FUNÇÃO DA CALAGEM E APLICAÇÃO DE GESSO BARLEY NUTRITION AND ROOT GROWTH AS AFFECTED BY LIME AND GYPSUM APPLICATIONS

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    EDUARDO FÁVERO CAIRES

    2001-01-01

    Full Text Available A calagem superficial ou incorporada e a aplicação de gesso no solo levam a modificações químicas no perfil que podem influenciar o crescimento de raízes das culturas anuais. O crescimento radicular e a nutrição da cevada, cv. BR 2 (sensível ao Al, foram estudados em função da aplicação de calcário dolomítico (sem calcário e 4,5 t.ha-1 de calcário na superfície ou incorporado e doses de gesso (0, 3, 6 e 9 t.ha-1, em LATOSSOLO VERMELHO Distrófico textura argilosa, em Ponta Grossa (PR. O delineamento experimental adotado foi o de blocos ao acaso em esquema de parcela subdividida, com três repetições. Os tratamentos de calagem (parcelas e as doses de gesso (subparcelas foram aplicados na instalação do sistema plantio direto, em 1998. Avaliaram-se as alterações nos atributos químicos do solo e no crescimento de raízes de cevada no inverno de 1999, após o cultivo de soja. A calagem, na superfície ou incorporada e a aplicação de gesso não influenciaram significativamente o crescimento radicular da cevada, embora o gesso tenha proporcionado melhor distribuição relativa de raízes em profundidade, principalmente quando associado à calagem. Em condições de déficit hídrico severo, não houve limitação no crescimento radicular da cevada, em profundidade, para o teor de Ca trocável de 6 mmol c.dm-3 e a saturação por Al de 35%. A incorporação de calcário melhorou a nutrição de N e K da cevada, mas a produção não foi influenciada pela correção da acidez do solo por meio da calagem na superfície ou com incorporação, certamente devido à prolongada estiagem no período de florescimento da cultura, o que limitou a produção de grãos. A aplicação de gesso melhorou a absorção de N, P, K, Ca e S pela cevada, em condições de deficiência hídrica, proporcionando acréscimos na produção de grãos, em decorrência do aumento de Ca trocável, da relação Ca/Mg e do S-SO4(2- disponível no solo

  10. Immunohistochemical expression of vascular endothelial growth factor in keratocystic odontogenic tumor, dentigerous cyst, and radicular cyst: A comparative study.

    Science.gov (United States)

    Khajuria, Nidhi; Metgud, Rashmi; Naik, Smitha; Lerra, Sahul; Tiwari, Priya; Mamta; Katakwar, Payal; Tak, Anirudh

    2016-01-01

    Cyst and tumors arise from tissue remains of odontogenesis, these interactions have been considered to play an important role in the tumorigenesis of odontogenic lesions. The connective tissue stroma has an essential role in the preservation of epithelial tissues and minor alterations in the epithelium are followed by corresponding changes in the stroma, such as angiogenesis. Vascular endothelial growth factor (VEGF) is considered the first factor which maintains its position as the most critical driver of vascular formation and is required to initiate the formation of immature vessels, with this aim, present study was executed to evaluate VEGF expression in kertocystic odontogenic tumor, dentigerous cyst and radicular cyst (RC). A retrospective study was carried out comprising a total of 31 cases; 13 cases of keratocystic odontogenic tumor (KCOT), nine cases of dentigerous cyst (DC) and nine cases of RC. The sections were stained immunohistochemically with VEGF antibody and were evaluated for the presence and intensity of the immuno reactive cells. Statistical analysis was carried out using Chi-square test to inter-compare the VEGF expression between KCOT, DC, and RC. VEGF expression in the epithelium and connective tissue was significantly higher in KCOT compared to dentigerous and RC. One case of KCOT with carcinomatous change also revealed positive results for the VEGF expression in the dysplastic epithelium, tumor islands, and connective tissue. The significant difference was observed on inter-comparison of the VEGF expression in the connective tissue of KCOT and DC, whereas no significant difference was observed in the VEGF expression in the connective tissue of KCOT and DC. The present study data supports the literature finding that angiogenesis can be important in the progression and enlargement of odontogenic cysts similarly to what occurs in neoplastic conditions and further it can be concluded that the higher positivity for VEGF of KCOT could help to

  11. Irrigación en Endodoncia

    OpenAIRE

    Villa López, Lucía

    2012-01-01

    Trabalho apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária El principal objetivo de la preparación endodóntica es la limpieza y desinfección de los canales radiculares, manteniendo su morfología. La irrigación y conformación de los canales radiculares se considera fases muy importantes para conseguir el éxito del tratamiento endodóntico. La limpieza del canal radicular depende tanto de la técnica de instrumentaci...

  12. Immunohistochemical expression of TGF-β1 and MMP-9 in periapical lesions

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    Pâmella Recco ÁLVARES

    2017-07-01

    Full Text Available Abstract The objective of this study was to evaluate the expression of matrix metalloproteinase 9 (MMP-9 and transforming growth factor beta (TGF-β1 in periapical lesion samples correlated with the intensity of the inflammatory infiltrate and thickness of the epithelial lining. Forty-five cases of periapical lesions (23 periapical granulomas and 22 radicular cysts were subjected to morphological and immunohistochemical analyses using anti-MMP-9 and anti-TGF-β1 antibodies. The data were analyzed using the following tests: non-parametric Mann-Whitney, chi-square, Fisher’s exact test and Spearman’s correlation test (P<0.05. Analysis of inflammatory infiltrate revealed that 78% of periapical granulomas presented infiltrate grade III, in contrast with 32% of radicular cysts (P<0.001. Morphological evaluation of the epithelial thickness in radicular cysts revealed the presence of atrophic epithelium in 86% of the cysts. The immunostaining of MMP-9 was score 2 in 67% of the granulomas and 77% of the cysts. Both lesions were predominantly score 1 for TGF-β1. Significant differences were confirmed between the expression scores of TGF-β1 and MMP-9 in periapical granulomas (p = 0.004 and in radicular cysts (p < 0.001. Expression of TGF-β1 was different for periapical granulomas and radicular cysts. This immunoregulatory cytokine seems more representative in asymptomatic lesions. The extracellular matrix remodeling process dependent on MMP-9 seems to be similar for both periapical granulomas and radicular cysts. TGF-β1 and MMP-9 may play an important role in the maintenance of periapical lesions.

  13. Neural-Dural Transition at the Thoracic and Lumbar Spinal Nerve Roots: A Histological Study of Human Late-Stage Fetuses

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    Kwang Ho Cho

    2016-01-01

    Full Text Available Epidural blocks have been used extensively in infants. However, little histological information is available on the immature neural-dural transition. The neural-dural transition was histologically investigated in 12 late-stage (28–30 weeks fetuses. The dural sheath of the spinal cord was observed to always continue along the nerve roots with varying thicknesses between specimens and segments, while the dorsal root ganglion sheath was usually very thin or unclear. Immature neural-dural transitions were associated with effective anesthesia. The posterior radicular artery was near the dorsal root ganglion and/or embedded in the nerve root, whereas the anterior radicular artery was separated from the nearest nerve root. The anterior radicular artery was not associated with the dural sheath but with thin mesenchymal tissue. The numbers of radicular arteries tended to become smaller in larger specimens. Likewise, larger specimens of the upper thoracic and lower lumbar segments did not show the artery. Therefore, elimination of the radicular arteries to form a single artery of Adamkiewicz was occurring in late-stage fetuses. The epidural space was filled with veins, and the loose tissue space extended ventrolaterally to the subpleural tissue between the ribs. Consequently, epidural blocks in infants require special attention although immature neural-dural transitions seemed to increase the effect.

  14. Crescimento, morfologia radicular e liberação de compostos orgânicos por plântulas de soja em função da atividade de alumínio na solução do solo de campo natural Growth, root morphology and organic compounds released by soybean seedlings as a function of aluminum activity in a field soil solution

    Directory of Open Access Journals (Sweden)

    Antonio Nolla

    2007-02-01

    Full Text Available A toxicidade do alumínio em solos é considerada uma das maiores limitações para a produção das culturas. No entanto, algumas plantas são capazes de tolerar altas concentrações de alumínio por sua complexação com ácidos orgânicos exsudados pelas raízes. No intuito de estudar os efeitos concomitantes de faixas pH e de alumínio no desenvolvimento radicular de plântulas de soja, desenvolveu-se um trabalho na solução de um Argissolo Vermelho distrófico típico de campo natural. Cultivou-se, em câmara de crescimento, plântulas pré-germinadas de soja durante três dias dentro de tubos de ensaio aerados contendo 40ml da solução do solo (4,2µmol de Al L-1, submetidos a quatro concentrações de alumínio (0,0; 0,3; 0,6 e 1,2µmol L-1 e três níveis de pH (4,0; 5,0 e 6,0. O crescimento radicular e da parte aérea da soja foi menor em condições mais ácidas (pH 4,0. Em condições de acidez intermediária (pH H2O 5,0, o crescimento radicular foi menos afetado pelas espécies rizotóxicas de alumínio, mesmo quando submetidas a elevadas concentrações de alumínio na solução do solo.Aluminum toxicity in soils is considered one of the major limitations to crop production. However, some plants are able to tolerate high aluminum concentrations due to its complexation with root organic acids exudates. The simultaneous effect of pH ranges and aluminum concentration in soil solution on soybean seedlings root development was studied in a Rhodic Paleudult soil solution under natural grasses vegetation. Soybean seedlings were grown in growth chamber for three days in aerated test tubes containing 40ml soil solution (4.2µmol Al L-1, submmited to four aluminum concentrations (0.0, 0.3, 0.6 and 1.2mmol L-1 and three pH levels (4.0, 5.0 and 6.0. Root and aerial growth decreased under more acidic conditions (pH 4.0. Root growth was less affected by rhyzotoxic aluminum species at pH 5.0, even when submitted to high concentration of

  15. Blood cell attachment to root surfaces treated with EDTA gel Adesão de células sangüíneas a superfícies radiculares tratadas com gel de EDTA

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    Fábio Renato Manzolli Leite

    2005-06-01

    Full Text Available Root debridement generates a smear layer which contains microorganisms and toxins that could interfere in periodontal healing. For this reason, different substances have been used to remove it and to expose collagen fibers at the tooth surface. Blood element adhesion to demineralized roots and clot stabilization by collagen fibers are extremely important for the success of periodontal surgery. The aim of this study was to evaluate the different patterns of blood element adsorption and adhesion to root surfaces only irrigated with distilled water and after application of a manipulated or an industrialized EDTA gel. Thirty samples were planed, equally divided into three groups and treated with distilled water (control, a manipulated EDTA gel or an industrialized one. Immediately after, samples were exposed to fresh blood and prepared for scanning electron microscopy. Untreated planed dentin presented the best results with blood cells entrapped in a thick web of fibrin. In the manipulated EDTA group, the web of fibrin was thick with sparse blood elements. The worst result was seen with the industrialized EDTA group, in which no blood elements could be seen. Statistical difference was obtained between control and industrialized EDTA groups. Surfaces only irrigated presented the most organized fibrin network and cell entrapment.A raspagem gera "smear layer", a qual contém microrganismos e toxinas que podem interferir no reparo periodontal. Por esse motivo, diferentes substâncias têm sido empregadas para remover esta camada e expor fibras colágenas da superfície dental. A adesão de elementos sangüíneos a superfícies radiculares desmineralizadas e a estabilização do colágeno pelas fibras colágenas são de extrema importância no sucesso da cirurgia periodontal. O objetivo deste estudo foi avaliar os diferentes padrões de adsorção e adesão de elementos sangüíneos a superfícies radiculares apenas irrigadas com água destilada e ap

  16. Bioatividade de ácidos húmicos: efeitos sobre o desenvolvimento radicular e sobre a bomba de prótons da membrana plasmática

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    Façanha Arnoldo Rocha

    2002-01-01

    Full Text Available A bioatividade de ácidos húmicos (AH isolados de lodo da estação de tratamento de esgoto (AHL e de vermicomposto (AHV foi avaliada pela ação dessas substâncias sobre o transporte de prótons através da membrana plasmática de células de raízes de café e milho e sua relação com o desenvolvimento dessas espécies. Houve estímulo da área superficial radicular em ambas as espécies cultivadas com ambos AH, mostrando uma concentração ótima em torno de 40 mg L-1. Nessa condição, os tratamentos com AHL e AHV estimularam a H+-ATPase de membrana plasmática em plântulas de café e milho. Os AHL foram mais efetivos na promoção desses efeitos do que os AHV. A modificação do perfil cromatográfico dos AH em solução antes e após o cultivo das plântulas revelou que a interação planta-AH promoveu uma redistribuição das massas moleculares dessas substâncias, sugerindo uma dinâmica de mobilização de subunidades funcionais dos AH por exsudatos das raízes. A análise estrutural dos AH detectou a presença de grupamentos de auxina. A análise comparativa da ação desses dois AH sobre as espécies representantes de plantas monocotiledôneas (milho e dicotiledôneas (café apontam para a ativação da H+-ATPase de plasmalema como possível marcador metabólico de bioatividade dos ácidos húmicos.

  17. Efeitos da laserterapia de baixa potência na reposta oxidativa epidérmica induzida pela cicatrização de feridas Effects of low-level laser therapy on epidermal oxidative response induced by wound healing

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    PCL Silveira

    2009-08-01

    Full Text Available INTRODUÇÃO: O uso terapêutico do laser de baixa potência na fisioterapia tem aumentado significativamente. OBJETIVO: Avaliar os efeitos da laserterapia de baixa potência nos parâmetros oxidativos na cicatrização de feridas em ratos. MÉTODOS: Dezoito ratos Wistar foram divididos randomicamente em 3 grupos (controle 5 dias, n=6; 5 dias/2 J/cm², n=6; 5 dias/4 J/cm², n=6. Uma única ferida circular medindo 8 X 8 mm foi cirurgicamente realizada no dorso do rato. Trinta minutos após a última irradiação, os ratos foram submetidos à eutanásia, e o tecido irradiado foi removido cirurgicamente e armazenado a -70ºC. Foi determinada a atividade das enzimas da cadeia respiratória: DCIP oxirredutase (complexo II e succinato desidrogenase solúvel (SDH, atividade do citocromo c oxidase (complexo IV, produção de ânion superóxido, atividade da superóxido dismutase (SOD e catalase (CAT. A lipoperoxidação foi avaliada pela técnica de TBARS. RESULTADOS: Os resultados mostram uma diminuição na atividade do complexo II nos grupos irradiados por 5 dias com 2 e 4 J/cm², enquanto a produção de ânion superóxido mostrou uma diminuição significativa no grupo irradiado por 5 dias com 4 J/cm² em relação ao grupo controle. Além disso, um aumento significativo na atividade da catalase foi observado no grupo irradiado por 5 dias com 2 J/cm², como também uma diminuição da peroxidação lipídica nos dois grupos irradiados. CONCLUSÕES: Os resultados do presente estudo indicam que o laser estimula a atividade antioxidante e protege a célula contra danos oxidativos durante o processo de cicatrização de feridas cutâneas em ratos.BACKGROUND: Therapeutic use of low-level laser in physical therapy has increased significantly. OBJECTIVE: To assess the effects of low-level laser therapy on the oxidative parameters of wound healing in rats. METHODS: Eighteen Wistar rats were randomly divided into three groups (control, 5 days, n=6; 2 J

  18. Aporte de carbono solúvel pelo sistema radicular de arroz e sua influência nos teores de substâncias húmicas de um Latossolo Vermelho-Amarelo Input of dissolved carbon and its influence on humic substances content in an Oxisol

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    Erika Polverari Farias

    2005-12-01

    Full Text Available O objetivo deste trabalho foi quantificar a contribuição da deposição de C-orgânico solúvel pelo sistema radicular de arroz e a evolução de CO2, durante 64 dias de incubação, em amostras de um Latossolo Vermelho-Amarelo com adição de glicose e de raízes de arroz coletadas em diversos estádios de crescimento da planta (aos 40, 60, 80, 100, 120 e 140 dias da semeadura. Foi realizado o fracionamento da matéria orgânica humificada para avaliar o efeito da adição de sistema radicular na composição do húmus do solo. A rizodeposição de C-orgânico via exsudatos e, ou, decomposição de tecidos mortos mostrou-se correlacionada com o estádio de desenvolvimento da cultura. A rizodeposição total foi estimada em valores ao redor de 90 g m-2 de C por ciclo da planta. A adição de C via raízes às amostras de solo promoveu intensa mineralização da matéria orgânica preexistente no solo, principalmente nos primeiros dias de incubação, e aumentou o teor de C na fração ácidos fúlvicos do húmus, no final do experimento.The aim of this study was to quantify the contribution of soluble organic-C deposition by rice root system and the CO2 evolution during 64 days in an Oxisol samples treated with glucose, and rice roots collected at different plant growth stages (40, 60, 80, 100, 120 and 140 days after sowing. Thereafter, organic matter was fractionated to evaluate the effect of the addition of a root system on the soil humus composition. It was possible to observe the intense rhizodeposition of organic C by exudation or by decomposition of dead tissues. Organic C deposition via rhizodeposition was correlated with the plant development stages. Total rhizodeposition was estimated to be around 90 g m-2 C per plant cycle. The addition of organic C into soil samples via roots promoted intense mineralization of the native soil organic matter, particularly in the beginning of the incubation period, and eventually enhanced the fulvic

  19. Clinical significance of the position of dorsal root ganglia in degenerative lumbar diseases. Correlation between anatomic study and imaging study with MRI

    Energy Technology Data Exchange (ETDEWEB)

    Seki, Masahiro; Kikuchi, Tomiichi [Fukushima Medical Coll., Matsuoka (Japan)

    1995-06-01

    In order to estimate the ralationship between the position of dorsal root ganglia (DRG) and radicular symptoms, anatomical study was done on 81 cadavers, and a clinical study with MRI was done on 20 cases of lumbar disc herniation and 20 of lumbar spondylosis with L{sub 5} radiculopathy. The position of DRG is not related to the occurrence of radicular symptoms in disc herniation, while in lumbar spondylosis proximally placed DRG are related to both of unilateral and bilateral occurrence of redicular symptoms. Unilateral occurrence of radicular symptoms is influenced by surrounding tissues of the nerve root, rather than the position of DRG. (author).

  20. Clinical significance of the position of dorsal root ganglia in degenerative lumbar diseases. Correlation between anatomic study and imaging study with MRI

    International Nuclear Information System (INIS)

    Seki, Masahiro; Kikuchi, Tomiichi

    1995-01-01

    In order to estimate the ralationship between the position of dorsal root ganglia (DRG) and radicular symptoms, anatomical study was done on 81 cadavers, and a clinical study with MRI was done on 20 cases of lumbar disc herniation and 20 of lumbar spondylosis with L 5 radiculopathy. The position of DRG is not related to the occurrence of radicular symptoms in disc herniation, while in lumbar spondylosis proximally placed DRG are related to both of unilateral and bilateral occurrence of redicular symptoms. Unilateral occurrence of radicular symptoms is influenced by surrounding tissues of the nerve root, rather than the position of DRG. (author)

  1. Right attitude, right decision and timely planning in surgical pedodontics -scoop out or expose it.

    Science.gov (United States)

    Kethineni, Balaji; Peddi, Ravigna; Puppala, Ravindar; Banavath, Sunitha; Chowdary, Uday Kumar; Raj, Deepak

    2013-04-01

    Radicular cysts are the most common odontogenic cystic lesions of inflammatory origin and are usually asymptomatic and are left unnoticed, until detected by routine radiography. It is managed either by surgical enucleation or marsupialization. Conventional nonsurgical endodontic treatment has a high degree of clinical success, but in certain cases surgical intervention becomes necessary. This is the case report of a patient presenting with unilateral radicular cyst. The lesion is managed by marsupialization using a novel and safe method of separating the soft tissue mass of the periapical lesion which was in proximity to vital and vulnerable anatomical tissue, emphasizing the need of application of treatment in the best interest of patients. The treatment of choice is dependent on the size and localization of the lesion, the bone integrity of the lesions wall and its proximity to vital structure. This case report of radicular cysts emphasis on the advantages and disadvantages of the leading criteria that should be taken into consideration when assessing the treatment modalities for radicular cyst. Odontogenic cysts, Radicular cyst, Marsupialization, Enucleation. How to cite this article: Kethineni B, Peddi R, Puppala R, Sunitha B, Chowdary U K, Raj D. Right Attitude, Right Decision and Timely Planning in Surgical Pedodontics -Scoop Out or Expose It. J Int Oral Health 2013; 5(2):50-54.

  2. Immunohistochemical expression of TGF-β1 and MMP-9 in periapical lesions.

    Science.gov (United States)

    Álvares, Pâmella Recco; Arruda, José Alcides Almeida de; Silva, Leorik Pereira da; Nascimento, George João Ferreira do; Silveira, Maria Fonseca da; Sobral, Ana Paula Veras

    2017-07-03

    The objective of this study was to evaluate the expression of matrix metalloproteinase 9 (MMP-9) and transforming growth factor beta (TGF-β1) in periapical lesion samples correlated with the intensity of the inflammatory infiltrate and thickness of the epithelial lining. Forty-five cases of periapical lesions (23 periapical granulomas and 22 radicular cysts) were subjected to morphological and immunohistochemical analyses using anti-MMP-9 and anti-TGF-β1 antibodies. The data were analyzed using the following tests: non-parametric Mann-Whitney, chi-square, Fisher's exact test and Spearman's correlation test (Pperiapical granulomas presented infiltrate grade III, in contrast with 32% of radicular cysts (Pcysts revealed the presence of atrophic epithelium in 86% of the cysts. The immunostaining of MMP-9 was score 2 in 67% of the granulomas and 77% of the cysts. Both lesions were predominantly score 1 for TGF-β1. Significant differences were confirmed between the expression scores of TGF-β1 and MMP-9 in periapical granulomas (p = 0.004) and in radicular cysts (p periapical granulomas and radicular cysts. This immunoregulatory cytokine seems more representative in asymptomatic lesions. The extracellular matrix remodeling process dependent on MMP-9 seems to be similar for both periapical granulomas and radicular cysts. TGF-β1 and MMP-9 may play an important role in the maintenance of periapical lesions.

  3. Distribuição do sistema radicular de citros em uma toposseqüência de solos de tabuleiro costeiro do Estado da Bahia Citrus root system distribution in a coastal table land soil toposequence of the state of Bahia, Brazil

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    Luciano da Silva Souza

    2008-04-01

    Full Text Available O aprofundamento do sistema radicular dos citros é importante para aumentar a produtividade e a longevidade dessa cultura, principalmente em solos que apresentam horizontes coesos subsuperficiais. Assim, o objetivo deste trabalho foi avaliar a distribuição das raízes da laranjeira 'Hamlin' enxertada em limoeiro 'Cravo', com 15 anos de idade, em uma toposseqüência de tabuleiro de Sapeaçu-BA, composta por Latossolo Amarelo argissólico (LAx e Argissolo Amarelo (PAx, ambos coesos, e Argissolo Acinzentado (PAC, não coeso. Em 2001, retiraram-se amostras de raízes em uma planta no LAx e no PAx e em duas no PAC, em quatro horizontes, em quatro pontos na linha e em cinco na entrelinha, distanciados por 0,50 m, usando-se um cilindro de aço de 1,20 m de comprimento e 0,085 m de diâmetro. As raízes foram digitalizadas em escaner e processadas no aplicativo GSRoot. As raízes da laranjeira 'Hamlin' enxertada em limoeiro 'Cravo' apresentaram grande sensibilidade à coesão, sendo a densidade de raízes 3,4 a 4,1 vezes maior no solo PAC, não coeso. A densidade das raízes encontradas nos horizontes superficiais do LAx e do PAx foi próxima daquela do horizonte mais profundo do PAC. A profundidade efetiva do sistema radicular, até onde se encontraram 80 % das raízes, foi maior no PAC não coeso, e a distância efetiva do sistema radicular, até onde se encontraram 80 % das raízes a partir do tronco, foi maior no PAx coeso, que foi o solo que apresentou a menor profundidade efetiva das raízes. Nos três solos, houve predominância de raízes com diâmetros 2 mm.The deepening of citrus root system is important to increase crop productivity and longevity, especially in soils with subsurface cohesive horizons. The objective of this study was to evaluate the root distribution of 'Hamlim' sweet orange grafted onto Rangpur lime. The 15 year-old plants were located in a coastal plain soil toposequence in Sapeaçu county, Bahia, Brazil. The soils were

  4. Quantification and localization of mast cells in periapical lesions.

    Science.gov (United States)

    Mahita, V N; Manjunatha, B S; Shah, R; Astekar, M; Purohit, S; Kovvuru, S

    2015-01-01

    Periapical lesions occur in response to chronic irritation in periapical tissue, generally resulting from an infected root canal. Specific etiological agents of induction, participating cell population and growth factors associated with maintenance and resolution of periapical lesions are incompletely understood. Among the cells found in periapical lesions, mast cells have been implicated in the inflammatory mechanism. Quantifications and the possible role played by mast cells in the periapical granuloma and radicular cyst. Hence, this study is to emphasize the presence (localization) and quantification of mast cells in periapical granuloma and radicular cyst. A total of 30 cases and out of which 15 of periapical granuloma and 15 radicular cyst, each along with the case details from the previously diagnosed cases in the department of oral pathology were selected for the study. The gender distribution showed male 8 (53.3%) and females 7 (46.7%) in periapical granuloma cases and male 10 (66.7%) and females 5 (33.3%) in radicular cyst cases. The statistical analysis used was unpaired t-test. Mean mast cell count in periapical granuloma subepithelial and deeper connective tissue, was 12.40 (0.99%) and 7.13 (0.83%), respectively. The mean mast cell counts in subepithelial and deeper connective tissue of radicular cyst were 17.64 (1.59%) and 12.06 (1.33%) respectively, which was statistically significant. No statistical significant difference was noted among males and females. Mast cells were more in number in radicular cyst. Based on the concept that mast cells play a critical role in the induction of inflammation, it is logical to use therapeutic agents to alter mast cell function and secretion, to thwart inflammation at its earliest phases. These findings may suggest the possible role of mast cells in the pathogenesis of periapical lesions.

  5. Root perforation associated with the use of a miniscrew implant used for orthodontic anchorage: a case report.

    Science.gov (United States)

    McCabe, P; Kavanagh, C

    2012-07-01

    To highlight one of the possible complications associated with the inter-radicular placement of orthodontic miniscrews. This case report describes the endodontic treatment and surgical repair of an iatrogenic root perforation involving a maxillary first molar tooth following the placement of an orthodontic miniscrew placed for anchorage purposes in the treatment of an adult patient. The orthodontic treatment plan was completed. The long-term follow-up shows a successful treatment outcome. Inter-radicular placement of orthodontic miniscrews is a valuable source of anchorage in the treatment of orthodontic patients. Root perforation is a possible complication from inter-radicular placement of orthodontic miniscrews. Root perforation can be successfully treated, but may involve apical surgery. © 2012 International Endodontic Journal.

  6. Fracture resistance and failure pattern of teeth submitted to internal bleaching with 37% carbamide peroxide, with application of different restorative procedures Resistência à fratura e padrão de falha de dentes submetidos ao clareamento interno com peróxido de carbamida a 37%, com aplicação de diferentes procedimentos restauradores

    Directory of Open Access Journals (Sweden)

    Gerson Bonfante

    2006-08-01

    preenchida com resina composta fotopolimerizável; 4 dentes clareados, condutos preparados com 10mm, e preenchimento do conduto e câmara pulpar com IRM; 5 dentes clareados, condutos preparados com 10mm, cimentação de pino metálico pré-fabricado com fosfato de zinco e câmara pulpar vedada com resina composta; 6 dentes clareados, condutos preparados com 10mm, cimentação de pino de fibra de vidro com cimento resinoso e câmara pulpar vedada com resina composta. Após 24 horas de armazenamento em água destilada, os espécimes foram submetidos ao teste de resistência à fratura sob compressão em máquina de ensaios universal. RESULTADOS: Os seguintes valores foram encontrados: grupo 1 - 56,23kgf; grupo 2 - 48,96kgf; grupo 3 - 53,99kgf; grupo 4 - 45,72kgf; grupo 5 - 54,22kgf; grupo 6 - 60,12kgf. A Análise de Variância não mostrou diferença estatisticamente significante entre os grupos (p < .05, sugerindo que o clareamento interno com peróxido de carbamida a 37% não enfraqueceu os tecidos dentais. O maior número de fraturas desfavoráveis foi encontrado nos grupos 2 (50%, 4 (40%, e 5 (30%. O grupo 6 exibiu o padrão de falhas mais favorável. CONCLUSÃO: Os resultados sugerem que o clareamento interno com peróxido de carbamida a 37% não causou enfraquecimento importante dos dentes. Entre os dentes clareados, aqueles com restaurações temporárias de IRM ou com pinos metálicos mostraram o padrão mais desfavorável de fratura, enquanto o padrão de fratura mais favorável ocorreu em dentes restaurados com resina composta e pinos de fibras de vidro.

  7. A scanning electron microscopic evaluation of different root canal irrigation regimens Avaliação por microscopia eletrônica de varredura de diferentes regimes irrigantes no canal radicular

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    Chaves Medici Mônika

    2006-09-01

    Full Text Available The purpose of this study was to assess the effectiveness of endodontic irrigants in removing the smear layer from instrumented root canal walls using Scanning Electron Microscopy (SEM. The endodontic irrigants used were: 1% sodium hypochlorite (NaOCl; 1% NaOCl mixed to 17% EDTAC; 2% chlorhexidine gel; and Ricinus communis gel. Photomicrographs of the middle and apical thirds were evaluated with the aid of the Fotoscore - v. 2.0 software. The results indicated that the mixture of sodium hypochlorite and EDTAC completely removed the smear layer from dentinal walls. The other endodontic irrigants were not as efficient in cleansing the root canals.A proposta deste estudo foi avaliar, por meio de microscopia eletrônica de varredura (MEV, a efetividade dos irrigantes endodônticos na remoção da "smear layer" das paredes dos canais radiculares instrumentados. Os irrigantes endodônticos utilizados foram: solução de hipoclorito de sódio a 1%; solução de hipoclorito de sódio a 1% misturado ao EDTAC a 17%, gel de clorexidina a 2% e gel de Ricinus communis. Fotomicrografias dos terços médio e apical foram avaliadas com o auxílio do software Fotoscore - versão 2.0. Os resultados indicaram que a mistura da solução de hipoclorito de sódio e EDTAC removeu eficientemente a "smear layer" das paredes dentinárias. Os demais irrigantes endodônticos não foram tão eficientes na limpeza dos canais.

  8. Mixed periapical lesion: differential diagnosis of a case.

    Science.gov (United States)

    Krithika, C; Kota, S; Gopal, K S; Koteeswaran, D

    2011-03-01

    A radicular cyst associated with carious teeth is a very common odontogenic lesion in the oral cavity, but calcifications in residual radicular cysts are quite rare. We report one such case where a routine pre-implant radiographic assessment revealed a mixed periapical radiopaque radiolucent lesion in the right maxillary central incisor region. Histological and radiographic studies show that there is a slow increase in the mineralized deposits within the cyst lumen with time. This becomes prominent histochemically in cysts more than 8 years old and radiographically 6 years later, as seen in our case. In this paper we would like to highlight the importance of a residual radicular cyst with calcifications in the differential diagnosis of a mixed periapical radiopaque radiolucent lesion.

  9. Cyclin d1 expression in odontogenic cysts.

    Science.gov (United States)

    Taghavi, Nasim; Modabbernia, Shirin; Akbarzadeh, Alireza; Sajjadi, Samad

    2013-01-01

    In the present study expression of cyclin D1 in the epithelial lining of odontogenic keratocyst, radicular cyst, dentigerous cyst and glandular odontogenic cyst was investigated to compare proliferative activity in these lesions. Immunohistochemical staining of cyclin D1 on formalin-fixed, paraffin-embedded tissue sections of odontogenic keratocysts (n=23), dentigerous cysts (n=20), radicular cysts (n=20) and glandular odontogenic cysts (n=5) was performed by standard EnVision method. Then, slides were studied to evaluate the following parameters in epithelial lining of cysts: expression, expression pattern, staining intensity and localization of expression. The data analysis showed statistically significant difference in cyclin D1 expression in studied groups (p keratocysts, but difference was not statistically significant among groups respectively (p=0.204, 0.469). Considering expression localization, cyclin D1 positive cells in odontogenic keratocysts and dentigerous cysts were frequently confined in parabasal layer, different from radicular cysts and glandular odontogenic cysts. The difference was statistically significant (p keratocyst and the entire cystic epithelium of glandular odontogenic cysts comparing to dentigerous cysts and radicular cysts, implying the possible role of G1-S cell cycle phase disturbances in the aggressiveness of odontogenic keratocyst and glandular odontogenic cyst.

  10. Spondylolysis and spondylolisthesis: prevalence of different forms of instability and clinical implications.

    Science.gov (United States)

    Niggemann, Pascal; Kuchta, Johannes; Beyer, Hans-Konrad; Grosskurth, D; Schulze, Thorsten; Delank, Karl-Stefan

    2011-10-15

    Imaging study with an evaluation of incidences and clinical correlation. To evaluate the incidence of 3 different types of instabilities in patients with spondylolysis or isthmic spondylolisthesis. Clinical findings are correlated with imaging findings, and the imaging findings are analyzed with regard to their clinical implications. Spondylolysis and isthmic spondylolisthesis are common disorders. An unstable slip is the most well-known form of instability, but other forms also exist. However, the incidence of these instabilities and their clinical implications are yet unclear. A total of 140 patients with 141 levels of spondylolysis identified by MRI (magnetic resonance imaging) were included in this study. Using positional MRI, the instability of the slip, an increased angular movement, and movement in the spondylolytic cleft were assessed. On the basis of clinical findings, the patients were classified as presenting with either radicular or nonradicular symptoms. The incidence of the instabilities was recorded and correlated with the incidence of radicular symptoms. Fifteen patients had an unstable slip (anterior instability); 35, an increased angular movement (angular instability); and 34 patients, a movement in the spondylolytic cleft (posterior instability). All forms of instability could be found together. No instability at all was found in 76 patients. Radicular symptoms were found significantly more often in patients with one or more of the described instabilities compared with patients without instability. All 3 described forms of instability are common in spondylolysis or isthmic spondylolisthesis and associated with radicular pain. This finding stresses the value of positional MRI in the evaluation of patients with spondylolysis and isthmic spondylolisthesis, especially if radicular symptoms are present.

  11. Gene-expression analysis of matrix metalloproteinases 1 and 2 and their tissue inhibitors in chronic periapical inflammatory lesions.

    Science.gov (United States)

    Hadziabdic, Naida; Kurtovic-Kozaric, Amina; Pojskic, Naris; Sulejmanagic, Nedim; Todorovic, Ljubomir

    2016-03-01

    Periapical inflammatory lesions have been investigated previously, but understanding of pathogenesis of these lesions (granulomas and radicular cysts) at the molecular level is still questionable. Matrix metalloproteinases (MMPs) are enzymes involved in the development of periapical pathology, specifically inflammation and tissue destruction. To elucidate pathogenesis of periapical granulomas and radicular cysts, we undertook a detailed analysis of gene expression of MMP-1, MMP-2 and their tissue inhibitors, TIMP-1 and TIMP-2. A total of 149 samples were analyzed using real-time PCR (59 radicular cysts, 50 periapical granulomas and 40 healthy gingiva samples as controls) for expression of MMP-1, MMP-2, TIMP-1 and TIMP-2 genes. The determination of best reference gene for expression analysis of periapical lesions was done using a panel of 12 genes. We have shown that β-actin and GAPDH are not the most stable reference controls for gene expression analysis of inflammatory periapical tissues and healthy gingiva. The most suitable reference gene was determined to be SDHA (a succinate dehydrogenase complex, subunit A, flavoprotein [Fp]). We found that granulomas (n = 50) and radicular cysts (n = 59) exhibited significantly higher expression of all four examined genes, MMP-1, MMP-2, TIMP-1, and TIMP-2, when compared to healthy gingiva (n = 40; P periapical inflammatory lesions. Since the abovementioned markers were not differentially expressed in periapical granulomas and radicular cysts, the challenge of finding the genetic differences between the two lesions still remains. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  12. Effect of Cervical Interlaminar Epidural Steroid Injection: Analysis According to the Neck Pain Patterns and MRI Findings

    Science.gov (United States)

    Choi, Ji Won; Lim, Hyung Woo; Lee, Jin Young; Lee, Won Il; Lee, Eun Kyung; Chang, Choo Hoon; Yang, Jae Young

    2016-01-01

    Background It is widely accepted that cervical interlaminar steroid injection (CIESI) is more effective in treating radicular pain than axial neck pain, but without direct comparison. And the differences of effect after CIESI according to MRI findings are inconsistent. In this retrospective study, we evaluated the therapeutic response of CIESI according to pain sites, durations, MRI findings, and other predictive factors altogether, unlike previous studies, which evaluated them separately. Methods The medical records of 128 patients who received fluoroscopy guided CIESI were analyzed. We evaluated the therapeutic response (more than a 50% reduction on the visual analog scale [VAS] by their second visit) after CIESI by (1) pain site; neck pain without radicular pain/radicular pain with or without neck pain, (2) pain duration; acute/chronic (more than 6 month), and (3) findings of MRI; herniated intervertebral disc (HIVD)/spinal stenosis, respectively and altogether. Results Eighty-eight patients (68%) responded to CIESI, and there were no significant differences in demographic data, initial VAS score, or laboratory findings. And there were no significant differences in the response rate relating to pain site, pain duration, or MRI findings, respectively. In additional analysis, acute radicular pain with HIVD patients showed significantly better response than chronic neck pain with spinal stenosis (P = 0.04). Conclusions We cannot find any sole predictive factor of therapeutic response to the CIESI. But the patients having acute radicular pain with HIVD showed the best response, and those having other chronic neck pain showed the worst response to CIESI. PMID:27103964

  13. A estrutura do fígado de micos-leões de cativeiro (Callithrichidae, Primates

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    Thais Lins Brotto

    2005-12-01

    Full Text Available Inúmeros fatores predisponentes podem acarretar doenças auriculares a partir de uma microbiota saprófita. A identificação da microbiota fúngica poderia auxiliar no diagnóstico e tratamento de micoses que possam se tornar patogênicas mediante um desequilíbrio homeostásico. Este trabalho objetivou identificar a microbiota fúngica saprófita no conduto auditivo médio de macacos rhesus (Macaca mulatta clinicamente saudáveis, destinados à pesquisa biomédica. Quarenta macacos rhesus foram divididos em dois grupos. O grupo I foi formado por animais adultos, alojados em gaiolas individuais localizadas em containeres especiais de experimentação com temperatura e umidade controladas. O grupo II, originado da colônia de criação, foi formado por animais jovens, mantidos em ambientes livres, sem controle de temperatura e umidade. O cerúmen do conduto auditivo médio dos animais foi coletado através de swabs. A semeadura das amostras foi feita em placas de Petri contendo Ágar Sabouraud com cloranfenicol 1%, lacradas com fita adesiva e incubadas à temperatura ambiente. Nos 20 animais do grupo I, foi encontrado o seguinte: Aspergillus (80%, Candida (60%, Cladosporium (5% e Rhodotorula (5%. O grupo II apresentou uma diversidade maior de fungos: Candida sp. (95%, Aspergillus (20%, Cladosporium sp. (60%, Penicillium sp. (30%, Rodotorulla sp., (15%, Trychophytum verrucosum (5%, Epidermophyton flocosum (5% e Scopulariopsis sp. (5%. Estes dados serão úteis nos diagnósticos e tratamentos de otites e sugerem que os fatores climáticos podem ser responsáveis pelo grande número de fungos presentes nos animais do grupo II, que se encontram expostos às condições climáticas naturais.

  14. Effectiveness of EDTA and EDTA-T brushingm on the removal of root surface smear layer Efeito do EDTA e EDTA-T aplicado de forma ativa na remoção de "smear layer" de superfícies radiculares

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    José Eduardo Cezar Sampaio

    2003-12-01

    Full Text Available The purpose of this study was to compare the removal of root surface smear layer following active application of EDTA gel and EDTA-T (texapon gel in different concentrations (5%, 10%, 15%, 20% and 24%, using scanning electron microscopy. A total of 220 dentin blocks obtained from the root surfaces of extracted teeth were divided into 3 groups: Group I - (control application of saline solution (n = 20; Group II - EDTA gel (pH 7.0 was applied in the following concentrations: 5%, 10%, 15%, 20% and 24% (n = 100; Group III - EDTA-T gel (pH 7.0 applied in the same concentrations described above (n = 100. The photomicrographs were evaluated by one calibrated examiner using a smear layer removal index and following statistical analysis (Kruskal-Wallis test. The results demonstrated that the specimens treated with EDTA and EDTA-T gel presented a better smear layer removal than the control group (p 0.05. Within the limits of this study, it can be concluded that all treatment modalities effectively removed the smear layer from the root surface. The addition of texapon into the EDTA gel formulation did not increase its effectiveness.O objetivo do presente estudo foi comparar, através de microscopia eletrônica de varredura, o efeito da aplicação de gel de EDTA e de EDTA-T (texapon em diferentes concentrações (5%, 10%, 15%, 20% e 24% na remoção de "smear layer" de superfícies radiculares previamente raspadas com instrumentos manuais. Duzentos e vinte espécimes de superfícies radiculares submetidas à raspagem foram divididos em 3 grupos. Grupo I - (controle solução salina (n = 20; Grupo II - gel de EDTA (pH 7,0 nas concentrações de 5%, 10%, 15%, 20% e 24% (n = 100; Grupo III - gel de EDTA-T (pH 7,0 nas concentrações acima descritas (n = 100. As fotomicrografias obtidas foram avaliadas por um examinador calibrado através da aplicação de um índice de remoção de "smear layer", e os dados foram analisados através de análise estat

  15. PERAWATAN ENDODONTIK KONVENSIONAL PADA GIGI INSISIF LATERAL ATAS DENGAN KISTA RADIKULAR (LAPORAN KASUS

    Directory of Open Access Journals (Sweden)

    Buddiwati Punta

    2015-07-01

    Full Text Available It has been shown that more than 40 percent of the apical radiolucencies are radicular cyst, numerous endodontist claims that from 85 to 90 percent of apical lesions disappear or become reduced in size following conservative endodontic treatment and do not require surgical intervention. Maxillary teeth are more frequently susceptible to trauma and there are numerous morphologic anomalies associated with maxillary incisors especially lateral incisors its call palato-radicular groove (PRG, its caused non vital have been implicated in formation of periapical lesions. Periapical lesions can be cured by conventional endodontic treatment used Ca(OH2 as an intracanal medication. One case with radicular cyst on the maxillary lateral incisors because of trauma 2 years ago will be presented. Fiffteenth months during treatment showed that the cyst reduced in size and symptomless.

  16. Intentional replantation: A viable alternative for management of palatogingival groove

    OpenAIRE

    Vijay Kumar; Ajay Logani; Naseem Shah

    2013-01-01

    Radicular groove is an anatomical malformation that often leads to combined endodontic-periodontic lesions. Treatment of complex groove presents a clinical challenge to the operator. A case of type III palatogingival groove is successfully treated with intentional replantation. With the understanding of the procedure and strict adherence to guidelines improves, practitioners can use intentional replantation as an easy and cost-effective alternative for the management of radicular groove. The ...

  17. Acúmulo de nitrogênio e de fósforo em plantas de milho afetadas pelo suprimento parcial de fósforo às raízes

    Directory of Open Access Journals (Sweden)

    V. M.C. Alves

    1999-06-01

    Full Text Available Com o objetivo de estudar os efeitos do suprimento de fósforo a apenas parte do sistema radicular do milho no acúmulo de nitrogênio e de fósforo, foram realizados dois experimentos em solução nutritiva, utilizando-se a técnica de raízes subdivididas. Após sete dias de crescimento em solução nutritiva completa, plântulas de milho foram transplantadas para vasos que continham 1,6 L de solução nutritiva, sendo as raízes igualmente divididas entre os vasos. No primeiro experimento, foram testadas duas doses de P (0,02 e 0,1 mmol L-1 e a localização de P e N. No segundo experimento, foram testadas duas fontes de N (nitrato e amônio e o mesmo esquema de localização de N e de P do primeiro experimento. Houve maior acúmulo de P na parte aérea quando esse elemento foi fornecido a todo o sistema radicular, comparativamente ao seu fornecimento a apenas metade do sistema radicular. A porção do sistema radicular que recebeu P não foi capaz de suprir adequadamente a porção que não estava em contato com esse elemento, indicando haver problemas de ciclagem interna de P em plantas de milho. Resultados semelhantes foram observados para o N. Houve maior acúmulo de N na parte aérea, quando o P e o N foram fornecidos, conjuntamente, a todo o sistema radicular.

  18. Pulp Calcification in Traumatized Primary Teeth - Classification, Clinical And Radiographic Aspects.

    Science.gov (United States)

    Mello-Moura, Anna Carolina Volpi; Santos, Ana Maria Antunes; Bonini, Gabriela Azevedo Vasconcelos Cunha; Zardetto, Cristina Giovannetti Del Conte; Moura-Netto, Cacio; Wanderley, Marcia Turolla

    The aim of this study was to standardize the nomenclature of pulp alteration to pulp calcification (PC) and to classify it according to type, quantity and location, as well as relate it to clinical and radiographic features. The dental records of 946 patients from the Research and Clinical Center for Dental Trauma in Primary Teeth were studied. Two hundred and fifty PC-traumatized upper deciduous incisors were detected. According to radiographic analysis of the records, 62.5% showed diffuse calcification, 36.3% tube-like calcification, and 1.2% concentric calcification. According to the extension of pulp calcification, the records showed: 80% partial calcification, 17.2% total coronal calcification and partial radicular calcification, and 2.8 % total coronal and radicular calcification. As for location, only 2.4% were on the coronal pulp, 5.2% on the radicular pulp and 92.4% on both radicular and coronal pulp. Regarding coronal discoloration, 54% were yellow and 2% gray. In relation to periradicular changes, 10% showed widened periodontal ligament space, 3.1% internal resorption, 10% external resorption, 10.4% periapical bone rarefaction. Since PC is a general term, it is important to classify it and correlate it to clinical and radiographic changes, in order to establish the correct diagnosis, treatment and prognosis of each case.

  19. Comparision of Immunohistochemical Expression of CD10 in Odontogenic Cysts

    Science.gov (United States)

    Munisekhar, M.S.; Suri, Charu; Rajalbandi, Santosh Kumar; M.R., Pradeep; Gothe, Pavan

    2014-01-01

    Background: Expression of CD10 has been documented in various tumors like nasopharyngeal carcinoma, gastric carcinoma, squamous cell carcinoma, odontogenic tumors. Aim: To evaluate and compare CD10 expression in odontogenic cysts like radicular cyst, dentigerous cyst and odontogenic keratocyst (OKC). Materials and Methods: Total 60 cases were included in the study, comprising 20 cases each of radicular, dentigerous and odontogenic keratocyst. Each case was evaluated and compared for immunohistochemical expression of CD10. Results obtained were statistically analysed using ANOVA test followed by post hoc test Tukey-Kramer Multiple Comparisons Test for continuous variable and Chi-square test for discrete variable. Results: More number of cases showing sub-epithelial stromal CD10 expression were found in OKC among the cysts. Conclusion: CD10 expression was more in OKC compared to radicular and dentigerous cysts. PMID:25584313

  20. Imágenes en odontología clínica. Perlas del esmalte

    Directory of Open Access Journals (Sweden)

    Ignacio Roa

    2017-07-01

    Full Text Available Una mujer de 19 años de edad asiste a la consulta odontológica con indicación de exodoncia del diente 1.8. Luego del acto quirúrgico se examinó el diente y se observó la presencia de dos perlas del esmalte a nivel radicular. Las perlas de esmalte son una anomalía del desarrollo dental, que se presentan como glóbulos ectópicos de esmalte en la superficie radicular. La prevalencia media de perlas de esmalte es 2,69%; teniendo predilección por los molares y rara vez se asocian con premolares, caninos o incisivos. La teoría sugiere que se desarrollan debido a presencia de remanentes de la vaina epitelial radicular (de Hertwig. Adquieren real relevancia debido a su asociación como factor retentivo de placa subgingival y a enfermedad periodontal localizada.

  1. Conformação de monolitos cerâmicos de cordierita via eletroforese

    Directory of Open Access Journals (Sweden)

    Picinini C. A.

    1999-01-01

    Full Text Available A técnica de conformação eletroforética é apresentada como uma alternativa viável para a produção de monolitos cerâmicos de cordierita. A matriz utilizada para a conformação das estruturas cerâmicas contém 109 condutos em paralelo. Os monolitos produzidos foram ensaiados quanto à área superficial, porosidade e resistência mecânica. Demonstra-se que a produção de monolitos por esta via é possível não só quanto sua facilidade de construção como também pela suas características adequadas para a utilização em substratos catalíticos.

  2. The nucleo-electricity and the handling of radioactive materials; La nucleoelectricidad y el manejo de materiales radioactivos

    Energy Technology Data Exchange (ETDEWEB)

    Cuapio Ortiz, Hector [Sindicato Unico de Trabajadores de la Industria Nuclear (SUTIN), Mexico, D. F. (Mexico)

    1997-12-31

    This paper deals on the subject of radioactive materials handling, therefore the author presents primarily a brief resume on the different kinds of low level radioactive wastes that are to be expected from the different industrial and medical applications of the radioactivity, at the same time he presents an estimation of the wastes generated annually in our country. This document contains an annex which deals on the research and development of the nuclear energy, covering subjects such as: The term source, reprocessing of irradiated fuels, quantitative assessment, the thermo-chemical databank, the storage of irradiated fuel elements, the radiation effects; also the projects STRIPA, hydrocoin, SYVAC, ISIRS are described [Espanol] Esta ponencia trata sobre el manejo de materiales radioactivos, por lo tanto el autor presenta primeramente un breve resumen de las clases de residuos de bajo nivel que cabe esperar de las distintas aplicaciones industriales y medicas de la radioactividad, al mismo tiempo presenta una estimacion de los residuos que se generan anualmente en nuestro pais. Este documento contiene un anexo en el que se trata la investigacion y desarrollo de la energia nuclear, abordando temas como: El termino fuente, reelaboracion de combustibles irradiados, estimacion cuantitativa, el banco termoquimico de datos, el almacenamiento de elementos combustibles irradiados, los efectos de la radiacion, tambien se describen los proyectos: STRIPA, hydrocoin, SYVAC, ISIRS

  3. Endodontic-periodontal management of two rooted maxillary lateral incisor associated with complex radicular lingual groove by using spiral computed tomography as a diagnostic aid: a case report.

    Science.gov (United States)

    Gandhi, A; Kathuria, A; Gandhi, T

    2011-06-01

    To present the successful endodontic and periodontal management of a two rooted maxillary lateral incisor tooth with a complex radicular lingual groove and severe periodontal destruction using spiral computed tomography as a diagnostic aid. A 30-year-old male patient presented with a chief complaint of mobility and discharge of pus in an upper front tooth. Clinical examination revealed a sinus tract on the labial gingival surface and a 10-mm-deep periodontal pocket associated with maxillary left lateral incisor tooth. On the lingual side, a groove emerging from cingulum, continuing mesioapically down the lingual aspect of tooth was found. Intraoral periapical radiographs demonstrated a lateral periodontal defect around the mesial aspect and a diffuse radiolucency at the apex of maxillary left lateral incisor tooth. The sinus tract was traced with gutta-percha to the maxillary left lateral incisor that showed an accessory root surrounded by a large radiolucent area. A spiral computed tomographic scan for better understanding of the complicated root canal morphology of the tooth was performed. Based on the clinical, radiographic and spiral computed tomographic findings, a diagnosis of an endo-perio lesion in tooth 22 was made. Management consisted of conventional root canal treatment, radiculoplasty, root resection of accessory root and surgical curettage of the periodontal defect. Follow-up with radiographic examination at 3 months and 1 year was performed. At 1-year recall, the patient was asymptomatic, there was no evidence of the sinus tract and a 3-mm nonbleeding pocket was present in relation to tooth 22. Progression of hard tissue healing was observed in the periapical radiograph taken 1 year postoperatively. The key to achieving favourable results in this particular type of developmental anomaly is accurate diagnosis and treatment planning. The health of the periapical osseous tissues appears to be the provital factor for tooth retention. A favourable outcome

  4. Influência da estrutura do solo na distribuição e na morfologia do sistema radicular do milho sob três métodos de preparo

    Directory of Open Access Journals (Sweden)

    W. M. P. Mello Ivo

    1999-03-01

    Full Text Available O estudo da distribuição de raízes no solo é um método adequado para se detectarem as condições adversas ou não ao seu desenvolvimento, bem como para avaliar o efeito das alterações introduzidas por sistemas de preparo do solo. Sendo assim, o objetivo deste trabalho foi avaliar o efeito de métodos de preparo sobre determinadas características do solo e, por conseguinte, sobre o desenvolvimento do sistema radicular do milho. Para tal, foi utilizado um experimento de campo, instalado em um solo Podzólico Vermelho-Escuro com cinco anos de utilização por preparo convencional, reduzido e semeadura direta, na sucessão aveia + trevo/milho. Para observar as modificações estruturais do solo, usou-se o método do perfil cultural adaptado, acompanhado por determinações de densidade do solo, porosidade total, macro e microporosidade e resistência ao penetrômetro. Os métodos da parede do perfil e do monolito (prancha com pregos foram utilizados para determinar a distribuição e morfologia das raízes. Nos mapas estruturais descritos, observou-se que os modos de organização provocados pelos tratamentos explicaram parcialmente a presença das raízes no perfil. As plantas submetidas à semeadura direta, quando comparadas às do preparo convencional, tiveram o crescimento inicial das raízes diferindo do padrão diagonal normal e, ao final do ciclo, apresentaram raízes com maior raio médio nas profundidades de 10-15 e 25-35 cm e mostraram a densidade de comprimento (cm cm-3 maior na camada superficial (0-5 cm e menor na camada de 10-15 cm. Os sistemas de preparo não afetaram a massa seca de raízes e o rendimento dos grãos de milho.

  5. EFICACIA DE LA COMBINACIÓN DEL INJERTO LIBRE DE TEJIDO CONECTIVO Y LA TÉCNICA DE ALLEN EN EL TRATAMIENTO DE LA RECESIÓN GINGIVAL CLASE II DE MILLER EN PACIENTES DE LA CONSULTA PRIVADA. AREQUIPA. 2012

    OpenAIRE

    LUJAN VALENCIA, SARA

    2015-01-01

    RECESIÓN GINGIVAL CONCEPTO FACTORES ETIOLÓGICOS SÍNTOMAS CLÍNICOS DIAGNÓSTICO CLASIFICACIÓN DE LA RECESIÓN PAPEL DE LA ENCÍA QUERATINIZADA EN LA CONSERVACIÓN DE LA SALUD GINGIVAL CONDICIONES NECESARIAS PARA EL ÉXITO DEL RECUBRIMIENTO RADICULAR TRATAMIENTO DE LAS RECESIONES GINGIVALES TRATAMIENTO CONSERVADOR TRATAMIENTO QUIRÚRGICO INJERTO LIBRE DE TEJIDO CONECTIVO Y LA TÉCNICO DE ALLEN INJERTO LIBRE DE TEJIDO CONECTIVO TÉCNICA QUIRÚRGICA BIOMODIFICACIÓN DE LA SUPERFICIE RADICULAR TÉCNICA DE AL...

  6. Upregulation of the sodium channel NaVβ4 subunit and its contributions to mechanical hypersensitivity and neuronal hyperexcitability in a rat model of radicular pain induced by local DRG inflammation

    Science.gov (United States)

    Xie, Wenrui; Tan, Zhi-Yong; Barbosa, Cindy; Strong, Judith A.; Cummins, Theodore R.; Zhang, Jun-Ming

    2016-01-01

    High frequency spontaneous firing in myelinated sensory neurons plays a key role in initiating pain behaviors in several different models, including the radicular pain model in which the rat lumbar dorsal root ganglia (DRG) are locally inflamed. The sodium channel isoform NaV1.6 contributes to pain behaviors and spontaneous activity in this model. Among all the isoforms in adult DRG, NaV1.6 is the main carrier of TTX-sensitive resurgent Na currents that allow high-frequency firing. Resurgent currents flow after a depolarization or action potential, as a blocking particle exits the pore. In most neurons the regulatory β4 subunit is potentially the endogenous blocker. We used in vivo siRNA mediated knockdown of NaVβ4 to examine its role in the DRG inflammation model. NaVβ4 but not control siRNA almost completely blocked mechanical hypersensitivity induced by DRG inflammation. Microelectrode recordings in isolated whole DRGs showed that NaVβ4 siRNA blocked the inflammation-induced increase in spontaneous activity of Aβ neurons, and reduced repetitive firing and other measures of excitability. NaVβ4 was preferentially expressed in larger diameter cells; DRG inflammation increased its expression and this was reversed by NaVβ4 siRNA, based on immunohistochemistry and Western blotting. NaVβ4 siRNA also reduced immunohistochemical NaV1.6 expression. Patch clamp recordings of TTX-sensitive Na currents in acutely cultured medium diameter DRG neurons showed that DRG inflammation increased transient and especially resurgent current; effects blocked by NaVβ4 siRNA. NaVβ4 may represent a more specific target for pain conditions that depend on myelinated neurons expressing NaV1.6. PMID:26785322

  7. Treatment of a Developmental Groove and Supernumerary Root Using Guided Tissue Regeneration Technique

    Directory of Open Access Journals (Sweden)

    Zahra Alizadeh Tabari

    2016-01-01

    Full Text Available Introduction. The radicular groove is a developmental groove which is usually found on the palatal or lateral aspects of the maxillary incisor teeth. The present case is a maxillary lateral incisor with a small second root and a deep radicular groove. The developmental groove caused a combined periodontal-endodontic lesion. Methods. Case was managed using a combined treatment procedure involving nonsurgical root canal therapy and surgical periodontal treatment. After completion of root canal treatment, guided tissue regeneration (GTR was carried out using decalcified freeze dried bone allograft (DFDBA and a bioabsorbable collagenous membrane. Tooth also was splinted for two months. Results. After 12 months the tooth was asymptomatic. The periapical radiolucency disappeared and probing depth did not exceed 3 mm. Conclusion. Combined treatment procedure involving nonsurgical root canal therapy and surgical periodontal regenerative treatment can be a predictable technique in treating combined endodontic-periodontal lesions caused by radicular groove.

  8. Lateral retroperitoneal transpsoas interbody fusion in a patient with achondroplastic dwarfism.

    Science.gov (United States)

    Staub, Blake N; Holman, Paul J

    2015-02-01

    The authors present the first reported use of the lateral retroperitoneal transpsoas approach for interbody arthrodesis in a patient with achondroplastic dwarfism. The inherent anatomical abnormalities of the spine present in achondroplastic dwarfism predispose these patients to an increased incidence of spinal deformity as well as neurogenic claudication and potential radicular symptoms. The risks associated with prolonged general anesthesia and intolerance of significant blood loss in these patients makes them ideal candidates for minimally invasive spinal surgery. The patient in this case was a 51-year-old man with achondroplastic dwarfism who had a history of progressive claudication and radicular pain despite previous extensive lumbar laminectomies. The lateral retroperitoneal transpsoas approach was used for placement of interbody cages at L1/2, L2/3, L3/4, and L4/5, followed by posterior decompression and pedicle screw instrumentation. The patient tolerated the procedure well with no complications. Postoperatively his claudicatory and radicular symptoms resolved and a CT scan revealed solid arthrodesis with no periimplant lucencies.

  9. Influência das concavidades radiculares nas perdas clínicas de inserção, detectadas no exame clínico periodontal inicial The influence of root concavities on clinical attachment loss diagnosed at the initial evaluation of periodontal patients

    Directory of Open Access Journals (Sweden)

    Francisco Emilio PUSTIGLIONI

    1999-12-01

    Full Text Available O propósito deste estudo foi estabelecer a influência das concavidades radiculares na perda clínica de inserção (PCI diagnosticada no exame clínico periodontal inicial. Os dados de PCI foram obtidos dos primeiros e segundos pré-molares, caninos, incisivos laterais e centrais superiores e inferiores, de 163 pacientes. Os dados foram coletados das fichas periodontais dos pacientes que procuraram a Clínica do curso de Pós-Graduação em Periodontia da FOUSP. Foi realizada sondagem em todos os dentes para que se obtivesse as seguintes medidas: distância da linha esmalte cemento à margem gengival, profundidade clínica de sondagem (PCS nos sítios distovestibular (DV, centrovestibular (CV, mesiovestibular (MV, distolingual (DL, centrolingual (CL e mesiolingual (ML. Os dados foram incluídos no estudo quando pelo menos um dos sítios apresentasse PCI ³ 4 mm. Após a análise estatística (Friedman ANOVA test CV e CL mostraram valores de PCI estatisticamente menores para todos os dentes superiores e inferiores. Clinicamente CV mostrou os menores valores de perda clínica de inserção entre todos os dentes analisados, seguido de CL. Embora, baseados em nossos resultados, não exista correlação estatística entre PCI e a presença de concavidades radiculares, não podemos subestimar as últimas no exame clínico inicial, diagnóstico, prognóstico, planejamento cirúrgico e na fase de controle e manutenção do tratamento periodontal.The purpose of this study was to establish the influence of root concavities on clinical attachment loss (CAL that was diagnosed at the initial evaluation of periodontal patients. CAL data were analyzed in the following teeth of 163 patients: upper and lower second and first bicuspids, cuspids, lateral and central incisors. Data were retrieved from the initial dental chart of patients seeking treatment at the Periodontics Graduate Clinic, School of Dentistry, University of São Paulo. Probing was accomplished

  10. Resistencia de unión del sistema de postes REBILDA® con la dentina intrarradicular

    OpenAIRE

    Ross, Daphne; Filloy Esna, Carlos E.; Ramírez-Barrantes, Juan Carlos

    2017-01-01

    ResumenActualmente existe controversia en la literatura acerca de la efectividad clínica y adhesiva con respecto a los sistemas adhesivos de refuerzo radicular. Así, el objetivo de este estudio fue evaluar la resistencia de unión mediante la prueba de Push-Out entre el sistema de postes Rebilda® y la dentina intraradicular. Para esto, se utilizaron 28 dientes unirradiculares, que fueron cortados y padronizados en 16 mm. Los segmentos radiculares fueron sometidos a confección de tratamiento en...

  11. Management of spent fuel; Gestion del combustible irradiado

    Energy Technology Data Exchange (ETDEWEB)

    Estrampes Blanch, J.

    2015-07-01

    The management of irradiated fuel has become one of the materials that more time and resources deals within their responsibilities that also cover other areas such as the design of the new cycles, supply of fresh fuel, tracking operation cycles and strategies of power changes. (Author)

  12. Comparative analysis of human and bovine teeth: radiographic density

    Directory of Open Access Journals (Sweden)

    Jefferson Luis Oshiro Tanaka

    2008-12-01

    Full Text Available Since bovine teeth have been used as substitutes for human teeth in in vitro dental studies, the aim of this study was to compare the radiographic density of bovine teeth with that of human teeth to evaluate their usability for radiographic studies. Thirty bovine and twenty human teeth were cut transversally in 1 millimeter-thick slices. The slices were X-rayed using a digital radiographic system and an intraoral X-ray machine at 65 kVp and 7 mA. The exposure time (0.08 s and the target-sensor distance (40 cm were standardized for all the radiographs. The radiographic densities of the enamel, coronal dentin and radicular dentin of each slice were obtained separately using the "histogram" tool of Adobe Photoshop 7.0 software. The mean radiographic densities of the enamel, coronal dentin and radicular dentin were calculated by the arithmetic mean of the slices of each tooth. One-way ANOVA demonstrated statistically significant differences for the densities of bovine and human enamel (p 0.05. Based on the results, the authors concluded that: a the radiographic density of bovine enamel is significantly higher than that of human enamel; b the radiodensity of bovine coronal dentin is statistically lower than the radiodensity of human coronal dentin; bovine radicular dentin is also less radiodense than human radicular dentin, although this difference was not statistically significant; c bovine teeth should be used with care in radiographic in vitro studies.

  13. Immunohistochemical evaluation of podoplanin in odontogenic tumours & cysts using anti-human podoplanin antibody.

    Science.gov (United States)

    Singhal, Namrata; Khanduri, Nitin; Kurup, Deepak; Gupta, Brijesh; Mitra, Pranjan; Chawla, Roshani

    2017-01-01

    Odontogenic Cysts & tumors originate through some aberration from the normal pattern of odontogenesis. Ameloblastoma is one of the most frequent intraosseous odontogenic tumors. However it is no longer appropriate to use the diagnosis of ameloblastoma without specifying the type. Varied-clinical entities of ameloblastoma differ in their biologic behaviour. Odontogenic cysts like dentigerous and radicular cysts are less aggressive in nature than odontogenic tumors. Recently, podoplanin commonly used as a lymphatic endothelial marker in cancers has recently been found to play a possible role in odontogenic tumorigenesis also. Therefore the purpose of this study was to immunohistochemically analyse the expression of podoplanin in ameloblastomas, KCOTs, dentigerous cysts, radicular cysts & dental follicles. Paraffin-embedded tissue specimens of 15 Ameloblastomas (7 follicular, 6 unicystic, 2 desmoplastic),10KCOTs, 5 dentigerous cysts, 5 radicular cysts & 5 dental follicles were immunohistochemically examined using antibody against podoplanin. All ameloblastomas displayed podoplanin expression in ameloblast-like cells of the epithelial islands while the stellate-reticulum like cells exhibited no or weak immunostaining. Expression of podoplanin in KCOTs was strongly positive in the cells of the basal and suprabasal layers & odontogenic epithelial nests. Positive immunoreaction for podoplanin was observed in the inflammatory radicular cysts and inflamed dentigerous cyst only and negative or weak expression in the lining epithelium of uninflamed dentigerous cysts and dental follicles. Our results suggest that podoplanin can be used as a potential proliferative marker to observe the aggressive behaviour of ameloblastomas and KCOTs.

  14. Intraoperative use of epidural methylprednisolone or bupivacaine for postsurgical lumbar disectomy pain relief: A randomized, placebo-controlled trial

    International Nuclear Information System (INIS)

    Lotfinia, I.; Khallaghi, E.; Meshkini, A.; Shakeri, M.; Shima, M.; Safaeian, A.

    2007-01-01

    Many patients with lumbar disc surgery experience postoperative back and radicular pain, delaying hospital discharge and resumption of normal activity. Some surgeons have used intraoperative epidural corticosteroids and local anesthetics to decrease pain following surgery for a herniated lumbar disc. Controversies still exist regarding the benefits of these drugs. The present study was meant to compare the effects of the intraoperative administration of epidural methylprednisolone and bupivacaine with that of normal saline (placebo) in lumbar disc surgery for postoperative pain control. One hundred fifty patients with single level herniated nucleus pulposus (L4-L5 or L5-S1), which was refractory to 6 weeks of conservative management, were divided randomly in three groups. A standard hemipartial lamimectomy and discectomy was performed on all patients. At the end of the surgery, before the closure of fascia, 40 mg methylprednisoslone with 3 mL normal saline for group1, 2 mL bupivacaine 5% with 2mL normal saline for group 2 and 4 mL normal saline for group 3 were stilled on to the epidural and exposed nerve root. Postoperative back and radicular pain intensity was assessed by a visual analogue scale (VAS) before and at 24, 48, 72 and 96 hours after surgery. There was no significant difference in back and radicular pain intensity between the three groups. Introperative administration of epidural methylprednisolone or bupivacaine does not relieve postoperative back and radicular pain. (author)

  15. Densidade do sistema radicular da bananeira 'Pacovan' sob irrigação por aspersão Root system density of 'Pacovan' banana plant under sprinkler irrigation

    Directory of Open Access Journals (Sweden)

    Raimundo Lacerda Filho

    2004-12-01

    Full Text Available O presente trabalho foi realizado no município de Governador Dix-Sept Rosado, microrregião Açu-Apodi, no Estado do Rio Grande do Norte, tendo como objetivo verificar os efeitos do sistema de irrigação por aspersão na densidade do sistema radicular da bananeira 'Pacovan'. O delineamento experimental utilizado foi o de blocos casualizados, em esquema de parcelas subdivididas, com cinco repetições. Os tratamentos foram duas amostragens por planta, realizadas do lado contrário ao da emissão da inflorescência, formando um ângulo de 45º. Em cada amostragem, foram realizadas quatro retiradas do material de solo a distâncias de 20 cm, sendo a primeira a 30 cm e a última a 90 cm do pseudocaule. A análise dos dados demonstrou que ocorreu redução linear no peso fresco e na densidade de comprimento de raízes da bananeira em função da profundidade do solo. Em relação à distância do pseudocaule da bananeira, tanto o peso fresco quanto a densidade de comprimento de raízes não mostraram resultados significativos.The present work was conducted at Governador Dix-Sept Rosado County, microregion Açu-Apodi, in the state of Rio Grande do Norte and its objective was to study the effects of sprinkler irrigation system on the density of the root system of 'Pacovan' banana plants. The experiment followed a completely randomized block design, in a split-plot scheme, with five replications. The treatments were two sampling groups, taken per plant, and in the opposite side of the inflorescence emission, forming between them an angle of 45°. In each sampling group, four samples containing soil material were collected at intervals of 20 cm, so the first was distant 30 cm and the last 90 cm from the pseudostem. Data analysis showed that occurred a linear reduction in root fresh weight and in lenght of roots density, in replications to soil depth. For the distance from the plant pseudostem there were no significant differences between samples, both

  16. Mapeamento da safena interna com ecocolor Doppler no pré-operatório de cirurgia de revascularização mioc��rdica

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    BARROS Fanilda Souto

    1999-01-01

    Full Text Available INTRODUÇÃO: O advento do ecocolor Doppler vascular tornou possível informar o estado anatômico e funcional da safena interna ao cirurgião cardiovascular, no pré-operatório da cirurgia de revascularização miocárdica, sem riscos para o paciente ou para o conduto venoso. O objetivo do estudo foi, juntamente com o cirurgião, avaliar a utilidade do mapeamento da safena interna no pré-operatório. CASUÍSTICA E MÉTODOS: Foram estudados, entre março de 1995 e maio de 1998, 208 extremidades inferiores de 104 pacientes selecionados para cirurgia de revascularização miocárdica. O critério utilizado para a seleção da safena foi a safena patente e o diâmetro maior ou igual a 3,0 mm, utilizando os aparelhos de ultra-sonografia ATL - HDI 3000 e Acuson-Sequóia 512. RESULTADOS: Dentre as 208 extremidades estudadas, 186 (89,4% das safenas preenchiam os critérios e a análise do cirurgião estava de acordo com a descrição do ecocolor Doppler. Dezessete (8,2% não preenchiam os critérios e, em 5 (2,4% ,o exame foi compatível com safenectomia radical. Das 17 safenas consideradas não apropriadas, 2 foram exploradas cirurgicamente, sendo a análise do cirurgião concordante com o ultra-som. CONCLUSÃO: Os autores concluem que o ecocolor Doppler, sendo um método diagnóstico não invasivo, pode ser útil no mapeamento da safena interna no pré-operatório de revascularização miocárdica devido à sua capacidade de identificar e selecionar com segurança o vaso a ser utilizado como conduto vascular, o que permite ao cirurgião cardíaco o planejamento cirúrgico.

  17. Participação das metaloproteinases da matriz na etiopatogenia dos cistos odontogênicos

    OpenAIRE

    Silveira,Éricka Janine Dantas da; Piva,Marta Rabello; Galvão,Hébel Cavalcanti; Souza,Lélia Batista de; Freitas,Roseana de Almeida

    2007-01-01

    Visando contribuir para um melhor entendimento do crescimento das lesões odontogênicas e do papel das metaloproteinases da matriz (MMPs) nesse processo, realizou-se uma análise da expressão imuno-histoquímica das MMPs -1, -2 e -9, em 15 cistos radiculares (CR), 10 cistos radiculares residuais (CRR), 10 cistos dentígeros (CD) e 10 ceratocistos odontogênicos (CO). Analisou-se, no epitélio e no mesênquima, a imunopositividade das lesões, atribuindo-se os escores: (-) ausência de marcação, (+) ma...

  18. Computerized tomography in the diagnosis of degenerative vertebral diseases

    International Nuclear Information System (INIS)

    Bokarev, V.S.; Savchenko, A.P.; Ternovoj, S.K.

    1989-01-01

    CT and roentgenography were used for the investigation of 78 patients with the radicular syndrome. The state of the intervertebral disks, intervertebral joints and cerebrospinal canal in degenerative vertebral diseases was assessed. CT permits the detection of hernia, protrusion of the intervertebral disks, deformity of the intervertebral joints, and the narrowing of the cerebrospinal canal as a result of degenerative changes, as well as establishing the cause of the affection of neural structures in the cerebrospinal canal, radicular holes. CT possesses some advantages over roentgenography in the diagnosis of degenerative vertebral diseases

  19. Intentional replantation: A viable alternative for management of palatogingival groove

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    Vijay Kumar

    2013-01-01

    Full Text Available Radicular groove is an anatomical malformation that often leads to combined endodontic-periodontic lesions. Treatment of complex groove presents a clinical challenge to the operator. A case of type III palatogingival groove is successfully treated with intentional replantation. With the understanding of the procedure and strict adherence to guidelines improves, practitioners can use intentional replantation as an easy and cost-effective alternative for the management of radicular groove. The paper presents a brief review of palatogingival groove and highlights an easy and predictable alternative for its management.

  20. Estudio in vitro de la anatomía interna del primer molar superior mediante el proceso de diafanización

    OpenAIRE

    Montesinos Rivera, Mayra Vanessa

    2013-01-01

    Diferentes estudios corroboran la complejidad anatómica del sistema de conductos radiculares por la presencia de múltiples foránemes, deltas apicales, conductos accesorios y más variaciones. El propósito de este estudio in vitro fue identificar la anatomía interna del sistema de conductos radiculares de 84 primeros molares superiores permanentes, determinando el número de conductos por raíz y el tipo de conducto según la clasificación de Vertucci, así como la prevalencia del conducto mesioves...

  1. Evaluation of Mast Cell and Blood Vessel Density in Inflammatory Periapical Lesions

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    Safoura Seifi

    2012-01-01

    Full Text Available Introduction: Radicular cystsand periapical granulomas are the most common periapical inflammatory lesions. However, the role of cellular immunity and microvessels in their pathogenesis remains unknown. The aim of this study was to evaluate the mast cell density (MCD, mircovessel density (MVD and investigating the correlation between their densities with each other in the above mentioned lesions.Materials & Methods: In this descriptive cross-sectional study, 40 paraffin blocks of mentioned lesions were selected from achieves of School of Dentistry, Babol University of Medical Sciences. Three sections were prepared from each block and stained by hematoxylin-eosin, toluidine blue, and immunohistochemically for CD34 to determine the score of inflammation, presence of mast cells and degranulatedmast cells (DMCs, and MVD, respectively. The correlation between MCD and either inflammatory infiltrate or MVD was evaluated. Data analyzed by t student, Mann-Whitney and Spearman test.Results: Mast cells were present in all periapical inflammatory lesions; 15.4±14.8 for MCD, 7.2±6.1 for DMCs, and the ratio of DMCs to total number of MCs was 0.354±0.166 and 14.8+4.44 for blood vessel density in radicular cyst and 8.52±6.75, 2.91±2.1, 0.196±0.194 and 13±8.02 in periapical granulomas, respectively. There was a positive correlation between MCD and MVD in radicular cyst (P=0.03, r=0.341, but not in periapical granulomas (P=0.6, r=0.124. MCD and MVD increased with the score of inflammation in radicular cyst (P=0.001, r=0.7 and periapical granuloma (P=0.012, r=0.54.Conclusion: Mast cells and microvessels play a role in pathogenesis of periapical inflammatory lesions. In this study, the density of mast cells and DMCs in radicular cyst was higher than periapical granulomas, but no difference was observed regarding MVD in periapical inflammatory lesions. It seems that the relationship between MCD and MVD is different based on the clinical stage of periapical

  2. Mutagénesis inducida en microbulbos de Allium sativum L.

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    Adriana Pardo Roldán

    2015-07-01

    Full Text Available Se estableció un protocolo de mutagénesis en microbulbos de ajo (Allium sativum L. clon Boconó cultivado in vitro. Para el efecto se realizaron dos ensayos, uno de radiosensibilidad para establecer la dosimetría apropiada de radiación gamma y otro de mutagénesis para determinar el comportamiento de los materiales hasta la etapa de almacenamiento. En el primero los microbulbos fueron tratados con cuatros dosis de radiación gamma (6, 8, 10 y 12 Krad, más un control. Para establecer la dosis óptima se consideró la sobrevivencia del 50% de los microbulbos (DL50. Se empleó un diseño de bloques al azar con cinco tratamientos y 20 repeticiones por tratamiento. En el ensayo mutagénico los microbulbos fueron irradiados con 8 y 10 Krad y almacenados durante 45 días a 10 °C en condiciones de oscuridad En este caso se utilizó un diseño de bloques al azar con tres tratamientos (0, 8 y 10 Krad y 20 repeticiones por tratamiento. En ambos ensayos, los microbulbos irradiados con 8 y 10 Krad registraron los mayores promedios para peso y diámetro, lo cual permite concluir que estas dosis son adecuadas para favorecer la producción de mutantes con características agronómicas deseables en el clon Boconó

  3. Quantitative assessment of silver-stained nucleolar organizer region in odontogenic cysts to correlate the growth and malignant potentiality.

    Science.gov (United States)

    Biswas, Sailendra Nath; Paul, R R; Ray, Jay Gopal; Majumdar, Sumit; Uppala, Divya

    2017-01-01

    The most common and important odontogenic cyst involving jaws is the odontogenic keratocyst (OKC) or primordial cyst, the dentigerous cyst and the radicular cyst. These cysts all though do not show similar behavior, they all have the potentiality to recur. Silver nitrate staining of the nucleolar organizer regions (AgNORs) of the benign and malignant lesions is becoming very useful as a diagnostic indicator. Thus, the aim of this study is to assess the diagnostic potential of AgNORs in the cystic epithelium of common odontogenic cysts. Archived specimens of odontogenic cysts were stained with hematoxylin and eosin stain and AgNOR stain. The comparative evaluation of the AgNOR counts was done among the three varieties of odontogenic cysts, i.e., radicular cysts, dentigerous cysts and OKC and were observed that the mean for OKC was significantly higher than that of radicular cyst. Therefore, AgNor could be used as an efficient tool for comparative evaluation of microscopic features such as epithelial thickness, surface keratinization and mural proliferation in dentigerous cyst to that of the AgNOR count.

  4. c-Myc oncogene expression in selected odontogenic cysts and tumors: An immunohistochemical study

    Science.gov (United States)

    Moosvi, Zama; Rekha, K

    2013-01-01

    Aim: To investigate the role of c-Myc oncogene in selected odontogenic cysts and tumors. Materials and Methods: Ten cases each of ameloblastoma, adenomatoid odontogenic tumor (AOT), odontogenic keratocyst (OKC), dentigerous cyst, and radicular cyst were selected and primary monoclonal mouse anti-human c-Myc antibody was used in a dilution of 1: 50. Statistical Analysis was performed using Mann Whitney U test. Results: 80% positivity was observed in ameloblastoma, AOT and OKC; 50% positivity in radicular cyst and 20% positivity in dentigerous cyst. Comparison of c-Myc expression between ameloblastoma and AOT did not reveal significant results. Similarly, no statistical significance was observed when results of OKC were compared with ameloblastoma and AOT. In contrast, significant differences were seen on comparison of dentigerous cyst with ameloblastoma and AOT and radicular cyst with AOT. Conclusion: From the above data we conclude that (1) Ameloblastoma and AOT have similar proliferative potential and their biologic behavior cannot possibly be attributed to it. (2) OKC has an intrinsic growth potential which is absent in other cysts and reinforces its classification as keratocystic odontogenic tumor. PMID:23798830

  5. EFECTO DE LA INOCULACIÓN DE Azospirillum halopraeferens Y Bacillus amyloliquefaciens EN LA GERMINACIÓN DE Prosopis chilensis

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    J.A. Villegas-Espinoza

    2009-07-01

    Full Text Available Las Bacterias Promotoras de Crecimiento de Plantas (BPCP, son microorganismos fijadores de nitrógeno atmosférico y a su vez producen hormonas que aprovechan las plantas para llevar a cabo su desarrollo. Es importante la utilización de microorganismos benéficos para reducir la fertilización química. La investigación científica ha incrementado la busqueda y aislamiento de BPCP de regiones especificas como son las zonas áridas, ya que estos microorganismos estan adaptados a ambientes extremos. La especie Prosopis chilensis esta siendo utilizada para reforestación de escuelas, parques y también como ornato; para reproducir esta planta se esta utilizando fertilizantes químicos que son dañinos al medio ambiente. El objetivo de la presente investigación, consistió en analizar el efecto promotor de las bacterias promotoras del crecimiento vegetal Bacillus amyloliquefaciens y Azospirillum halopraeferens en la germinación y emergencia del mezquite chileno (P. chilensis bajo cuatro concentraciones salinas (0, 0.25, 0.5 y 0.75 M de NaCl. Se obtuvieron semillas de mezquite chileno de la región de Santa Ana, Sonora, México. Bajo condiciones de laboratorio se evaluó el porcentaje de germinación, tasa de germinación, altura, longitud radicular de plántula, peso fresco de plántula número de células bacterianas adheridas al sistema radicular. Bajo condiciones de invernadero, las variables evaluadas fueron porcentaje de emergencia, tasa de emergencia, altura y longitud radicular, peso fresco y seco de planta, peso fresco y seco de raíz, número de células bacterianas adheridas al sistema radicular. Los resultados indican que, bajo condiciones in vitro, el porcentaje y tasa de germinación disminuyó conforme la salinidad se incrementa. Sin embargo, estas variables fueron afectadas positivamente por A. halopraeferens y B. amyloliquefaciens en comparación del tratamiento

  6. Tumor necrosis factor-α blockade in recurrent and disabling chronic sciatica associated with post-operative peridural lumbar fibrosis: results of a double-blind, placebo randomized controlled study.

    Science.gov (United States)

    Nguyen, Christelle; Palazzo, Clémence; Grabar, Sophie; Feydy, Antoine; Sanchez, Katherine; Zee, Nathalie; Quinquis, Laurent; Ben Boutieb, Myriam; Revel, Michel; Lefèvre-Colau, Marie-Martine; Poiraudeau, Serge; Rannou, François

    2015-11-19

    The aim of this study was to assess the efficacy and safety of tumor necrosis factor (TNF)-α inhibition with infliximab (IFX) in treating recurrent and disabling chronic sciatica pain associated with post-operative peridural lumbar fibrosis. A double-blind, placebo-controlled study randomized 35 patients presenting with sciatica pain associated with post-operative peridural lumbar fibrosis to two groups: IFX (n = 18), a single intravenous injection of 3 mg/kg IFX; and placebo (n = 17), a single saline serum injection. The primary outcome was a 50 % reduction in sciatica pain on a visual analog scale (VAS) at day 10. Secondary outcomes were radicular and lumbar VAS pain at day 0 and radicular and lumbar VAS pain, Québec disability score, drug-sparing effect and tolerance at days 10, 30, 90, and 180. At day 10, the placebo and IFX groups did not differ in the primary outcome (50 % reduction in sciatica pain observed in three (17.6 %) versus five (27.8 %) patients; p = 0.69). The number of patients reaching the patient acceptable symptom state for radicular pain was significantly higher in the placebo than IFX group after injection (12 (70.6 %) versus five (27.8 %) patients; p = 0.01). The two groups were comparable for all other secondary outcomes. Treatment with a single 3 mg/kg IFX injection for post-operative peridural lumbar fibrosis-associated sciatica pain does not significantly reduce radicular symptoms at day 10 after injection. ClinicalTrials.gov NCT00385086 ; registered 4 October 2006 (last updated 15 October 2015).

  7. Influência da intensidade luminosa no desenvolvimento de mudas de Jatropha curcas L.

    Directory of Open Access Journals (Sweden)

    Fabio Santos Matos

    2011-10-01

    Full Text Available Objetivou-se identificar, por meio de parâmetros fisiológicos, o adequado ambiente luminoso para produção de mudas de Jatropha curcas L, avaliando a plasticidade da planta às variações da disponibilidade de luz. O delineamento experimental foi o inteiramente casualizado com três tratamentos (plantas cultivadas a pleno sol interceptando 100 % da radiação solar “T1”, plantas em sombrite interceptando 50 % da radiação solar “T2” e plantas cultivadas em sombrite interceptando 25 % da radiação solar “T3” e cinco repetições. Aos 50 dias após emergência foram analisadas as seguintes variáveis: biomassa total, razão de massa radicular, razão de massa caulinar, razão de massa foliar, razão massa seca da folha/sistema radicular, razão parte aérea/sistema radicular, área foliar específica, teor relativo de água, altura da planta, número de folhas, diâmetro do caule, concentrações de clorofilas e carotenóides, razão clorofila/carotenóide e índice de plasticidade fenotípica para todas as variáveis. As mudas desenvolvidas a pleno sol apresentaram-se mais vigorosas e com maior número de folhas, sistema radicular robusto e elevada biomassa total. As plantas produzidas nesta condição são as mais indicadas para plantio a campo.

  8. DNA Methylation of MMP9 Is Associated with High Levels of MMP-9 Messenger RNA in Periapical Inflammatory Lesions.

    Science.gov (United States)

    Campos, Kelma; Gomes, Carolina Cavalieri; Farias, Lucyana Conceição; Silva, Renato Menezes; Letra, Ariadne; Gomez, Ricardo Santiago

    2016-01-01

    Matrix metalloproteinases (MMPs) are the major class of enzymes responsible for degradation of extracellular matrix components and participate in the pathogenesis of periapical inflammatory lesions. MMP expression may be regulated by DNA methylation. The purpose of the present investigation was to analyze the expression of MMP2 and MMP9 in periapical granulomas and radicular cysts and to test the hypothesis that, in these lesions, their transcription may be modulated by DNA methylation. Methylation-specific polymerase chain reaction was used to evaluate the DNA methylation pattern of the MMP2 gene in 13 fresh periapical granuloma samples and 10 fresh radicular cyst samples. Restriction enzyme digestion was used to assess methylation of the MMP9 gene in 12 fresh periapical granuloma samples and 10 fresh radicular cyst samples. MMP2 and MMP9 messenger RNA transcript levels were measured by quantitative real-time polymerase chain reaction. All periapical lesions and healthy mucosa samples showed partial methylation of the MMP2 gene; however, periapical granulomas showed higher MMP2 mRNA expression levels than healthy mucosa (P = .014). A higher unmethylated profile of the MMP9 gene was found in periapical granulomas and radicular cysts compared with healthy mucosa. In addition, higher MMP9 mRNA expression was observed in the periapical lesions compared with healthy tissues. The present study suggests that the unmethylated status of the MMP9 gene in periapical lesions may explain the observed up-regulation of messenger RNA transcription in these lesions. Copyright © 2016 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  9. Efficacy of conventional and digital radiographic imaging methods for diagnosis of simulated external root resorption Eficácia dos métodos radiográficos convencional e digital no diagnóstico de reabsorções radiculares simuladas

    Directory of Open Access Journals (Sweden)

    Vânia Portela Ditzel Westphalen

    2004-06-01

    Full Text Available This in vitro study evaluated and compared the efficacy of conventional (Kodak F-speed (Insight, Kodak and a digital (DRS Gnatus System, Gnatus radiographic imaging for diagnosis of simulated external root resorption cavities. Human mandibles containing teeth were covered with bovine muscle slices in order to simulate the soft tissues. Nine teeth out of each group of teeth were investigated. Initially, three periapical radiographs of each tooth were taken using a tube shift technique with mesial and distal angulations in both methods. All teeth were subsequently extracted and had 0.7 and 1.0-mm deep cavities prepared on their buccal, mesial and distal surfaces at the cervical, middle and apical thirds. Steel cylinder burs (DORMER® - HSS with 0.7 and 1.0-mm diameter were used. Each tooth was replaced on its socket and new radiographs were taken. Three examiners, an endodontist (1, a radiologist (2 and a general dentist (3, evaluated the images. Results were compared by z-test and showed a higher number of cavities detected by the digital method compared to the conventional, regardless of the deepness of the cavity. In decreasing order, examiners 2, 3 and 1 exhibited different potentials of detection of cavities with the conventional method. Examiners 1 and 3 exhibited superior potential than examiner 2 for detection of cavities of different sizes with the digital method.O presente estudo visou avaliar e comparar, in vitro, a eficácia dos métodos radiográficos convencional (filmes de grupos de sensibilidade E/F Kodak Insight e digital (Sistema Gnatus DRS, no diagnóstico de cavidades simulando reabsorções radiculares externas, em dentes contidos em mandíbulas humanas secas com músculo bovino simulando o tecido mole. As variáveis consideradas foram: tamanhos das cavidades e examinadores envolvidos. Foram utilizadas nove unidades de cada grupo dentário, incisivos (central e lateral, caninos, pré-molares e molares, sem lesões periapicais

  10. Study of the areas and thicknesses of mesiobucal root canals prepared by three endodontic techniques Estudo das áreas e espessuras de canais radiculares mésio-vestibulares preparados por três técnicas endodônticas

    Directory of Open Access Journals (Sweden)

    Isa Geralda Teixeira Constante

    2007-06-01

    , Escalonada e Seriada. Foram selecionados 45 molares inferiores humanos extraídos, com curvaturas radiculares superiores a 25°, que foram divididos em três grupos para cada técnica estudada e subdivididos em três subgrupos de acordo com a posição da curvatura ao longo da raiz: cervical, mediana ou apical. Após cirurgia de acesso e odontometria, os canais foram preenchidos com contraste radiológico de sulfato de Bário a 100% e os dentes então foram radiografados por um sistema de radiografia digital direta, utilizando-se um aparato capaz de manter as amostras na mesma posição espacial nas diferentes tomadas radiográficas. Após a realização das técnicas endodônticas supracitadas, os dentes foram novamente preenchidos com o sulfato de Bário e radiografados nas mesmas condições anteriores. As imagens digitais pré e pós-operatórias foram então analisadas em dois programas computadorizados, o AutoCAD 2004 e o CorelDraw 10, para verificar, respectivamente, as áreas e as alterações horizontais ocorridas nas paredes internas e externas dos canais radiculares. Apesar de não ter havido diferenças significantes entre as técnicas na análise estatística, em uma análise descritiva a técnica do Preparo Progressivo mostrou-se mais regular, uniforme e eficaz.

  11. Regeneración de tejido periodontal in vitro con células madre pluripotenciales de la pulpa dental (DPPSC) del tercer molar

    OpenAIRE

    Hategan, Iulia Emilia

    2016-01-01

    El periodonto está formado por varios tejidos: la encía, el ligamento periodontal, el cemento radicular y el hueso alveolar. El periodonto tiene dos funciones fundamentales: protección e inserción. La función de protección la realizan la encía y el epitelio de unión, mientras que la función de inserción se desempeña a través del ligamento periodontal, el cemento radicular y el hueso alveolar.- El ligamento periodontal es un tejido celular altamente vascularizado que rodea la raíz del dien...

  12. Spinal pain

    International Nuclear Information System (INIS)

    Izzo, R.; Popolizio, T.; D’Aprile, P.; Muto, M.

    2015-01-01

    Highlights: • Purpose of this review is to address the current concepts on the pathophysiology of discogenic, radicular, facet and dysfunctional spinal pain, focusing on the role of the imaging in the diagnostic setting, to potentially address a correct approach also to minimally invasive interventional techniques. • Special attention will be given to the discogenic pain, actually considered as the most frequent cause of chronic low back pain. • The correct distinction between referred pain and radicular pain contributes to give a more correct approach to spinal pain. • The pathogenesis of chronic pain renders this pain a true pathology requiring a specific management. - Abstract: The spinal pain, and expecially the low back pain (LBP), represents the second cause for a medical consultation in primary care setting and a leading cause of disability worldwide [1]. LBP is more often idiopathic. It has as most frequent cause the internal disc disruption (IDD) and is referred to as discogenic pain. IDD refers to annular fissures, disc collapse and mechanical failure, with no significant modification of external disc shape, with or without endplates changes. IDD is described as a separate clinical entity in respect to disc herniation, segmental instability and degenerative disc desease (DDD). The radicular pain has as most frequent causes a disc herniation and a canal stenosis. Both discogenic and radicular pain also have either a mechanical and an inflammatory genesis. For to be richly innervated, facet joints can be a direct source of pain, while for their degenerative changes cause compression of nerve roots in lateral recesses and in the neural foramina. Degenerative instability is a common and often misdiagnosed cause of axial and radicular pain, being also a frequent indication for surgery. Acute pain tends to extinguish along with its cause, but the setting of complex processes of peripheral and central sensitization may influence its evolution in chronic

  13. Spinal pain

    Energy Technology Data Exchange (ETDEWEB)

    Izzo, R., E-mail: roberto1766@interfree.it [Neuroradiology Department, A. Cardarelli Hospital, Naples (Italy); Popolizio, T., E-mail: t.popolizio1@gmail.com [Radiology Department, Casa Sollievo della Sofferenza Hospital, San Giovanni Rotondo (Fg) (Italy); D’Aprile, P., E-mail: paoladaprile@yahoo.it [Neuroradiology Department, San Paolo Hospital, Bari (Italy); Muto, M., E-mail: mutomar@tiscali.it [Neuroradiology Department, A. Cardarelli Hospital, Napoli (Italy)

    2015-05-15

    Highlights: • Purpose of this review is to address the current concepts on the pathophysiology of discogenic, radicular, facet and dysfunctional spinal pain, focusing on the role of the imaging in the diagnostic setting, to potentially address a correct approach also to minimally invasive interventional techniques. • Special attention will be given to the discogenic pain, actually considered as the most frequent cause of chronic low back pain. • The correct distinction between referred pain and radicular pain contributes to give a more correct approach to spinal pain. • The pathogenesis of chronic pain renders this pain a true pathology requiring a specific management. - Abstract: The spinal pain, and expecially the low back pain (LBP), represents the second cause for a medical consultation in primary care setting and a leading cause of disability worldwide [1]. LBP is more often idiopathic. It has as most frequent cause the internal disc disruption (IDD) and is referred to as discogenic pain. IDD refers to annular fissures, disc collapse and mechanical failure, with no significant modification of external disc shape, with or without endplates changes. IDD is described as a separate clinical entity in respect to disc herniation, segmental instability and degenerative disc desease (DDD). The radicular pain has as most frequent causes a disc herniation and a canal stenosis. Both discogenic and radicular pain also have either a mechanical and an inflammatory genesis. For to be richly innervated, facet joints can be a direct source of pain, while for their degenerative changes cause compression of nerve roots in lateral recesses and in the neural foramina. Degenerative instability is a common and often misdiagnosed cause of axial and radicular pain, being also a frequent indication for surgery. Acute pain tends to extinguish along with its cause, but the setting of complex processes of peripheral and central sensitization may influence its evolution in chronic

  14. Formação e estabilização de agregados pelo sistema radicular de braquiária em um Nitossolo Vermelho Formation and stabilization of aggregates by the grass root system in an Oxisol

    Directory of Open Access Journals (Sweden)

    Eliane Duarte Brandão

    2012-07-01

    Full Text Available As gramíneas atuam de maneira direta na formação e na estabilização de agregados do solo, devido à maior densidade de raízes e à liberação de exsudatos orgânicos no solo. O objetivo do trabalho foi avaliar os efeitos do sistema radicular da Brachiaria ruziziensis Germain et Evrard na formação e na estabilização de agregados de um Nitossolo Vermelho. O experimento foi conduzido em abrigo telado, utilizando-se solo coletado na camada de 0-20cm de profundidade. O solo foi destorroado manualmente e passado em peneira de 2,00mm de abertura de malha e, posteriormente, separadas por classes de diâmetro de agregados de 2,00-1,00, 1,00-0,50 e 0,50-0,25mm com auxílio de peneiras de malhas específicas. O delineamento utilizado foi o inteiramente casualizado, em esquema fatorial 3x2x2x4, correspondendo a três classes de diâmetro de agregados (2,00-1,00, 1,00-0,50 e 0,50-0,25mm, duas condições de cultivo (com e sem gramínea, dois conteúdos de umidade (100% e 60% de água disponível e quatro épocas de avaliação (90, 180, 270 e 360 dias após o plantio da gramínea, com quatro repetições. As amostras de agregados foram acondicionadas em vasos de polietileno com capacidade para 10kg. O conteúdo de umidade foi equilibrado através de irrigações a cada dois dias. As amostragens foram realizadas a cada três meses, determinando-se o diâmetro médio ponderado de agregados secos ao ar (DMPAs, o diâmetro médio ponderado de agregado estáveis em água (DMPAu e o índice de estabilidade dos agregados (IEA = DMPAu/DMPAs. Verificaram-se maiores valores de DMPAu e de IEA para o tratamento com gramínea, indicando que o sistema radicular da Brachiaria ruziziensis favoreceu maior formação e estabilização dos agregados no solo.Grasses take direct action in the formation and stabilization of soil aggregates due to the density of roots and the release of organic exudates in soil. The objective of this study was to evaluate the effects of

  15. Leisure-time physical activity and sciatica: A systematic review and meta-analysis.

    Science.gov (United States)

    Shiri, R; Falah-Hassani, K; Viikari-Juntura, E; Coggon, D

    2016-11-01

    The role of leisure-time physical activity in sciatica is uncertain. This study aimed to assess the association of leisure-time physical activity with lumbar radicular pain and sciatica. Literature searches were conducted in PubMed, Embase, Web of Science, Scopus, Google Scholar and ResearchGate databases from 1964 through August 2015. A random-effects meta-analysis was performed, and heterogeneity and small-study bias were assessed. Ten cohort (N = 82,024 participants), four case-control (N = 9350) and four cross-sectional (N = 10,046) studies qualified for meta-analysis. In comparison with no regular physical activity, high level of physical activity (≥4 times/week) was inversely associated with new onset of lumbar radicular pain or sciatica in a meta-analysis of prospective cohort studies [risk ratio (RR) = 0.88, 95% CI 0.78-0.99, I 2  = 0%, 7 studies, N = 78,065]. The association for moderate level of physical activity (1-3 times/week) was weaker (RR = 0.93, CI 0.82-1.05, I 2  = 0%, 6 studies, N = 69,049), and there was no association with physical activity for at least once/week (RR = 0.99, CI 0.86-1.13, 9 studies, N = 73,008). In contrast, a meta-analysis of cross-sectional studies showed a higher prevalence of lumbar radicular pain or sciatica in participants who exercised at least once/week [prevalence ratio (PR) = 1.29, CI 1.09-1.53, I 2  = 0%, 4 studies, N = 10,046], or 1-3 times/week (PR = 1.34, CI 1.02-1.77, I 2  = 0%, N = 7631) than among inactive participants. There was no evidence of small-study bias. This meta-analysis suggests that moderate to high level of leisure physical activity may have a moderate protective effect against development of lumbar radicular pain. However, a large reduction in risk (>30%) seems unlikely. Leisure-time physical activity may reduce the risk of developing lumbar radicular pain. © 2016 European Pain Federation - EFIC®.

  16. Análise do número de foraminas apicais nas raízes mésio-vestibulares dos primeiros molares superiores

    Directory of Open Access Journals (Sweden)

    Gabriela Mignoni

    2015-11-01

    Full Text Available O conhecimento da morfologia radicular interna tem sido um assunto complexo e extremamente importante, considerando o planejamento e execução da terapia endodôntica. As inúmeras variações anatômicas que existem no sistema de canais radiculares contribuem para as falhas de tratamentos. O forame fisiológico e a constrição apical são considerados o término da preparo do canal radicular. O propósito desta pesquisa foi investigar em raízes mésio-vestibulares dos primeiros molares superiores o número de foraminas apicais e o diâmetro médio da foramina maior. Foram analisados 78 primeiros molares superiores humanos permanentes extraídos, tingidos com azul de metileno na porção apical. Após o preparo das amostras, os dentes foram submetidos à análise apical em um microscópio clínico operatório com magnificação de 40X. Os resultados obtidos em relação ao número de foraminas observadas foram: ausência de foraminas 2,6%, uma foramina 26,9%, duas foraminas 34,6%, três foraminas 21,8%, quatro foraminas 11,5% e cinco foraminas 2,6%, sendo que o diâmetro médio da foramina maior foi de 0,34 mm. A incidência de três ou mais foraminas e o diâmetro médio da foramina maior alerta para a complexidade anatômica e a necessidade de se encontrar meios adequados para a limpeza do sistema de canais radiculares.

  17. Desempenho de cultivares e híbridos de milheto em solo submetido a compactação

    Directory of Open Access Journals (Sweden)

    Christianne V. Guimarães

    2013-11-01

    Full Text Available Objetivou-se, neste trabalho, avaliar o crescimento aéreo e radicular de cultivares e híbridos de milheto em solo submetido a quatro níveis de compactação do solo. Foram utilizados sete híbridos de milheto - Pennisetum glaucum L. (40425, 40853, 41312, 51499, 60018, 60019 e ADR7010 e as variedades ADR300 e ADR500; aos 30 dias após o plantio determinaram-se as massas da matéria seca da parte aérea e das raízes, a densidade do comprimento radicular e o diâmetro médio radicular. Na densidade de 1,74 Mg m-3 as cultivares e híbridos de milheto apresentaram uma redução elevada da massa verde da parte aérea, massa seca da parte aérea, altura de plantas e área foliar. Os híbridos 40853 e 60019 apresentaram comportamento inferior aos demais híbridos e cultivares na produção de matéria verde e seca da parte aérea e altura de plantas na densidade de 1,65 Mg m-3. As cultivares ADR500 e ADR300 e os híbridos 40425 e 51499 se destacaram na produção de massa verde e seca e altura de plantas na densidade de 1,65 kg m-3. A maior densidade de comprimento radicular média entre as cultivares de milheto foi verificada na densidade do solo de 1,46 Mg m-3. A cultura do milheto demonstrou potencial como planta descompactadora do solo.

  18. Tooth angulation and dental arch perimeter-the effect of orthodontic bracket prescription.

    Science.gov (United States)

    Pontes, Luana F; Cecim, Rodolpho L; Machado, Sissy M; Normando, David

    2015-08-01

    The aim of this study was to evaluate the effects of upper incisors and canine angulations introduced by different bracket prescriptions on dental arch perimeter. Cone beam computerized tomography scans collected using I-Cat (Imaging Sciences International, Hatfield, PA, USA) were selected conveniently from a database of routine exams of a clinical radiology center. Crown and radicular measurements of upper incisors and canines were made and exported to the Autocad 2011 software to create a virtual dental model. The virtual teeth were positioned with an angulation of zero; thereafter, a reference value for the perimeter of the arch was measured. Furthermore, teeth angulations were applied according to the standards of the Edgewise bracket system and the Straight-wire systems: MBT, Capelozza, Andrews, and Roth. The largest linear distances for tooth crown (anterior arch perimeter) and root (radicular distance) were obtained for each bracket prescription. The anterior perimeter for well-aligned incisors and canines without angulation was used as reference (crown: 47.34mm; root: 39.13mm). An increase in the arch perimeter was obtained for all bracket prescriptions evaluated, which ranged from 0.28 and 3.19mm in the Edgewise technique, for the crown and root measurements, respectively, to 1.09 and 11.28mm for the Roth prescription. Bracket prescriptions with greater angulation led to an increased use of space within the dental arch, mainly in the radicular region. The consequence of this radicular angular displacement will need to be further investigated. © The Author 2014. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved. For permissions, please email: journals.permissions@oup.com.

  19. Dientes estabilizados con implantes endodónticos intraóseos como pilares de prótesis

    Directory of Open Access Journals (Sweden)

    Soraya Emilia Almagro Urrutia

    2003-08-01

    Full Text Available Se muestran 2 casos clínicos de pacientes que presentaban dientes con movilidad grado III, a los cuales se les realizó la técnica del implante endodóntico intraóseo, que consiste en la colocación de un perno o implante de cromo cobalto molibdeno a través del conducto radicular hasta pleno tejido óseo, con el objetivo de prolongar su longitud radicular. Los casos se evaluaron a los 15 y 45 días posimplantación y evolucionaron satisfactoriamente, por lo que se decidió comenzar el tratamiento protésico utilizando precisamente como pilares los dientes implantados. Ambos casos fueron evaluados a los 45 días después de la rehabilitación y cada 90 días hasta la fecha. Su evolución fue satisfactoria y no presentaron ninguna patología clínica y radiográfica.2 clinical cases of patients that presented tooth with degree III mobility, in which the technique of intraosteal endodontic implant, consisting in the placement of a dowel or implant of chrome-cobalt molybdenum through the radicular duct to full bone tissue, was applied aimed at prolonging their radicular length. The cases were evaluated 15 and 45 days after the implantation. As their evolution was satisfactory it was decided to begin the prosthetic treatment by using precisely the implanted tooth as abutements. Both cases were evaluated 45 days after the rehabilitation and every 90 days up to date. Their evolution was good and there were no clinical or radiographic pathologies.

  20. Immunomodulatory activity of interleukin-27 in human chronic periapical diseases.

    Science.gov (United States)

    Li, Juan; Wang, Rong; Huang, Shi-Guang

    2017-01-01

    This study aims to observe expression of IL-27 on different cells in periapical tissues of different types of human chronic periapical diseases. Periapical tissue specimens of 60 donors, including healthy control (n=20), periapical granuloma group (n=20) and radicular cysts group (n=20), were fixed in 10% buffered formalin, stained with hematoxylin and eosin for histopathology. Then specimens were stained with double- immuno-fluorescence assay for identification of IL-27-tryptase (mast cells, MCs), IL-27-CD14 (mononuclear phagocyte cells, MPs) and IL-27-CD31 (endothelial cells, ECs) double-positive cells in periapical tissues. The results indicated that compared with healthy control, the densities (cells/mm 2 ) of IL-27-tryptase, IL-27-CD14 and IL-27-CD31 double-positive cells were significantly increased in human chronic periapical diseases (periapical granuloma group and radicular cysts group) ( P cysts group was significantly higher than those in periapical granuloma group ( P periapical granuloma group had no significant difference with those in radicular cysts group ( P =0.170 and 0.138, respectively). IL-27-CD14 double positive cells density achieved to peak among three cell groups in radicular cysts groups. In conclusion, IL-27 expressed in MCs, MPs and ECs of human chronic periapical diseases with different degrees. IL-27-tryptase double-positive cells may participate in pathogenic mechanism of chronic periapical diseases, especially for formation of fibrous in periapical cysts. IL-27-CD14 and IL-27-CD31 double-positive cells may participate in immunologic response to resist periapical infection, and they may play an dual role in pathogenesis and localization of periapical diseases.

  1. Stromal differences in odontogenic cysts of a common histopathogenesis but with different biological behavior: a study with picrosirius red and polarizing microscopy.

    Science.gov (United States)

    Aggarwal, P; Saxena, S

    2011-01-01

    The present study was undertaken to detect and compare the pattern of collagen fibers in odontogenic cysts and also to find out if this methodology could be used to predict the aggressive nature of odontogenic cysts by comparing with the odontogenic tumors. The collagen in the wall of 11 odontogenic keratocysts, 14 dentigerous cysts and 14 radicular cysts was studied histochemically by staining sections with picrosirius red and examining under polarizing microscope. This was compared to 10 cases of odontogenic tumors using Z test of proportion at 1% and 5%. In dentigerous cysts, odontogenic keratocysts and odontogenic tumors, the predominant color of collagen fibers birefringence was found to be orangish red, whereas in radicular cysts the collagen fiber was of green color. Similar birefringence pattern of collagen fibers between dentigerous cysts, odontogenic keratocysts and odontogenic tumors may indicate that these lesions have a common histogenesis with a broad spectrum of biological behavior and belong to the same group, i.e., are developmental in origin. Different patterns of radicular cysts suggest different biological behavior and a positive role of inflammation on polarization color of collagen fibers.

  2. Técnica del Poste Anatómico (Grandini: Caso clínico

    Directory of Open Access Journals (Sweden)

    Sergio Pignata Volpe

    Full Text Available Resumen Uno de los grandes desafíos de los postes prefabricados de fibra ha implicado, desde sus orígenes, mejorar su diseño buscando una mayor adaptación al conducto radicular. Esto no sólo importa a los efectos de que la capa de cemento sea lo más delgada posible, sino también porque el íntimo contacto entre poste y conducto radicular genera un mecanismo de retención por fricción, que es muy favorable en el desempeño del poste para evitar su descementado. Una de las formas de mejorar dicha adaptación es a través de la Técnica del Poste Anatómico desarrollada por Grandini. En este artículo se presenta una revisión bibliográfica del tema, describiendo la técnica para un caso clínico con contraindicación de anclaje colado por el alto compromiso de resistencia corono-radicular. Palabras clave: poste anatómico, postes prefabricados de fibra, cementos adhesivos, contracción de polimerización, Técnica del Perno Muñón

  3. MR imaging of nerve root impingement in the lumbar spine

    International Nuclear Information System (INIS)

    Teresi, L.M.; Bradley, W.G. Jr.; Bloze, A.E.; Davis, S.J.; Amster, J.; Berger, P.E.

    1990-01-01

    This paper determines the relationship between MR imaging findings of nerve root impingement, presenting symptoms, and physical examination findings, and physiologic data (DSEP and EMG) in a population of patients presented with classic radicular symptoms. Fifty-eight patients presenting with classic radicular pain were studied with MR imaging, DSER, and EMG, MR imaging was performed with a GE Signa imaging system with use of T1- and T2-weighted sequences and 5-mm-thick sections. Nerve root impingement in the subarticular recess (the root exiting the next lowest level) was distinguished from nerve root impingement in the superior intervertebral foramen (the root exiting the same level)

  4. Formações císticas epidurais relacionadas a bursite interespinhosa, cisto sinovial e cisto discal Epidural cystic masses associated with interspinous bursitis, synovial and discal cysts

    Directory of Open Access Journals (Sweden)

    Frederico Guilherme de Paula Lopes Santos

    2009-04-01

    Full Text Available Os autores apresentam casos de cistos epidurais, dentre eles os cistos sinoviais, discais, do ligamento amarelo e relacionados a bursite interespinhosa, todas essas condições determinando compressão radicular, do saco dural ou estenose do canal vertebral. Descrevem as características de imagem e localização na ressonância magnética nessas diferentes afecções.The authors describe some cases of epidural cysts, namely synovial, discal, ligamentum flavum cysts, and cysts secondary to interspinous bursitis, all of these conditions determining radicular, dural sac compression or spinal canal stenosis. Magnetic resonance imaging findings and localization of these entities are described.

  5. Efeito da radiação gama sobre o perfil sensorial de suco de laranja

    OpenAIRE

    Verruma-Bernardi Marta Regina; Spoto Marta Helena F.

    2003-01-01

    O trabalho teve como objetivo avaliar o efeito de doses de radiações sobre as características sensoriais do suco fresco de laranja variedade 'Pêra' (Citrus sinensis L) conservado sob refrigeração. Utilizou-se amostras de suco de laranja refrigerado (controle) e suco de laranja refrigerado irradiado com 1,5 e 3,0kGy por hora (Cobalto60), armazenadas a 4ºC por 1, 7, 14 e 21 dias a 4ºC. Para a análise sensorial realizou-se a Análise Descritiva Quantitativa, na qual provadores selecionados e trei...

  6. Estudo do sistema radicular do arroz

    Directory of Open Access Journals (Sweden)

    Emílio B. Germek

    1950-03-01

    Full Text Available The development of the root system on five varieties of rice grown under upland conditions, has been studied. It has been found, with the rice varieties used and under the conditions tested, that 66 percent of the roots occured within 5 centimeters and 95 percent within 15 centimeters of the surface of the ground. A few roots were found to reach a depth of 1 meter, and occasionally to a depth of 1.35 meter. The Iguape-catete variety of rice showed a tendency to develop a somewhat deeper root system than the other varieties studied. Recognition of the fact that development of the roots of the rice plant is largely within the plowed layer of soil, suggests that deep plowing prior to planting with frequent and shallow cultivation following planting, to eliminate weed competition, would be desirable.

  7. Caracterização da dose letal mínima por irradiação gama para Penicillium citrinum Characterization of minimum lethal dosis of gama irradiation to Penicillium citrinum

    Directory of Open Access Journals (Sweden)

    A. N. Norberg

    1993-12-01

    Full Text Available O uso das radiações ionizantes na destruição de microrganismos responsáveis pela deterioração de alimentos ou causadores de infecções ou toxinfecções alimentares, constituiu-se aplicação da energia nuclear, para fins verdadeiramente pacíficos. Penicillium citrinum é um fungo produtor de micotoxinas, responsáveis por intoxicações em humanos e animais que se utilizam de alimentos contaminados. Há escassez de informações sobre a resistência do P. citrinum à irradiação gama; assim esta pesquisa objetivou determinar a dose letal por irradiação gama para esse microrganismo. Foram irradiadas 76 suspensões, contendo aproximadamente 100.000 esporos por mililitro, com doses entre 0,2 e 2,2 KGy (KiloGray, sendo os sobreviventes re-irradiados com doses até 3,0 KGy. O fungo foi totalmente destruído com dose de 2,2 KGy. P. citrinum descendentes dos sobreviventes de 2,0 KGy, quando re-irradiados também foram totalmente destruídos com dose de 2,2 KGy. Observou-se um aumento da resistência às doses mais baixas em relação ao fungo não irradiadoThe use of nuclear power through radiation for the destruction of microrganisms which cause food decay, and toxicosis, is specifically for peaceful purposes. Penicillium citrinum is a fungus which produce mycotoxins responsible for intoxication in humans and animals as a result of eating contaminated food. There is little informations on the resistance of P. citrinum to radiation. The objective of this research is to determine the lethal dose of gama radiation for these microrganisms. Seventy six suspensions containing approximately 100,000 spores/ml received a dose of radiation between 0.2 and 2.2 KGy (KiloGray, being one sample still alive re-irradiated with doses up to 3.0 KGy. The fungus were totally destroyed with a 2.2 KGy. Seventy six suspensions containing approximately 100,000 spores/ml received a dose of radiation between 0.2 and 2.2 KGy, being one sample still alive re

  8. The effects of different doses of 670 nm diode laser on skin flap survival in rats O efeito de diferentes doses de laser de diodo 670 nm na viabilidade de retalho cutâneo randômico em ratos

    Directory of Open Access Journals (Sweden)

    Cristiano Schiavinato Baldan

    2012-02-01

    Full Text Available PURPOSE: To investigate the effects of different low-level laser therapy (LLLT doses on random skin flap rats. METHODS: Forty Wistar rats were randomly divided in four groups. The control group (CG was not irradiated. The experimental groups were irradiated with a diode laser 670 nm with different energies per point: group 2 (G2 with 0.06 J; group 3 (G3 0.15 J and group 4 (G4 0.57 J. The three groups were irradiated in 12 equally distributed points in the cranial skin flap portion. They were submitted to the irradiation during the immediate, first and second postoperative days. The necrosis area was evaluated in the seventh postoperative day. RESULTS: The CG shows 49.35% of necrosis area in the skin flap; G2, 39.14%; G3, 47.01% and G4, 29.17% respectively. There was a significantly difference when G4 was compared with CG`s skin flap necrosis area. CONCLUSION: The low-level laser therapy diode 670 nm with 0.57 J energy per point increases the survival in randomic skin flap rats.OBJETIVO: Investigar os efeitos de diferentes doses de laserterapia de baixa intensidade na viabilidade de retalhos cutâneos randômicos em ratos. MÉTODOS: Quarenta ratos Wistar foram randomizadamente distribuídos em quatro grupos. O grupo controle (GC não foi irradiado. Os animais dos grupos experimentais foram irradiados por laser de diodo (670 nm com as seguintes energias ofertadas por ponto: grupo 2 (G2 0,06J; grupo 3 (G3 0,15 J e grupo 4 (G4 0,57 J. Os três grupos foram irradiados em 12 pontos igualmente distribuídos na porção cranial do retalho cutâneo. Todos os animais dos grupos 2, 3 e 4 foram submetidos ao protocolo de irradiação por três dias consecutivos, iniciando no pós-operatório imediato. A área necrótica foi avaliada no sétimo dia pós-operatório. RESULTADOS: A porcentagem de área necrótica apresentou-se da seguinte forma, nos diferentes grupos: GC= 49,35%, G2= 39,14%, G3= 47,01 e G4= 29,17%. Foi encontrada diferença estatisticamente

  9. Atitude do consumidor frente à irradiação de alimentos Customer attitude front to the food irradiation

    Directory of Open Access Journals (Sweden)

    Cléia Batista Dias Ornellas

    2006-03-01

    Full Text Available Fatores econômicos e sociais como custo, disponibilidade e hábitos alimentares têm, tradicionalmente, influência sobre a escolha do consumidor. Atualmente, outros fatores como legislação, aumento da quantidade de refeições realizadas fora de casa e o emprego de novas tecnologias têm sido, também, parâmetros de decisão. Neste sentido, esclarecimentos a respeito da irradiação, proposta como uma alternativa na conservação de alimentos se faz necessária, uma vez que seu uso comercial tem sido lento em função de interpretações errôneas por parte dos consumidores. Sendo assim, o presente trabalho teve como objetivo realizar um levantamento do nível de conhecimento e aceitação da irradiação de alimentos, na cidade de Belo Horizonte (MG, bem como esclarecer ao consumidor o real conceito da irradiação de alimentos. Os resultados indicaram que 59,6% dos entrevistados não sabiam que a irradiação é um método de conservação de alimentos e não souberam responder se consumiriam produtos irradiados, 16% acreditam que alimentos irradiados significam o mesmo que alimentos radioativos. Além disto, 89% dos entrevistados consumiriam alimentos irradiados se soubessem que a irradiação aumenta a segurança alimentar.Economic and social factors as cost, availability and food habits usually influence the consumer's choice. Nowadays other factors like legislation, rising of meals eaten out-of-home and the application of new technologies have been affected the shopping decision. In this direction it's necessary to have more explanations about food irradiation as a method to conserve food. Its commercial use has been slow because most of the consumers misunderstands or has wrong belief about this technique. In such a manner, this work aimed at realizing a survey of knowledge and acceptance level of food irradiation in Belo Horizonte (MG, Brazil, and also to elucidate its real meaning to consumers. A total of 218 people were

  10. Intensidade de colonização do córtex radicular e sua relação com a absorção de fósforo pelo capim-pensacola Intensity of root cortex colonization and its relation with phosphorus uptake by pensacola grass

    Directory of Open Access Journals (Sweden)

    Danilo dos Santos Rheinheimer

    1995-01-01

    Full Text Available Em plantas micorrizadas, após a colonização do córtex radicular, as hifas fúngicas extendem-se no solo absorvendo uma maior quantidade de nutrientes, especialmente o fósforo. Este trabalho tem por objetivo avaliar a relação entre porcentagem e intensidade de colonização do córtex radicular com a absorção de fósforo. Usou-se os resultados de três experimentos desenvolvidos no Departamento de Solos da Universidade Federal de Santa Maria, no período de 1989 a 1992. No primeiro, usou-se cinco níveis de calagem representados por valores de pH (4,6; 5,0; 5,5; 6, 1 e 6,6 e duas doses de P2O5 (0 e 20mg/kg; no segundo, os mesmos valores de pH e quatro doses de P2O5 (0, 20, 50 e 70mg/kg e no terceiro, dois valores de pH (4,6 e 6,1 e três doses de P2O5, (50, 150 e 250mg/kg. Em todos os experimentos usaram-se três níveis de micorrização (solo fumigado, solo fumigado + esporos de fungos micorrízicos arbusculares (fMA nativos e solo natural e pensacola como planta hospedeira. Avaliou-se o fósforo absorvido pela parte aérea, a porcentagem e intensidade de colonização. Na avaliação da intensidade levou-se em consideração a presença de hifas internas e arbúsculos, atribuindo-se notas de 1 a 5. O córtex apresentou-se densamente colonizado pelas estruturas fúngicas em condições de solo ácido e com baixa disponibilidade de fósforo, coincidindo com as maiores absorções de fósforo. Em todos os experimentos e tratamentos a intensidade mostrou-se ser um parâmetro confiável na predição de absorção de fósforo pela pensacola.Plants colonized by mycorrhizal fungi are able to uptake more nutrients, especially phosphorus, than those without colonization due to the increase in the uptake área. The objective of this study was to evaluate the rate and the intensity of mycorrhizal colonization in Paspalum notatum roots and their correlation with P uptake. The data were obtained from three different experiment carried out in a

  11. CASINO: surgical or nonsurgical treatment for cervical radiculopathy, a randomised controlled trial.

    Science.gov (United States)

    van Geest, Sarita; Kuijper, Barbara; Oterdoom, Marinus; van den Hout, Wilbert; Brand, Ronald; Stijnen, Theo; Assendelft, Pim; Koes, Bart; Jacobs, Wilco; Peul, Wilco; Vleggeert-Lankamp, Carmen

    2014-04-14

    Cervical radicular syndrome (CRS) due to a herniated disc can be safely treated by surgical decompression of the spinal root. In the vast majority of cases this relieves pain in the arm and restores function. However, conservative treatment also has a high chance on relieving symptoms. The objective of the present study is to evaluate the (cost-) effectiveness of surgery versus prolonged conservative care during one year of follow-up, and to evaluate the timing of surgery. Predisposing factors in favour of one of the two treatments will be evaluated. Patients with disabling radicular arm pain, suffering for at least 2 months, and an MRI-proven herniated cervical disc will be randomised to receive either surgery or prolonged conservative care with surgery if needed. The surgical intervention will be an anterior discectomy or a posterior foraminotomy that is carried out according to usual care. Surgery will take place within 2-4 weeks after randomisation. Conservative care starts immediately after randomisation. The primary outcome measure is the VAS for pain or tingling sensations in the arm one year after randomisation. In addition, timing of surgery will be studied by correlating the primary outcome to the duration of symptoms. Secondary outcome measures encompass quality of life, costs and perceived recovery. Predefined prognostic factors will be evaluated. The total follow-up period will cover two years. A sample size of 400 patients is needed. Statistical analysis will be performed using a linear mixed model which will be based on the 'intention to treat' principle. In addition, a new CRS questionnaire for patients will be developed, the Leiden Cervical Radicular Syndrome Functioning (LCRSF) scale. The outcome will contribute to better decision making for the treatment of cervical radicular syndrome. NTR3504.

  12. Intensive short-term vasodilation effect in the pain area of sciatica patients--case study.

    Science.gov (United States)

    Skorupska, Elżbieta; Rychlik, Michał; Pawelec, Wiktoria; Bednarek, Agata; Samborski, Włodzimierz

    2014-09-09

    Varied and complicated etiology of low back pain radiating distally to the extremities is still causing disagreement and controversy around the issue of its diagnosis and treatment. Most clinicians believe that the source of that pain is generally radicular. While some of them postulate the clinical significance of the sacroiliac joint syndrome, others demonstrate that almost one in five people with back pain experience symptoms indicative of the neuropathic pain component. To date, neuropathic involvement has not been completely understood, and different mechanisms are thought to play an important role. It has been established that muscle pain (myofascial pain) e.g. active trigger points from the gluteus minimus, can mimic pain similar to sciatica, especially in the chronic stage. This paper describes patients presenting with radicular sciatica (case one and two) and sciatica-like symptoms (case three). For the first time, intensive short-term vasodilation in the pain area following needle infiltration of the gluteus minimus trigger point was recorded. Three Caucasian, European women suffering from radicular sciatica (case one and two) and sciatica-like symptoms (case three) at the age of 57, 49 and 47 respectively underwent infrared camera observation during needle infiltration of the gluteus minimus trigger point. The patients were diagnosed by a neurologist; they underwent magnetic resonance imaging, electromyography, neurography and blood test analysis. Apart from that, the patients were diagnosed by a clinician specializing in myofascial pain diagnosis. In the examined cases, trigger points-related short-term vasodilation was recorded. Confirmation of these findings in a controlled, blinded study would indicate the existence of a link between the pain of sciatica patients (radicular or sciatica-like pain) and the activity of the autonomic nervous system. Further studies on a bigger group of patients are still needed.

  13. MRI-guided periradicular nerve root infiltration therapy in low-field (0.23-T) MRI system using optical instrument tracking

    International Nuclear Information System (INIS)

    Sequeiros, Roberto Blanco; Ojala, Risto O.; Klemola, Rauli; Jyrkinen, Lasse; Tervonen, Osmo A.; Vaara, Teuvo J.

    2002-01-01

    The purpose of this study was to evaluate the feasibility of the MRI-guided periradicular nerve root infiltration therapy. Sixty-seven nerve root infiltrations under MRI guidance were done for 61 patients suffering from lumbosacral radicular pain. Informed consent was acquired from all patients. A 0.23-T open-MRI scanner with interventional tools (Outlook Proview, Philips Medical Systems, MR Technologies, Finland) was used. A surface coil was used in all cases. Nerve root infiltration was performed with MRI-compatible 20-G needle (Chiba type MReye, Cook, Bloomington, Ind.; or Manan type, MD Tech, Florida). The evaluation of clinical outcome was achieved with 6 months of clinical follow-up and questionnaire. The effect of nerve root infiltration to the radicular pain was graded: 1=good to excellent, i.e., no pain or not disturbing pain allowing normal physical activity at 3 months from the procedure; 2=temporary, i.e., temporary relief of pain; 3=no relief of pain; and 4=worsening of pain. As an adjunct to MRI-guided positioning of the needle the correct needle localization by the nerve root was confirmed with saline injection to nerve root channel and single-shot fast spin echo (SSFSE) imaging. The MRI guidance allowed adequate needle positioning in all but 1 case (98.5%). This failure was caused by degeneration-induced changes in anatomy. Of patients, 51.5% had good to excellent effect with regard to radicular pain from the procedure, 22.7% had temporary relief, 21.2% had no effect, and in 4.5% the pain worsened. Our results show that MRI guidance is accurate and safe in performing nerve root infiltration at lumbosacral area. The results of radicular pain relief from nerve root infiltration are comparable to CT or fluoroscopy studies on the subject. (orig.)

  14. Inibição da colonização por Bradyrhizobium elkanii mas não por Glomus intraradices em soja pelo ativador de defesa vegetal BTH

    Directory of Open Access Journals (Sweden)

    Hoffmann Lúcia Vieira

    2001-01-01

    Full Text Available O produto BTH controla doenças através da ativação dos mecanismos de resistência de plantas, cujo modo de ação tem sido caracterizado através da identificação de genes ou enzimas ativados durante esta reação. Os mesmos genes e enzimas podem ser ativados como parte da reação das plantas à colonização por microssimbiontes mutualistas. Então, a aplicação de BTH pode inibir também essas simbioses. Um experimento foi conduzido para verificar se BTH tem efeito sobre a colonização de raízes de soja pelos microssimbiontes Glomus intraradices e Bradyrhizobium elkanii. Plantas controle ou inoculadas com o fungo micorrízico ou rizóbio foram tratadas com 20 mL de BTH 25 mg L-1 por meio da aplicação em sementes, via radicular ou via foliar. As plantas que receberam aplicação radicular de BTH tiveram desenvolvimento vegetativo reduzido. A colonização de raízes por B. elkanii foi menor nas plantas que receberam aplicação de BTH via radicular do que naquelas não tratadas ou tratadas por via foliar apenas. A colonização de raízes de soja por G. intraradices não foi afetada por BTH em quaisquer dos modos de aplicação. A aplicação radicular de BTH deve ser evitada na cultura da soja. Não há indício de restrição de aplicação foliar do produto.

  15. Computed tomography in lumbar canal stenosis

    International Nuclear Information System (INIS)

    Ohta, Shu; Baba, Itsushi; Ishida, Akihisa; Sumida, Tadayuki; Sasaki, Seishu

    1984-01-01

    Preoperative CT was done in 39 patients with lumbar canal stenosis. Marked symmetrical narrowing of the whole vertebral canal was seen in the group with nervous symptoms in the cauda equina. Deformed bilateral intervertebral joints were seen in the group with both nervous symptoms in the cauda equina and radicular sciatica. The lateral recess on the affected side was markedly narrowed by the projection of the upper and lower joints and herniation. In the group with radicular sciatica, the vertebral canal itself was not so narrowed, but the unilateral intervertebral joint was extremely deformed, causing a narrowing of the lateral recess. There were large differences in the angle of the left and right intervertebral joints. (Namekawa, K)

  16. Computed tomography in lumbar canal stenosis. Relationship between its findings and clinical symptoms

    Energy Technology Data Exchange (ETDEWEB)

    Ohta, Shu; Baba, Itsushi; Ishida, Akihisa; Sumida, Tadayuki; Sasaki, Seishu (Hiroshima Shiritsu Asa Shimin Hospital (Japan))

    1984-09-01

    Preoperative CT was done in 39 patients with lumbar canal stenosis. Marked symmetrical narrowing of the whole vertebral canal was seen in the group with nervous symptoms in the cauda equina. Deformed bilateral intervertebral joints were seen in the group with both nervous symptoms in the cauda equina and radicular sciatica. The lateral recess on the affected side was markedly narrowed by the projection of the upper and lower joints and herniation. In the group with radicular sciatica, the vertebral canal itself was not so narrowed, but the unilateral intervertebral joint was extremely deformed, causing a narrowing of the lateral recess. There were large differences in the angle of the left and right intervertebral joints.

  17. Light microscopic study of periapical lesions associated with asymptomatic apical periodontitis.

    Science.gov (United States)

    Kabak, S L; Kabak, Y S; Anischenko, S L

    2005-04-01

    The purpose of the study has been to evaluate the degree of chronic inflammation in tissues surrounding the apex of the tooth root in patients with apical periodontitis in the remission phase. The material included 37 apical granulomas and radicular cysts obtained as a result of apiectomy, and 20 teeth which were removed together with the focus of the periapical inflammation. Routine histological techniques, as well as the immunofluorescent and immuno-chemical methods were used to examine the material. Despite the absence of clinical symptoms in 23 of 57 cases, the morphological signs of chronic inflammation were observed in the apical area of the tooth root. Morphological signs of viral invasion of epithelial and stromal cells in the radicular cyst wall were revealed in six cases. The presence of the virus of Herpes simplex I in epithelial cells (five cases) and adenoviral invasion (one case) was confirmed by immuno-fluorescent and immuno-chemical methods. Histological examination often reveals morphological signs of an active inflammatory process in the periapical tissues of patients treated during clinical remission. In our opinion, the presence of viruses in the epithelial cells of the radicular cyst may contribute to the persistence of the active stage of the inflammatory process.

  18. Histomicrobiologic aspects of the root canal system and periapical lesions in dogs' teeth after rotary instrumentation and intracanal dressing with Ca(OH2 pastes Aspectos histomicrobiológicos do sistema de canais radiculares e das lesões periapicais em dentes de cães após instrumentação automatizada e medicação intracanal com pastas de Ca(OH2

    Directory of Open Access Journals (Sweden)

    Janir Alves Soares

    2006-10-01

    Full Text Available OBJECTIVE: The purpose of this study was to evaluate the distribution of microorganisms in the root canal system (RCS and periapical lesions of dogs' teeth after rotary instrumentation and placement of different calcium hydroxide [Ca(OH2]-based intracanal dressings. MATERIALS AND METHODS: Chronic periapical lesions were experimentally induced in 80 premolar roots of four dogs. Instrumentation was undertaken using the ProFile rotary system and irrigation with 5.25% sodium hypochlorite. The following Ca(OH2-based pastes were applied for 21 days: group 1 - Calen (n=18; group 2 - Calen+CPMC (n=20; group 3 - Ca(OH2 p.a. + anaesthetic solution (n=16 and group 4 - Ca(OH2 p.a.+ 2% chlorhexidine digluconate (n=18. Eight root canals without endodontic treatment constituted the control group. Histological sections were obtained and stained with Brown & Brenn staining technique to evaluate the presence of microorganisms in the main root canal, ramifications of the apical delta and secondary canals, apical cementoplasts, dentinal tubules, areas of cemental resorption and periapical lesions. The results were analyzed statistically by the Mann-Whitney U test (p0.05. The percentage of RCS sites containing microorganisms in groups 1, 2, 3, 4 and control were: 67.6%, 62.5%, 78.2%, 62.0% and 87.6%, respectively. CONCLUSION: In conclusion, the histomicrobiological analysis showed that the rotary instrumentation and the different calcium hydroxide pastes employed did not effectively eliminate the infection from the RCS and periapical lesions. However, several bacteria seen in the histological sections were probably dead or were inactivated by the biomechanical preparation and calcium hydroxide-based intracanal dressing.OBJETIVO: Neste estudo avaliou-se a distribuição dos microrganismos no sistema de canais radiculares (SCR e região periapical (RP de cães após instrumentação automatizada e utilização de pastas à base de hidróxido de cálcio CaO(H2

  19. Desenvolvimento Vegetativo e morfologia radicular de citrange carrizo afetado por ácido indolbutírico e micorrizas arbusculares Vegetative development and root morphology of carrizo citrange affected by indolebutyric acid and arbuscular mycorrhizal fungi

    Directory of Open Access Journals (Sweden)

    Paulo Vitor Dutra de Souza

    2000-04-01

    Full Text Available Este estudo foi realizado na localidade de Alcanar (Tarragona, Espanha e objetivou avaliar o efeito de cinco concentrações do ácido indolbutírico (AIB (0,0; 0,5; 1,0; 1,5; 2,0 g/L e da inoculação com micorrizas arbusculares (MA (Glomus intraradices Schenck & Smith sobre o desenvolvimento vegetativo, conteúdo foliar de P e K e morfologia radicular de plântulas de citrange Carrizo (Citrus sinensis (L. X Poncirus trifoliata (L. Raf.. Utilizou-se o delineamento experimental de blocos completos casualisados em esquema fatorial, com 4 repetições e 10 plantas por parcela. A aplicação de AIB não alterou o desenvolvimento vegetativo das plântulas cultivadas em ausência de MA, apesar de haver incrementado a quantidade de P e K e a espessura dos feixes vasculares. As MA incrementaram o conteúdo de P foliar. Encontrou-se uma interação positiva entre o AIB e as MA, pois as plântulas micorrizadas apresentaram um incremento no desenvolvimento vegetativo, nos conteúdos foliares de P e K e na espessura dos feixes vasculares com o aumento das concentrações de AIB.This study was carried out in Alcanar (Tarragona - Spain to evaluate the effect of five indolebutyric acid (IBA concentrations (0.0; 0.5; 1.0; 1.5; 2.0 g/L and inoculation with arbuscular mycorrhizae fungi (AMF (Glomus intraradices Schenck & Smith on Carrizo citrange (Citrus sinensis (L. x Poncirus trifoliata (L. Raf. vegetative development, P and K foliar contents and root morphology. The experimental design was in a Completly Randomized Block Design with 10 seedlings per plot and 4 replicates. The IBA concentrations had no effect on vegetative development of nonmycorrhizal seedlings, althougt it had increased P and K foliar contents and primary xylem tickness. AMF increased P foliar content. IBA x AMF interaction was observed, increasing IBA concentrations on mycorrhizal seedlings resulted in increased in vegetative development, P and K foliar contents and primary xylem thickness.

  20. Artritis séptica del pubis en dos deportistas Septic arthritis of the pubic symphysis in two athletes

    OpenAIRE

    José A. Andrews; Daniel Rizzato Lede; Melisa Senderovsky; Bárbara C. Finn; Nicholas Emery; Federico Bottaro; Julio E. Bruetman; Pablo Young

    2012-01-01

    La artritis séptica de pubis u osteomielitis púbica es la infección que compromete la sínfisis pubiana y su articulación. Es poco frecuente, representando menos del 1% de las osteomielitis. Afecta más a menudo a atletas jóvenes y a mujeres que se someten a cirugía ginecológica o urológica. Se presenta con fiebre y dolor púbico, irradiado a genitales, que aumenta con la movilización de la cadera lo que produce claudicación de la marcha. Debe hacerse el diagnóstico diferencial con la osteítis d...

  1. Estudos das propriedades mecânicas e térmicas do polímero biodegradável poli-3-hidroxibutirato (PHB) e de compósitos PHB/pó de madeira.

    OpenAIRE

    Miriam Lúcia Chiquetto Machado

    2008-01-01

    O objetivo deste trabalho foi o estudo das propriedades mecânicas e térmicas do PHB e de compósitos de PHB/pó de madeira processados, reprocessados e irradiados. Foram preparados compósitos com PHB e pó de madeira com concentrações de PHB/pó de madeira de 90/10, 80/20 e 70/30 (m/m). Foram realizados ensaios de propriedades mecânicas, HDT, ponto de amolecimento Vicat, TGA e DSC. A incorporação do pó de madeira aumentou o grau de cristalinidade e a temperatura de cristalização do polímero, e no...

  2. Efeito da radiação gama sobre o conteúdo de tocoferóis em produtos naturais e industrializados e avaliação sensorial

    OpenAIRE

    Magda Sinigallia Taipina

    2009-01-01

    O conteúdo e o percentual de retenção de atividade de vitamina E, bem como, as características sensoriais foram analisados em amostras de alimentos fontes de vitamina E: nozes pecãs; biscoitos integrais e alimento fortificado em pó irradiados com doses de 1 e 3 kGy de radiação gama de 60Co. Para a determinação de vitamina E (como equivalentes em -tocoferol) foram utilizados três lotes dos produtos e aplicado método colorimétrico padronizado pelo Instituto Adolfo Lutz de São Paulo. Para a anál...

  3. Progression of periapical cystic lesion after incomplete endodontic treatment

    Directory of Open Access Journals (Sweden)

    Jong-Ki Huh

    2016-05-01

    Full Text Available We report a case of large radicular cyst progression related to endodontic origin to emphasize proper intervention and follow-up for endodontic pathosis. A 25 yr old man presented with an endodontically treated molar with radiolucency. He denied any intervention because of a lack of discomfort. Five years later, the patient returned. The previous periapical lesion had drastically enlarged and involved two adjacent teeth. Cystic lesion removal and apicoectomy were performed on the tooth. Histopathological analysis revealed that the lesion was an inflammatory radicular cyst. The patient did not report any discomfort except for moderate swelling 3 days after the surgical procedure. Although the patient had been asymptomatic, close follow-ups are critical to determine if any periapical lesions persist after root canal treatment.

  4. Avaliação microbiológica e sensorial da vida-útil de cortes de peito de frango irradiados Microbiological and sensory evaluation of the shelf-life of irradiated chicken breast meat

    Directory of Open Access Journals (Sweden)

    L. Miyagusku

    2003-12-01

    Full Text Available Caixas de papelão contendo cortes de peito de frango sem pele e sem ossos, previamente acondicionadas em bandejas de polietileno expandido, com aproximadamente 200 gramas por bandeja e recobertas por filme de polietileno, foram submetidas à irradiação com 60Co, utilizando-se equipamento Nordion JS 7500. As amostras foram expostas a doses de 1,5; 3,0 e 7,0kGy, sendo irradiadas na modalidade estática a 0º e 180º em relação ao feixe de irradiação. Para avaliar a homogeneidade das doses de irradiação um conjunto de 18 dosímetros de alanina+parafina por tratamento foi colocado dentro das caixas com as amostras. Outro conjunto de dosímetros foi irradiado na faixa de 1 a 10kGy para elaboração da curva de resposta . Após a irradiação, os peitos de frango foram armazenados a 5±1ºC durante 39 dias, sendo submetidos a análises microbiológicas (contagem total de bactérias aeróbias psicrotróficas, bactérias aeróbias mesófilas, bolores e leveduras, Pseudomonas spp, enterobacteriáceas totais, bactérias lácticas e NMP de E.coli em 10 períodos diferentes ao longo do armazenamento. Os resultados obtidos revelaram um comportamento linear dos dosímetros de alanina+parafina na faixa de 1 a 10kGy de irradiação. Com base nas avaliações microbiológicas as amostras controle tiveram vida-útil de 5 dias, observando-se um ganho na vida-útil de 1,75; 4,40 e 7,0 vezes para as amostras irradiadas com 1,5; 3,0 e 7,0kGy, respectivamente. Constatou-se uma alteração crescente do odor de queimado à medida que se aumentavam as doses de irradiação, indicando a dose de 3kGy como a mais recomendável para se garantir um produto com maior vida-útil e sem alterações sensoriais perceptíveis.Kraft paper boxes containing 10 expanded polystyrene trays with 200g skinless deboned chicken breast each were irradiated with 60Co source of a Nordion JS7500 irradiator. The trays were previously wrapped with polyethylene film. The samples were

  5. Phototoxic action of light emitting diode in the in vitro viability of Trichophyton rubrum Ação fototóxica do diodo emissor de luz na viabilidade de Trichophyton rubrum in vitro

    Directory of Open Access Journals (Sweden)

    José Cláudio Faria Amorim

    2012-04-01

    ão são capazes de alcançar o leito ungueal em concentrações terapêuticas, antifúngicos sistêmicos que não erradicam o fungo antes das unhas serem renovadas, efeitos colaterais graves e seleção de isolados fúngicos resistentes. A terapia fotodinâmica tem sido uma alternativa promissora aos tratamentos convencionais. OBJETIVOS: Este estudo avaliou a eficácia, in vitro, de azul de orto-toluidina irradiado por diodo emissor de luz na redução da viabilidade de T. rubrum. MÉTODOS: O inóculo fúngico foi preparado e exposto a diferentes concentrações de azul de orto-toluidina e densidades de energia do diodo emissor de luz, para avaliar a sensibilidade de T. rubrum e o efeito fungicida, após terapia fotodinâmica. Além disso, os perfis da área e volume das suspensões fúngicas irradiados também foram investigados. RESULTADOS: Uma pequena redução, in vitro, de células fúngicas foi observada após a exposição a 100 mM azul de orto-toluidina irradiados por diodo emissor de luz a 18 J/cm². Efeito fungicida ocorreu após irradiação 25 µM orto-toluidina por diodo emissor de luz com densidade de energia de 72 J/cm². A análise mostrou que a área e o volume irradiados pelo diodo emissor de luz foram 52,2 mm² e 413,70 mm³, respectivamente. CONCLUSÕES: Os resultados permitiram concluir que a terapia fotodinâmica com diodo emissor de luz, nas condições experimentais é uma abordagem alternativa para inibir, in vitro, T. rubrum e pode ser um tratamento promissor para as dermatofitoses causadas por este fungo.

  6. Eatability of the irradiated food; Comestibilidad de los alimentos irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Luna C, P C

    1992-05-15

    A food is eatable and innocuous when it has an acceptable nutritional quality, it is toxicological and microbiologically safe for the human consumption. Not one preservation treatment allows to assure this in absolute form. As it happens with other conservation methods, the irradiation produce biological, chemical and physical changes in the treated food. For to check if such changes could cause damages to the health of the consumer, its have been carried out extensive studies to evaluate the inoculate of the irradiated foods. Analyzing diverse toxicity studies to prove the eatability of the irradiated foods, in this work those are presented but important in chronological order. In summary, until today it exists a great heap of tests that they demonstrate without place to doubts that the foods irradiated with a dose up to 10 KGy its are capable for the human consumption, for what can to be concluded that a safety margin exists to consume foods irradiated. (Author)

  7. Ionic conductivity in irradiated KCL; Conductiviad ionica de KCL irradiado

    Energy Technology Data Exchange (ETDEWEB)

    Vignolo Rubio, J

    1979-07-01

    The ionic conductivity of X and gamma irradiated KCL single crystals has been studied between room temperature and 600 degree centigree. the radiation induced damage resulting in a decrease of the conductivity heals by thermal annealing in two steps which are at about 350 and 550 degree centigree respectively. It has been found that the radiation induced colour centres are not involved in the observed decrease of the ionic conductivity. However. It has been observed that the effects of quenching and plastic deformation on the conductivity of the samples are very similar to the effect induced by irradiation. It is suggested that, samples radiation induced dislocation loops might cause the ionic conductivity decrease observed in irradiated samples. (Author)

  8. Retrospective dosimetry in irradiated foods; Dosimetria retrospectiva en alimentos irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Calderon, T [Universidad Autonoma de Madrid, Facultad de Ciencias, Dpto. Quimica Agricola, Geologia, Geoquimica, Cantoblanco, Madrid (Spain)

    1999-07-01

    The main objective of this communication is to show the potentiality of certain minerals which accompany the foods (grasses, spices and seasonings) as potential dosemeters and its possible application in the absorbed dose calculations by the same in its hygienic sanitary treatment. (Author)

  9. Uso de biofertilizante na produção de mudas de repolho

    Directory of Open Access Journals (Sweden)

    Cinthia Röder

    2015-10-01

    Full Text Available RESUMOA utilização de produtos biofertilizantes, como fermentados bacterianos, contendo aminoácidos, é pouco estudada na produção de mudas de hortaliças, especialmente no sistema orgânico. Neste trabalho, o objetivo foi avaliar o efeito da aplicação foliar de um fermentado bacteriano do melaço da cana, contendo 30% do aminoácido ácido L-glutâmico, no desenvolvimento de mudas de repolho. Os tratamentos, constituídos por quatro repetições, eram compostos por concentrações do fermentado (0; 0,1; 0,2; 0,4 e 0,8 mL L-1aplicadas nas folhas, em intervalos de sete ou de 14 dias. Aos 35 dias após a semeadura, foram determinados o índice relativo de clorofila, a área foliar e o volume do sistema radicular. O fermentado bacteriano promoveu incrementos do índice relativo de clorofila, da área foliar e do volume radicular, quando aplicado com intervalos de 14 dias, e incremento do volume radicular, quando aplicado com intervalos de sete dias. Ocorreu redução da área foliar, quando aplicado em concentrações superiores a 0,2 ml L-1, com intervalos de sete dias. O biofertilizante incrementa o desenvolvimento de mudas de repolho.

  10. New physical examination tests for lumbar spondylolisthesis and instability: low midline sill sign and interspinous gap change during lumbar flexion-extension motion.

    Science.gov (United States)

    Ahn, Kang; Jhun, Hyung-Joon

    2015-04-22

    Lumbar spondylolisthesis (LS) and lumbar instability (LI) are common disorders in patients with low back or lumbar radicular pain. However, few physical examination tests for LS and LI have been reported. In the study described herein, new physical examination tests for LS and LI were devised and evaluated for their validity. The test for LS was designated "low midline sill sign", and that for LI was designated "interspinous gap change" during lumbar flexion-extension motion. The validity of the low midline sill sign was evaluated in 96 patients with low back or lumbar radicular pain. Validity of the interspinous gap change during lumbar flexion-extension motion was evaluated in 73 patients with low back or lumbar radicular pain. The sensitivity, specificity, and positive and negative predictive values of the two tests were also investigated. The sensitivity and specificity of the low midline sill sign for LS were 81.3% and 89.1%, respectively. Positive and negative predictive values of the test were 78.8% and 90.5%, respectively. The sensitivity and specificity of the interspinous gap change test for LI were 82.2% and 60.7%, respectively. Positive and negative predictive values of the test were 77.1% and 68.0%, respectively. The low midline sill sign and interspinous gap change tests are effective for the detection of LS and LI, and can be performed easily in an outpatient setting.

  11. MR imaging of epithelial cysts of the oral and maxillofacial region

    International Nuclear Information System (INIS)

    Hisatomi, Miki; Asaumi, Jun-ichi; Konouchi, Hironobu; Shigehara, Hiroshi; Yanagi, Yoshinobu; Kishi, Kanji

    2003-01-01

    The aim of the present study was to review the magnetic resonance (MR) appearance of primary epithelial cysts in order to distinguish the cysts from other possible lesions. MR images were obtained in 27 cases of epithelial cysts, including 7 odontogenic keratocysts, 3 dentigerous cysts, 1 glandular odontogenic cyst, 10 radicular cysts, 4 nasopalatine duct cysts, and 2 nasolabial cysts. In addition, contrast enhanced MR imagings were performed in 12 cases, including 3 odontogenic keratocysts, 1 dentigerous cyst, 1 glandular odontogenic cyst, and 7 radicular cysts. We obtained the following results on the basis of the above MR and contrast enhanced MR findings. (a) Odontogenic keratocysts had a predilection for intermediate-high signal intensity (SI) on T1-weighted images (WI) and heterogeneous low-high SI on T2WI. (b) Dentigerous cysts, glandular odontogenic cyst, radicular cysts and nasolabial cysts showed the same predilection with the SI, which were homogeneous intermediate SI on T1WI and homogeneous high SI on T2WI. (c) The MR images of the nasopalatine duct cysts, which showed homogeneous high SI on T1WI, were specific. (d) The Gd-T1WI would be useful in decisively differentiating odontogenic cysts, which showed rim-enhancement, from tumors consisting of solid components. In conclusion, we were able to obtain more information from the MR and contrast enhanced MR images than from conventional radiograph findings

  12. MR guidance and thermometry of percutaneous laser disc decompression in open MRI: an initial clinical investigation

    Energy Technology Data Exchange (ETDEWEB)

    Streitparth, Florian; Walter, Thula; Bucourt, Maximilian de; Freyhardt, Patrick; Maurer, Martin; Renz, Diane; Gebauer, Bernhard; Hamm, Bernd; Teichgraeber, Ulf K.M. [Charite, Humboldt-University Medical School, Department of Radiology, Berlin (Germany); Hartwig, Tony; Putzier, Michael; Strube, Patrick [Charite, Humboldt-University, Center for Musculoskeletal Surgery, Berlin (Germany); Bretschneider, Tina [University of Magdeburg, Department of Radiology, Magdeburg (Germany)

    2013-10-15

    To assess the feasibility, safety and efficacy of real-time MR guidance and thermometry of percutaneous laser disc decompression (PLDD). Twenty-four discs in 22 patients with chronic low-back and radicular pain were treated by PLDD using open 1.0-T magnetic-resonance imaging (MRI). A fluoroscopic proton-density-weighted turbo spin-echo (PDw TSE) sequence was used to position the laser fibre. Non-spoiled gradient-echo (GRE) sequences were employed for real-time thermal monitoring based on proton resonance frequency (PRF). Radicular pain was assessed over 6 months with a numerical rating scale (NRS). PLDD was technically successful in all cases, with adequate image quality for laser positioning. The PRF-based real-time temperature monitoring was found to be feasible in practice. After 6 months, 21 % reported complete remission of radicular pain, 63 % at least great pain relief and 74 % at least mild relief. We found a significant decrease in the NRS score between the pre-intervention and the 6-month follow-up assessment (P < 0.001). No major complications occurred; the single adverse event recorded, moderate motor impairment, resolved. Real-time MR guidance and PRF-based thermometry of PLDD in the lumbar spine under open 1.0-T MRI appears feasible, safe and effective and may pave the way to more precise operating procedures. (orig.)

  13. MR guidance and thermometry of percutaneous laser disc decompression in open MRI: an initial clinical investigation

    International Nuclear Information System (INIS)

    Streitparth, Florian; Walter, Thula; Bucourt, Maximilian de; Freyhardt, Patrick; Maurer, Martin; Renz, Diane; Gebauer, Bernhard; Hamm, Bernd; Teichgraeber, Ulf K.M.; Hartwig, Tony; Putzier, Michael; Strube, Patrick; Bretschneider, Tina

    2013-01-01

    To assess the feasibility, safety and efficacy of real-time MR guidance and thermometry of percutaneous laser disc decompression (PLDD). Twenty-four discs in 22 patients with chronic low-back and radicular pain were treated by PLDD using open 1.0-T magnetic-resonance imaging (MRI). A fluoroscopic proton-density-weighted turbo spin-echo (PDw TSE) sequence was used to position the laser fibre. Non-spoiled gradient-echo (GRE) sequences were employed for real-time thermal monitoring based on proton resonance frequency (PRF). Radicular pain was assessed over 6 months with a numerical rating scale (NRS). PLDD was technically successful in all cases, with adequate image quality for laser positioning. The PRF-based real-time temperature monitoring was found to be feasible in practice. After 6 months, 21 % reported complete remission of radicular pain, 63 % at least great pain relief and 74 % at least mild relief. We found a significant decrease in the NRS score between the pre-intervention and the 6-month follow-up assessment (P < 0.001). No major complications occurred; the single adverse event recorded, moderate motor impairment, resolved. Real-time MR guidance and PRF-based thermometry of PLDD in the lumbar spine under open 1.0-T MRI appears feasible, safe and effective and may pave the way to more precise operating procedures. (orig.)

  14. Nigerian Journal of Clinical Practice - Vol 19, No 5 (2016)

    African Journals Online (AJOL)

    Evaluation of microtensile and tensile bond strength tests determining effects of ... treatment: Effects of methadone dose, treatment duration, and time between last ... nanocrystalline hydroxy apatite granules in the management of radicular cyst ...

  15. Foraminotomia cervical posterior en el tratamiento de conflictos foraminales

    Science.gov (United States)

    Campero, Álvaro; Barrera, Ramiro; Ajler, Pablo

    2012-01-01

    Introducción: La foraminomotima cervical posterior es un procedimiento utilizado para la descompresion radicular por via posterior y constituye una alternativa a la via clásica anterior. En este trabajo evaluamos nuestra serie de pacientes tratados por esta via. Método: Desde enero de 2008 a diciembre de 2011, 17 pacientes (18 foraminotomías) fueron operados por presentar cervicobraquialgia a causa de un conflicto foraminal, realizando un foraminotomía cervical posterior. Los pacientes fueron evaluados en el postoperatorio inmediato, al mes y a los 3 meses de la cirugía. Los parámetros para valorar los resultados fueron la Escala Análoga del Dolor (VAS), la Neck Disability Index y los criterios de Odom. Resultados: El dolor radicular por conflicto foraminal secundario a hernia de disco cervical fue el síntoma y la patología predominante. El nivel más afectado fue C5-C6. La resolución completa del dolor radicular se observó en casi todos los pacientes. La VAS preoperatoria en promedio fue de 8.8 (mínimo 8 – máximo 10), con una franca mejoría en todos los casos (0.4 en el último control). La media en la Neck Disability Index al inicio fue de 35.3 (mínimo 32 – máximo 45), con una evolución favorable en la evaluación final (0.6). Los Criterios de Odom para la evaluación de pacientes operados de columna cervical fueron satisfactorios con un promedio de 1.17. Se observaron complicaciones en 4 pacientes (23%), todas tuvieron una evolución favorable. No hubo infecciones, discitis ni empeoramiento de los síntomas preexistentes en ningún paciente. Conclusión: La foraminotomía cervical posterior es un procedimiento efectivo para el tratamiento del dolor radicular en los conflictos foraminales PMID:23596556

  16. The Effect of Smoking on the Risk of Sciatica: A Meta-analysis.

    Science.gov (United States)

    Shiri, Rahman; Falah-Hassani, Kobra

    2016-01-01

    The role of smoking in sciatica is unknown. This study aimed to estimate the effect of smoking on lumbar radicular pain and clinically verified sciatica. Comprehensive literature searches were conducted in PubMed, Embase, Web of Science, Scopus, Google Scholar, and ResearchGate databases from 1964 through March 2015. We used a random-effects meta-analysis, assessed heterogeneity and publication bias, and performed sensitivity analyses with regard to study design, methodological quality of included studies, and publication bias. Twenty-eight (7 cross-sectional [n = 20,111 participants], 8 case control [n = 10,815], and 13 cohort [n = 443,199]) studies qualified for a meta-analysis. Current smokers had an increased risk of lumbar radicular pain or clinically verified sciatica (pooled adjusted odds ratio [OR] 1.46; 95% confidence interval [CI], 1.30-1.64, n = 459,023). Former smokers had only slightly elevated risk compared with never smokers (pooled adjusted OR 1.15; 95% CI, 1.02-1.30, n = 387,196). For current smoking the pooled adjusted OR was 1.64 (95% CI, 1.24-2.16, n = 10,853) for lumbar radicular pain, 1.35 (95% CI, 1.09-1.68, n = 110,374) for clinically verified sciatica, and 1.45 (95% CI, 1.16-1.80, n = 337,796) for hospitalization or surgery due to a herniated lumbar disc or sciatica. The corresponding estimates for past smoking were 1.57 (95% CI, 0.98-2.52), 1.09 (95% CI, 1.00-1.19), and 1.10 (95% CI, 0.96-1.26). The associations did not differ between men and women, and they were independent of study design. Moreover, there was no evidence of publication bias, and the observed associations were not due to selection or detection bias, or confounding factors. Smoking is a modest risk factor for lumbar radicular pain and clinically verified sciatica. Smoking cessation appears to reduce, but not entirely eliminate, the excess risk. Copyright © 2016 Elsevier Inc. All rights reserved.

  17. Biomassa de mudas de pepinos híbridos conduzidos sob ambientes protegidos

    Directory of Open Access Journals (Sweden)

    Edilson Costa

    2010-01-01

    Full Text Available O estudo de oleráceas no Estado de Mato Grosso do Sul, especialmente na região do Pantanal, é fundamental para o desenvolvimento do comércio local e sustentabilidade dos pequenos produtores que circunvizinham as áreas urbanas. Neste contexto, foi desenvolvido experimento com produção de mudas de pepino, estudando o acúmulo de biomassa aérea e radicular dos híbridos Aladdin F1, Nikkey, Safira e Nobre F1, em diferentes ambientes de cultivo e substratos. O experimento foi realizado em 2007, utilizando três ambientes de cultivo: (A1 estufa plástica; (A2 viveiro telado com sombrite® e (A3 viveiro telado com aluminet®. Foram utilizadas três composições de substratos S1 (solo + fibra de coco; S2 (solo + pó-de-serra e S3 (solo + composto orgânico. A resposta dos híbridos de pepinos em termos de biomassa seca das mudas dependeu do substrato e do ambiente de cultivo. O substrato "solo e fibra de coco" promoveu maior acúmulo de biomassa na estufa e no viveiro com tela de monofilamento. O substrato "solo e composto orgânico" proporcionou maior biomassa aérea no viveiro com aluminet®. O híbrido 'Safira' acumulou maior biomassa radicular nos telados e no substrato "solo e fibra de coco". O híbrido 'Nikkey' acumulou maior biomassa radicular no viveiro com aluminet® e no substrato "solo e fibra de coco", sem diferir de "solo e pó-de-serra". Os híbridos 'Aladdin F1' e 'Nobre F1' acumularam biomassa radicular similar nos ambientes; 'Aladdin F1' teve maior acúmulo com os substratos "solo e composto orgânico" e "solo e fibra de coco", e 'Nobre F1', maior acúmulo com "solo e fibra de coco", sem diferir de "solo e pó-de-serra".

  18. LA INOCULACIÓN CON Glomus fasciculatum EN EL CRECIMIENTO DE CUATRO ESPECIES FORESTALES EN VIVERO Y CAMPO

    Directory of Open Access Journals (Sweden)

    William Hernández

    2009-01-01

    Full Text Available La presente investigación se realizó para conocer la respuesta de 4 especies forestales a la aplicación del Glomus fasciculatum en vivero y campo. En la fase de vivero se evalúo diámetro basal, altura total, peso seco del follaje y radicular, absorción de nutrimentos en el follaje y el sistema radicular. En campo se cuantificó altura total, diámetro, y absorción de nutrimentos en el follaje. Los resultados mostraron que en vivero los mayores incrementos promedio, en los tratamientos inoculados, los registró el ronrón (Astronium graveolens, la teca (Tectona grandis y el amarillón (Terminalia amazonia, con 48,9, 35,2 y 30,6%, respectivamente; mientras que en melina (Gmelina arborea el incremento fue de 16,9%. El mayor incremento se registró en el peso seco del follaje y en el radicular con 30,8 y 63%, respectivamente. En la absorción de nutrimentos el ronrón mostró diferencias en Mg, Cu, Zn, Mn y Fe, tanto en el follaje como en el sistema radicular; sin embargo, melina fue la especie que registró las concentraciones de nutrimentos superiores, aunque no significativas; las demás especies no registraron diferencias significativas. En el campo, en las plantas inoculadas, solamente melina reflejó diferencias significativas en diámetro y altura total, con un incremento de 37,9 y 31,7%, respectivamente. La absorción de nutrimentos de melina, amarillón y ronrón fue en promedio 32,2, 19,8 y 6,6%, respectivamente, con una mayor absorción en Ca, Mn, K y Fe. La mortalidad en vivero fue nula, mientras que en el campo, varió de acuerdo con la especie y el tratamiento. El aumento en el crecimiento de las 4 especies fue la tendencia común, a excepción de teca, que en el campo no mostró resultados positivos.

  19. Unicystic ameloblastoma of the maxilla: A case report

    Directory of Open Access Journals (Sweden)

    Paikkatt V

    2007-06-01

    Full Text Available Unicystic ameloblastoma is believed to be less aggressive and responds more favorably to conservative surgery than the solid or multicystic ameloblastomas. This report is a rare case of unicystic ameloblastoma of the maxilla that was treated by enucleation under suspicion of a radicular cyst related to a dens in dente. The neoplastic nature of the lesion became evident only when the enucleated material was available for histologic examination. With this report, the authors illustrate the importance and complexity of a differential diagnosis of lesions with a cystic aspect in the anterior region of the maxilla, among them - inflammatory radicular cysts, odontogenic keratocysts, adenomatoid odontogenic and unicystic ameloblastoma. Relevant diagnostic problems and choice of treatment of unicystic ameloblastoma are presented along with a review of the literature.

  20. Odontogenic Keratocyst Looks Can Be Deceptive, Causing Endodontic Misdiagnosis

    Directory of Open Access Journals (Sweden)

    K. M. Veena

    2011-01-01

    Full Text Available Odontogenic keratocyst (OKC is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst. When the cyst is multilocular and located at the molar ramus area, it may be confused to ameloblastoma. Lots of cases have been reported in the literature where OKC is associated with the nonvital tooth. So trauma could be one of the reasons in inducing this cyst. In our case, it was in the anterior region at the periapex of nonvital tooth having traumatic occlusion. Hence, the diagnosis of radicular cyst was made and endodontic treatment was done.

  1. The place of the CT scan in the three concept view (TCV) of the low back syndrome

    International Nuclear Information System (INIS)

    Geldermann, P.W.

    1982-01-01

    From the historical lines along which our thinking about low back pain developed, three concepts can be deduced: radicular, stenotic and axial. The patient with a low back pain syndrome (LBS) should be seen with this three concept view (TCV) in mind. Modern insight into the degenerative process of the low back support this concept. The clinical syndromes illustrating these concepts, radicular syndromes, Neurogenic Peripheral Intermittent Claudication (NPIC), and axial low back pain, can intermingle. To determine the place of the CT scan in the process of diagnosis of the LBS, we carried out a total of 56 CT-examinations on about 200 low back patients with various indications. The results are discussed. In addition to radiological suppositions, NPIC plays an important part in deciding whether or not to perform a CT scan. (Author)

  2. [Discarthrosis with hyperalgic lumbar multileveled radicular syndrome].

    Science.gov (United States)

    Sardaru, D; Tiţu, Gabriela; Pendefunda, L

    2012-01-01

    The problems at the level of intervertebral discs are producing dysfunctions and important functional regression at the level of lumbar column, at a stage at which the patient could remain blocked in an anterior or lateral flexion position or producing an antalgic position of scoliosis that could incapacitate the patient to perform activities of daily living. The medical rehabilitation, in such cases, must seek not only the relief of local pain through different methods of obtaining it, but also the functional reeducation of the intervertebral articulations through specific analytical mobilization in order to achieve the biomechanical harmonization of the rachis. We report the case study of a 66 year-old patient who presented to our clinic for medical consult and physical therapy when he was diagnosed with discharthrosis, hyperalgic lumbar multileveled radiculopathy at L4-L5 and L5-S1. The lumbar x-ray showed osteophytes, disc narrowing at the level of L5-S1 and inter-apophysis arthrosis. The clinical examination revealed difficulty walking with pain in the right sacroiliac articulations and right sciatic emergence with plantar paraesthesia. The patient developed pain induced scoliosis on the right side that restricted the lumbar range of motion and prevented the right flexion blocking him into an left flexion, any attempt of straightening inducing pain. The condition was treated using specific analytical lumbar mobilization for the realignment of the vertebrae complex. In this case study, we found that functional reeducation in cases of pain induced deviations of the rachis of the column should be centered on the harmonization of inadequate pressure and position of the complex intervertebral articulations.

  3. Interferência de plantas daninhas sobre o crescimento inicial de Coffea arabica Weed effect on the initial growth of Coffea arabica

    Directory of Open Access Journals (Sweden)

    C.M.T. Fialho

    2011-03-01

    Full Text Available Objetivou-se com este trabalho avaliar os efeitos da interferência de plantas daninhas, em diferentes densidades de infestação, sobre o crescimento de plantas jovens de café arábica. Mudas de café, cultivar Mundo Novo, foram transplantadas, no estádio de quatro a cinco pares de folhas completamente expandidas, para vasos com capacidade de 25 dm³. O experimento foi conduzido em casa de vegetação em blocos casualizados, em esquema fatorial (4 x 4; o primeiro fator foi composto por espécies de plantas daninhas (Digitaria horizontalis, Brachiaria decumbens, Brachiaria plantaginea e Mucuna aterrima, e o segundo, por densidades dessas espécies (zero, dois, quatro e seis plantas por vaso, com quatro repetições. O plantio das espécies daninhas foi realizado 60 dias após o transplantio do café (0 DAT. Nesta data e no dia do encerramento do experimento, aos 90 DAT, determinaram-se a altura, a área foliar e o diâmetro do caule da planta de café, para cálculo do incremento dessas variáveis. Aos 90 DAT, determinou-se a matéria seca da parte aérea e radicular do café e das plantas daninhas e a densidade radicular do café. Utilizando esses resultados, estimou-se a razão de massa foliar, razão de massa caulinar, razão de massa radicular, razão de área foliar e a razão sistema radicular/parte aérea das plantas de café. A espécie M. aterrima foi a que mais reduziu a taxa de crescimento, a área foliar, a matéria seca do caule e das folhas e o diâmetro do caule do café. Entre as gramíneas, B. plantaginea foi a que mais reduziu a taxa de crescimento, área foliar, diâmetro do caule e densidade radicular do café. Ocorreu relação negativa entre a densidade de plantas daninhas e as variáveis de crescimento e com a razão de massa radicular e razão sistema radicular/parte aérea.The goal of this work was to evaluate the effects of weeds on the growth of young Arabica coffee plants, at different densities of infestation

  4. “Evaluation of fracture strength of teeth restored with different types ...

    African Journals Online (AJOL)

    2014-11-24

    Nov 24, 2014 ... tooth with damaged pulp in function. ... fluid tight obturation along with adequate postendodontic ... radicular dentin to supporting tissues and thus protect and ... modulus, which is similar to that of dentin, resin cements,.

  5. Issuing of Regulations on the Clearance of Irradiated Food Products on the Basis of Foreign Petitions; Promulgation d'un Reglement Regissant l'Autorisation de Commercialiser des Denrees Alimentaires Irradiees, sur la Base de Demandes Fondees sur des Donnees Elaborees a l'Etranger; Protsedura polucheniya razreshenij na prodazhu obluchennykh pishchevykh produktov na baze inostrannykh khodatajstv; Autorizacion del Consumo de Productos Alimenticios Irradiados, Sobre la Base de Investigaciones Realizadas en el Extranjero

    Energy Technology Data Exchange (ETDEWEB)

    Foa, E.; Eisenberg, E.; Kahan, R. S.; Lapidot, M. [Soreq Nuclear Research Centre, Yavne (Israel)

    1966-11-15

    , la promulgation de dispositions nouvelles. La plupart des dispositions legislatives applicables a l'heure actuelle prevoient que la comestibilite des aliments irradies doit etre demontree de facon incontestable avant que les autorites puissent permettre l'irradiation et la consommation de ces denrees. Toutefois, une telle demonstration depasse les moyens des petits pays et des pays en voie de developpement, alors que ce sont eux, precisement, qui pourraient tirer les plus grands avantages de l'application des methodes d'irradiation a l'echelle industrielle, puisqu'elle leur permettrait d'augmenter l'approvisionnement de leur marche interieur en produits locaux et d'accroitre leurs possibilites d'exportation. A titre {sup d}'essai, on a presente le 24 fevrier 1966 au Ministere israelien de la sante une requete demandant d'autoriser la consommation humaine de pommes de terre a chair blanche prealablement irradiees pour arreter leur germination. La demande ne se fondait pas sur des etudes faites en Israeel mais sur des recherches publiees a l'etranger; on precisait que les criteres de comestibilite approuves par les gouvernements d'autres Etats devraient etre admis par les autorites israeliennes comme suffisants. Une autre demande analogue relative aux oignons irradies sera presentee sous peu. Si cette procedure reussit, elle pourrait etre adoptee par d'autres pays, ce qui faciliterait sans doute la conclusion d'accords commerciaux internationaux. Elle devrait contribuer a une generalisation rapide de l'irradiation pour la conservation des aliments dans les regions ou ce procede peut presenter un interet economique. (author) [Spanish] Desde principios de 1965 Israel viene interesandose por los problemas juridicos que plantea la autorizacion del consumo de alimentos irradiados y por la instalacion de una planta de irradiacion de alimentos. Entre las cuestiones estudiadas han sido de particular importancia la supervision y control de la irradiacion y la distribucion de

  6. Avaliação ultrassonográfica do meato acústico em cães Ultrasonographic evaluation of the external ear in dogs

    Directory of Open Access Journals (Sweden)

    Polyanne Cramer Schmidlin

    2010-04-01

    Full Text Available O propósito deste trabalho foi determinar a viabilidade da ultrassonografia para avaliar o canal auditivo externo de cães, aferindo a espessura e arquitetura da parede do conduto auditivo e bula timpânica. Foram avaliados 10 cães da raça Retriever do Labrador não portadores de otite externa. O exame foi realizado com o aparelho de ultrassonografia bidimensional e transdutor linear de 14 MHz, com todos os animais sob efeito de anestesia geral. O exame foi efetivado antes e depois do conduto ser preenchido com solução salina, promovendo uma janela acústica anecóica. A artéria maxilar foi identificada com o Doppler colorido o que facilitou a localização da bula timpânica em todos os cães. A definição da imagem da parede proximal ao transdutor foi pior quando comparada à parede distal r em todos os animais, isto devido à proximidade da parede com a face de leitura do transdutor. Nos cães que apresentavam uma maior quantidade de cerúmen a superfície do epitélio estava com uma camada hiperecóica mais evidente. A membrana timpânica não foi identificada em nenhum animal. Conclui-se que ultrassonografia é viável e deve ser mais pesquisada na contribuição diagnóstica das doenças óticas em cães.The purpose of this study was to determine the viability of ultrasonographic evaluation of the external ear in dogs. The thickness and architecture of the ear wall and tympanic bulla of 10 Labrador Retrievers without ear disease was evaluated. The examination was performed with an ultrasound system and a 14 MHz bidimentional linear-array transducer and general anesthesia, before and after the infusion of saline solution into the ear canal. The maxillary artery was identified with color Doppler and helped to establish the location of the tympanic bulla in all dogs. The proximal wall was less well-defined when compared with the distal wall of the ear canal. Dogs with increased ceruminal content within the ear canal showed a hypoechoic

  7. Qualidade física de um Latossolo Vermelho cultivado com soja submetido a níveis de compactação e de irrigação

    Directory of Open Access Journals (Sweden)

    Paula Regina de Oliveira

    2012-04-01

    Full Text Available Manter uma boa qualidade física do solo é importante para preservar o meio ambiente, além de maximizar a produtividade das plantas. Um solo compactado poderá interferir na densidade, na porosidade e na resistência do solo à penetração, influenciando no crescimento radicular. A presente pesquisa objetivou avaliar a qualidade física de um Latossolo Vermelho eutroférrico, textura argilosa, com a cultivar de soja CAC-1, submetido a quatro níveis de compactação e três níveis de irrigação, utilizando os atributos físicos do solo, assim como a correlação do sistema radicular com a produtividade da cultura. O delineamento experimental foi em blocos ao acaso, com parcelas subdivididas, com quatro repetições. Os níveis de compactação foram: C0 = 0, C2 = 2, C4 = 4 e C6 = 6 passadas, no mesmo local, de um trator de 11 t. Foram coletadas amostras indeformadas de solo nas entrelinhas da cultura da soja, para determinação dos atributos físicos, nas camadas de 0-0,10 e 0,10-0,20 m. A produtividade máxima da soja foi obtida com a resistência do solo à penetração de 0,71 MPa. O sistema radicular correlacionou-se inversamente com a produtividade da soja.

  8. Expression of bcl-2 in the Epithelial Lining of Odontogenic Keratocysts

    Directory of Open Access Journals (Sweden)

    Gh. Jahanshahi

    2006-03-01

    Full Text Available Statement of Problem: The aggressive nature and high recurrence rate of Odontogenic Keratocysts (OKCs may be due to unknown factors inherent in the epithelium or because of enzymatic activity in the fibrous wall. Bcl-2 protein is characterized by its ability to inhibit apoptosis.Purpose: The aim of the present study was to analyze the expression of bcl-2 protein in OKCs and to compare it with the more common radicular and dentigerous cysts. The possible relationship between inflammation and bcl-2 expression was also investigated.Materials and Methods: Formalin fixed paraffin-embedded tissue sections of 20 OKCs, 20 radicular and 20 dentigerous cysts were immunohistochemically analyzed for immunoreactivity of the bcl-2 protein.Results: Bcl-2 expression was observed in 19 OKCs (95%, one radicular cyst (5%and one dentigerous cyst (5%. There was no statistically significant relationship between inflammation and the number of bcl-2 positive cells. Immunoreactivity was mainly noted in the basal or basal/supra basal layers.Conclusion: Considering the fact that bcl-2 over expression may lead to increased survival of epithelial cells, present study may demonstrate a possible relationship between the aggressive nature of OKC and the intrinsic growth potential of its lining epithelium. Furthermore a basal/supra basal distribution of bcl-2 positive cells was seen in some odontogenic keratocysts which may have a significant impact on the behavior of this cyst.

  9. Estudo longitudinal do sucesso clínico-radiográfico de dentes tratados com medicação intracanal de hidróxido de cálcio

    Directory of Open Access Journals (Sweden)

    Mauro Juvenal Nery

    Full Text Available INTRODUÇÃO: O tratamento endodôntico é de fundamental importância para abolir a infecção presente em dentes que apresentam necrose pulpar. OBJETIVO: O objetivo do presente estudo foi avaliar clínica e radiograficamente a eficácia dos tratamentos de canais radiculares de dentes com lesão periapical crônica, efetuados pelos graduandos em Odontologia, da Faculdade de Odontologia de Araçatuba - UNESP. MATERIAL E MÉTODO: Foram selecionados 100 pacientes que possuíam dentes com lesão periapical crônica para serem tratados. Após o preparo biomecânico, os canais radiculares receberam uma medicação intracanal de hidróxido de cálcio durante o período de 14 dias. Os canais radiculares foram obturados com cimento endodôntico à base de hidróxido de cálcio. Foi realizada a proservação por um período entre oito e 11 meses. RESULTADO: A análise dos resultados permitiu constatar a porcentagem de 78,46% dos casos com reparo total da lesão periapical e de 21,54% dos casos em que não houve evidências de reparo. CONCLUSÃO: Ocorreu reparo das lesões periapicais nos dentes tratados pelos graduandos da Faculdade de Odontologia de Araçatuba - UNESP.

  10. Histological evaluation of pulp tissue from second primary molars correlated with clinical and radiographic caries findings

    Directory of Open Access Journals (Sweden)

    Vellore Kannan Gopinath

    2014-01-01

    Full Text Available Background: Managing dental caries in young children is demanding due to the elusions present on the right diagnostic criteria for treatment. The present study evaluated the histological status of pulp tissues extracted from primary second molar with caries involvement. Histological findings are correlated with clinical and radiographic assessment. Materials and Methods: Simple experimental study was conducted on upper or lower second primary molars with occlusal (22 teeth or proximal (22 teeth dental caries. Selected children were below 6 years of age. Percentage of caries involvement, residual dentin thickness (RDT, radiographic assessment of interradicular and periapical areas, clinical caries depth and signs and symptoms are the parameters considered for comparing with the histological findings. The specimens were grouped based on the nature of the inflammatory process as acute or chronic. The data were analyzed by Student t-test to compare histological types of inflammation with clinical parameters. P value < 0.05 was considered as significant. Results: Four cases revealed severe acute inflammation in coronal and relatively mild acute inflammation in radicular pulp. In the rest of the specimen coronal and radicular pulp had similar acute or chronic inflammatory changes. Histological evidence of pulpitis correlated with dental caries depth of ≥80%, RDT of ≤1 mm, radiographic rarefactions in the interradicular regions and symptoms of pain. Conclusion: Primary second molars with more than two-third caries involvement with symptoms of pain histologically showed inflammation of both coronal and radicular pulp tissues in all cases.

  11. Transforaminal Epidural Steroid Injections Followed by Mechanical Diagnosis and Therapy to Prevent Surgery for Lumbar Disc Herniation

    NARCIS (Netherlands)

    van Helvoirt, H.; Apeldoorn, A.T.; Ostelo, R.W.J.G.; Knol, D.L.; Arts, M.P.; Kamper, S.J.; van Tulder, M.W.

    2014-01-01

    Study Design: Prospective cohort study. Objective: To report the clinical course of patients with MRI-confirmed lumbar disc herniation-related radicular noncentralizing pain who received transforaminal epidural steroid injections (TESIs) and mechanical diagnosis and therapy (MDT). Summary of

  12. Comparação entre os volumes pulmonares irradiados com técnica bidimensional e tridimensional conformada na radioterapia de pacientes com tumores de pulmão localmente avançados Comparison between irradiated lung volumes with two-dimensional and three-dimensional conformal radiotherapy techniques for locally advanced lung cancer

    Directory of Open Access Journals (Sweden)

    Heloisa de Andrade Carvalho

    2009-10-01

    Full Text Available OBJETIVO: Comparar e quantificar os volumes pulmonares irradiados utilizando planejamentos bidimensional (2D e tridimensional (3D conformado na radioterapia de tumores de pulmão. MATERIAIS E MÉTODOS: Em 27 pacientes portadores de câncer de pulmão foi feito planejamento 3D e outro correspondente em 2D. As doses prescritas variaram de 45 a 66 Gy. Foram avaliadas as doses no volume alvo planejado (PTV, volume tumoral macroscópico (GTV e pulmões (volume de pulmão que recebe 20 Gy ou 30 Gy - V20 e V30, respectivamente, e dose média. Os órgãos de risco adjacentes (medula espinhal, esôfago e coração receberam doses abaixo dos limites de tolerância. RESULTADOS: O GTV variou de 10,5 a 1.290,0 cm³ (média de 189,65 cm³. Nos planejamentos 2D foi utilizado, em média, um total de 59,33 campos, e nos planejamentos 3D, 75,65 campos. Em todas as situações analisadas houve significante (p OBJECTIVE: To compare and quantify irradiated lung volumes using two-dimensional (2D and three-dimensional (3D conformal planning for radiotherapy in the treatment of lung cancer. MATERIALS AND METHODS: 2D and 3D conformal radiotherapy plannings were performed for 27 patients with lung cancer. Prescribed doses ranged from 45 to 66 Gy. The analysis covered the doses to planning target volume (PTV, gross tumor volume (GTV and lungs (lung volume receiving 20 Gy or 30 Gy - V20 and V30, respectively, and mean dose. The doses to adjacent organs at risk (spinal cord, esophagus and heart were maintained below the tolerance limits. RESULTS: GTV ranged from 10.5 to 1,290.0 cm³ (mean, 189.65 cm³. On average, a total of 59.33 fields were utilized in the 2D planning and 75.65 fields in the 3D planning. Lung volumes were significantly preserved (P < 0.05 with the 3D conformal planning in all the evaluated cases, with about 15% decrease in the irradiated lung volumes. Lungs without tumor were most benefited from this technique. CONCLUSION: 3D radiotherapy allowed a better

  13. Prevalence and distribution of odontogenic cysts in a Mexican sample. A 753 cases study.

    Science.gov (United States)

    Villasis-Sarmiento, Luis; Portilla-Robertson, Javier; Melendez-Ocampo, Arcelia; Gaitan-Cepeda, Luis-Alberto; Leyva-Huerta, Elba-Rosa

    2017-04-01

    Odontogenic cysts (OC) are the most frequent lesions of the jaws and their constant epidemiological update is necessary and indispensable. Therefore the principal objective of this report was To determine prevalence and clinical-demographical characteristics of OC in a Mexican sample. 753 cases of OC coming from the archive of a head and neck histopathological teaching service, from January 2000 to December 2013, were included. OC cases were re-assessed according 2005 WHO classification. Chi square test was used to establish possible associations ( p pulpar necrosis and impacted teeth, radicular cyst and dentigerous cyst could be prevenible. Therefore, it is necessary to establish preventive strategies to diminish dental decay and programs of prophylactic extractions of impacted teeth, to in consequence decrease the prevalence of odontogenic cysts. Key words: Cyst, dentigerous cyst, mexican, odontogenic cyst, radicular cyst.

  14. Browse Title Index

    African Journals Online (AJOL)

    Items 151 - 200 of 319 ... ... on colorectal cancer risk in a large cohort of women with diabetes .... Vol 10, No 1 (2015), Lung function profiles and aerobic capacity of ... maxillary radicular cyst presenting as facial fracture and abscess: a case report.

  15. Perioperative pregabalin improves pain and functional outcomes 3 months after lumbar discectomy.

    LENUS (Irish Health Repository)

    Burke, Siun M

    2010-04-01

    Patient outcome after lumbar discectomy for radicular low back pain is variable and the benefit is inconsistent. Many patients continue to experience pain 3 months after surgery. Pregabalin, a membrane stabilizer, may decrease perioperative central sensitization and subsequent persistent pain.

  16. Sincronização do ciclo celular em meristema radicular de baru (Dipteryx alata Vog. Sinchronization of cell cycle in root meristem of baru (Dipteryx alata Vog.

    Directory of Open Access Journals (Sweden)

    Giovana Augusta Torres

    2003-04-01

    Full Text Available Uma das dificuldades de se conduzir estudos citogenéticos em espécies vegetais nativas do cerrado é a ocorrência de baixos índices metafásicos no meristema radicular. O incremento dos índices mitótico e metafásico em células de pontas de raiz tem sido obtido em várias espécies com a sincronização do ciclo celular por meio de hidroxiuréia (HU. Neste trabalho foram determinadas as condições ótimas para a sincronização eficiente do ciclo em células meristemáticas de raízes de baru (Dipteryx alata Vog.. Foram testadas quatro concentrações de HU (0,00; 1,25; 2,50; 5,00 e 10,00 mM, três tempos de exposição das raízes (10, 15 e 20 h e dois tempos de recuperação do ciclo (5 e 10 h. As melhores respostas foram obtidas com exposição das raízes, de cerca de 1 cm, à solução de HU 3,5 mM, por 20 horas, com posterior recuperação do ciclo em água destilada por 5 horas. O índice de 45% de células em divisão representou um incremento de cerca de 5 vezes em relação à testemunha, ao passo que para células em metáfases, o índice de 22,6% foi cerca de 10 vezes superior. Portanto, o uso dessa estratégia mostrou-se bastante eficiente para a obtenção de grande quantidade de cromossomos para análise citogenética do baru.A major difficulty in cytogenetic studies of plant species from "cerrado" is the low metaphasic index in root tip cells. Cell cycle synchronization, by using hydroxyurea (HU, has been successfully used in order to obtain high mitotic and metaphasic index in several species. The goal of this work was to optimize conditions for efficient synchronization of Dipteryx alata root tip meristematic cells. Different levels of hydroxyurea (0, 1.25, 2.50, 5.00, and 10.00 mM, periods of treatment (10, 15, and 20 h and periods of cell cycle recovery (5 and 10 h were tested. Best results were achieved by treating 10-mm long roots with 3.5 mM hydroxyurea, for 20 h and incubating for 5 h in distilled water. The

  17. Alterações histopatológicas associadas à braquiterapia intra-arterial com o samário-153

    Directory of Open Access Journals (Sweden)

    Précoma Dalton Bertolim

    2004-01-01

    Full Text Available A lesão da parede arterial provocada por balão de angioplastia ou implante de próteses endovasculares em modelos experimentais e humanos pode provocar a reestenose do vaso, principalmente por migração e proliferação de células musculares lisas e síntese de matriz extracelular. Vários estudos demonstraram que a braquiterapia intra-arterial atua nestes fatores e, conseqüentemente, no tratamento da reestenose coronariana. Este estudo tem por objetivo avaliar as alterações vasculares morfológicas e morfométricas induzidas pela braquiterapia com samário-153 (153Sm, utilizando uma dose considerada ideal e outra elevada em coelhos hipercolesterolêmicos. Foram analisados 43 coelhos hipercolesterolêmicos e um total de 86 artérias ilíacas submetidas à lesão por balão de angioplastia, divididos em três grupos, sendo irradiados com as doses de 15Gy (n = 14 e 60Gy (n = 36 e controle (n = 36. Foram realizadas análise morfométrica (área neo-intimal, área da camada média, área do vaso e análise histológica qualitativa para avaliação tecidual. O colesterol médio foi de 1.362 ± 497mg/dl nos três grupos. O achado mais relevante foi uma significativa inibição da hiperplasia neo-intimal no grupo irradiado com a dose de 15Gy, maior do que o controle e com a dose de 60Gy. Na dose de 60 Gy, além de ineficaz para inibir a proliferação neo-intimal, teve características tissulares e estruturais sugestivas de radiolesão, como presença de células xantomatosas, tecidos hialino e amorfo, proliferação vascular. Estas células, bem como o aumento das dimensões morfométricas do vaso, foram proporcionais aos graus de lesão nas lâminas elásticas interna e externa, sendo observados principalmente com a dose de 60Gy. Os segmentos médios das artérias ilíacas, representando o local de maior contato com o balão, tiveram maiores alterações morfométricas e celulares em relação aos segmentos referenciais (proximal e distal nos

  18. Effect of rotary instrumentation and of the association of calcium hydroxide and chlorhexidine on the antisepsis of the root canal system in dogs Efeito da instrumentação automatizada e da associação hidróxido de cálcio e clorexidina na anti-sepsia de canais radiculares de cães

    Directory of Open Access Journals (Sweden)

    Janir Alves Soares

    2006-04-01

    Full Text Available This study aimed at evaluating the antisepsis of the root canal system (RCS and periapical region (PR provided by rotary instrumentation associated with chlorhexidine + calcium hydroxide as intracanal medicament. Chronic periapical lesions were induced in 26 pre-molar roots in two dogs. After microbiological sampling, automatic instrumentation using the Profile system and irrigation with 5.25% sodium hypochlorite solution, with a final rinse of 14.3% EDTA followed by profuse irrigation with physiological saline were carried out in 18 root canals. After drying the canals, a paste based on calcium hydroxide associated with a 2% chlorhexidine digluconate solution was placed inside them. After 21 days, the medication was removed, leaving the root canals empty and coronally sealed. After 96 hours, a final microbiological sample was obtained, followed by histomicrobiological processing by the Brown & Brenn method. Eight untreated root canals represented the control group (C-G. Based on the Mann-Whitney test at a confidence level of 5% (p Este estudo objetivou avaliar a anti-sepsia do sistema de canais radiculares (SCR e da região periapical (RP proporcionada pela instrumentação automatizada associada a medicação intracanal à base de hidróxido de cálcio + clorexidina. Lesões periapicais crônicas foram induzidas em 26 raízes de pré-molares de dois cães. Após amostragem microbiológica, procedeu-se à instrumentação automatizada de 18 canais radiculares (CR utilizando-se o sistema Profile e a solução de hipoclorito de sódio a 5,25%, com irrigação final com EDTA a 14,3%, seguida de irrigação profusa com soro fisiológico. Após se secarem os canais, foi colocada em seu interior uma pasta à base de hidróxido de cálcio P.A. associada à solução de digluconato de clorexidina a 2%. Transcorridos 21 dias, removeu-se a medicação, deixando-se os CR vazios e selados coronariamente. Após 96 horas, obteve-se a amostra microbiol

  19. ANÁLISIS DE LA CLARIFICACIÓN DENTAL COMO MÉTODO PARA EVALUAR EL LOCALIZADOR APICAL: UN ESTUDIO DESCRIPTIVO EXPLORATORIO IN VITRO

    Directory of Open Access Journals (Sweden)

    Anuar Elián Barona Triviño

    2012-12-01

    Full Text Available Objetivo: Evaluar cuatro técnicas de manejo de muestras dentales, propuestas para analizarla precisión de los localizadores electrónicos de ápice radicular. Materiales y métodos: Se realizó un estudio descriptivo exploratorio in vitro. Previo acceso endodóntico y localización del conducto radicular, 51 dientes uniradiculares fueron montados en modelos de alginato, se midió la longitud del conducto radicular hasta el foramen apical con una lima de acero inoxidable, empleando un localizador apical; en ese momento la lima  se fijó con cianoacrilato dentro del conducto. Los dientes fueron divididos en 4 grupos de manera aleatoria, divididos de la siguiente forma: 3 grupos evaluaron distintas  técnicas de clarificación dental, normalmente utilizadas para observar morfología interna radicular y que se proponen como una nueva alternativa en la evaluación de los localizadores apicales, las técnicas  fueron: 1 Técnica de Okumura, modificada por Aprile, 2 Técnica de Gulavibala, 3 Técnica propuesta por los investigadores del presente estudio. Estas técnicas se compararon contra la Técnica de desgaste apical propuesta por Jakobson la cual se ha reportado recientemente con buenos resultados. Posteriormente bajo estereoscopio se digitalizaron  imágenes  de los dientes y con el Software ImageTool V3.0 ® se tomaron medidas desde la punta de la lima hasta el foramen apical visible, ya sea por clarificación o por desgaste. Estas medidas  se analizaron usando las pruebas estadísticas Anova, Bonferroni, Sidak y Scheffé. Resultados: Las medidas con las técnicas de clarificación presentaron destrucción de tejido dental lo que afectó la evaluación de la medida que hizo el localizador apical. La evaluación con la técnica de desgaste presento los mejores resultados Conclusiones: La técnica de clarificación no es utilizable para evaluar localizadores apicales. La técnica de desgaste se encuentra indicada en la evaluación de

  20. Apical and periapical repair of dogs' teeth with periapical lesions after endodontic treatment with different root canal sealers Reparação apical e periapical de dentes de cães com lesão periapical crônica após tratamento endodôntico utilizando diferentes materiais obturadores

    Directory of Open Access Journals (Sweden)

    Mário Roberto Leonardo

    2003-03-01

    Full Text Available The aim of this study was to evaluate the apical and periapical repair after root canal treatment of dogs' teeth with pulp necrosis and chronic periapical lesion using different root canal sealers. After periapical lesion induction, forty-four root canals of 3 dogs were submitted to biomechanical preparation using 5.25% sodium hypochlorite as an irrigating solution. A calcium hydroxide dressing (Calen PMCC was applied for 15 days and the root canals were filled using the lateral condensation technique with gutta-percha points and Sealapex, AH Plus or Sealer Plus for sealing. After 180 days, the animals were sacrificed by anesthetic overdose and the obtained histological sections were stained with hematoxylin-eosin for optical microscopic analysis of the apical and periapical repair. The groups filled with Sealapex and AH Plus had better histological repair (p O objetivo do presente estudo foi avaliar a reparação apical e periapical pós-tratamento endodôntico de dentes de cães com necrose pulpar e reação periapical crônica, em que se utilizaram diferentes materiais obturadores. Foram utilizados 44 canais radiculares, nos quais, após indução das lesões periapicais, foi efetuado o preparo biomecânico empregando-se como solução irrigadora uma solução de hipoclorito de sódio a 5,25%. Após curativo de demora com pasta à base de hidróxido de cálcio (Calen PMCC, mantida no canal radicular durante 15 dias, os canais radiculares foram obturados pela técnica clássica complementada pela condensação lateral ativa, empregando-se os cimentos Sealapex, AH Plus ou Sealer Plus. Decorrido o período de 180 dias, os animais foram mortos e as peças submetidas ao processamento laboratorial. Os cortes histológicos obtidos foram corados com hematoxilina-eosina. A análise histopatológica demonstrou que nos canais radiculares obturados com os cimentos Sealapex e AH Plus ocorreu melhor reparação (p < 0,05 do que nos canais obturados com o

  1. Three-dimensional analysis of the pulp cavity on surface models of molar teeth, using X-ray micro-computed tomography

    DEFF Research Database (Denmark)

    Markvart, Merete; Bjørndal, Lars; Darvann, Tron Andre

    2012-01-01

    . In summary, three-dimensional surface models were made with a high precision; an increased accumulation of mineral deposits was noted in molars with small pulp chambers and combined with the consistent pattern of intra-radicular connections, the potential endodontic treatment complexity is underlined...

  2. A rare variant of internal anatomy of a third mandibular molar: a case report.

    Science.gov (United States)

    Nimigean, V; Nimigean, Vanda Roxana; Sălăvăstru, D I

    2011-01-01

    The several anatomical variations existing in the root canal system may contribute to failure of the root canal therapy. Knowledge of the internal dental morphology is a complex and extremely important point for planning and performing endodontic therapy. This paper reports the case of a left mandibular third molar that presented only one dental conical root and only one aberrant radicular canal with an initial annular portion situated in the coronar third of the root and a linear portion at the level of the other two thirds of the dental root, which opened through an apical foramen. Root canal therapy and case management are described. Features like wide crown access, adequate illumination and use of exploring files where important for successful completion of the endodontic treatment. The treatment was performed through conventional methods. This clinical case constitutes a rare anatomical variant of internal radicular morphology.

  3. Síndrome de Hamman: presentación de dolor torácico en un adolescente

    Directory of Open Access Journals (Sweden)

    Karen L. Morcillo

    2015-01-01

    Full Text Available El dolor torácico en adolescentes es una causa de consulta frecuente en los servicios de urgencias; si el dolor es de inicio agudo, causa ansiedad y temor en los pacientes, que lo relacionan con una patología cardiovascular. Su amplia variedad de posibilidades diagnósticas constituye un desafío para el médico de urgencias que se enfrenta a este síntoma. Se presenta el caso de un adolescente de 15 años de edad previamente sano que comenzó con dolor precordial irradiado al cuello de inicio agudo y en quien se documentó un síndrome de Hamman como manifestación de un neumomediastino espontáneo.

  4. Crescimento radicular de plântulas de milho afetado pela resistência do solo à penetração Root growth of corn seedlings as affected by soil resistance to penetration

    Directory of Open Access Journals (Sweden)

    Ciro Antonio Rosolem

    1999-05-01

    Full Text Available A resistência do solo à penetração é relacionada com a textura, compactação e umidade do solo. No presente trabalho se estudou o efeito da interação desses fatores sobre o crescimento de raízes de milho. Materiais de solo com 22, 30, 34, 41 e 48% de argila foram acondicionados em tubos de PVC de 10 cm com 4,3 cm de diâmetro interno, nas densidades globais de 1,07, 1,18, 1,36 e 1,53 g cm-3, em três tensões de água: -0,034, -0,106 e -0,640 MPa. Plântulas de milho foram cultivadas nos tubos por 48 horas. Quando a densidade do solo é baixa, a textura tem papel preponderante no crescimento radicular. Esse efeito é menor à medida que aumenta a densidade global. O aumento da resistência do solo à penetração causa diminuição no comprimento e número de raízes seminais adventícias; a raiz seminal primária mostra menor capacidade de penetração do que as raízes seminais adventícias. Resistências do solo à penetração da ordem de 1,3 MPa reduzem à metade o crescimento das raízes seminais adventícias do milho.The soil resistance to penetration is affected by soil texture, compaction and moisture content. In this paper, the effects of the interaction of these factors on corn root growth was studied. Soil materials with 22, 30, 34, 41 and 48% of clay were packed in PVC tubes 10 cm high, with 4.3 cm of internal diameter to reach bulk densities of 1.07, 1.18, 1.36 and 1.53 g cm-3. Water was added to reach water potentials of -0.034, -0.106 and -0.640 MPa. Corn seedlings were grown in the tubes for 48 hours. When the soil bulk density was low, root growth was affected mainly by soil texture. As soil bulk density increased, there was a decrease in the effect of soil texture on root growth. The increase in soil strength caused a decrease in root length and in the number of seminal adventitious roots. The primary roots showed a lower penetration ability when compared to seminal adventitious roots. A soil resitance of 1.3 MPa

  5. Incidence of microcracks in maxillary first premolars after instrumentation with three different mechanized file systems: a comparative ex vivo study.

    Science.gov (United States)

    Kfir, A; Elkes, D; Pawar, A; Weissman, A; Tsesis, I

    2017-01-01

    The objective of this study is to determine the potential for microcracks in the radicular dentin of first maxillary premolars using three different mechanized endodontic instrumentation systems. Eighty extracted maxillary first premolars with two root canals and no externally visible microcracks were selected. Root canal instrumentation was performed with either the ProTaper file system, the WaveOne primary file, or the self-adjusting file (SAF). Teeth with intact roots served as controls. The roots were cut into segments and examined with an intensive, small-diameter light source that was applied diagonally to the entire periphery of the root slice under ×20 magnification; the presence of microcracks and fractures was recorded. Pearson's chi-square method was used for statistical analysis, and significance was set at p systems, respectively, while no microcracks were present in the roots treated with the SAF (p = 0.008 and p = 0.035, respectively). Intact teeth presented with cracks in 5 % of the roots. The intensive, small-diameter light source revealed microcracks that could not be detected when using the microscope's light alone. Within the limitations of this study, it could be concluded that mechanized root canal instrumentation with the ProTaper and WaveOne systems in maxillary first premolars causes microcracks in the radicular dentin, while the use of the SAF file causes no such microcracks. Rotary and reciprocating files with large tapers may cause microcracks in the radicular dentin of maxillary first premolars. Less aggressive methods should be considered for these teeth.

  6. Obesity as a risk factor for sciatica: a meta-analysis.

    Science.gov (United States)

    Shiri, Rahman; Lallukka, Tea; Karppinen, Jaro; Viikari-Juntura, Eira

    2014-04-15

    The aim of this study was to assess the associations of overweight and obesity with lumbar radicular pain and sciatica using a meta-analysis. We searched the PubMed, Embase, Scopus, and Web of Science databases from 1966 to July 2013. We performed a random-effects meta-analysis and assessed publication bias. We included 26 (8 cross-sectional, 7 case-control, and 11 cohort) studies. Both overweight (pooled odds ratio (OR) = 1.23, 95% confidence interval (CI): 1.14, 1.33; n = 19,165) and obesity (OR = 1.40, 95% CI: 1.27, 1.55; n = 19,165) were associated with lumbar radicular pain. The pooled odds ratio for physician-diagnosed sciatica was 1.12 (95% CI: 1.04, 1.20; n = 109,724) for overweight and 1.31 (95% CI: 1.07, 1.62; n = 115,661) for obesity. Overweight (OR = 1.16, 95% CI: 1.09, 1.24; n = 358,328) and obesity (OR = 1.38, 95% CI: 1.23, 1.54; n = 358,328) were associated with increased risk of hospitalization for sciatica, and overweight/obesity was associated with increased risk of surgery for lumbar disc herniation (OR = 1.89, 95% CI: 1.25, 2.86; n = 73,982). Associations were similar for men and women and were independent of the design and quality of included studies. There was no evidence of publication bias. Our findings consistently showed that both overweight and obesity are risk factors for lumbar radicular pain and sciatica in men and women, with a dose-response relationship.

  7. Cohort study of lumbar percutaneous chemonucleolysis using ethanol gel in sciatica refractory to conservative treatment.

    Science.gov (United States)

    Touraine, Sébastien; Damiano, Joël; Tran, Olivia; Laredo, Jean-Denis

    2015-11-01

    To investigate the efficacy of percutaneous chemonucleolysis using ethanol gel (PCEG) in alleviating radicular pain due to disc herniation after failure of conservative treatment. After failure of conservative treatment, PCEG was performed under fluoroscopic guidance in 42 patients with sciatica >4/10 on a Visual Analog Scale (VAS) for at least 6 weeks and consistent disc herniation on MRI or CT <3 months. The VAS pain score was determined at baseline, then after 1 and 3 months. We assessed the influence of patient-related factors (age, gender, pain duration) and disc herniation-related factors (level, migration pattern, disc herniation-related spinal stenosis) on outcome of PCEG. Mean pain duration was 6.7 months. Pain intensity decreased by 44% and 62.6% after 1 and 3 months, respectively, versus baseline (P = 0.007). A mild improvement was noted by the rheumatologist in 30/42 (71.4%) and 36/42 (85.7%) patients after 1 and 3 months, respectively, and in 31/42 (73.8%) and 33/42 (78.6%) patients by self-evaluation. Patients who failed PCEG were significantly older (49.8 vs. 37.3 years, P = 0.03). None of the other variables studied were significantly associated with pain relief. PCEG may significantly improve disc-related radicular pain refractory to conservative treatment. • Percutaneous chemonucleolysis using ethanol gel (PCEG) is feasible on an outpatient basis. • PCEG improves disc-related radicular pain refractory to conservative treatment. • PCEG is feasible on an outpatient basis. • Failure of PCEG does not interfere with subsequent spinal surgery.

  8. Evaluation of collagen in connective tissue walls of odontogenic cysts--a histochemical study.

    Science.gov (United States)

    Vij, Ruchieka; Vij, Hitesh; Rao, Nirmala N

    2011-03-01

    The purpose of this study was to evaluate the nature of collagen in the connective tissue walls of odontogenic cysts, like the odontogenic keratocyst (OKC), dentigerous cyst and radicular cyst using picrosirius red stained sections. Furthermore, it was intended to assess if the capsular connective tissue can affect the nature of overlying epithelium, thus emphasizing the role of epithelial-mesenchymal interactions in biological behaviour of the cysts. The material for the study included 51 formalin-fixed paraffin-embedded tissue blocks (15 odontogenic keratocyst, 15 dentigerous cysts, 15 radicular cysts and four normal mucosa and two dental follicular tissue as controls), retrieved from the Department of Oral Pathology and Microbiology, MCODS, Manipal. Tissue blocks were sectioned at 5-μm thickness, stained with picrosirius red stain and observed with polarization and light microscopy. Few sections of OKC and dentigerous cyst exhibited greenish-yellow birefringence in sub-epithelial region, whereas others showed a yellowish-orange birefringence under polarization microscopy. Most radicular cysts had yellowish-orange to orange birefringence. Shift in colour in case OKC and dentigerous cyst was attributed to the presence of inflammation in those sections. These regions also exhibited either a change in phenotype or thickness of overlying epithelium. This technique can be used to study the nature of collagen fibres in odontogenic cyst walls. Further studies with an increased sample size and using various epithelial and mesenchymal markers and ssDNA antibodies should be carried out to confirm the effect of epithelial-mesenchymal interactions on the nature of epithelium of odontogenic cysts. © 2010 John Wiley & Sons A/S.

  9. Odontogenic cysts: demographic profile in a Brazilian population over a 38-year period.

    Science.gov (United States)

    de Souza, Lélia-Batista; Gordón-Núñez, Manuel-Antonio; Nonaka, Cassiano-Francisco-Weege; de Medeiros, Marcell-Costa; Torres, Tabita-Fernandes; Emiliano, Gustavo-Barbalho-Guedes

    2010-07-01

    To determine the distribution of odontogenic cysts diagnosed histologically over a period of 38 years in a Brazilian population according to age, gender and site affected and to compare these data with previously reported studies from other countries. A total of 1019 cases of odontogenic cysts diagnosed between 1970 and 2007 were studied. Clinical features obtained from the patient records and microscope slides were reviewed according to the 1992 World Health Organization classification. The mean age was 31.0 years, and there was a predominance of females. The most frequent odontogenic cysts were radicular cysts (61.4%), followed by dentigerous cysts (20.1%) and odontogenic keratocysts (6.4%). Radicular cysts were more frequent in females (62.0%), and the maxillary teeth were the site most commonly involved (63.05%). The peak incidence of dentigerous cysts occurred in the second decade of life, with the posterior region of the mandible being the site most affected (46.3%), followed by the anterior region of the maxilla (27.8%). Odontogenic keratocysts showed a peak incidence between the third and fourth decades of life and predominance among females. The posterior region of the mandible was the site most frequently affected (65.6%). The present results showed a similar frequency of odontogenic cysts in this Brazilian population and other populations around the world, with inflammatory cysts being identified as the most frequent odontogenic cyst. Radicular cysts, dentigerous cysts, and odontogenic keratocysts are the most common cystic lesions, accounting for 87.9% of all odontogenic cysts.

  10. Evaluación de la edad dental en niños venezolanos utilizando el método de Schour y Massler

    Directory of Open Access Journals (Sweden)

    Zapata-K

    2014-01-01

    Full Text Available Objetivo: La presente investigación pretende determinar la precisión del método propuesto por Schour y Massler para la estimación de la edad dental en un grupo de niños Venezolanos que asistió al Servicio de Ortodoncia de Interceptiva de la Universidad Central de Venezuela en el período de 2001-2011. Materiales y métodos: Se seleccionó una muestra estratifi por edad y sexo incluyendo radiografías panorámicas de alta calidad tomadas a pacientes sanos con edades de 4 a 10 años. Se determinó estadio de erupción (con barrera ósea, sin barrera ósea, en plano oclusal y formación radicular (etapas de Nolla en la muestra, comparando las medias con las tablas de Schour y Massler (ANOVA p=0.05 distribuyendo por rangos de edad. Resultados: La erupción dental fue similar a la graficada en las tablas de Schour y Massler, con un adelanto estadísticamente significavo para el incisivo central inferior y retardo para del primer premolar superior y segundo premolar inferior. La formación radicular estuvo retrasada en comparación con las tablas, siendo estadísticamente signifi\tpara las etapas fi\tde formación radicular del incisivo lateral inferior, el primer premolar superior, segundos premolares y segundo molar superior. Conclusiones: La estimación de edad dental utilizando las tablas de Schour y Massler fue apropiada en esta muestra de niños Venezolanos.

  11. Otite externa necrotizante com paralisia facial periférica bilateral: relato de caso e revisão da literatura Necrotizing external otitis with periferic bilateral facial palsy: case report and literature review

    Directory of Open Access Journals (Sweden)

    Antonio Antunes

    2004-01-01

    Full Text Available A otite externa necrotizante (OEN, conhecida no passado como otite externa maligna, é uma infecção potencialmente letal que começa usualmente no conduto auditivo externo e se estende à base do crânio ocorrendo, principalmente, em pacientes diabéticos idosos e que a despeito de antibioticoterapia prolongada está associada à morbidade elevada e mortalidade significante. Os autores apresentam o caso de um paciente adulto, diabético, com OEN e paralisia facial periférica bilateral que evoluiu com cura da infecção, porém sem melhora da paralisia.Necrotizing external otitis (NEO, known in the past as malignant external otitis, is a potencial letal infection which begins usually in the external ear canal and spreads to the base of the skull. It occurs mainly in diabetic elderly patients who despite prolonged antibioticotherapy is associated to high morbidity and significant mortality. The authors present a case of an adult diabetic patient who developed NOE associated with bilateral periferic facial palsy evoluting with cure of the infection but without facial improvement.

  12. Spinal decompensation in degenerative lumbar scoliosis

    NARCIS (Netherlands)

    de Vries, A.A.; Mullender, M.G.; Pluymakers, W.J.; Castelein, R.M.; van Royen, B.J.

    2010-01-01

    Due to the aging population, degenerative scoliosis is a growing clinical problem. It is associated with back pain and radicular symptoms. The pathogenesis of degenerative scoliosis lies in degenerative changes of the spinal structures, such as the intervertebral disc, the facet joints and the

  13. Epidural cystic masses associated with interspinous bursitis, synovial and discal cysts

    International Nuclear Information System (INIS)

    Santos, Frederico Guilherme de Paula Lopes; Souza, Ricardo Andre de; Brotto, Marcos Pama D'Almeida; Suguita, Fabio Massaaki; Amaral, Denise Tokechi; Amaral, Lazaro Luis Faria do

    2009-01-01

    The authors describe some cases of epidural cysts, namely synovial, discal, ligamentum flavum cysts, and cysts secondary to interspinous bursitis, all of these conditions determining radicular, dural sac compression or spinal canal stenosis. Magnetic resonance imaging findings and localization of these entities are described. (author)

  14. Epidural cystic masses associated with interspinous bursitis, synovial and discal cysts; Formacoes cisticas epidurais relacionadas a bursite interespinhosa, cisto sinovial e cisto discal

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Frederico Guilherme de Paula Lopes; Souza, Ricardo Andre de; Brotto, Marcos Pama D' Almeida; Suguita, Fabio Massaaki; Amaral, Denise Tokechi; Amaral, Lazaro Luis Faria do [Hospital Beneficencia Portuguesa de Sao Paulo, Sao Paulo, SP (Brazil). MedImagem], e-mail: fgpls@yahoo.com.br

    2009-03-15

    The authors describe some cases of epidural cysts, namely synovial, discal, ligamentum flavum cysts, and cysts secondary to interspinous bursitis, all of these conditions determining radicular, dural sac compression or spinal canal stenosis. Magnetic resonance imaging findings and localization of these entities are described. (author)

  15. Colonização radicular de plantas cultivadas por Ralstonia solanacearum biovares 1, 2 e 3 Root colonization of cultivated plants inoculated with Ralstonia solanacearum biovar 1, 2 and 3

    Directory of Open Access Journals (Sweden)

    José Magno Martins Bringel

    2001-09-01

    Full Text Available A murcha bacteriana causada por Ralstonia solanacearum é considerada a principal doença de origem bacteriana no mundo. Centenas de espécies de plantas pertencentes a mais de 50 famílias botânicas têm sido relatadas como hospedeiras. Foi avaliada, em condições de casa de vegetação, a colonização radicular de alface, arroz, cebolinha, ervilha, pepino e soja, por seis isolados de Ralstonia solanacearum (Rs, biovares 1, 2 e 3. Estirpes dos isolados de Rs com resistência múltipla aos antibióticos estreptomicina, rifampicina e cloranfenicol foram utilizadas. A colonização foi avaliada 45 dias após a inoculação, através do plaqueamento de suspensão de trituração em meio de cultura semi-seletivo. A ervilha comportou-se como hospedeira de todos os isolados mas, apenas um isolado da biovar 3 foi patogênico a esta espécie. A soja apresentou populações elevadas de quatro isolados distribuídos entre as três biovares e o pepino, de apenas dois isolados das biovares 1 e 3. Exceto para o isolado que foi patogênico à ervilha, as plantas não apresentaram sintomas da doença, comportando-se como hospedeiras não suscetível. O arroz apresentou populações muito baixas de todos os isolados. Alface e cebolinha não hospedaram nenhum dos isolados inoculados. Os resultados mostram a capacidade de Rs colonizar e sobreviver em diferentes espécies de plantas como rizobactérias.Bacterial wilt caused by Ralstonia solanacearum is considered the main plant disease of bacterial origin in the world, where hundreds of plant species in more than 50 botanical families are host plants. Root colonization of lettuce (Lactuca sativa, rice (Oryza sativa, spring onion (Allium fistulosum, pea (Pisum sativum, cucumber (Cucumis sativus, and soybean (Glycine max by six isolates of Ralstonia solanacearum (Rs biovars 1, 2 and 3 was evaluated under greenhouse conditions. Bacterial strains resistant to streptomycin, rifampicin and chloranfenicol were used

  16. Sistema radicular dos citros em Neossolo Quartzarênico dos Tabuleiros Costeiros sob irrigação e sequeiro Citrus root system in Coastal Tablelands on Typic Quartzipsamment under irrigation and rainfed conditions

    Directory of Open Access Journals (Sweden)

    Laercio Duarte Souza

    2007-10-01

    Full Text Available O objetivo deste trabalho foi avaliar o sistema radicular da laranjeira 'Pêra' Citrus sinensis (L. Osb., enxertada em limoeiro 'Rugoso' Citrus jambhiri Lush., plantada no espaçamento 6x4 m, sob sistema irrigado com microaspersores e sob sequeiro. O solo da área experimental, localizada em Itapicuru, BA, é um Neossolo Quartzarênico, com horizonte subsuperficial coeso. O delineamento experimental foi o inteiramente casualizado, e foram avaliadas cinco plantas em cada sistema. Amostras de raiz foram coletadas a cada 0,5 m de distância do caule, em seis profundidades, em quatro locais, na linha de plantas e seis nas entrelinhas. A distribuição das raízes foi avaliada em três classes de diâmetro (1 mm. A comparação entre os locais, em relação à planta, nos sistemas irrigado e sequeiro, tanto na linha de plantas quanto na entrelinha, apresentou diferenças na distribuição de raízes apenas à profundidade de 0-0,20 m. As 36 combinações dos três diâmetros de raiz e das seis profundidades, entre os sistemas irrigado e sequeiro, mostraram diferenças na distribuição de raízes apenas no diâmetro 0,5 e The aim of this work was to evaluate the root system of 'Pera' orange tree Citrus sinensis (L. Osb. grafted on 'Rugoso' lemon tree Citrus jambhiri Lush., cultivated with spacing within and between rows of 4 and 6 m, respectively, under rainfed conditions and under irrigation. The experimental area was established in Itapicuru, BA, Brazil, in a Typic Quartzipsamment soil with a subsuperficial cohesive layer. The experimental was a completely randomized design with five plants evaluated at each system. Root samples were collected in six positions between rows and four positions within rows, spaced of 0.5 m from tree's stem. At each position, the roots were sampled in six depths. Root distribution was evaluated using three ranges of root diameters (1 mm. Comparing the positions from the plants, within and between rows in both systems

  17. Diagnostic sensitivity and specificity in a retrospective clinical, radiographic and histopathological study of 166 cystic jaw lesions

    DEFF Research Database (Denmark)

    Therkildsen, N. M.; Andersen, Kristian; Blomlôf, J.

    2014-01-01

    , but a low diagnostic sensitivity in relation to the keratocystic odontogenic tumour (KCOT) was revealed. The radicular cyst, dentigerous cyst and KCOT were the most frequently observed cystic jaw lesions. Conclusion In general, a high diagnostic specificity for all cystic jaw lesions was observed. A low...

  18. SECONDARY RETENTION OF PERMANENT MOLARS - AN ASSESSMENT OF ANKYLOSIS BY SCANNING ELECTRON AND LIGHT-MICROSCOPY

    NARCIS (Netherlands)

    RAGHOEBAR, GM; JANSEN, HWB; JONGEBLOED, WL; BOERING, G; VISSINK, A

    Secondary retention refers to the cessation of eruption of a tooth after emergence. This may be the result of pathological changes in the periodontal ligament. The aim of this study was to describe the morphological and histological aspects of the radicular surface of secondarily retained permanent

  19. A case report of congenital sensory neuropathy with anhidrosis

    International Nuclear Information System (INIS)

    Lee, Won Hyong; Chang, Hae Soon; Han, Man Chung; Lee, Suck Hyun; Lee, Duk Yong

    1974-01-01

    Congenital sensory neuropathy with anhidrosis is rare disease and may be confused with other cause of pain insensitivity or indifference. Other cause of pain insensitivity include congenital indifference to pain, congenital sensory neuropathy, hereditary sensory radicular neuropathy, nonprogressive sensory radicular neuropathy, syringomyelia, and hysterical analgesia. It is hereditary disease which is transmitted with autosomal recessive trait. The patient is 8 years old Korean male with complaint of swelling and local heat on right knee joint. Generalized analgesia is noted on physical examination. The skin is dry and coarse with no evidence of sweating. Delayed motor development was noted on early children. Mental development is retarded. On past history, patient showed unpredictable rises of temperature, though the general condition remained good. Multiple painless fracture on right humerus and right metatasal bone was occurred. Rt.knee radiograms show marked swelling of soft tissue and periosteal calcification on distal femru,which are resemble with neurotrophic joint

  20. Frequency of odontogenic cysts and tumors: a systematic review.

    Science.gov (United States)

    Johnson, Nigel R; Gannon, Orla M; Savage, Neil W; Batstone, Martin D

    2014-02-01

    A systematic review of the literature from 1993 to 2011 was undertaken examining frequency data of the most common odontogenic cysts and tumors. Seven inclusion criteria were met for the paper to be incorporated. In the preliminary search 5231 papers were identified, of these 26 papers met the inclusion criteria. There were 18 297 odontogenic cysts reported. Of these there were 9982 (54.6%) radicular cysts, 3772 (20.6%) dentigerous cysts and 2145 (11.7%) keratocystic odontogenic tumors. With the reclassification of keratocystic odontogenic tumor in 2005 as an odontogenic tumor, there were 8129 odontogenic tumors reported with 3001 (36.9%) ameloblastomas, 1163 (14.3%) keratocystic odontogenic tumors, 533 (6.5%) odontogenic myxomas, 337 (4.1%) adenomatoid odontogenic tumors and 127 (1.6%) ameloblastic fibromas. This systematic review found that odontogenic cysts are 2.25 times more frequent than odontogenic tumors. The most frequent odontogenic cyst and tumor were the radicular cyst and ameloblastoma respectively. © 2013 Wiley Publishing Asia Pty Ltd.

  1. Radiographic analysis of odontogenic cysts showing displacement of the mandibular canal

    International Nuclear Information System (INIS)

    Cho, Bong Hae

    2003-01-01

    To assess the radiographic findings of odontogenic cysts showing displacement of the mandibular canal using computed tomographic (CT) and panoramic images. CT and panoramic images of 63 odontogenic cysts (27 dentigerous, 16 odontogenic keratocysts, and 20 radicular cysts) were analyzed to evaluate the following parameters: the dimension and shape of the cysts, and the effect of the cysts on the mandibular canal and cortical plates. Of the 63 cysts examined in the study, 35 (55.6%) showed inferior displacement of the mandibular canal and 46 (73.0%) showed perforation of the canal. There were statistically significant differenced between CT and panoramic images in depicting displacement and perforation of the mandibular canal. Cortical expansion was seen in 46 cases (73.0%) and cortical perforation in 23 cases (36.5%). The radicular cysts showed cortical expansion and perforation less frequently than the other cyst groups. Large cysts of mandible should be evaluated by multiplanar CT images in order to detect the mandibular canal and cortical bone involvement.

  2. Analysis of silver stained nucleolar organizing regions in odontogenic cysts and tumors.

    Science.gov (United States)

    Prasanna, Md; Charan, Cr; Reddy Ealla, Kranti Kiran; Surekha, V; Kulkarni, Ganesh; Gokavarapu, Sandhya

    2014-09-01

    The present study aimed to investigate the probable differences in cell proliferation index of odontogenic cysts and tumors by means of a comparative silver stained nucleolar organizing region (AgNOR) quantification. This descriptive cross-sectional study was done on archival paraffin blocks (n = 62), consisting of 10 odontogenic keratocysts, 10 dentigerous cysts, 10 radicular cysts, 10 conventional ameloblastomas, 10 adenomatoid odontogenic tumors, 10 calcifying epithelial odontogenic tumors and 2 ameloblasic carcinomas. The mean AgNOR count of odontogenic cysts was 1.709 and the benign odontogenic tumors was 1.862. Highest AgNOR count was recorded in odontogenic keratocyst and lowest was seen in radicular cyst. Statistically significant difference in AgNOR counts of ameloblastoma and adenomatoid odontogenic tumor, amelobalastoma and calcifying epithelial odontogenic tumor, benign odontogenic tumors and ameloblastic carcinoma were seen. AgNORs in ameloblastic carcinoma were more in number and more widely spread. AgNOR technique may be considered a good indicator of cell proliferation in odontogenic cysts and tumors.

  3. A case report of congenital sensory neuropathy with anhidrosis

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Won Hyong; Chang, Hae Soon; Han, Man Chung; Lee, Suck Hyun; Lee, Duk Yong [Seoul National University College of Medicine, Seoul (Korea, Republic of)

    1974-10-15

    Congenital sensory neuropathy with anhidrosis is rare disease and may be confused with other cause of pain insensitivity or indifference. Other cause of pain insensitivity include congenital indifference to pain, congenital sensory neuropathy, hereditary sensory radicular neuropathy, nonprogressive sensory radicular neuropathy, syringomyelia, and hysterical analgesia. It is hereditary disease which is transmitted with autosomal recessive trait. The patient is 8 years old Korean male with complaint of swelling and local heat on right knee joint. Generalized analgesia is noted on physical examination. The skin is dry and coarse with no evidence of sweating. Delayed motor development was noted on early children. Mental development is retarded. On past history, patient showed unpredictable rises of temperature, though the general condition remained good. Multiple painless fracture on right humerus and right metatasal bone was occurred. Rt.knee radiograms show marked swelling of soft tissue and periosteal calcification on distal femru,which are resemble with neurotrophic joint.

  4. Cysts of the periapical region in children: A 19-year institutional review

    Directory of Open Access Journals (Sweden)

    Ajay Telang

    2009-01-01

    Full Text Available Background: There are very few studies that have been done specifically on cysts of the periapical region in children. Aim: To do a retrospective analysis of specimens received as cysts of periapical region in children. Design: A Total of 3142 oral biopsies received over a period of 19 years (1987- 2005 at the department of oral pathology A.B. Shetty Memorial Institute of Dental Sciences, Derelakatte, Mangalore, India were retrieved and all paediatric oral biopsies were further histopathologically analyzed. Results: Our study found that 39% of the total paediatric oral biopsies received were cysts and the commonest cyst was radicular cyst (43.3% followed by dentigerous cyst (20.6′0, odontogenic keratocyst (8.6′0 and lateral periodontal cyst (1.7% which was different from most reported studies. Conclusion: Radicular cyst is the commonest cyst reported in this study which is different from most reported studies probably because of the type of biopsies received at our institute.

  5. Intradiscal corticosteroid injections in spondylotic cervical radiculopathy

    International Nuclear Information System (INIS)

    Fayad, Fouad; Rannou, Francois; Rahmani, Lamia; Lefevre-Colau, Marie-Martine; Nys, Alain; Poiraudeau, Serge; Ledoux, Michel; Revel, Michel; Drape, Jean L.; Chevrot, Alain

    2007-01-01

    The purpose of this study was to evaluate treatment outcomes with intradiscal injection of corticosteroids (IDIC) in cervical spondylotic radiculopathy. Twenty consecutive patients were treated with intradiscal injection of 25 mg of acetate of prednisolone under fluoroscopic control. All patients had previously received a nonsurgical treatment for at least 3 months without success. Outcomes were assessed 1, 3 and 6 months after IDIC. Radicular pain reduction as scored on a visual analogue scale (VAS 100-mm length) was statistically significant at 1 month (19.0±28.0 mm; p=0.008), 3 months (25.2±27.5 mm; p=0.002), and 6 months (24.6±28.4 mm; p=0.001). In all, 40% of treated patients described at least 50% pain improvement 6 months after treatment. Four patients had complete relief of radicular pain. In conclusion, IDIC should be an alternative in the nonsurgical management of cervical spondylotic radiculopathy. (orig.)

  6. Research

    African Journals Online (AJOL)

    abp

    10 oct. 2013 ... qualité de la vie, 44,2% des malades présentent des troubles du sommeil. Sur le plan thérapeutique l'évolution a été favorable chez 78,8% des patients sous ..... Management of Neck Pain and Radicular Symptoms. Am Fam.

  7. Evaluation of apical extrusion of debris during ultrasonic versus rotary instrumentation

    Directory of Open Access Journals (Sweden)

    Araquam, Karolline Rodrigues

    2009-01-01

    Full Text Available Objetivo: O objetivo deste estudo foi comparar a extrusão apical de debris durante a instrumentação rotatória versus ultra-sônica de canais radiculares. Metodologia: A amostra constituiu-se de 20 pré-molares inferiores com dimensões radiculares similares. Para coleta do material extruído apicalmente durante a instrumentação endodôntica, foram fixados recipientes de resina acrílica na superfície externa das raízes. Todos os dentes tiveram os terços cervical e médio dos canais radiculares preparado com brocas Gates-Glidden. Após odontometria, a instrumentação apical foi realizada com sistema ultra-sônico ou sistema rotatório (n=10/grupo. Os recipientes de resina foram pesados antes e após a instrumentação e a diferença de peso foi considerada a quantidade de material extruído. Os dados foram analisados por teste de Mann-Whitney, ao nível de significância de 0,05. Resultados: Houve grande variabilidade de quantidade de material extruído para ambas as técnicas de instrumentação, com valores de 0,0009 a 0,0860 g. Não houve diferença estatisticamente significante entre os dois grupos (P>0. 05. Conclusão: Pode-se concluir que ambas as técnicas de instrumentação testadas, com ultra-som ou sistema rotatório, apresentaram extrusão apical de debris em quantidade semelhante

  8. Irradiation effect on in vitro organogenesis, callus growth and plantlet development of Gerbera jamesonii Efeito da irradiação na organogênese in vitro, crescimento de calos e desenvolvimento de plântulas de gerbera

    Directory of Open Access Journals (Sweden)

    Nor A Hasbullah

    2012-06-01

    Full Text Available The present work was carried out to study the effects of gamma irradiation on in vitro growth of explants, callus and the formation of shoots and plantlets. Irradiation is known to exhibit or inhibit the differentiation of cells and growth of plants in vitro, which helps in producing new plant varieties. Gamma irradiation is one of the physical mutagens that are widely used for mutation breeding. A gradual decline was observed in the number of shoots regenerated from irradiated petiole explants compared to control. Numbers of shoots regenerated from irradiated petiole explant cultured on Murashige & Skoog medium supplemented with 2.0 mg L-1 BAP and 0.5 mg L-1 NAA was reduced to 6.6±0.9 from 7.5±0.4 (control when explants were exposed to 20 Gray of irradiation dose. Similar observation was reported on effects of gamma irradiation on in vitro propagated plantlets. Gradual decline was observed based on plant height as the dose of gamma irradiation increased. A significant decline was observed in the fresh weight of irradiated callus compared to control. In this case, growth responses of callus were strongly influenced by the radiation dose. The fresh weight of callus was reduced to 76.4±2.2% compared to 89.7±0.5% of control when callus tissues were exposed to 20 Gy.O presente trabalho foi realizado para estudar os efeitos da radiação gama no crescimento in vitro de explantes de calos, e a formação de brotos e mudas. A irradiação é conhecida por induzir ou inibir a diferenciação de células e o crescimento das plantas in vitro, o que ajuda na produção de novas variedades vegetais. Radiação gama é um dos agentes mutagenicos que são amplamente utilizados para o melhoramento através da mutação. Um declínio gradual foi observado no número de brotos regenerados a partir de explantes de pecíolos irradiados comparado com o controle. O número de brotações regeneradas de explantes de pecíolos irradiados, cultivados em meio

  9. Avaliação imediata da dor e edema em lesão muscular induzida por formalina e tratada com laser 808 nm Immediate pain and edema assessment in muscular injury induced by formalin and treated with low-level laser (808nm

    Directory of Open Access Journals (Sweden)

    Emerson Borato

    2008-10-01

    Full Text Available O laser de baixa potência induz a bioestimulação celular, podendo acelerar a cicatrização de feridas, promover a regeneração do músculo esquelético, diminuir a resposta inflamatória, estimular a neoformação de vasos sanguíneos e diminuir a dor. O objetivo deste estudo foi analisar os efeitos de três doses de laser de baixa intensidade (808nm, na dor e edema imediatos, em ratos submetidos a lesão experimental do músculo gastrocnêmio lateral. Foram utilizados 24 ratos Wistar, distribuídos aleatoriamente em quatro grupos, sendo: GC - animais lesionados e tratados com aparelho desligado (simulacro; G20 - animais lesionados e irradiados com dose de 20J/cm²; G50 - animais lesionados e irradiados com 50J/cm; e G100 - animais lesionados e irradiados com 100J/cm². Para a produção da lesão experimental, introduziu-se 0,1mL de formalina a 5% no ventre do músculo gastrocnêmio lateral direito. A avaliação da dor ocorreu através do tempo de elevação da pata (TEP e o edema foi avaliado com auxílio de paquímetro metálico; ambas as avaliações ocorreram pré-lesão, pós-lesão, pós-tratamento, duas, oito e 24 horas pós-lesão. Os resultados mostraram aumento significativo do TEP e da avaliação com paquímetro, após a indução da lesão. Conclui-se que laser nos parâmetros utilizados não produziu diminuição na dor e edema, em animais submetidos a lesão muscular com injeção de formalina a 5%.Low-level laser therapy induces to cellular bioestimulation and can accelerate wound healing, promote skeletal muscle regeneration, decrease inflammatory response, stimulate neovascularization and decrease pain. The aim of this study was to analyze the effects of three doses of low-level laser therapy (808 nm, in the immediate pain and edema, in rats submitted to experimental injury of the lateral gastrocnemius muscle. Twenty four Wistar rats, randomly distributed in the following four groups were used: CG - injured and treated

  10. Tratamiento no quirúrgico de lesiones periapicales Non-surgical treatment of periapical lesions

    Directory of Open Access Journals (Sweden)

    Pedro Pablo Ferro Benítez

    2005-08-01

    Full Text Available El tratamiento de dientes con lesiones periapicales crónicas ha sido estudiado por diferentes autores en el campo endodóntico. Basados en los resultados obtenidos en diferentes trabajos experimentales, nos propusimos realizar la presente investigación, tomando 30 dientes humanos que al momento de realizar el tratamiento pulpo-radicular mostraban presencia de lesiones periapicales con diámetros variables, por encima de los 5 mm . Se tuvieron en cuenta 2 grupos: en uno de ellos se les realizaron a los conductos radiculares rellenos temporales de pasta de hidróxido de calcio y agua destilada; en el otro grupo a estos conductos se les realizaron rellenos temporales con pasta de hidróxido de calcio, agua destilada y paramonoclorofenol alcanforado. Se evaluó la disminución de las lesiones periapicales en ambos grupos a los 3 y 6 meses de iniciado el tratamiento, sin que se observaran diferencias estadísticamente significativas. Igual ocurrió en la evaluación de la reparación ósea periapical a los 9 meses de iniciado el tratamiento. Con ambas técnicas los resultados fueron satisfactorios, lo que demuestra una participación activa del hidróxido de calcio en la reparación de las lesiones periapicales, independientemente de su asociación con el paramonoclorofenol alcanforado.The treatment of teeth with chronic periapical lesions has been studied by different authors in the endodontics field. Based on the results attained in different experimental works, we proposed ourselves to make the present research taking 30 human teeth that at the time of applying the pulpar radicular treatment presented periapical lesions with variable diameters over 5 mm. Two groups were taken into account: in one of them, the radicular ducts were temporarily filled up with calcium hydroxide paste and distilled water, whereas in the other one these ducts were filled up with calcium hydroxide paste, distilled water and camphorated paramonochlorophenol. The

  11. Atributos químicos do solo, crescimento radicular e produtividade do arroz de acordo com a aplicação de escórias Soil chemical attributes, root growth and rice yield according to slag application

    Directory of Open Access Journals (Sweden)

    Juliana Garcia Carvalho-Pupatto

    2004-12-01

    Full Text Available Resíduos industriais são fontes alternativas de nutrientes para as plantas e sua utilização decorre da necessidade de diminuir o acúmulo dos resíduos nos centros de produção. O objetivo deste trabalho foi avaliar o efeito de escórias de siderurgia nos atributos químicos do solo, no desenvolvimento e na produtividade de grãos do arroz de terras altas irrigado por aspersão. O delineamento experimental foi em blocos casualizados, com três tratamentos constituídos de duas escórias, alto-forno (196 g kg-1 de Si e aciaria (56 g kg-1 de Si, e a testemunha sem aplicação, com oito repetições. As escórias podem ser usadas como corretivo de acidez do solo e como fonte de silício. As alterações nos atributos químicos do solo estão relacionadas com a composição química das escórias. A escória de alto-forno proporcionou maior crescimento radicular em profundidade e melhor distribuição no perfil do solo e, conseqüentemente, maior produção de massa de matéria seca da parte aérea e produtividade de grãos de arroz.Use of industrial residues as alternative sources of nutrients to the plants is due to the necessity of reducing their accumulation in the production sites. The objective of this work was to evaluate the effect of metallurgy slag in soil chemical attributes, in development and in grain yield of upland rice sprinkler irrigated. The experiment was carried out in a randomized block design, with three treatments constituted by two scums, blast furnace (196 g kg-1 of Si and steel slag (56 g kg-1 of Si, and a control without application, with eight replications. The scums can be used as corrective of soil acidity and silicon source. Alterations in the soil chemical attributes are related to the chemical composition of the scums. Blast furnace slag resulted in higher root growth in depth and better distribution in the profile soil provides higher shoot dry matter yield and grain yield.

  12. Agricultural yields of irradiated sewage sludge; Rendimiento agricola de barros cloacales irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Magnavacca, Cecilia; Miranda, E; Sanchez, M [Comision Nacional de Energia Atomica, Ezeiza (Argentina). Centro Atomico Ezeiza

    1999-07-01

    Lettuce, radish and ryegrass have been used to study the nitrogen fertilization of soil by sewage sludge. The results show that the irradiated sludge improve by 15 - 30 % the production yield, compared to the non-irradiated sludge. (author)

  13. Transport safety of irradiated fuel; Seguridad en el transporte de combustible irradiado.

    Energy Technology Data Exchange (ETDEWEB)

    Rosa Giménez, R. de la

    2016-07-01

    The complication of the transport of spent fuel is significant not only because of the danger of the transported good itself but also for the size of the package. The number of this kind of expeditions are supposed to increase considerably in the coming years, for that reason is necessary for specialized companies such as ETSA be prepared. To this end, ETSA has already implemented most of the measures necessary to ensure safety - security of transport, not only during its execution but throughout the preparation.

  14. [Upper lateral incisor with 2 canals].

    Science.gov (United States)

    Fabra Campos, H

    1991-01-01

    Clinical case summary of the patient with an upper lateral incisor with two root canals. The suspicion that there might be an anatomic anomaly in the root that includes a complex root canal system was made when an advanced radicular groove was detected in the lingual surface or an excessively enlarged cingulum.

  15. Comparative Evaluation of Ankaferd Blood Stopper, Ferric Sulfate ...

    African Journals Online (AJOL)

    2016-07-24

    Jul 24, 2016 ... with extensive caries but without evidence of radicular pathology. The coronal pulp is amputated, and the ... Caries lesion should be approximating to the pulp. • No interradicular or periapical radiolucency or pulp ..... be used in the occlusal cavity. Holan et al.[24] assessed the success of SSC and AM ...

  16. Group Distal Movement of Teeth using Micro-Screw-Implant Anchorage-A Case Report.

    Science.gov (United States)

    Kalarickal, Biju

    2014-05-01

    This case report describes a case of orthodontic tooth movement of a 29-year-old female patient utilizing maxillary posterior edentulous area. Micro-implants were placed at buccal edentulous spaces and inter-radicular space for retraction of entire maxillary dentition. An overjet reduction of 8mm and good posterior occlusion were achieved.

  17. Distribuição de raízes de mamoeiro sob diferentes sistemas de irrigação localizada em latossolo de tabuleiros costeiros Papaya root distribution under different trickle irrigation systems in a coast table land latossol

    Directory of Open Access Journals (Sweden)

    Eugênio Ferreira Coelho

    2005-04-01

    Full Text Available O sistema radicular de uma planta é responsável pela absorção de água do solo e deve ser considerado nos cálculos da quantidade de água necessária para irrigação. O trabalho teve por objetivo definir a distribuição do sistema radicular do mamoeiro irrigado por gotejamento e microaspersão em solo de Tabuleiro Costeiro do Recôncavo Baiano. Foram feitas duas trincheiras em diferentes posições relativas a duas plantas irrigadas por microaspersão e gotejamento superficial e enterrado a 0,25 m, com as linhas laterais junto à fileira de plantas, com dois gotejadores por planta, cada um a 0,40 m de distância das mesmas. Na microaspersão, usou-se um emissor para duas plantas, entre duas fileiras simples. As amostras de raízes foram extraídas em malha de pontos nessas trincheiras de forma a abranger uma seção completa do sistema radicular. As raízes foram separadas do solo e digitalizadas em computador, sendo as imagens processadas por um aplicativo computacional que estimou o comprimento total e o diâmetro médio das mesmas em cada posição no perfil. O sistema radicular ocupou maior volume de solo na microaspersão em relação ao gotejamento, com maior concentração das raízes na direção do microaspersor. A profundidade efetiva do sistema radicular do mamoeiro irrigado por gotejamento superficial ou enterrado foi de 0,45 m e na microaspersão variou de 0,15 m na direção perpendicular à fileira de plantas a 0,35 m entre a planta e o microaspersor.The root system is responsible for water uptake and should be considered in irrigation water requirement calculations. The work had as objective to define papaya root distribution under sprayer and drip irrigation in a Tableland Coast Soil of Recôncavo Baiano. Two trenches were dug at different positions related to plants irrigated by sprayer and surface and buried drip irrigation. The lateral lines irrigation were set close to the plant row with two emitters per pant, each

  18. Rendimento de massa seca e absorção de fósforo pelo milho afetado pela aplicação de fósforo, calcário e inoculação com fungos micorrízicos Dry matter of corn and phosphorus uptake as affected by liming, rates of phosphorus, and mycorrhizae inoculation

    Directory of Open Access Journals (Sweden)

    Julio Cesar Pires Santos

    1996-04-01

    Full Text Available A colonização do sistema radicular com micorrizas pode aumentar a absorção de P e com isto aumentar o crescimento das plantas, o que parece ser mais comum em solos com baixa disponibilidade de P. No presente trabalho, a inoculação com fungos micorrízicos arbusculares (FMA, objetivou avaliar seu efeito na morfologia do sistema radicular, na produção de massa seca e na absorção de fósforo pelo milho. Utilizou-se o latossolo bruno argiloso, e os tratamentos consistiram de dois valores de pH (4,8 e 5,5, duas doses de fósforo (25 e 100mg P/kg de solo e inoculação com FMA. O experimento foi conduzido em casa de vegetação com cinco repetições, distribuídas no delineamento experimental completamente casualisado. Aos 46 dias após a emergência as plantas foram colhidas, e nelas determinou-se a produção de massa seca de parte aérea e de raízes, o comprimento e o raio médio radicular. a porcentagem e intensidade de colonização micorrízica e a absorção de fósforo. A inoculação com FMA aumentou a CM mas não afetou a produção de massa seca e absorção de fósforo pelo milho, embora as raízes mostrassem menor comprimento, indicando que as hifas extraradiculares compensaram o crescimento radicular. A adição de fósforo e a elevação do pH aumentaram a massa seca da parte aérea e raízes, a absorção de fósforo e o comprimento radicular.The existence of mycorrhiza in the plant roots may increase phosphorus uptake and thus crop yield. This effect, however, seems to occur only in phosphorus deficient soils. The objetive of this work was to evaluate the effect of soil pH, rates of phosphorus addition, and mycorrhiza inoculation on dry matter yield of corn and on phosphorus uptake. The experiment was run in a greenhouse, using an oxisol, with five replicates per treatment distributed in a completely randomized experimental design. The treatments, a 2x2x2 factorial, were two rates of phosphorus (25 and 100mg P/kg, two p

  19. Alelopatia de extratos aquosos de canela-sassafrás (Ocotea odorifera (Vell. Rohwer Allelopathy of Brazilian sassafras (Ocotea odorifera (Vell. Rohwer aqueous extracts

    Directory of Open Access Journals (Sweden)

    Flávia Maria da Silva Carmo

    2007-09-01

    Full Text Available Estudos de alelopatia investigam os efeitos positivos e negativos que metabólitos secundários de plantas, microrganismos ou fungos exercem sobre o desenvolvimento de indivíduos vizinhos. Nesse trabalho foram investigados os efeitos de extratos aquosos de folhas, cascas de tronco e cascas de raízes de canela-sassafrás (Ocotea odorifera (Vell. Rowher sobre a germinabilidade das sementes, desenvolvimento do sistema radicular e da parte aérea, teor de clorofila da parte aérea e respiração das células radiculares de plântulas de sorgo (Sorghum bicolor L. Moench cv. Embrapa BR 303. Os extratos foram preparados adicionando o material vegetal seco e moído oriundo de cada órgão à água destilada e deionizada na proporção 1:10 (p/v. Após agitação constante por 24 h, as soluções foram decantadas e filtradas através de papel de filtro sob vácuo, constituindo os extratos testados. Os extratos aquosos de cascas de tronco e de raízes causaram inibição do desenvolvimento do sistema radicular das plântulas de sorgo e a sua parte aérea teve o crescimento estimulado pelo extrato de cascas de raízes. Os extratos de folhas e de cascas de tronco induziram aumento da biomassa fresca do sistema radicular e diminuição significativa do teor de clorofila. Todos os extratos causaram efeitos negativos sobre a respiração radicular das plântulas de sorgo. Concluiu-se que metabólitos secundários da canela-sassafrás causaram alterações metabólicas e morfológicas nas plantas de sorgo e que, portanto, a presença de canela-sassafrás no ambiente pode desencadear efeitos similares sobre outras espécies vegetais na sua vizinhança.Allelopathic studies investigate the positive and negative effects of secondary metabolites of plants, microorganisms and fungi on the development of neighboring individuals. In this work, the allelopathic effects of aqueous extracts of leaves, bark and root bark of Brazilian sassafras (Ocotea odorifera (Vell

  20. Anterior cervical discectomy and fusion for the management of axial neck pain in the absence of radiculopathy or myelopathy

    Science.gov (United States)

    Riew, K Daniel; Ecker, Erika; Dettori, Joseph R.

    2010-01-01

    Study design: Systematic review Study rationale: Anterior cervical discectomy and fusion (ACDF) is a proven, effective treatment for relieving neck pain due to degenerative conditions of the cervical spine. Since most patients also present with radiculopathy or myelopathy, little is known as to the effectiveness of ACDF to relieve pain and improve function in patients without radicular or myelopathic symptoms. Objective: To examine the clinical outcome in patients undergoing (ACDF) for axial neck pain without radicular or myelopathic symptoms. Methods: A systematic review was undertaken for articles published up to March 2010. Electronic databases and reference lists of key articles were searched to identify studies evaluating ACDF for the treatment of axial neck pain only. Radiculopathy and myelopathy, patients who suffered severe trauma, or with tumor/metastatic disease or infection were excluded. Two independent reviewers assessed the strength of evidence using the grading of recommendations assessment, development and evaluation (GRADE) system, and disagreements were resolved by consensus. Results: No comparative studies were identified. Three case series met our inclusion criteria and were evaluated. All studies showed a mean improvement of pain of at least 50% approximately 4-years following surgery. Functional outcomes improved between 32% and 52% from baseline. Most patients reported satisfaction with surgery, 56% in one study and 79% in another. Complications varied among studies ranging from 1% to 10% and included pseudoarthrosis (9%), nonunion and revision (3%) and screw removal (1%). Conclusion: There is low evidence suggesting that patients with axial neck pain without radicular or myelopathic symptoms may receive some improvement in pain and function following ACDF. However, whether this benefit is greater than nontreatment or other treatments cannot be determined with the present literature. PMID:22956927

  1. Reação de clones de umezeiro (Prunus mume sieb. et zucc. e cultivares de pessegueiro a Meloidogyne javanica (treub, 1885 Chitwood, 1949

    Directory of Open Access Journals (Sweden)

    Mayer Newton Alex

    2003-01-01

    Full Text Available Um amplo projeto de estudos sobre a utilização do umezeiro como porta-enxerto para pessegueiro está sendo desenvolvido na FCAV/UNESP, Câmpus de Jaboticabal-SP, devido, especialmente, às promissoras características para uso como redutor de vigor da copa e sua boa qualidade de frutos. Alguns trabalhos na literatura citam o umezeiro como resistente ao nematóide das galhas, entretanto dispõe-se de poucas informações. Neste trabalho, teve-se por objetivo estudar a reação de clones de umezeiro e cultivares de pessegueiro a Meloidogyne javanica. O experimento foi conduzido em casa de vegetação, com 6 tratamentos (Clones 05; 10 e 15 de umezeiro e as cultivares Okinawa, Aurora-1 e Dourado-1 de pessegueiro e 9 repetições. As plantas foram mantidas em vasos de cerâmica contendo uma mistura de solo e areia (1:1, v/v, previamente autoclavada a 121ºC e 1kgf.cm-2 por 2 horas. Aos sessenta dias após o plantio, cada planta foi inoculada com 3.000 ovos e juvenis de segundo estádio de Meloidogyne javanica. Aos 100 dias após a inoculação, as plantas foram colhidas para avaliação da massa de matéria fresca do sistema radicular, número de galhas por sistema radicular, número de ovos e juvenis por 10 g de raízes, número de ovos e juvenis por sistema radicular e fator de reprodução. Verificou-se que todos os clones e cultivares de umezeiro e pessegueiro, respectivamente, mostraram-se resistentes a Meloidogyne javanica.

  2. Avaliação da Produtividade e Adaptabilidade de Acessos de Amendoim Forrageiro para Potencial For-mação/Consorciação de Pastagens no Sul de Minas Gerais

    Directory of Open Access Journals (Sweden)

    Michender Werison Motta Pereira

    2011-08-01

    Full Text Available O objetivo deste trabalho foi avaliar a produção e adaptabilidade de cinco acessos de A. pintoi (BRA 031496, BRA 015121, BRA 013251, BRA 030333 e BRA 022683 e um acesso de A. repens (BRA 031801, visando fomentar estudos para o estabelecimento de cultivares mais produtivas em pastagens da região Sul de Minas Gerais. Os estudos se deram em dois momentos, sendo, o primeiro com a realização do experimento em bandejas para análise da taxa de pegamento dos acessos em casa de vegetação e, o segundo, com a experimentação realizada em vasos, onde cada acesso foi analisado quanto a sobrevivência das mudas, número e comprimento médio de estolões, produção de matéria seca da parte aérea e radicular e taxa de sobrevivência. O acesso de A. pintoi BRA 031496 apresentou os maiores índices de taxa de pegamento em bandejas (70% e produção de matéria seca da parte aérea (21,1g e radicular (7,0g, além de boa perfilhação, acompanhada de uma considerável taxa de crescimento dos estolões. Já o acesso de A. repens BRA 031801 apresentou os menores resultados de taxa de pegamento em bandeja (33,33%, comprimento médio dos estolões aos 45 e 90 dias após o plantio (15,6cm e 16,7cm respectivamente e produção de matéria seca da parte aérea (10,7g e radicular (4,7g. Após o enraizamento das mudas em bandejas de isopor todos os acessos promoveram 100% de sobrevivência em vasos.

  3. Growth, flowering and fruiting in vitro pineapple ( Ananas comosus L ...

    African Journals Online (AJOL)

    The experiment was carried out in a greenhouse, located in Tehran city, Iran. The objectives of this study was to evaluate the effects of fertilizer and acidic soil on the foliar and radicular growth of micropropagated plantlets of the pineapple cv. Merr (Ananas comosus L.). We evaluated the growth of that genotype in five ...

  4. Lesiones periapicales: diagnóstico y tratamiento

    OpenAIRE

    A. García-Rubio; A.L. Bujaldón-Daza; A. Rodríguez-Archilla

    2015-01-01

    Las lesiones periapicales resultado de la necrosis de la pulpa dental son las patologías que más frecuentemente ocurren encontradas en el hueso alveolar. El tratamiento consiste en la eliminación de los agentes infecciosos mediante el tratamiento del canal radicular, permitiendo la cicatrización de la lesión.

  5. Migration of an Intracranial Subdural Hematoma to the Spinal Subdural Space: A Case Report.

    Science.gov (United States)

    Kwon, O Ik; Son, Dong Wuk; Kim, Young Ha; Kim, Young Soo; Sung, Soon Ki; Lee, Sang Weon; Song, Geun Sung

    2015-09-01

    A 57-year-old man complained of severe lower back pain and radicular pain in both legs for 1 week after falling from a ladder. Magnetic resonance imaging (MRI) of the spine showed a subdural hematoma (SDH), which was surgically removed. The patient had no back pain or the radicular leg pain at 2 weeks post-surgery. However, he complained of diffuse headaches upon follow-up. Brain computed tomography (CT) and MRI revealed an intracranial SDH, which was immediately removed by surgery. During his 1-year follow-up, he reported that the pain had resolved without recurrence. Simultaneous spinal and intracranial SDH are rare and no standard treatment exists for this condition. This case suggests that it is possible that an intracranial SDH can migrate into the cerebrospinal fluid (CSF) space through an arachnoid tear. CSF circulation allows the intracranial SDH to enter subarachnoid spaces encasing the spinal cord. In order to prevent irreversible damage, surgical intervention should be considered for case of spinal SDH with progressive neurological deficits.

  6. Epidural steroid injection for lumbosacral radiculopathy

    International Nuclear Information System (INIS)

    Sung, Mi Sook

    2006-01-01

    Low back pain combined with radicular pain remains as one of the most challenging musculoskeletal problems for its therapeutic management. This malady results from nerve root impingement and/or inflammation that causes neurologic symptoms in the distribution of the affected nerve root(s) Conservative treatment, percutaneous spine interventions and surgery have all been used as treatment; and the particular treatment that's chosen depends on the severity of the clinical and neurologic presentation. In 1930, Evans reported that sciatica could treated by epidural injection. The use of epidural corticosteroid injections for the treatment of axial and radicular back pain was first reported in 1953. Epidural steroid injections are currently used by many medical professionals for the treatment of lumbosacral radiculopathy. Performing 'blind' epidural steroid injection lacks target specificity that often results in incorrect delivery of medication to the lesion. Imaging-guided steroid injections are now becoming more popular despite the controversy regarding their efficacy. Many reports, including a few randomized controlled trials, have documented the clinical utility of epidural steroid injections

  7. Epidural steroid injection for lumbosacral radiculopathy

    Energy Technology Data Exchange (ETDEWEB)

    Sung, Mi Sook [The Catholic University of Korea, Pucheon (Korea, Republic of)

    2006-06-15

    Low back pain combined with radicular pain remains as one of the most challenging musculoskeletal problems for its therapeutic management. This malady results from nerve root impingement and/or inflammation that causes neurologic symptoms in the distribution of the affected nerve root(s) Conservative treatment, percutaneous spine interventions and surgery have all been used as treatment; and the particular treatment that's chosen depends on the severity of the clinical and neurologic presentation. In 1930, Evans reported that sciatica could treated by epidural injection. The use of epidural corticosteroid injections for the treatment of axial and radicular back pain was first reported in 1953. Epidural steroid injections are currently used by many medical professionals for the treatment of lumbosacral radiculopathy. Performing 'blind' epidural steroid injection lacks target specificity that often results in incorrect delivery of medication to the lesion. Imaging-guided steroid injections are now becoming more popular despite the controversy regarding their efficacy. Many reports, including a few randomized controlled trials, have documented the clinical utility of epidural steroid injections.

  8. Pattern and presentation of odontogenic jaw cysts: a clinical experience

    International Nuclear Information System (INIS)

    Awan, M.U.A.; Ibrahim, M.W.

    2017-01-01

    Objective: To determine the pattern and presentations of odontogenic jaw cysts in patients reporting at the Armed Forces Institute of Dentistry. Study Design: Descriptive study. Place and Duration of Study: Armed Forces Institute of Dentistry, from Jan to Dec 2007. Material and Methods: Hundred patients including 70 males and 30 females with the age range 5-65 years were included in the study. History, clinical examination, radiographic examination and histopathologic examination of lesion were carried out for each patient. A proforma was filled for each patient for all relevant information, presentation and pattern. Diagnosis was confirmed by histopathology. Data were analyzed using SPSS version 10. Results: Out of total 100 patients, 58 percent were diagnosed with radicular cysts, 25 percent with dentigerous cysts, 15 percent with odontogenic keratocyst, 1 percent patient with calcifying epithelial odontogenic cyst and 1 percent patient was diagnosed with eruption cyst. Conclusion: The study demonstrates that radicular cyst was the most common odontogenic cysts followed by dentigerous and odontogenic keratocysts respectively in our study sample. (author)

  9. Pro-inflammatory cytokine levels in human apical periodontitis: Correlation with clinical and histological findings.

    Science.gov (United States)

    Jakovljevic, Aleksandar; Knezevic, Aleksandra; Karalic, Danijela; Soldatovic, Ivan; Popovic, Branka; Milasin, Jelena; Andric, Miroslav

    2015-08-01

    This study aimed to compare the levels of tumour necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and interleukin-6 (IL-6) between apical periodontitis lesions with different clinical and histological features. Based on clinical data and history of disease, 100 human apical periodontitis lesions were categorised as either asymptomatic or symptomatic lesions. According to histological examination, lesions were divided into periapical granulomas and radicular cysts. Pulp tissues of 25 impacted wisdom teeth were used as controls. Homogenised tissue samples were centrifuged and supernatants were used for the determination of cytokine levels by enzyme-linked immunosorbent assay. Significantly higher levels of IL-1β and IL-6 were found in symptomatic lesions compared with asymptomatic lesions and control tissues (P < 0.001, P < 0.001, respectively). The concentration of IL-1β was significantly higher in radicular cysts compared with periapical granulomas (P = 0.003). Symptomatic lesions, as judged by high local production of IL-1β and IL-6, represent an immunologically active stage of the disease. © 2014 Australian Society of Endodontology.

  10. Etiology and epidemiology of Pythium root rot in hydroponic crops: current knowledge and perspectives

    Directory of Open Access Journals (Sweden)

    John Clifford Sutton

    2006-09-01

    knowledge and understanding of the etiology and epidemiology of root rot, and its effects on the physiology of the whole plant, are discussed in relation to new research directions and development of better practices to manage the disease in hydroponic crops. Focus is on methods and technologies for tracking Pythium and root rot, and on developing, integrating, and optimizing treatments to suppress the pathogen in the root zone and progress of root rot.A etiologia e a epidemiologia da podridão radicular causada por Pythium spp. em cultivo hidropônico são revisadas com ênfase em conhecimentos e conceitos considerados importantes para o manejo de doenças em estufas comerciais. A podridão radicular causada por Pythium continuamente ameaça a produtividade de diversas culturas em sistemas hidropônicos, incluindo pepino, tomate, pimentão, espinafre, alface, capuchinha, rúcula, rosa, e crisântemo. Os principais agentes causais incluem Pythium aphanidermatum, Pythium dissotocum, espécies de Pythium do grupo F e Pythium ultimum var. ultimum. São apresentadas e discutidas as principais fontes do inóculo primário de Pythium spp. em sistemas hidropônicos, os processos de infecção e colonização de raízes pelos patógenos, o desenvolvimento de sintomas, a produção de inóculo em raízes, e a dispersão do inóculo na solução nutritiva. Descobertas recentes da existência de um elicitor produzido especificamente por P. aphanidermatum que pode provocar a necrose (descoloração das raízes infectadas e a transição da infecção da fase biotrofica para necrotrofica são consideradas. Efeitos de fatores ligados ao hospedeiro (susceptibilidade à doença, estádio fenológico, exsudatos radiculares, compostos fenólicos, ao ambiente radicular (meio de enraizamento, concentrações de oxigênio dissolvido e compostos fenólicos na solução nutritiva, comunidades microbianas e temperatura e as interferências humanas (práticas de cultivo e medidas de controle sobre

  11. Conferencias anatomoclínicas: caso no. veintidos

    Directory of Open Access Journals (Sweden)

    San Juan de Dios Hospital

    1955-05-01

    Enfermedad Actual: Se inició hace unos dos años por la aparición de constipación pertinaz, pirosis, acedías, dolor epigástrico y sensación de hambre dolorosa que calmaba con las comidas; ocasionalmente ha presentado melenas. Hace seis días, sintió intenso dolor epigástrico de tipo punzante, irradiado hacia el ángulo inferior del omoplato izquierdo, seguido poco después de gran distención abdominal con retención de heces y gases, vómito y hematemesis inicial. Estos fenómenos fueron tratados fuera del hospital con purgantes y enemas sin ningún resultado, pues no retuvo los enemas y vomitó los purgantes. El cuadro se agudizó adquiriendo los caracteres de un abdomen agudo, por lo cual ingresa al hospital.

  12. [Developmental radicular groove as a cause of endodontic failure].

    Science.gov (United States)

    Fabra Campos, H; Millet Part, J

    1989-01-01

    A clinical case of apical injury on an upper lateral incisor with endodontical and surgical failures in its treatment is presented. Extraction of the incisor and its study at the stereoscopic microscope showed the existence of a developmental groove running from the cingulum to the end of the root, establishing a communication between the crevice and the apical part of the tooth. Bacterial infection through the groove could provide an explanation for treatment failure.

  13. Cervical radicular block using the CT-guided posterolateral approach

    International Nuclear Information System (INIS)

    Marchegiani, Silvio; Secchi, Adrian; Marangoni, Alberto; Surur, Alberto

    2005-01-01

    Objective: This presentation's goal is to define the indications of the procedure, to describe a new way to access to the foramen, and to evaluate the results. Material and method: Between November 2000 and October 2004, we performed 12 blockades of cervical nerves roots in 11 patients (5 female and 6 males, aged from 37 to 62 years old) with cervical pain without resolution under conventional treatment. The cause of the symptoms included: 7 patients with cervical disc protrusion and 4 patients with cervical degenerative processes diagnosed by previous Magnetic Resonance Imaging (MRI) studies. The levels of the procedure were: 1 in C3, on the right side (8.3%); 2 in C5, on the left side (16.6%); 6 in C6 (5 on the right side and 1 on the left), (50%); and 3 in C7 (25%), under CT guidance alone, with a posterior-lateral access. Results: The first clinical control after 1 hour showed a complete pain remission in all the 11 patients (100%). The second control (15 days after) showed 9 patients (81.9%) without pain, one patient (9,1%) with partial pain relief without medication, and one patient (9,1%) with pain relapse. Finally, in the third control (3 months later) based on ten patients (one of them was not yet on the period of the third control), 7 of them (70%), continued without pain, one patient (10%) showed a partial resolution of the pain without medication, one patient (10%) presented a partial resolution with medication, and one patient (10%), continued with pain and was treated surgically. There was no complication of the procedure in our patients. Conclusion: The cervical nerves root blockade with steroids and anesthetic under CT guidance, with posterolateral access is a safe, minimally invasive procedure, with no complications, that provides a quick solution to the cervical pain. Therefore, this procedure must be considered as a preliminary step before other aggressive treatments such as surgical therapy in a medical decision context. (author)

  14. In vivo evaluation of the sealing ability of two endodontic sealers in root canals exposed to the oral environment for 45 and 90 days Avaliação, in vivo, da capacidade de selamento de dois cimentos endodônticos em canais radiculares expostos ao meio bucal por 45 e 90 dias

    Directory of Open Access Journals (Sweden)

    Patrícia Maria Poli Kopper

    2006-01-01

    Full Text Available This in vivo study evaluated the sealing ability of a resin-based sealer (AH Plus and a zinc oxide-eugenol sealer (Endofill in dogs' teeth, exposed to the oral environment for 45 and 90 days. Forty eight lower incisors from 8 dogs were endodonticaly treated. A stratified randomization determined the sealer use in each root canal. All canals were filled using the lateral condensation technique. The excess filling material at the cervical portion of the root canal was sectioned, leaving a 10-mm obturation length inside the canal. Teeth were provisionally sealed with glass ionomer cement for 24 h and the canals were exposed to the oral environment for either 45 or 90 days. Therefore, the experimental groups were as follows: A45- AH Plus for 45 days; A90- AH Plus for 90 days; E45- Endofill for 45 days; and E90- Endofill for 90 days (n=12. After the experimental period, the dogs were killed and the lower jaw was removed. The incisors were extracted and the roots were covered with two coats of nail varnish. The teeth were immersed in India ink for 96 h and submitted to diaphanization. Dye leakage (in mm was measured using stereomicroscopy (10x magnification. The results were statistically analyzed using two-way ANOVA and Tukey test for multiple comparisons (á = 0.05. Group E90 (2.03±0.94 showed significantly higher mean leakage value than all other groups (pEste estudo in vivo avaliou a capacidade de selamento de um cimento endodôntico resinoso (AH Plus e um a base de óxido de zinco eugenol (Endofill, em dentes de cães, expostos ao meio bucal, por 45 e 90 dias. Foi realizado o tratamento endodôntico de 48 incisivos inferiores de 8 cães. Uma randomização estratificada determinou o tipo de cimento a ser usado em cada canal que foram tratados pela técnica de condensação lateral. Após a obturação, o excesso de material obturador, na porção cervical do canal radicular foi seccionado, restando o comprimento de 10 mm no interior do canal

  15. [Method and procedures in bacteriological study of necrotic teeth].

    Science.gov (United States)

    Rodríguez-Ponce, A; López Campos, A; López Paz, J; Pazos Sierra, R

    1991-01-01

    Research was conducted of 160 radicular canals with necrotic pulp. Results of different bacteriological analyses are presented. Culture analyses in aerobic and anaerobic media, resulted in the isolation of Staphylococcus Epidermidis, Streptococcus Viridans and Corynebacterium sp in the group studied, as the most frequent bacteria. There was no evidence of a specific germ linked with the pulp necrosis.

  16. Innovaciones en el diseño del instrumental manual en endodoncia

    OpenAIRE

    Roig Cayón, Miguel; Brau Aguadé, Esteban; Canalda Sahli, Carlos

    1994-01-01

    En este artículo de divulgación los autores hacen una serie de consideraciones sobre los nuevos instrumentos endodóncicos que están apareciendo en el mercado, con nuevos diseños y diferentes aleaciones, y tratando de enjuiciar su efecto en la preparación biomecánica de los conductos radiculares.

  17. Odontogenic and nonodontogenic cysts: An analysis of 526 cases in ...

    African Journals Online (AJOL)

    There were 406 (77.2%) inflammatory OCs and 103 (19.6%) developmental OCs. Radicular cysts were the most frequent (66.4%), followed by dentigerous (19.2%) and residual (10.8%) cysts. Only nasopalatine duct cyst was found as nOC in this study (3.2%). Conclusion: The distribution of jaw cysts in the Turkish Eastern ...

  18. The prevalence and distribution of radiopaque, calcified pulp stones: A cone-beam computed tomography study in a northern Taiwanese population

    Directory of Open Access Journals (Sweden)

    Chen-Yu Hsieh

    2018-06-01

    Conclusion: Pulp stones are more frequent in maxillary teeth compared to mandibular teeth. Pulp stones in molar teeth were significantly more common than premolars and incisors. CBCT could be a sensitive tool to detect pulp stones, especially simplifying identification of pulp stones in radicular pulp. Knowledge of pulp stones distribution can aid dentists in clinical endodontic treatment.

  19. Dorsal rhizotomy for children with spastic diplegia of cerebral palsy origin: usefulness of intraoperative monitoring.

    Science.gov (United States)

    Georgoulis, George; Brînzeu, Andrei; Sindou, Marc

    2018-04-13

    OBJECTIVE The utility of intraoperative neuromonitoring (ION), namely the study of muscle responses to radicular stimulation, remains controversial. The authors performed a prospective study combining ventral root (VR) stimulation for mapping anatomical levels and dorsal root (DR) stimulation as physiological testing of metameric excitability. The purpose was to evaluate to what extent the intraoperative data led to modifications in the initial decisions for surgical sectioning established by the pediatric multidisciplinary team (i.e., preoperative chart), and thus estimate its practical usefulness. METHODS Thirteen children with spastic diplegia underwent the following surgical protocol. First, a bilateral intradural approach was made to the L2-S2 VRs and DRs at the exit from or entry to their respective dural sheaths, through multilevel interlaminar enlarged openings. Second, stimulation-just above the threshold-of the VR at 2 Hz to establish topography of radicular myotome distribution, and then of the DR at 50 Hz as an excitability test of root circuitry, with independent identification of muscle responses by the physiotherapist and by electromyographic recordings. The study aimed to compare the final amounts of root sectioning-per radicular level, established after intraoperative neuromonitoring guidance-with those determined by the multidisciplinary team in the presurgical chart. RESULTS The use of ION resulted in differences in the final percentage of root sectioning for all root levels. The root levels corresponding to the upper lumbar segments were modestly excitable under DR stimulation, whereas progressively lower root levels displayed higher excitability. The difference between root levels was highly significant, as evaluated by electromyography (p = 0.00004) as well as by the physiotherapist (p = 0.00001). Modifications were decided in 11 of the 13 patients (84%), and the mean absolute difference in the percentage of sectioning quantity per radicular

  20. Morphometric and ultrastructural studies of the effect of infrared laser on rabbit temporo-mandibular joint fibroblasts

    Directory of Open Access Journals (Sweden)

    Ricardo Cornejo Uribe

    2009-06-01

    articulação temporo-mandibular de coelhos que foram irradiados com raio laser e de outras não irradiadas que foram consideradas como controle normal. As doses diarias de irradiação foram de 2 Joules /cm² durante 10 dias. As amostras foram tratadas para microscopia eletrônica de transmissão. Dos fibroblastos normais e irradiados obtiveram-se microfotografias eletrônicas de transmissão com aumentos finais de 11.500 X, realizando-se estudos morfometricos com propósito de quantificar as frações volumétricas dos componentes celulares pertencentes aos tipos celulares assinalados. Das células indicadas avaliaram-se frações volumétricas correspondentes ao núcleo, citoplasma, retículo endoplásmico rugoso, eucromatina e heterocromatina. Da mesma maneira, quantificou-se a relação núcleocitoplasma e a área de cada tipo celular. Os resultados originados do estudo morfométrico comparativo entre fibroblastos normais e irradiados, indicaram que existem diferencas significativas nas frações volumétricas de eucromatina e heterocromatina e fundamentalmente nas áreas celulares de ambos os tipos. Os outros parâmetros quantificados mantiveram-se constantes. A conclusão é que a função celular traduzida em síntese e secreção de colágeno é constante em ambos os tipos celulares, contudo, produto das estimulações com raio laser infravermelho este fibroblasto tem tendência devido a sua percentagem de eucromatina transcripcionalmente ativa a uma sintese imediata e facilitada de proteinas.

  1. Effect of trickle irrigation on root development of the wet bulb and 'pera' orange tree yield in the state of São Paulo, Brazil Efeito da irrigação loclizada no desenvolvimento radicular no bulbo úmido e produção da laranjeira-pera no estado de São Paulo, Brasil

    Directory of Open Access Journals (Sweden)

    Regina C. de M Pires

    2011-12-01

    Full Text Available The aim of this study was to evaluate the effect of different microirrigation designs on root system distribution in wet bulb region, orange orchard yield and quality of orange fruits. The experiment was installed as random blocks with five treatments and four replicates in an orchard of 'Pêra' orange trees grafted on 'Cleopatra' mandarin rootstock. The treatments consisted of: one drip line (T1, two drip lines (T2, four drip lines (T3 per planting row, microsprinkler irrigation (T4 and without irrigation (T5. Irrigation treatments favored yield and ºBrix. The treatment with a single drip line (T1 showed the greatest quantity of roots in relation to the treatments T2 and T3.O objetivo do presente trabalho foi avaliar o efeito de diferentes configurações da irrigação localizada na distribuição do sistema radicular na região do bulbo úmido, na produção e na qualidade dos frutos de laranjeira. O experimento foi instalado em blocos ao acaso, com cinco tratamentos e quatro repetições, em pomar de plantas adultas de laranjeira-Pera enxertada em tangerina-Cleópatra. Os tratamentos consistiram em parcelas com uma linha de tubogotejador (T1, duas linhas de tubogotejadores (T2, quatro linhas de tubogotejadores (T3 por linha de plantio, microaspersão (T4 e sem irrigação (T5. Os tratamentos irrigados favoreceram a produção e o teor de ºBrix. Observou-se maior concentração de raízes na região do bulbo úmido no T1 em relação ao T2 e ao T3.

  2. Biodiversity and distribution of arbuscular mycorrhizal fungi in Araucaria angustifolia forest Biodiversidade e distribuição de fungos micorrízicos arbusculares em floresta de Araucaria angustifolia

    Directory of Open Access Journals (Sweden)

    Milene Moreira

    2007-08-01

    ção radicular, a densidade e a diversidade de esporos de FMA em duas florestas com araucária, distintas no processo sucessional, em duas épocas de amostragem: maio e outubro. As florestas, localizadas no Parque Estadual Turístico do Alto do Ribeira (PETAR, correspondem a 1 Floresta Ombrófila Mista nativa (FN, em estágio clímax, sem sinais de interferência antrópica, e a 2 floresta de araucária plantada em 1987 (R, submetida a pastoreio. Foram avaliados: colonização radicular, número de esporos e riqueza de espécies de FMA e calculados os índices de dominância de Simpson (Is e de diversidade de Shannon (H. A colonização radicular não diferiu entre as duas comunidades na primeira amostragem (maio. Na segunda amostragem (outubro, houve maior colonização radicular na floresta nativa do que na floresta plantada e a colonização radicular foi mais intensa em comparação com as coletas de maio. No total, foram encontradas 27 espécies de FMA, com maior número de esporos em FN em relação a R. A análise canônica discriminante (ACD indicou que o índice de diversidade de Shannon foi o atributo ecológico que mais contribuiu para distinguir os dois ecossistemas florestais, com altos valores de H para FN em relação a R. ACD mostrou ser importante ferramenta para o estudo dos atributos ecológicos.

  3. Distribución de los genotipos de fimA en cepas de Porphyromonas gingivalis aisladas de placas subgingivales y de sangre durante bacteriemias

    Directory of Open Access Journals (Sweden)

    Martine Bonnaure-Mallet

    2009-06-01

    Conclusión. En los aislamientos de sangre y de placa subgingival de pacientes con periodontitis el fimA más frecuente fue el tipo II; no fue posible correlacionar el tipo de fimA con la bacteriemia inducida por el alisado radicular. Los resultados de la secuenciación del gen fimA no concuerdan con los obtenidos por PCR.

  4. Efeito cariostático de restaurações adesivas em superfícies radiculares: estudo in vitro Caries inhibition around adhesive restorations in roots: in vitro study

    Directory of Open Access Journals (Sweden)

    Anderson Takeo HARA

    2000-06-01

    Full Text Available Materiais restauradores que liberam íons flúor e/ou promovem adesão à estrutura dental têm sido relacionados com a inibição do desenvolvimento de lesões de cárie adjacentes às restaurações. A hipótese testada neste estudo foi a de que o uso de resina composta/sistema adesivo tem efeito cariostático semelhante a um material adesivo que libera íons flúor - cimento de ionômero de vidro - sobre a superfície radicular adjacente às restaurações. Foram utilizadas 20 raízes de terceiros molares humanos extraídos, embutidas em resina de poliestireno e planificadas. Cavidades padronizadas foram preparadas e restauradas aleatoriamente com (a Chelon-Fil (Espe ou (b Z100/SingleBond (3M. Valores iniciais (KHNi de microdureza superficial Knoop da dentina foram obtidos a 100, 200 e 300 mim da margem oclusal das restaurações. Uma área de 2,0 mm ao redor da restauração foi delimitada e submetida à indução de cárie artificial. Obtiveram-se, então, os valores finais (KHNf de microdureza, nas mesmas condições e localizações da leitura inicial. As diferenças entre KHNi e KHNf foram consideradas para a análise estatística. As medianas de KHNi - KHNf nas distâncias de 100, 200 e 300 mim foram para (a: -3,8; -0,3; -1,0; e para (b: 3,3; 2,5; 1,7. O teste de Kruskal-Wallis não evidenciou diferença significativa entre as distâncias dentro de cada grupo. Às distâncias de 200 e 300 mim, não houve diferença significativa entre os materiais avaliados. À distância de 100 mim, (a diferiu significativamente de (b (p Dental materials that release fluoride have been shown to be effective in caries inhibition around restorations. Adhesive materials would also be effective in caries inhibition by sealing and protecting cavity margins from acidic demineralization. This in vitro study tested the hypothesis that composite restorations with a dentin adhesive system have a caries preventive effect similar to that of an adhesive material

  5. In vitro effect of 470 nm LED (Light Emitting Diode in keloid fibroblasts Efeito in vitro do LED (Light Emitting Diode de 470 nm em fibroblastos de quelóide

    Directory of Open Access Journals (Sweden)

    Silvilena Bonatti

    2011-02-01

    Full Text Available Purpose: To quantify keloid fibroblasts after irradiation with 470nm blue LED, in vitro. Methods: Fibroblasts from keloid and adjacent skin have been obtained from 6 patients. Cells have been cultivated and maintained in DMEM culture medium. In Petri dishes, they were irradiated with energy doses of 6J, 12J and 18J. After 24 h, counting was done by the average of the triplicates for each sample. Results: There were no significant differences in the number of irradiated keloid fibroblasts at the studied doses (p=0.261. In adjacent skin fibroblasts, differences were observed (p=0.025 concerning the doses of 18 J and 6 J (p=0.03. Conclusions: There was a reduction in the number of adjacent skin fibroblasts irradiated with 470nm blue LED at the energy dose of 18 J compared to the ones irradiated at the energy dose of 6 J. There were no changes in keloid fibroblasts counting at any of the doses applied, 24 h after irradiation.Objetivo: Quantificar fibroblastos de quelóide após irradiação com LED azul de 470nm, in vitro. Métodos: Foram obtidos fibroblastos de quelóide e pele adjacente, de seis pacientes. As células foram cultivadas e mantidas em meio de cultura DMEM. Em placas de Petri, receberam irradiação com doses de energia de 6J, 12J e 18J. Após 24 horas a contagem foi feita pela média da triplicata para cada amostra. Resultados: Não houve diferença na quantidade de fibroblastos de quelóide irradiados nas doses estudadas (p=0,261. Observou-se diferença nos fibroblastos de pele adjacente (p=0,025, com relação às doses de 18 J e 6 J (p=0,03. Conclusões: Houve redução dos fibroblastos de pele adjacente irradiados com LED azul de 470 nm na dose de energia de 18 J em relação à dose de 6 J. Não houve alteração na quantidade de fibroblastos de quelóide nas doses aplicadas após 24 horas da irradiação.

  6. Caso clínico del Departamento de Psiquiatría : trastorno de pánico

    Directory of Open Access Journals (Sweden)

    José Manuel Calvo Gómez

    1993-10-01

    Full Text Available Paciente de 37 años de edad, natural y procedente de Bogotá, unión libre, albañil, segundo de primaria, católico. Asistió a la consulta externa de la Unidad de Salud Mental del Centro Hospitalario San Juan de Dios por presentar un cuadro clínico de dos años de evolución caracterizado por episodios de ansiedad de inicio súbito, sin evento desencadenante aparente y acompañados de disnea, dolor precordial tipo picada no irradiado, temblor en las extremidades, desrealización, parestesias en los miembros superiores, diaforesis y sensación de muerte inminente. Estos síntomas aumentaban progresivamente de intensidad en cinco minutos y permanecían durante una hora, cediendo en forma espontanea. Durante ese lapso permanecía inquieto, intentando calmar de alguna forma los síntomas.

  7. Biological control of Phytophthora root rot of avocato with microorganisms grown in organic mulches Controle biológico da podridão radicular de Phytophthora no abacateiro utilizando substratos orgânicos colonizados

    Directory of Open Access Journals (Sweden)

    Jefferson L. da S. Costa

    2000-10-01

    Full Text Available Organic mulches colonized with microbial biocontrol agents, termed bioenhanced mulches, were tested for their ability to reduce Phytophthora root rot of avocado (Persea americana Mill.. Benomyl-resistant mutants of Gliocladium virens (KA 230-1 and Trichoderma harzianum (KA 159.2 isolated from suppressive soils and selected as efficient antagonists of P. cinnamomi were evaluated for their ability to colonize different mulches under controlled laboratory conditions. Sudangrass and a coarse yardwaste were found to be better substrates than a fine yardwaste, woodwaste or rice hulls for biocontrol agents propagules production. The most suitable conditions for colonization were an optimum temperature of 24°C, a moisture content of 20% for sudangrass and 30% for the coarse yardwaste, and a continuous light exposure during a 15-day incubation period. In the greenhouse, fresh sudangrass and a coarse yardwaste colonized with G. virens and used as a surface mulch proved to be the best combination for reducing the population of P. cinnamomi in 4-liter pots containing artificially-infested soil. Healthy avocado roots made up 31-37% of the roots in the G. virens-mulch combinations compared to 0% healthy in infested controls after two months.Compostos orgânicos colonizados com agentes de controle microbiológico, então denominados compostos bioativados, foram testados quanto a sua habilidadade controlar à podridão radicular de Phytophtora no abacateiro (Persea americana Mill. Mutantes de Gliocladium virens (KA 230-1 e Trichoderma harzianun (KA 159-2 resistentes a benomyl recuperados de solos supressivos e selecionados como eficientes antagonistas à P. cinnamoni foram avaliados quanto à sua capacidade de colonizar diversos compostos orgânicos em condições de laboratório. O Capim Sudão e um Composto de Jardim de alta granulação demonstraram quanto à sua capacidade de multiplicar propágulos de agentes de biocontrole, serem superiores à um

  8. A preliminary report on histological outcome of pulpotomy with endodontic biomaterials vs calcium hydroxide.

    Science.gov (United States)

    Nosrat, Ali; Peimani, Ali; Asgary, Saeed

    2013-11-01

    The purpose of the study was to evaluate human dental pulp response to pulpotomy with calcium hydroxide (CH), mineral trioxide aggregate (MTA), and calcium enriched mixture (CEM) cement. A total of nine erupted third molars were randomly assigned to each pulpotomy group. The same clinician performed full pulpotomies and coronal restorations. The patients were followed clinically for six months; the teeth were then extracted and prepared for histological assessments. The samples were blindly assessed by an independent observer for pulp vitality, pulp inflammation, and calcified bridge formation. All patients were free of clinical signs/symptoms of pulpal/periradicular diseases during the follow up period. In CH group, one tooth had necrotic radicular pulp; other two teeth in this group had vital uninflamed pulps with complete dentinal bridge formation. In CEM cement and MTA groups all teeth had vital uninflamed radicular pulps. A complete dentinal bridge was formed beneath CEM cement and MTA in all roots. Odontoblast-like cells were present beneath CEM cement and MTA in all samples. This study revealed that CEM cement and MTA were reliable endodontic biomaterials in full pulpotomy treatment. In contrast, the human dental pulp response to CH might be unpredictable.

  9. High-Force Versus Low-Force Lumbar Traction in Acute Lumbar Sciatica Due to Disc Herniation: A Preliminary Randomized Trial.

    Science.gov (United States)

    Isner-Horobeti, Marie-Eve; Dufour, Stéphane Pascal; Schaeffer, Michael; Sauleau, Erik; Vautravers, Philippe; Lecocq, Jehan; Dupeyron, Arnaud

    This study compared the effects of high-force versus low-force lumbar traction in the treatment of acute lumbar sciatica secondary to disc herniation. A randomized double blind trial was performed, and 17 subjects with acute lumbar sciatica secondary to disc herniation were assigned to high-force traction at 50% body weight (BW; LT50, n = 8) or low force traction at 10% BW (LT10, n = 9) for 10 sessions in 2 weeks. Radicular pain (visual analogue scale [VAS]), lumbo-pelvic-hip complex motion (finger-to-toe test), lumbar-spine mobility (Schöber-Macrae test), nerve root compression (straight-leg-raising test), disability (EIFEL score), drug consumption, and overall evaluation of each patient were measured at days 0, 7, 1, 4, and 28. Significant (P sciatica secondary to disc herniation who received 2 weeks of lumbar traction reported reduced radicular pain and functional impairment and improved well-being regardless of the traction force group to which they were assigned. The effects of the traction treatment were independent of the initial level of medication and appeared to be maintained at the 2-week follow-up. Copyright © 2016. Published by Elsevier Inc.

  10. Evaluation of Calretinin expression in Ameloblastoma and Non-Neoplastic Odontogenic Cysts - An immunohistochemical study.

    Science.gov (United States)

    D'Silva, Shaloom; Sumathi, M K; Balaji, N; Shetty, Nisha K N; Pramod, K M; Cheeramelil, Jacob

    2013-12-01

    Calretinin a 29-kDa calcium binding protein is expressed widely in normal human tissue and tumours including amelobastoma. The objective of this study was to determine calretinin expression in heamatoxylin and eosin diagnosed cases of ameloblastoma and non-neoplastic odontogenic cysts. The lining epithelium in 3 cases of radicular cysts, 5 cases of odontogenic keratocysts, 5 cases of dentigerous cysts and 11 cases of ameloblastomas were examined for expression of calretinin. No positive epithelial staining was observed in radicular and dentigerous cysts. In comparison, however 100% of cases of ameloblastomas and 40% of cases of odontogenic karatocysts showed positive calretinin expression. Calretinin may be a specific immunohistochemical marker for ameloblastoma. If there is any possible relation between calretinin expression and neural origin of the odontogenic epithelium and its neoplastic transformation and if calretinin could be used as an early marker to predict the tendency of neoplastic change of odontogenic epithelium could be answered through further researches. How to cite this article: D'Silva S, Sumathi MK, Balaji N, Shetty NK, Pramod KM, Cheeramelil J. Evaluation of Calretinin expression in Ameloblastoma and Non-Neoplastic Odontogenic Cysts - An immunohistochemical study. J Int Oral Health 2013; 5(6):42-8 .

  11. Spine imaging after lumbar disc replacement: pitfalls and current recommendations

    Directory of Open Access Journals (Sweden)

    Sandén Bengt

    2009-07-01

    Full Text Available Abstract Background Most lumbar artificial discs are still composed of stainless steel alloys, which prevents adequate postoperative diagnostic imaging of the operated region when using magnetic resonance imaging (MRI. Thus patients with postoperative radicular symptoms or claudication after stainless steel implants often require alternative diagnostic procedures. Methods Possible complications of lumbar total disc replacement (TDR are reviewed from the available literature and imaging recommendations given with regard to implant type. Two illustrative cases are presented in figures. Results Access-related complications, infections, implant wear, loosening or fracture, polyethylene inlay dislodgement, facet joint hypertrophy, central stenosis, and ankylosis of the operated segment can be visualised both in titanium and stainless steel implants, but require different imaging modalities due to magnetic artifacts in MRI. Conclusion Alternative radiographic procedures should be considered when evaluating patients following TDR. Postoperative complications following lumbar TDR including spinal stenosis causing radiculopathy and implant loosening can be visualised by myelography and radionucleotide techniques as an adjunct to plain film radiographs. Even in the presence of massive stainless steel TDR implants lumbar radicular stenosis and implant loosening can be visualised if myelography and radionuclide techniques are applied.

  12. Nonsurgical Clinical Management of Periapical Lesions Using Calcium Hydroxide-Iodoform-Silicon-Oil Paste

    Science.gov (United States)

    Al Khasawnah, Qusai; Hassan, Fathi; Malhan, Deeksha; Engelhardt, Markus; Daghma, Diaa Eldin S.; Obidat, Dima; Lips, Katrin S.; Heiss, Christian

    2018-01-01

    Background The study aim is to avoid tooth extraction by nonsurgical treatment of periapical lesion. It assesses healing progress in response to calcium hydroxide-iodoform-silicon oil paste (CHISP). Numeric Pain Rating Scale was used to validate the approach. Furthermore, CHISP was used to treat cystic lesions secondary to posttraumatic avulsion of permanent teeth. Materials and Methods Over 200 patients with radicular cysts were treated with CHISP through the root canal. Radiographs were used to verify lesion size and position, ensure correct delivery to the site, and monitor the progress of bone healing in the lesion area. Ten males and 10 females were randomly selected for statistical assessment. Results No severe pain, complications, or failure in cyst healing was reported. Complete healing was achieved in an average of 75 days. Furthermore, healing of radicular cyst secondary to posttraumatic tooth avulsion was successful. Conclusion CHISP indicated an antiseptic effect, which enhanced and shortened healing time of periapical lesions. The less invasive procedure avoids tooth extraction and reduces bone resorption. Cyst management with CHISP can remedy failed root canal treatments. The results show a bone regenerative capacity of CHISP suggested in first rapid phase and a second slow phase. PMID:29619378

  13. Orthokeratinized odontogenic cysts presenting as a periapical lesion: report of a case and literature review.

    Science.gov (United States)

    Silva Servato, João Paulo; Cardoso, Sérgio Vitorino; Parreira da Silva, Marcelo Caetano; Cordeiro, Mirna Scalon; Rogério de Faria, Paulo; Loyola, Adriano Mota

    2014-03-01

    Inflammatory cysts, granulomas, abscesses, and fibrous scars represent most periapical radiolucencies. However, other less common lesions, such as orthokeratinized odontogenic cysts (OOCs), can be found at this region, and they deserve to be discussed because the prognosis for an OOC is different from that expected for the ordinary inflammatory periapical diseases. An interesting case of OOC associated with a nonvital tooth in a 40-year-old woman is described. After a previous clinical diagnosis of a radicular cyst, the tooth was extracted, and the lesion was enucleated and submitted to microscopy examination. Because of the detection of an orthokeratinized epithelium lining, a diagnosis of OOC was concluded. After 2 years of periodic follow-up, no signs of recurrence were detected. The presence of keratin in radicular lesions must be carefully evaluated to eliminate the diagnosis of lesions with more aggressive behavior, such as an OOC or even a keratocystic odontogenic tumor. Hence, histopathologic examination is mandatory to confirm the type of lesion and to differentiate other pathologic conditions, therefore establishing patients' prognoses precisely. Copyright © 2014 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  14. Spine imaging after lumbar disc replacement: pitfalls and current recommendations

    OpenAIRE

    Robinson, Yohan; Sand?n, Bengt

    2009-01-01

    Abstract Background Most lumbar artificial discs are still composed of stainless steel alloys, which prevents adequate postoperative diagnostic imaging of the operated region when using magnetic resonance imaging (MRI). Thus patients with postoperative radicular symptoms or claudication after stainless steel implants often require alternative diagnostic procedures. Methods Possible complications of lumbar total disc replacement (TDR) are reviewed from the available literature and imaging reco...

  15. Progress of computer-aided detection/diagnosis (CAD in dentistryCAD in dentistry

    Directory of Open Access Journals (Sweden)

    Akitoshi Katsumata

    2014-08-01

    CAD is also useful in the detection and evaluation of dental and maxillofacial lesions. Identifying alveolar bone resorption due to periodontitis and radiolucent jaw lesions (such as radicular and dentigerous cysts are important goals for CAD. CAD can be applied not only to panoramic radiography but also to dental cone-beam computed tomography (CBCT images. Linking of CAD and teleradiology will be an important issue.

  16. Plantas daninhas como hospedeiras alternativas para Pratylenchus brachyurus

    Directory of Open Access Journals (Sweden)

    Guilherme Braga Pereira Braz

    Full Text Available RESUMO Uma das ações indiretas exercidas pelas plantas daninhas na interferência sob espécies cultivadas é o potencial de hospedar agentes causadores de enfermidades. O nematoide das lesões radiculares (Pratylenchus brachyurus vem causando uma série de danos em diversas culturas no Brasil. Para o manejo deste fitoparasita, o cultivo de diferentes espécies de crotalárias tem sido empregado. O objetivo deste trabalho foi avaliar a hospedabilidade de plantas daninhas para P. brachyurus, bem como o efeito de supressão de diferentes espécies de crotalária. Para isso, foi instalado um experimento em casa de vegetação no delineamento inteiramente casualizado em arranjo fatorial (2x17, com seis repetições. O primeiro fator consistiu na presença ou ausência da inoculação do nematoide. O segundo correspondeu a dezessete espécies vegetais, sendo onze plantas daninhas, quatro crotalárias (C. breviflora, C. juncea, C. ochroleuca e C spectabilis e duas variedades de soja, as quais serviram como testemunha sendo hospedeiras de P. brachyurus. A inoculação do nematoide das lesões radiculares não influenciou a altura de plantas e massa seca de parte aérea das diferentes espécies avaliadas. Portulaca oleracea, Amaranthus viridis e Sida rhombifolia foram as espécies com maior número de nematoides por sistema radicular, e apenas a S. rhombifolia apresentou comportamento semelhante a testemunha (variedade de soja BMX Potência RR®. Com relação ao número de nematoides por grama de raiz, os maiores valores foram observados para A. viridis, seguido por P. oleracea. Excluindo-se a C. juncea, todas as demais espécies de crotalária apresentaram-se como boas opções para o manejo em áreas infestadas com P. brachyurus.

  17. Multicolumn spinal cord stimulation for significant low back pain in failed back surgery syndrome: design of a national, multicentre, randomized, controlled health economics trial (ESTIMET Study).

    Science.gov (United States)

    Roulaud, M; Durand-Zaleski, I; Ingrand, P; Serrie, A; Diallo, B; Peruzzi, P; Hieu, P D; Voirin, J; Raoul, S; Page, P; Fontaine, D; Lantéri-Minet, M; Blond, S; Buisset, N; Cuny, E; Cadenne, M; Caire, F; Ranoux, D; Mertens, P; Naous, H; Simon, E; Emery, E; Gadan, B; Regis, J; Sol, J-C; Béraud, G; Debiais, F; Durand, G; Guetarni Ging, F; Prévost, A; Brandet, C; Monlezun, O; Delmotte, A; d'Houtaud, S; Bataille, B; Rigoard, P

    2015-03-01

    Many studies have demonstrated the efficacy of spinal cord stimulation (SCS) for chronic neuropathic radicular pain over recent decades, but despite global favourable outcomes in failed back surgery syndrome (FBSS) with leg pain, the back pain component remains poorly controlled by neurostimulation. Technological and scientific progress has led to the development of new SCS leads, comprising a multicolumn design and a greater number of contacts. The efficacy of multicolumn SCS lead configurations for the treatment of the back pain component of FBSS has recently been suggested by pilot studies. However, a randomized controlled trial must be conducted to confirm the efficacy of new generation multicolumn SCS. Évaluation médico-économique de la STImulation MEdullaire mulTi-colonnes (ESTIMET) is a multicentre, randomized study designed to compare the clinical efficacy and health economics aspects of mono- vs. multicolumn SCS lead programming in FBSS patients with radicular pain and significant back pain. FBSS patients with a radicular pain VAS score≥50mm, associated with a significant back pain component were recruited in 14 centres in France and implanted with multicolumn SCS. Before the lead implantation procedure, they were 1:1 randomized to monocolumn SCS (group 1) or multicolumn SCS (group 2). Programming was performed using only one column for group 1 and full use of the 3 columns for group 2. Outcome assessment was performed at baseline (pre-implantation), and 1, 3, 6 and 12months post-implantation. The primary outcome measure was a reduction of the severity of low back pain (bVAS reduction≥50%) at the 6-month visit. Additional outcome measures were changes in global pain, leg pain, paraesthesia coverage mapping, functional capacities, quality of life, neuropsychological aspects, patient satisfaction and healthcare resource consumption. Trial recruitment started in May 2012. As of September 2013, all 14 study centres have been initiated and 112

  18. Fósforo adicionado e fungos micorrízicos arbusculares no crescimento e nutrição mineral de limoeiro-cravo [Citrus limonia (L. OSBECK

    Directory of Open Access Journals (Sweden)

    R. Melloni

    2000-12-01

    Full Text Available Visando estudar a influência de fósforo adicionado e fungos micorrízicos arbusculares (FMAs no crescimento e nutrição mineral de limoeiro-cravo, instalou-se um experimento em casa de vegetação, com delineamento inteiramente casualizado, em esquema fatorial 6 x 3, sendo os fatores: (a seis doses de P (0, 50, 100, 150, 200 e 250 mg kg-1 de substrato e (b duas espécies de FMAs (Glomus etunicatum e G. intraradices e um controle sem FMA, com três repetições, em vasos de 1,7 dm³ de substrato. Após cinco meses do transplantio das mudas de limoeiro-cravo, avaliaram-se a altura, diâmetro do caule, matéria seca da parte aérea das plantas, nutrientes acumulados na parte aérea e percentagem de colonização radicular. No substrato, avaliaram-se o comprimento de micélio extra-radicular ativo (MEA e total (MET de FMAs. O porta-enxerto limoeiro-cravo apresentou alta dependência micorrízica na absorção dos nutrientes, quando inoculado com G. intraradices, o que resultou em maior altura, diâmetro de caule e matéria seca da parte aérea das plantas. Apenas essa espécie de FMA formou micorriza com o hospedeiro, com valores de colonização radicular inversamente proporcionais às doses de P adicionado. Houve aumento de MEA e MET com o aumento das doses de P, com alta correlação entre o primeiro e a absorção de nutrientes. Apesar de não colonizar o hospedeiro, a infestação com G. etunicatum resultou em valores de MEA e MET superiores aos do controle, indicando, talvez, capacidade saprofítica desse fungo para sobreviver no substrato.

  19. Compost de ave de corral como componente de sustratos

    Directory of Open Access Journals (Sweden)

    Lorena Alejandra Barbaro¹

    2011-07-01

    Full Text Available El sustrato para cultivo es un material que colocado en un contenedor permite el anclaje del sistema radicular, proporcionando agua y nutrientes. Entre los materiales empleados para formular sustratos se encuentran los compost. Entre ellos el compost de cama de ave de corral (CAC, elaborado en base al estiércol de aves mezclado con los materiales que forman su lecho. El objetivo de este trabajo fue evaluar dos compost de CAC como componente de sustrato, mediante el desarrollo de plantas de Coral (Salvia splendens. Uno de los compost contenía cama de stud (CAC+S durante su compostaje. Se formularon sustratos con diferentes proporciones de compost de CAC, compost de corteza de pino y pinocha, luego fueron analizados física y químicamente. A las plantas cultivadas en cada sustrato se midió la longitud y el diámetro del tallo, peso fresco y seco de la parte aérea y radicular. La densidad, porosidad y capacidad de retención de agua de todos los sustratos fueron aceptables. El pH de ambos compost de CAC fue mayor a 6,3, y los valores de las mezclas se encontraron dentro del rango aceptable. Todos los sustratos superaron 1 dS m-1 (1+5 v/v, principalmente los formulados con compost de CAC+S, cuyo material puro contenía altos niveles salinos. Al disminuir el porcentaje de CAC en las mezclas, diminuyó la concentración de cada nutriente. Las plantas cultivadas en el sustrato comercial y en las mezclas con 20% de CAC fueron las que lograron los mayores pesos aéreos y radiculares, diámetro y longitud del tallo. Por lo tanto, el compost de ave de corral podría ser una alternativa viable como componente de sustrato si se lo utiliza hasta un 20%.

  20. MANGABEIRA SEEDLING MINERAL NUTRITION CULTIVATED IN SUBSTRATES CONTAINING COCONUT FIBER AND FERTILIZED WITH PHOSPHORUS

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    Thiago Jardelino Dias

    2009-01-01

    Full Text Available O presente estudo teve como objetivo avaliar o efeito dos componentes dos substratos em diferentes misturas submetidos à adubação fosfatada sobre a composição mineral de mudas de mangabeira. Este experimento foi executado no Centro de Ciências Agrárias, UFPB, localizado no município de Areia-PB. O delineamento experimental foi em blocos casualizados, com 17 tratamentos, três repetições, e unidade experimental constando de quatro mudas. Os substratos testados foram acondicionados em sacos de polietileno preto, composto de fibra de coco, com valores variando de 0 a 40 %, esterco bovino de 0 a 25,5 %, terra vegetal de 25 a 70 %, 15 % de areia e superfosfato triplo, nas doses de 0,0; 5,5 e 11,0 g L-1. Foi avaliada a composição mineral dos sistemas radiculares e na parte aérea das mudas aos 150 dias após a germinação das sementes, para os teores de macronutrientes e cobre. Aadição de esterco bovino e de superfosfato triplo provocaram o incremento dos teores de macronutrientes no sistema radicular e na parte aérea das mudas de mangabeira, ao contrário do efeito da adição de terra vegetal e fibra de coco. O teor de cobre na parte aérea das mudas aumentou com o incremento da concentração de terra vegetal e da fibra de coco no substrato. Recomenda-se a utilização das concentrações de 24 % de esterco, 51 % de terra vegetal, 10 % de fibra de coco, 15 % de areia e 8 g dm- 3 de superfosfato triplo, para obtenção dos máximos teores estimados de macronutrientes e de cobre no sistema radicular e na parte aérea de mudas de mangabeira.

  1. Regeneración ósea guiada: nuevos avances en la terapéutica de los defectos óseos

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    Verónica Gómez Arcila

    Full Text Available Introducción: el procedimiento de regeneración ósea guiada ha demostrado ser una técnica exitosa para promover el llenado de defectos óseos presentes, así como para aumentar las dimensiones de rebordes alveolares atróficos previo a rehabilitación protésica convencional o implanto soportada. Objetivo: describir la utilización clínica de injerto aloplástico de b-fosfato tricálcico como material de relleno en la regeneración de defectos óseos alveolares. Presentación del caso: se presentó el caso de una paciente femenina de 57 años de edad quien acudió a la consulta odontológica por presencia de supuración en un diente anterosuperior, como consecuencia de un proceso infeccioso apical. Al examen clínico se observó resto radicular de incisivo central superior izquierdo e incisivo lateral superior izquierdo; radiográficamente se observó fractura radicular de incisivo central superior derecho. Posterior a la extracción de los restos radiculares, se empleó la técnica de regeneración ósea guiada, utilizando injerto aloplástico de b-fosfato tricálcico con una membrana de colágeno reabsorbible. Tres meses posteriores al tratamiento, se observó aumento en altura y anchura del reborde alveolar, con lo que se logró la conformidad estética y funcional deseada. Conclusión: el caso presentado revela resultados clínicos satisfactorios gracias a la neoformación de hueso observada y a la planificación adecuada del tratamiento con regeneración ósea guiada, por lo que el uso de injerto óseo, específicamente el injerto aloplástico b-fosfato tricálcico, en combinación con las membranas de barrera, se sugiere para el manejo de los defectos óseos alveolares.

  2. Efeito da cobertura viva com leguminosas herbáceas perenes na agregação de um argissolo

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    A. Perin

    2002-09-01

    Full Text Available O presente trabalho foi desenvolvido na área do Campo Experimental da Embrapa Agrobiologia, Seropédica (RJ, com o objetivo de avaliar a morfologia e a distribuição de raízes de algumas leguminosas herbáceas perenes; os efeitos da cobertura viva no teor de carbono orgânico, e a agregação de um Argissolo Vermelho-Amarelo distrófico, medida pela estabilidade dos agregados em água. O delineamento experimental adotado foi o de blocos casualizados, com três repetições. Os tratamentos consistiram de três diferentes espécies de leguminosas herbáceas perenes e um tratamento-controle sem cobertura viva (capinado. As leguminosas utilizadas foram amendoim forrageiro (Arachis pintoi, cudzu tropical(Pueraria phaseoloides e siratro (Macroptilium Atropurpureum. Para a estabilidade de agregados, as profundidades de amostragem foram 0-5 e 5-10 cm, enquanto, para a morfologia e distribuição radicular, as avaliações consistiram das profundidades 0-5, 5-10, 10-20 e 20-40 cm. As coberturas com as leguminosas amendoim forrageiro e cudzu tropical propiciaram os maiores valores percentuais na classe de agregados > 2,00 mm, em média 38 % superiores aos obtidos na área capinada. Os valores do diâmetro médio ponderado (DMP dos agregados no solo com cobertura de leguminosas foram superiores aos da área capinada para ambas as camadas, o que demonstra o efeito favorável das coberturas vivas na estabilização dos agregados do solo. A cobertura viva de amendoim forrageiro proporcionou incremento no teor de carbono orgânico no solo. Quanto aos atributos morfológicos das raízes, verificou-se que o amendoim forrageiro apresentou raio radicular intermediário entre as demais espécies e área e massa radicular maiores, o que auxiliou na interpretação do efeito positivo da cobertura viva com essa espécie na agregação do solo.

  3. SPINAL CORD- A CADAVERIC STUDY

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    Vijayamma K. N

    2018-01-01

    Full Text Available BACKGROUND Spinal cord is situated within the vertebral canal extending from the lower end of the medulla oblongata at the upper border of first cervical vertebra. In early foetal life, it extends throughout the length of the vertebral canal, and at the time of birth, it reaches the level of third lumbar vertebra. In adult, it ends at the lower border of first lumbar vertebra and thereafter continued as filum terminale, which gets attached to tip of coccyx. Spinal cord is covered by three protective membranes called spinal meninges, diameter, arachnoid and pia mater. The diameter and arachnoid mater extent up to second sacral vertebra and the pia mater forms filum terminale and extend at the tip of coccyx. MATERIALS AND METHODS Forty spinal cord cadaveric specimen were studied by dissection method after exposing the vertebral canal. The roots of spinal nerve were sectioned on both sides and the cord is released along with its coverings. The dura and arachnoid mater were incised longitudinally and the subarachnoid space, blood vessels, nerve roots, ligament denticulata, cervical and lumbar enlargements were observed. The blood vessels including radicular arteries were also studied photographed. RESULTS The spinal cord is a highly vascular structure situated within the vertebral canal, covered by diameter, arachnoid mater and pia mater. Spinal dura is thicker anteriorly than posteriorly. The pia mater forms linea splendens, which extend along the whole length of the cord in front of the anterior median fissure. The average length of the cord is 38 cm. The length and breadth of cervical enlargement was more compared to lumbar enlargement. The number of rootlets in both dorsal and ventral roots accounts more in cervical compared to other regions of the cord. The ligament denticulata is a thin transparent bands of pia mater attached on either sides of the cord between the dorsal and ventral roots of spinal nerves. The tooth like extensions are well

  4. Effects of the copper vapour laser radiation in the root canal wall dentine: in vitro experiment using scanning electron microscopy and stereoscopy; Efeitos da radiacao laser de vapor de cobre na parede de dentina de canais radiculares: estudo in vitro por meio de microscopia eletronica de varredura e microscopio estereoscopico

    Energy Technology Data Exchange (ETDEWEB)

    Silveira, Maria Claudia Garcia da

    2001-07-01

    Ten human uniradicular teeth had their crown removed along the cement-enamel junction and right away a proper chemical-surgical preparation of the radicular canals was done; the roots were longitudinally sectioned in order to allow the irradiation of the surfaces of the root canals wall dentine. The hemi-roots were separated in two groups: group I (control), with four hemi-roots, not irradiated; and group II, with 16 hemi-roots, subdivided in four sub-groups submitted to the following exposition time: 0,02 s; 0,05 s; 0,1 s and 0,5 s. A copper vapour laser was used with a 510,6 nm wavelength, total average power of 11 W in green and yellow emissions; average power of 6,5 W in green emission; pulse repetition rate of 16.000 Hz and pulse duration of 30 ns. The pulse energy (green line) is 0,4 mJ and the peak power 13,5 W. The laser cavity is unstable type (R{sub 1}=3.900 mm and R{sub 2}-250 mm). The focusing have focal length lens f{sub 1}=250 mm and f{sub 2}=150 mm. The beam quality is of the M{sup 2}=5. The results obtained by scanning electron microscopy analysis showed the appearance of a cavity in the region of the laser beam incidence in the edges of this cavity, dentin was melt and resolidified presenting also cracks due to heat diffusion. Based on these results, we concluded that the size of the cavity formed in the dentin is directly proportional to the rate of exposure and, the more laser emission in the same area, more damage in the root canals wall dentin occurs. More studies need to be done with different exposition's time in order to obtain a safety protocol that does not cause injury in dental and support tissue. (author)

  5. Síndrome de Fraser: relato de caso nas vias lacrimais

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    Silvia Helena Tavares Lorena

    2014-04-01

    Full Text Available A síndrome de Fraser é uma condição sistêmica caracterizada por criptoftalmo, sindactilia e anomalia da genitália, podendo se associar com alterações dos rins, do ouvido, do nariz, da laringe e do esqueleto. O criptoftalmo pode representar um achado isolado, representado por herança autossômica dominante, associado a outras anomalias congênitas, relatado como herança autossômica recessiva. Criança do sexo feminino, 9 meses, avaliada no ambulatório de vias lacrimais da Universidade Federal de São Paulo. Filha de pais consanguíneos. Ao exame, foram observados criptoftalmo total à esquerda, epífora em olho direito associada à secreção mucopurulenta, nariz em sela, implantação baixa das orelhas, malformação de conduto auditivo, aumento de grandes lábios e sindactilia de mãos e pés. A tomografia de crânio evidenciou braquicefalia ausência de septo pelúcido, proeminência dos ventrículos laterais, importante falha óssea na calota craniana, presença de afilamento do manto tecidual cerebral, fossa posterior pequena, desorganização do segmento anterior, afacia e descolamento total da retina.

  6. Materiales de obturación radicular utilizados en dientes deciduos

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    Trejo-A

    2014-01-01

    Full Text Available La caries y traumatismos son las principales causas de urgencias en odontología pediátrica. Estas afecciones pueden llegar a ejercer un daño irreversible en el tejido pulpar comprometiendo la permanencia de los órganos dentarios afectados. Para limitar el daño pulpar y evitar la extracción de piezas temporales se han diseñado distintas técnicas que van desde recubrimientos pulpares hasta un tratamiento más radical como la pulpectomía. Ésta última consiste en la extirpación del tejido pulpar, la limpieza y desinfección del sistema de conductos y la obturación de los mismos. Diversos autores han descrito las características ideales que debe presentar un material obturador de conductos de la dentición temporal, en los que se incluyen actividad bactericida y bacteriostática, adecuado sellado tridimensional, biocompatibilidad y reabsorción del material a una velocidad similar que las raíces. Desde hace largo tiempo se han desarrollado diversos materiales para cumplir con las exigencias que demanda la técnica. Dentro de los primeros materiales surgidos con éste propósito se encuentran el Óxido de Zinc con Eugenol, Hidróxido de Calcio y materiales a base de yodoformo, con el tiempo surgieron combinaciones de estos materiales para aumentar las ventajas y disminuir las desventajas. De éstos, las pastas yodoformadas con Hidróxido de Calcio son los que han tenido mayor aceptación.

  7. Asymmetry of the multifidus muscle in lumbar radicular nerve compression

    International Nuclear Information System (INIS)

    Farshad, Mazda; Gerber, Christian; Farshad-Amacker, Nadja A.; Dietrich, Tobias J.; Laufer-Molnar, Viviane; Min, Kan

    2014-01-01

    The multifidus muscle is the only paraspinal lumbar muscle that is innervated by a single nerve root. This study aimes to evaluate if the asymmetry of the multifidus muscle is related to the severity of compression of the nerve root or the duration of radiculopathy. MRI scans of 79 patients with symptomatic single level, unilateral, lumbar radiculopathy were reviewed for this retrospective case series with a nested case-control study. The cross-sectional area (CSA) of the multifidus muscle and the perpendicular distance of the multifidus to the lamina (MLD) were measured bilaterally by two radiologists and set into relation to the severity of nerve compression, duration of radiculopathy and probability of an indication for surgical decompression. In 67 recessal and 12 foraminal symptomatic nerve root compressions, neither the MLD ratio (severe 1.19 ± 0.55 vs less severe nerve compression: 1.12 ± 0.30, p = 0.664) nor the CSA ratio (severe 1 ± 0.16 vs less severe 0.98 ± 0.13, p = 0.577) nor the duration of symptoms significantly correlated with the degree of nerve compression. MR measurements of multifidus were not different in patients with (n = 20) and those without (n = 59) clinical muscle weakness in the extremity caused by nerve root compression. A MLD >1.5 was, however, associated with the probability of an indication for surgical decompression (OR 3, specificity 92 %, PPV 73 %). Asymmetry of the multifidus muscle correlates with neither the severity nor the duration of nerve root compression in the lumbar spine. Severe asymmetry with substantial multifidus atrophy seems associated with the probability of an indication of surgical decompression. (orig.)

  8. Asymmetry of the multifidus muscle in lumbar radicular nerve compression

    Energy Technology Data Exchange (ETDEWEB)

    Farshad, Mazda; Gerber, Christian; Farshad-Amacker, Nadja A.; Dietrich, Tobias J.; Laufer-Molnar, Viviane; Min, Kan [Balgrist University Hospital, University of Zuerich, Zuerich (Switzerland)

    2014-01-15

    The multifidus muscle is the only paraspinal lumbar muscle that is innervated by a single nerve root. This study aimes to evaluate if the asymmetry of the multifidus muscle is related to the severity of compression of the nerve root or the duration of radiculopathy. MRI scans of 79 patients with symptomatic single level, unilateral, lumbar radiculopathy were reviewed for this retrospective case series with a nested case-control study. The cross-sectional area (CSA) of the multifidus muscle and the perpendicular distance of the multifidus to the lamina (MLD) were measured bilaterally by two radiologists and set into relation to the severity of nerve compression, duration of radiculopathy and probability of an indication for surgical decompression. In 67 recessal and 12 foraminal symptomatic nerve root compressions, neither the MLD ratio (severe 1.19 ± 0.55 vs less severe nerve compression: 1.12 ± 0.30, p = 0.664) nor the CSA ratio (severe 1 ± 0.16 vs less severe 0.98 ± 0.13, p = 0.577) nor the duration of symptoms significantly correlated with the degree of nerve compression. MR measurements of multifidus were not different in patients with (n = 20) and those without (n = 59) clinical muscle weakness in the extremity caused by nerve root compression. A MLD >1.5 was, however, associated with the probability of an indication for surgical decompression (OR 3, specificity 92 %, PPV 73 %). Asymmetry of the multifidus muscle correlates with neither the severity nor the duration of nerve root compression in the lumbar spine. Severe asymmetry with substantial multifidus atrophy seems associated with the probability of an indication of surgical decompression. (orig.)

  9. Distribuição do sistema radicular da bananeira 'Prata-Anã' em duas freqüências de fertirrigação com uréia Distribution of the 'Prata Anã' root system in two urea fertirrigation frequencies

    Directory of Open Access Journals (Sweden)

    Ana Lúcia Borges

    2008-03-01

    Full Text Available O conhecimento da distribuição das raízes da bananeira subsidia informações para orientar a melhor localização de água e fertilizantes, resultando em incremento da produtividade do pomar. Em Latossolo Amarelo distrófico argissólico, em sistema de fileiras duplas (4 x 2 x 2 m, avaliou-se a distribuição do sistema radicular da bananeira 'Prata-Anã', antes da colheita do 2º ciclo, em duas freqüências de fertirrigação com uréia (400 kg de N/ha/ano, a cada 3 dias (F1 e a cada 15 dias (F2. As raízes foram coletadas em diferentes profundidades e distâncias, utilizando tubo metálico, sendo separadas do solo e quantificadas pelo programa GS Root. A maior freqüência de aplicação de N e de água (3 dias favoreceu a densidade de raízes, em comparação com a menor freqüência (15 dias. A maior concentração de raízes ocorreu nas camadas superficiais, até 0,30 m, e entre a planta e o microaspersor. Predominaram raízes de diâmetro entre 0,2 e >1,5 mm, tanto nas camadas superficiais (0 a 0,20 m de profundidade quanto entre a planta e o microaspersor.The knowledge of the distribution of roots in bananas generates information that guide the location of water and fertilizers, resulting an increase in crop yield in banana plantations. The 'Prata Anã' banana root distribution system, in loam clay sandy Yellow Latosol, before harvest of the second cycle, was evaluated in two urea fertirrigation frequencies (400 kg of N/ha/year every 3 days (F1 and 15 days (F2. Root samples were collected in different distances and depths with a metallic tube, separated from the soil and quantified using the GSRoot software. Higher urea fertirrigation frequency (3 days favored root density, in relation to the 15 days frequency. The amount of roots in the superficial layers (up to 0.30 m was greater, decreasing with the depth, as well as for the plant in the direction of the micro sprinkler, and less in the opposite direction. Roots of diameter

  10. Análisis cuantitativo de adaptación de pernos fibra de vidrio cilíndricos y cilíndrico-cónicos en diferentes anatomías de dientes unirradiculares (In Vitro). Pautas para diseñar nuevas técnicas.

    OpenAIRE

    Noroña, Diego Mariano

    2014-01-01

    Los dientes tratados endodónticamente poseen un riesgo mayor de fallas biomecánicas al compararlos con dientes vitales. El perno intrarradicular individualizado a la anatomía del conducto radicular es la mejor forma de hacer funcionar todo como un monobloque. Esta investigación in vitro analizó y cuantificó las áreas de adaptación entre los postes y las paredes del...

  11. Educative campaign about information on irradiated foods; Campana educativa sobre informacion de alimentos irradiados

    Energy Technology Data Exchange (ETDEWEB)

    Luna C, P C

    1991-07-15

    The irradiation of foods is accepted by international agencies (FAO, OMS) like a healthy and effective technology at the moment the irradiated foods are marketed easily in many countries, however in other countries exist several factors that affect the practical application of this process. In this work is planned about an educational campaign about the irradiation process directed to the consumers. (Author)

  12. Amenizante Orgânico e Eucalyptus grandis para Fitoestabilização de Solo Contaminado com Cobre

    Directory of Open Access Journals (Sweden)

    Rudinei De Marco

    2017-04-01

    Full Text Available RESUMO Este trabalho avaliou a utilização de turfa como amenizante e Eucalyptus grandis como técnica de fitoestabilização para remediar solo contaminado com cobre. O trabalho foi conduzido sob delineamento inteiramente casualizado em arranjo fatorial (2 × 6, sendo sem e com adição de turfa (200 mL L-1 de solo e seis doses de cobre adicionadas ao solo (0 mg kg-1, 60 mg kg-1, 120 mg kg-1, 180 mg kg-1, 240 mg kg-1, 300 mg kg-1 de solo, com seis repetições. Avaliaram-se a altura das mudas, o diâmetro do colo, a massa seca radicular e aérea, a área superficial específica, os teores e a quantidade acumulada de cobre no sistema radicular e na parte aérea e o índice de translocação. A adição de turfa possibilitou efeito amenizante da contaminação por cobre e favoreceu o crescimento das mudas. As mudas de Eucalyptus grandis apresentam elevado acúmulo de cobre nas raízes, o que permite indicá-la como promissora para fins de fitoestabilização de solos contaminados com cobre.

  13. Predictive Factors for Subjective Improvement in Lumbar Spinal Stenosis Patients with Nonsurgical Treatment: A 3-Year Prospective Cohort Study.

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    Ko Matsudaira

    Full Text Available To assess the predictive factors for subjective improvement with nonsurgical treatment in consecutive patients with lumbar spinal stenosis (LSS.Patients with LSS were enrolled from 17 medical centres in Japan. We followed up 274 patients (151 men; mean age, 71 ± 7.4 years for 3 years. A multivariable logistic regression model was used to assess the predictive factors for subjective symptom improvement with nonsurgical treatment.In 30% of patients, conservative treatment led to a subjective improvement in the symptoms; in 70% of patients, the symptoms remained unchanged, worsened, or required surgical treatment. The multivariable analysis of predictive factors for subjective improvement with nonsurgical treatment showed that the absence of cauda equina symptoms (only radicular symptoms had an odds ratio (OR of 3.31 (95% confidence interval [CI]: 1.50-7.31; absence of degenerative spondylolisthesis/scoliosis had an OR of 2.53 (95% CI: 1.13-5.65; <1-year duration of illness had an OR of 3.81 (95% CI: 1.46-9.98; and hypertension had an OR of 2.09 (95% CI: 0.92-4.78.The predictive factors for subjective symptom improvement with nonsurgical treatment in LSS patients were the presence of only radicular symptoms, absence of degenerative spondylolisthesis/scoliosis, and an illness duration of <1 year.

  14. Recurrent back pain after diskectomy: MRI findings MR of the postoperative lumbar spine

    International Nuclear Information System (INIS)

    Aparicio, Rocio; Eguren, Leonor Z.; Schinder, Humberto; Stur, Mariela

    2008-01-01

    Purpose: To show the morphological changes in postoperative lumbar spine. Material and methods: We reviewed 128 Magnetic Resonance Imaging (MRI) studies of lumbar spine. All patients complained of low back pain and had a previous lumbar surgery (1 month to 8 years). All the examinations include axial and sagittal Gadopentate-dimeglumine enhanced T1 weighted imaging. Results: Only 7,8% have the normal appearance of the postoperative lumbar spine. Epidural scar was found in 69% of examinations; of this group, 72% showed radicular involvement, and 28% had no radicular involvement. Recurrent disc herniation was found in 14,8% of exams, using gadopentate-dimeglumine to assist the differentiation from epidural fibrosis; infections like spondylodiscitis and abscess in 12,5%. Other findings included arachnoiditis, pseudomeningoceles and seromas. Conclusions: MRI is a useful method to study the postoperative lumbar spine, specially when enhanced with gadopentate-dimeglumine. Enhanced images can differentiate two of the major complication like epidural fibrosis, and recurrent disc herniation. Spondylodiscitis are important and frequent too. Although the findings of complications in our series in the postoperative lumbar spine represent 92,18 %, these not always explain the symptomatology. Therefore, the interrelation is important with the surgeon to determine which abnormalities are clinically significant. (authors) [es

  15. Cohort study of lumbar percutaneous chemonucleolysis using ethanol gel in sciatica refractory to conservative treatment

    International Nuclear Information System (INIS)

    Touraine, Sebastien; Tran, Olivia; Laredo, Jean-Denis; Damiano, Joel

    2015-01-01

    To investigate the efficacy of percutaneous chemonucleolysis using ethanol gel (PCEG) in alleviating radicular pain due to disc herniation after failure of conservative treatment. After failure of conservative treatment, PCEG was performed under fluoroscopic guidance in 42 patients with sciatica >4/10 on a Visual Analog Scale (VAS) for at least 6 weeks and consistent disc herniation on MRI or CT <3 months. The VAS pain score was determined at baseline, then after 1 and 3 months. We assessed the influence of patient-related factors (age, gender, pain duration) and disc herniation-related factors (level, migration pattern, disc herniation-related spinal stenosis) on outcome of PCEG. Mean pain duration was 6.7 months. Pain intensity decreased by 44 % and 62.6 % after 1 and 3 months, respectively, versus baseline (P = 0.007). A mild improvement was noted by the rheumatologist in 30/42 (71.4 %) and 36/42 (85.7 %) patients after 1 and 3 months, respectively, and in 31/42 (73.8 %) and 33/42 (78.6 %) patients by self-evaluation. Patients who failed PCEG were significantly older (49.8 vs. 37.3 years, P = 0.03). None of the other variables studied were significantly associated with pain relief. PCEG may significantly improve disc-related radicular pain refractory to conservative treatment. (orig.)

  16. Cohort study of lumbar percutaneous chemonucleolysis using ethanol gel in sciatica refractory to conservative treatment

    Energy Technology Data Exchange (ETDEWEB)

    Touraine, Sebastien; Tran, Olivia; Laredo, Jean-Denis [Hopital Lariboisiere, AP-HP, Radiologie Osteo-Articulaire, Paris Cedex 10 (France); Damiano, Joel [Hopital Lariboisiere, AP-HP, Rhumatologie, Centre Viggo-Petersen, Paris Cedex 10 (France)

    2015-11-15

    To investigate the efficacy of percutaneous chemonucleolysis using ethanol gel (PCEG) in alleviating radicular pain due to disc herniation after failure of conservative treatment. After failure of conservative treatment, PCEG was performed under fluoroscopic guidance in 42 patients with sciatica >4/10 on a Visual Analog Scale (VAS) for at least 6 weeks and consistent disc herniation on MRI or CT <3 months. The VAS pain score was determined at baseline, then after 1 and 3 months. We assessed the influence of patient-related factors (age, gender, pain duration) and disc herniation-related factors (level, migration pattern, disc herniation-related spinal stenosis) on outcome of PCEG. Mean pain duration was 6.7 months. Pain intensity decreased by 44 % and 62.6 % after 1 and 3 months, respectively, versus baseline (P = 0.007). A mild improvement was noted by the rheumatologist in 30/42 (71.4 %) and 36/42 (85.7 %) patients after 1 and 3 months, respectively, and in 31/42 (73.8 %) and 33/42 (78.6 %) patients by self-evaluation. Patients who failed PCEG were significantly older (49.8 vs. 37.3 years, P = 0.03). None of the other variables studied were significantly associated with pain relief. PCEG may significantly improve disc-related radicular pain refractory to conservative treatment. (orig.)

  17. A cumulative analysis of odontogenic cysts from major dental institutions of Bangalore city: A study of 252 cases.

    Science.gov (United States)

    Ramachandra, Prashanth; Maligi, Prathima; Raghuveer, Hp

    2011-01-01

    The objective of this study was to perform a cumulative analysis of odontogenic cysts obtained from the data of major dental institutions of Bangalore city, as well as to evaluate their distribution during a 5-year period and compare the results with other international studies. Data for the study were obtained from the reports of patients diagnosed with odontogenic cysts between 2005 and 2010 from different dental institutions of Bangalore. Case records of patients that fit the histological classification of the World Health Organization (WHO) (2005) were included in the study and the following variables were analyzed: age, gender, anatomic location, and histological type. In a total of 252 cyst specimens diagnosed, 79.76% were odontogenic cysts and 20.24% were nonodontogenic cysts. Among the odontogenic cysts most frequent lesions were radicular cysts (50.25%), followed by keratocysts (27.36%) and dentigerous cysts (22.39%). Our study provides a cumulative data of odontogenic cysts in the population of Bangalore city. The results of our study showed a similar frequency of odontogenic cysts as compared to other populations of the world, with radicular cyst being identified as the most frequent odontogenic cyst. Keratocyst was the second most common cyst followed by dentigerous cyst.

  18. MRI-detection rate and incidence of lumbar bleeding sources in 190 patients with non-aneurysmal SAH.

    Directory of Open Access Journals (Sweden)

    Sepide Kashefiolasl

    Full Text Available Up to 15% of all spontaneous subarachnoid hemorrhages (SAH have a non-aneurysmal SAH (NASAH. The evaluation of SAH patients with negative digital subtraction angiography (DSA is sometimes a diagnostic challenge. Our goal in this study was to reassess the yield of standard MR-imaging of the complete spinal axis to rule out spinal bleeding sources in patients with NASAH.We retrospectively analyzed the spinal MRI findings in 190 patients with spontaneous NASAH, containing perimesencephalic (PM and non-perimesencephalic (NPM SAH, diagnosed by computer tomography (CT and/or lumbar puncture (LP, and negative 2nd DSA.190 NASAH patients were included in the study, divided into PM-SAH (n = 87; 46% and NPM-SAH (n = 103; 54%. Overall, 23 (22% patients had a CT negative SAH, diagnosed by positive LP. MR-imaging of the spinal axis detected two patients with lumbar ependymoma (n = 2; 1,05%. Both patients complained of radicular sciatic pain. The detection rate raised up to 25%, if only patients with radicular sciatic pain received an MRI.Routine radiological investigation of the complete spinal axis in NASAH patients is expensive and can not be recommended for standard procedure. However, patients with clinical signs of low-back/sciatic pain should be worked up for a spinal pathology.

  19. Surgical management of giant lumbar disc herniation: analysis of 154 patients over a decade.

    Science.gov (United States)

    Akhaddar, A; Belfquih, H; Salami, M; Boucetta, M

    2014-10-01

    We describe a decade of our experience in the surgical management of patients with giant lumbar intervertebral disc herniation (GILID). This is a case series of patients operated for a GILID between 2000 and 2009. Among 1334 patients eligible for the present study: 154 patients presented with GILID (study group) and 1180 patients without GILID (control group). Clinical symptoms and preoperative imaging results were obtained from medical records. Complications and long-term results were assessed. This retrospective study documents the characteristic features between patients with and without GILID. The difference in the incidence of female patients was statistically significant between the study group and the control group as was the mean duration of symptoms, hyperalgic radicular pain, bilaterality of symptoms, preoperative motor deficit, central location of lumbar disc herniation (LDH), contained herniation and recurrence of LDH. GILIDs are a distinct entity: they are distinctly uncommon compared with smaller herniations, patients were statistically more likely to be hyperalgic with bilateral radicular pain and often associated with neurological deficits. The majority of patients do not display a cauda equina syndrome (CES). Low lumbar disc sites are mostly affected and disc fragments are more likely to be central-uncontained. The recurrence rate is lower for GILIDs. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  20. Nonsurgical Clinical Management of Periapical Lesions Using Calcium Hydroxide-Iodoform-Silicon-Oil Paste

    Directory of Open Access Journals (Sweden)

    Qusai Al Khasawnah

    2018-01-01

    Full Text Available Background. The study aim is to avoid tooth extraction by nonsurgical treatment of periapical lesion. It assesses healing progress in response to calcium hydroxide-iodoform-silicon oil paste (CHISP. Numeric Pain Rating Scale was used to validate the approach. Furthermore, CHISP was used to treat cystic lesions secondary to posttraumatic avulsion of permanent teeth. Materials and Methods. Over 200 patients with radicular cysts were treated with CHISP through the root canal. Radiographs were used to verify lesion size and position, ensure correct delivery to the site, and monitor the progress of bone healing in the lesion area. Ten males and 10 females were randomly selected for statistical assessment. Results. No severe pain, complications, or failure in cyst healing was reported. Complete healing was achieved in an average of 75 days. Furthermore, healing of radicular cyst secondary to posttraumatic tooth avulsion was successful. Conclusion. CHISP indicated an antiseptic effect, which enhanced and shortened healing time of periapical lesions. The less invasive procedure avoids tooth extraction and reduces bone resorption. Cyst management with CHISP can remedy failed root canal treatments. The results show a bone regenerative capacity of CHISP suggested in first rapid phase and a second slow phase.

  1. Characteristic findings on panoramic radiography and cone-beam CT to predict paresthesia after extraction of impacted third molar.

    Science.gov (United States)

    Harada, Nana; Beloor Vasudeva, Subash; Matsuda, Yukiko; Seki, Kenji; Kapila, Rishabh; Ishikawa, Noboru; Okano, Tomohiro; Sano, Tsukasa

    2015-01-01

    The purpose of this study was to compare findings on the relationship between impacted molar roots and the mandibular canal in panoramic and three-dimensional cone-beam CT (CBCT) images to identify those that indicated risk of postoperative paresthesia. The relationship between impacted molars and the mandibular canal was first classified using panoramic images. Only patients in whom the molar roots were either in contact with or superimposed on the canal were evaluated using CBCT. Of 466 patients examined using both panoramic and CBCT images, 280 underwent surgical extraction of an impacted molar, and 15 of these (5%) reported postoperative paresthesia. The spatial relationship between the impacted third molar root and the mandibular canal was determined by examining para-sagittal sections (lingual, buccal, inter-radicular, inferior, and combinations) obtained from the canal to the molar root and establishing the proximity of the canal to the molar root (in contact with or without loss of the cortical border and separate). The results revealed that darkening of the roots with interruption of the mandibular canal on panoramic radiographs and the inter-radicular position of the canal in CBCT images were characteristic findings indicative of risk of postoperative paresthesia. These results suggest that careful surgical intervention is required in patients with the above characteristics.

  2. Respiratory Epithelium Lined Cyst of the Maxilla: Differential Diagnosis

    Directory of Open Access Journals (Sweden)

    C. P. Martinelli-Kläy

    2017-01-01

    Full Text Available Maxillary cysts, including the cysts lined by respiratory epithelium, can present a diagnostic challenge. We report an unusual case of a maxillary cyst on an endodontically treated tooth #16, in which the cavity was totally lined by a respiratory epithelium. The patient, a 35-year-old male, presented with a generalized chronic periodontitis and complained of a pain in the tooth #16 region. A periodontal pocket extending to the root apices with pus coming out from the gingival was found. A combined endodontic periodontal was observed on a panoramic radiography. CBCT-scan revealed a well-circumscribed radiolucent lesion at the apices of the distobuccal root of the 16. A communication with the right maxillary sinus cavity and a maxillary and ethmoidal sinusitis were also observed. The lesion was removed and histological examination revealed a cyst lined exclusively by respiratory epithelium. Ciliated and rare mucous cells were also observed. The diagnosis could evoke a surgical ciliated cyst mimicking the radicular cyst but the patient has no previous history of trauma or surgery in the maxillofacial region. It could also be an unusual radicular cyst in which the stratified squamous epithelium was destroyed by inflammation and replaced by a respiratory epithelium of the maxillary sinus.

  3. A case report of spinal dural arteriovenous fistula: origins, determinants, and consequences of abnormal vascular malformations

    OpenAIRE

    Zakhary, Sherry M.; Hoehmann, Christopher L.; Cuoco, Joshua A.; Hitscherich, Kyle; Alam, Hamid; Torres, German

    2017-01-01

    A spinal dural arteriovenous fistula is an abnormally layered connection between radicular arteries and venous plexus of the spinal cord. This vascular condition is relatively rare with an incidence of 5–10 cases per million in the general population. Diagnosis of spinal dural arteriovenous fistula is differentiated by contrast-enhanced magnetic resonance angiography or structural magnetic resonance imaging, but a definitive diagnosis requires spinal angiography methods. Here, we report a cas...

  4. Management of endodontic-periodontic lesion of a maxillary lateral incisor with palatoradicular groove

    OpenAIRE

    Jayshree Ramakrishna Vishwas; Shoeb Yakub Shaikh; Varsha H. Tambe; Fareedi Mukram Ali; Mohammed Mustafa

    2014-01-01

    Presence of palatal radicular grooves are considered to be an important contributing factor to the development of localized periodontitis, as it favored the accumulation and proliferation of bacterial plaque deep into the periodontium. Pulp involvement could result due to the introduction of bacterial toxins through channels that existed between the root canal system and the groove. Early diagnosis, elimination of inflammation and correction of anatomic complications are the key to a favorabl...

  5. CREST Calcinosis Affecting the Lumbar and Cervical Spine and the Use of Minimally-Invasive Surgery

    OpenAIRE

    Faraj, Kassem; Perez-Cruet, Kristin; Perez-Cruet, Mick

    2017-01-01

    Calcinosis in CREST (calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia) syndrome can affect the spinal and paraspinal areas. We present the first case to our knowledge where a CREST syndrome patient required surgery for spinal calcinosis in both the cervical and lumbar areas.?A 66-year-old female with a history of CREST syndrome presented with right-sided lower extremity radicular pain. A computed tomography (CT) scan showed bilateral lumbar masses (5...

  6. Os Fungos no Funcionamento dos Ecossistemas Florestais

    OpenAIRE

    Santos-Silva, Celeste; Machado, Helena

    2011-01-01

    Os fungos no funcionamento dos ecossistemas Florestais: Papel dos fungos sapróbios na degradação da matériaorgânica Papel dos fungos micorrízicos na nutrição e saúde das árvores Diversidade fúngica e estabilidade das florestas Relações entre os fungos e os animais Doenças radiculares associadas ao declínio do montado de sobro e azinho

  7. Moléculas orgánicas obtenidas en simulaciones experimentales del medio interestelar.

    Science.gov (United States)

    Muñoz-Caro, Guillermo Manuel

    Las nubes moleculares son regiones de formación de estrellas, con temperaturas cinéticas entre 10-50 K y densidades de 103-106 átomos cm-3. Su materia está formada por gas y polvo interestelar. Estas partículas de polvo están cubiertas por una fina capa de hielo, de unos 0.01 μm, que contiene H2O y a menudo CO, CO2, CH3OH y NH3. El hielo es presumiblemente irradiado por fotones ultravioleta y rayos cósmicos en las zonas poco profundas de las nubes moleculares y las regiones circunestelares. En un sistema de vacío, P ˜ 10-7 mbar, simulamos la deposición de hielo a partir de 10 K y la irradiación ultravioleta por medio de una lámpara de descarga de hidrógeno activada con microondas. La evolución del hielo se observa por medio de un espectrómetro infrarrojo. De este modo es posible determinar la composición del hielo observado en el medio interestelar y predecir la presencia de moléculas aún no detectadas en el espacio, que han sido producto del procesamiento del hielo en nuestros experimentos. También es posible calentar el sistema hasta temperatura ambiente para sublimar el hielo depositado. Cuando el hielo ha sido previamente irradiado, se observa un residuo compuesto por moléculas orgánicas complejas, algunas prebióticas, como varios ácidos carboxílicos, aminas, amidas, ésteres y en menor proporción moléculas heterocíclicas y aminoácidos. Algunas de estas moléculas podrían detectarse en estado gaseoso por medio de observaciones milimétricas y de radio. También podrían estar presentes en el polvo cometario, cuyo análisis químico está planeado por las misiones Stardust y Rosetta. Mientras tanto, nuestro grupo está llevando a cabo el análisis de partículas de polvo interplanetario (IDPs), algunas de las cuales pueden ser de origen cometario. Al igual que ocurre con los productos obtenidos por irradiación del hielo en nuestros experimentos, algunas IDPs son ricas en material orgánico que contiene oxígeno.

  8. In Vitro antileishmanial properties of neutron-irradiated meglumine antimoniate

    Directory of Open Access Journals (Sweden)

    Samanta Etel Treiger Borborema

    2005-10-01

    Full Text Available Pentavalent antimony, as meglumine antimoniate (Glucantime® or sodium stibogluconate (Pentostam® , is the main treatment for leishmaniasis, a complex of diseases caused by the protozoan Leishmania, and an endemic and neglected threat in Brazil. Despite over half a century of clinical use, their mechanism of action, toxicity and pharmacokinetic data remain unknown. The analytical methods for determination of antimony in biological systems remain complex and have low sensitivity. Radiotracer studies have a potential in pharmaceutical development. The aim of this study was to obtain a radiotracer for antimony, with suitable physical and biological properties. Meglumine antimoniate was neutron irradiated inside the IEA-R1 nuclear reactor, producing two radioisotopes 122Sb and 124Sb, with high radionuclidic purity and good specific activity. This compound showed the same antileishmanial activity as the native compound. The use of the radiotracers, easily created by neutron irradiation, could be an interesting tool to solve important questions in antimonial pharmacology.Os antimoniais pentavalentes, como o antimoniato de meglumina (Glucantime® ou estibogluconato de sódio (Pentostam® , são o principal tratamento para a leishmaniose, um complexo de doenças causadas pelo protozoário parasita Leishmania, uma doença endêmica e negligenciada no Brasil. Apesar do seu uso clínico por mais de meio século, seu mecanismo de ação, toxicidade e dados de farmacocinética permanecem desconhecidos. Os métodos analíticos para determinação de antimônio em sistemas biológicos são complexos e apresentam baixa sensibilidade. Estudos utilizando radiotraçadores têm papel potencial no desenvolvimento farmacológico. O objetivo deste estudo foi desenvolver um radiotraçador de antimônio, com propriedades físicas e biológicas adequadas. O antimoniato de meglumina foi irradiado por nêutrons no reator nuclear IEA-R1, produzindo dois radioisótopos: 122

  9. Aplicabilidade da técnica de cell block na avaliação citológica do conteúdo de lesões de aspecto cístico dos maxilares Applicability of cell block technique for cytological evaluation of biological material collected from maxillary cystic lesions

    Directory of Open Access Journals (Sweden)

    Grasieli de Oliveira Ramos

    2012-04-01

    Full Text Available INTRODUÇÃO: A busca por novos métodos que auxiliem e simplifiquem de maneira eficaz o diagnóstico de lesões maxilares, cistos e tumores, objetiva beneficiar os pacientes e facilitar a atuação dos profissionais da área de diagnóstico bucal. Além dos dados clínicos, radiográficos e histopatológicos classicamente utilizados nos protocolos de investigação das lesões maxilares, a adaptação de técnicas já consagradas na medicina pode ser de grande valia. A técnica de cell block se propõe a auxiliar nesse processo, pois consiste na análise citológica de materiais, efusões e líquidos, coletados de lesões passíveis de punção aspirativa, como cistos e tumores císticos dos maxilares. OBJETIVO: Demonstrar a aplicabilidade da técnica de cell block para avaliação citológica de material biológico coletado a partir de lesões císticas dos maxilares. RESULTADOS: Das 20 lesões, das quais o conteúdo foi processado pela técnica, a avaliação citológica de cinco casos de tumores odontogênicos ceratocísticos (TOCs demonstrou a presença predominante de ceratina, sempre com áreas de paraceratina. Nos demais casos (cinco cistos dentígeros, cinco cistos radiculares e cinco cistos residuais foi observada a presença de hemácias, células inflamatórias e fendas de cristais de colesterol. CONCLUSÃO: A avaliação citológica, a partir da técnica de cell block, foi útil no estabelecimento do diagnóstico diferencial entre TOC e demais lesões estudadas, cistos radicular, residual e dentígero.INTRODUCTION: The search for new methods that aid and optimize the diagnosis of cystic and tumoral maxillary lesions aims to benefit both patients and professionals from oral diagnosis. In addition to clinical, radiographic and histological findings traditionally used in research protocol for maxillary lesions, the adaptation of widely used medical techniques may be very helpful. The cell block procedure streamlines this process

  10. Influência da colonização micorrízica arbuscular sobre a nutrição do quiabeiro Influence of arbuscular mycorrhiza fungi on the nutrition of okra plant

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    Ricardo Luís Louro Berbara

    1999-09-01

    Full Text Available Foram estudados em casa de vegetação alguns parâmetros de crescimento em plantas de quiabo (Abelmoschus esculentus (L. Moench cv. Piranema colonizadas por dois grupos de fungos micorrízicos arbusculares, com o objetivo de determinar a influência dos inóculos na nutrição e morfologia radicular do quiabeiro. Um grupo continha apenas esporos de Acaulospora longula (A enquanto o outro, esporos de oito espécies: Glomus occultum, Glomus aggregatum, Glomus microcarpum, Acaulospora longula, Acaulospora morrowae, Sclerocystis coremioides, Sclerocystis sinuosa, Scutellospora pellucida. As plantas foram submetidas a três níveis de P (0, 10 e 60 kg ha-1 de P2O5 e coletadas em três diferentes idades (22, 32 e 47 dias, com quatro repetições para cada tratamento. Foi determinado o acúmulo de N, P, K, e Mg na raiz e parte aérea, bem como o influxo médio desses elementos e a área radicular. Os resultados indicaram, além da resposta positiva do quiabeiro ao P, uma maior eficiência da inoculação com mistura de espécies apesar de o influxo médio, determinado aos 47 dias, apresentar maiores valores para o tratamento com A. longula.An experiment was carried out in greenhouse to determine the influence of inoculation of two groups of arbuscular mycorrhizae on the nutrition and radicular morphology of the okra plant (Abelmoschus esculentus (L. Moench cv. Piranema. One group had only Acaulospora longula spores and the other a spore mixture of eight species: Glomus occultum, Glomus aggregatum, Glomus microcarpum, Acaulospora longula, Acaulospora morrowae, Sclerocystis coremioides, Sclerocystis sinuosa, Scutellospora pellucida. The experiment was held in greenhouse conditions with three levels of P (0, 10 and 60 kg ha-1 of P2O5, three samplings dates (22, 32 and 47 days and four replications. The accumulation of N, P, K, Ca and Mg in roots and shoots, root area and their influx ratio were determined. The results made evident that the mixture of

  11. Qualidade de mudas clonais de Eucalyptus urophylla x E. grandis em função do substrato Quality of Eucalyptus urophylla x E. grandis cuttings as a function of substrate

    Directory of Open Access Journals (Sweden)

    Richardson B. G. da Silva

    2012-01-01

    Full Text Available Considerando a crescente demanda por mudas florestais e a escassez de matérias-primas dos substratos utilizados para o crescimento das plantas, faz-se necessário avaliar novos componentes e formulações que assegurem a qualidade das mudas. Nesse experimento foram estudados o desenvolvimento e a qualidade de mudas clonais de Eucalyptus urophylla x E. grandis, provenientes de miniestacas, em função de nove composições de substrato produzidos a partir de vermiculita granulometria fina, casca de arroz carbonizada e fibra de coco em tubetes de 50 mL. Foram avaliados as propriedades físicas dos substratos, o desenvolvimento morfológico e a qualidade do sistema radicular das mudas, aos 90 dias após o estaqueamento. Os substratos com maior porosidade total promovem maior qualidade do sistema radicular o que, consequentemente, resulta em mudas com maior diâmetro, massa seca aérea e radicular e Índice de Qualidade de Dickson. Outros valores para as características físicas dos substratos, diferentes dos citados na literatura, também podem ser considerados adequados.Considering the increasing demand for seedlings of plants for aforestation and the scarcity of raw materials for the substrates used for plant growth, it is necessary to evaluate new components and formulations that ensure the quality of seedlings. In this experiment the development and quality of production of Eucalyptus urophylla x E. grandis seedlings was studied through vegetative propagation, as a function of nine compositions of substrate, produced from fine-grained vermiculite, carbonized rice chaff and coconut fiber in hard plastic tubes of 50 mL as containers. The physical properties of substrates and morphological development and the quality of the root system of seedlings were evaluated at 90 days after staking. The substrates with higher total porosity promotes better quality of the root system, which consequently results in cuttings with larger diameter, shoot and

  12. Mal posición de tornillos pediculares lumbares que producen radiculalgia mecánica postoperatoria con estimulación neurofisiológica intraoperatoria normal: el valor de la estimulación neurofisiológica del trayecto del tornillo

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    Vicente García González

    2013-12-01

    Full Text Available OBJETIVO: Valorar una exploración neurofisiológica que identifique estos casos intraoperatoriamente y evite la mal posición de tornillos pediculares. MÉTODOS: En 293 pacientes intervenidos de escoliosis por vía posterior con tornillos pediculares y técnica "free hand", se implantaron 6.739 tornillos. De estos, ocho pacientes (2,7%, con edad promedio de 24 años, presentaron dolor radicular lumbar postoperatorio. En la TC postoperatoria se encontraron 10 tornillos lumbares (2L1-3L2-4L3-1L4 con prominencia mínima en la parte inferior del pedículo. Se evaluaron los umbrales de EMG del tornillo y del trayecto. RESULTADOS: En cirugía inicial no se detectaron anomalías en la palpación del trayecto, ni en el control radioscópico, ni alteraciones neurofisiológicas en la estimulación neurofisiológica con t-EMG. Todos presentaron dolor radicular en bipedestación y sedestación que remitía con reposo en cama. Los tornillos fueron retirados quirúrgicamente a los 37 días en promedio (R:4-182. En esta cirugía se repitió la monitorización neurofisiológica y volvió a mostrar valores normales (> 11mA. Tras la retirada de los tornillos, se realizó estimulación del trayecto que mostró en la parte media, umbrales por debajo de los valores normales (3,9-10,7mA. Tras un seguimiento promedio de 4,4 años (R:2,6-6.8, cinco pacientes referían tener molestias radiculares ocasionales y uno tenía déficit motor mínimo en la extremidad afectada. CONCLUSIONES: Se presenta un tipo de mal posicionamiento de tornillo pedicular lumbar que produce radiculalgia en bipedestación-sedestación y que no es detectado con monitorización convencional. La estimulación neurofisiológica del trayecto en la zona media, tras retirada del tornillo pedicular, produjo umbrales bajos de estimulación. Se recomienda estimulación sistemática del trayecto antes de la inserción del tornillo pedicular lumbar.

  13. Study of polarization colors in the connective tissue wall of odontogenic cysts using picrosirius red stain

    Directory of Open Access Journals (Sweden)

    Anusha Shetty

    2015-01-01

    Full Text Available Background: Lesions of odontogenic origin comprise the heterogeneous group ranging from hamartomatous proliferations, cysts to benign and malignant tumors. Interplay between the epithelium and connective tissue can be assumed to play a significant role in the pathogenesis of odontogenic cysts. Aims and Objectives: A study was taken up to show the role of picrosirius red (PSR stain to demonstrate the fibers and also to assess the difference in the nature of the fibers (different color patterns and to find out the role of it, if any in the pathogenesis and biological behavior of the commonly occurring odontogenic cysts. Materials and Methods: Collagen fibers of 30 cases of odontogenic cysts (10 radicular cysts, 10 odontogenic keratocysts (OKC′s, and 10 dentigerous cysts were studied by staining the sections with PSR stain and examining them under bright field and polarizing microscope. Results: Sixty-seven percentage of the thin collagen fibers and 55% of the thick fibers in radicular cyst showed green-yellow birefringence. Fifty-seven percentage of the thin collagen fibers and 15% of the thick fibers in OKC showed green-yellow birefringence. Eighty-two percentage of the thin collagen fibers and 66% of the thick fibers in dentigerous cysts showed green-yellow birefringence. Rest of the fibers showed orange-red birefringence. Statistical analysis with one-way ANOVA was significant with a P < 0.01 only for thick fibers. Moreover, comparison of polarization colors of thick fibers of odontogenic cysts with duration of the lesion gave statistically significant results. Conclusion: The observations in the present study with respect to color profiles of the collagen fibers in the three commonly occurring odontogenic cysts possibly explain the biological behavior of the lesions. The predominant orange-red birefringence in OKC′s in comparison to radicular and dentigerous cysts suggests that OKC′s exhibit well organized and tightly packed fibers. This

  14. Hérnia discal lombar Lumbar disc herniation

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    Luis Roberto Vialle

    2010-01-01

    Full Text Available A hérnia discal lombar é o diagnóstico mais comum dentre as alterações degenerativas da coluna lombar (acomete 2 a 3% da população e a principal causa de cirurgia de coluna na população adulta. O quadro clínico típico inclui lombalgia inicial, seguida de lombociatalgia e, finalmente, de dor ciática pura. A história natural da hérnia de disco é de resolução rápida dos sintomas (quatro a seis semanas. O tratamento inicial deve ser conservador, com manejo medicamentoso e fisioterápico, podendo ser acompanhado ou não por bloqueios percutâneos radiculares. O tratamento cirúrgico está indicado na falha do controle da dor, déficit motor maior que grau 3, dor radicular associada à estenose óssea foraminal ou síndrome de cauda equina, sendo esta última uma emergência médica. Uma técnica cirúrgica refinada, com remoção do fragmento extruso, e preservação do ligamento amarelo, resolve a sintomatologia da ciática e reduz a possibilidade de recidiva em longo prazo.Lumbar disc herniation is the most common diagnosis amongst the degenerative conditions of the lumbar spine (affecting around 2 to 3% of the population, and is the principal cause of spine surgery in the adult population. The typical clinical picture includes initial lumbalgia, followed by progressive sciatica. The natural history of disc herniation is one of rapid resolution of the symptoms (from 4-6 weeks. Early treatment should be conservative, with pain management and physiotherapy, sometimes associated with selective nerve root block. Surgery should be considered if pain management is unsuccessful, if there is a motor deficit (strength grade 3 or less, where there is radicular pain associated with foraminal stenosis, or in the presence of cauda equina syndrome, the latter representing a medical emergency. A refined surgical technique, with removal of the extruded fragment and preservation of the ligamentum flavum, resolves the sciatic symptoms and reduces

  15. Atrição dental em Didelphis albiventris e D. marsupialis (Marsupialia, Didelphimorphia, Didelphidae do Sul do Brasil Dental wear in Didelphis albiventris and D. marsupialis (Marsupialia, Didelphimorphia, Didelphidae from southern Brazil

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    Marília da Silva Aguiar

    2004-08-01

    Full Text Available Pesquisou-se o nível de desgaste dental (atrição e/ou abrasão em 168 espécimes de Didelphis albiventris e D. marsupialis (gambás do sul do Brasil. O desgaste foi muito importante, com elevada freqüência de dentina terciária e de exposição da câmara coronária e/ou do canal radicular, devido à associação de fraturas e desgaste, pois as fraturas predispõem ao desgaste e este favorece as fraturas. O grau de desgaste aumentou com a idade dos animais. A ordem crescente na freqüência de dentina terciária nos dentes caudais aos caninos foi: primeiro, segundo e terceiro molares, terceiro e segundo pré-molar, e quarto molar. Diferentemente de outros onívoros, em Didelphis o desgaste dentário parece mais relacionado às fraturas devidas aos alimentos (seguida de atrição/abrasão do que ao contato entre os dentes. Ao contrário da literatura, os molares tribosfênicos não parecem "ideais" para tal dieta onívora, o que é evidenciado pela elevada freqüência de desgaste, fraturas e exposição da câmara coronária ou do canal radicular.This work deals with the study of dental wear down (atrittion and/or abrasion in 168 specimens of Didelphis albiventris and D. marsupialis from Southern Brazil. Wear down was very important, with high frequency of tertiary dentine and exposition of the pulp cavity/radicular canal, due to the association of fractures and wear down. Fractures predispose wear down which, on the other side, favors fractures. The degree of attrition increased with age. The order of growing frequency of tertiary dentin in poscanines was: first, second and third molars, third and second premolars, and finally fourth molar. Differently from others omnivorous in Didelphis tooth wear down seems rather related to fractures due to food (followed by attrition than to teeth contact. Contrary to literature, tribosphenic molars seems not to be "ideals" for such omnivorous diet, as is evident from the high frequency of wear down

  16. Granuloma periapical: tratamiento convencional. Reporte de un caso

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    Natalia Patricia Harris Ortega; Fernando Javier Guzman Lopez; Antonio Díaz Caballero

    2014-01-01

    Title: Periapical granuloma: conventional treatment. Case reportLos Granulomas radiculares son lesiones periapicales crónicas, consideradas secuelas directas de procesos infecciosos resultantes de la necrosis pulpar, extendiéndose hacia la región perirradicular. Los granulomas se pueden presentar por fallas en los tejidos duros, resultantes de caries, fracturas y procedimientos quirúrgicos. Se realizó tratamiento de endodoncia convencional con preparación invertida a paciente de 15 años con d...

  17. Demographic distribution of odontogenic cysts in Isfahan (Iran over a 23-year period (1988-2010

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    Negin Khosravi

    2013-01-01

    Conclusion: Odontogenic cysts are fairly frequent jaw lesions (21.62%, of which radicular cyst was the most common cyst. The four most common lesions constituted a sum of 96.45% of the total. In general, the prevalence rates in our study are similar to the studies from other geographic parts of the world but with a lower incidence of inflammatory cysts, higher prevalence of dentigerous cysts and residual cysts and also mandibular predominance for residual cysts.

  18. Decompression Device Using a Stainless Steel Tube and Wire for Treatment of Odontogenic Cystic Lesions: A Technical Report.

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    Jung, Eun-Joo; Baek, Jin-A; Leem, Dae-Ho

    2014-11-01

    Decompression is considered an effective treatment for odontogenic cystic lesions in the jaw. A variety of decompression devices are successfully used for the treatment of keratocystic odontogenic tumors, radicular cysts, dentigerous cysts, and ameloblastoma. The purpose of these devices is to keep an opening between the cystic lesion and the oral environment during treatment. The aim of this report is to describe an effective decompression tube using a stainless steel tube and wire for treatment of jaw cystic lesions.

  19. Rare combination of cervical spine tumours

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    Jerome, Terrencejose; Sankaran, Balu; Varghese, Mathew

    2009-01-01

    Osteoid osteoma, osteoblastoma, and haemangioma should be included in the differential diagnosis of any young patient with pain in the back or the neck, painful scoliosis, or radicular or referred-type pain into the lower limb or the shoulder. Osteoid osteoma and haemangioma may occur in the same cervical spine and both have a significant importance in the prognosis, management and possible complications. Early diagnosis with a bone scan and computed tomography scan, leading to prompt treatme...

  20. Effects of different peracetic acid formulations on post space radicular dentin.

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    Belizário, Lauriê Garcia; Kuga, Milton Carlos; Castro-Núñez, Gabriela Mariana; Escalante-Otárola, Wilfredo Gustavo; Só, Marcus Vinicius Reis; Pereira, Jefferson Ricardo

    2018-01-05

    The optimal irrigating solution with antimicrobial and dentin cleansing properties for post space preparation for fiber posts is unclear. Peracetic acid is one option but is available in various chemical formulations that require evaluation. The purpose of this in vitro study was to evaluate dentin surface cleanliness based on the presence of a smear layer and the number of open dentin tubules. It also investigates the chemical composition of residues after canal irrigation with a 1% peracetic acid solution (PA) at low or high concentration of hydrogen peroxide during the preparation of intracanal fiber posts. After filling the root canals of 40 mandibular incisors, a rotary instrument was used for intracanal preparation to place fiber posts. The teeth were divided into 4 groups (n=10) according to the post space irrigation protocol as follows: CG (control): distilled water; NA (NaOCl): 2.5% sodium hypochlorite; LH: PA with low concentration of hydrogen peroxide; and HH: PA with high concentrations of hydrogen peroxide. After irrigation, the teeth were sectioned, and the intracanal dentin surface was subjected to analysis using energy dispersive spectroscopy to evaluate chemical composition and to scanning electron microscopy (×500) to evaluate the presence of the smear layer. The number of open dentin tubules was measured by scanning electron microscopy analysis (×2000) using photo-editing software. ANOVA and the Tukey test (α=.05) were used to evaluate the data, except for the presence of a smear layer, for which the Kruskal-Wallis and Dunn tests were used (α=.05). The highest concentrations of oxygen in the dentin residues were detected in LH and HH (P.05). NA had a higher concentration of chlorine (P.05), except for HH, which also had a larger number of open dentin tubules than CG and NA (P<.05). PA 1% with a low concentration of hydrogen peroxide yielded a lower amount of smear layer and a larger number of open dentin tubules in the dentin of the post space when compared with PA 1% with a high concentration of hydrogen peroxide, despite maintaining a similar oxygen concentration in these dentin residues. Copyright © 2017 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.