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Sample records for class iii malocclusion

  1. Early cephalometric characteristics in Class III malocclusion

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    Vanessa Costa Farias

    2012-04-01

    Full Text Available OBJECTIVE: Early identification of craniofacial morphological characteristics allows orthopedic segmented interventions to attenuate dentoskeletal discrepancies, which may be partially disguised by natural dental compensation. To investigate the morphological characteristics of Brazilian children with Class III malocclusion, in stages I and II of cervical vertebrae maturation and compare them with the characteristics of Class I control patients. METHODS: Pre-orthodontic treatment records of 20 patients with Class III malocclusion and 20 control Class I patients, matched by the same skeletal maturity index and sex, were selected. The craniofacial structures and their relationships were divided into different categories for analysis. Angular and linear measures were adopted from the analyses previously described by Downs, Jarabak, Jacobson and McNamara. The differences found between the groups of Class III patients and Class I control group, both subdivided according to the stage of cervical vertebrae maturation (I or II, were assessed by analysis of variance (ANOVA, complemented by Bonferroni's multiple mean comparisons test. RESULTS: The analysis of variance showed statistically significant differences in the different studied groups, between the mean values found for some angular (SNA, SNB, ANB and linear variables (Co - Gn, N - Perp Pog, Go - Me, Wits, S - Go, Ar - Go. CONCLUSION: Assessed children displaying Class III malocclusion show normal anterior base of skull and maxilla, and anterior positioning of the mandible partially related to increased posterior facial height with consequent mandibular counterclockwise rotation.

  2. Orthodontics-surgical combination therapy for Class III skeletal malocclusion

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    Ravi, M. S.; Nillan K Shetty; Prasad, Rajendra B.

    2012-01-01

    The correction of skeletal Class III malocclusion with severe mandibular prognathism in an adult individual requires surgical and Othodontic combination therapy. The inter disciplinary approach is the treatment of choice in most of the skeletal malocclusions. A case report of an adult individual with Class III malocclusion, having mandibular excess in sagittal and vertical plane and treated with orthodontics,, bilateral sagittal split osteotomy and Le - Forte I osteotomy for the correction of...

  3. Orthodontics-surgical combination therapy for Class III skeletal malocclusion

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    M S Ravi

    2012-01-01

    Full Text Available The correction of skeletal Class III malocclusion with severe mandibular prognathism in an adult individual requires surgical and Othodontic combination therapy. The inter disciplinary approach is the treatment of choice in most of the skeletal malocclusions. A case report of an adult individual with Class III malocclusion, having mandibular excess in sagittal and vertical plane and treated with orthodontics,, bilateral sagittal split osteotomy and Le - Forte I osteotomy for the correction of skeletal, dental and soft tissue discrepancies is herewith presented. The surgical-orthodontic combination therapy has resulted in near-normal skeletal, dental and soft tissue relationship, with marked improvement in the facial esthetics in turn, has helped the patient to improve the self-confidence level.

  4. Conservative treatment of Angle Class III malocclusion with anterior crossbite

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    João Hélder Ferreira de Aguiar

    2015-08-01

    Full Text Available Angle Class III malocclusion is characterized by anteroposterior dental discrepancy which might be associated or not with skeletal changes. Class III molar relationship is associated with vertical or lingually tipped mandibular incisors and a usually concave profile. These characteristics seriously affect facial esthetics and most frequently are the reason why patients seek orthodontic treatment. This case was presented to the committee of the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as part of the requisites to become a BBO Diplomate.

  5. Orthodontic-surgical treatment of the skeletal class III malocclusion: A case report

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    Stojanović Ljiljana S.; Mileusnić Ivan; Mileusnić Budimir; Čutović Tatjana

    2013-01-01

    Background. Class III malocclusions are considered to be ones of the most difficult problems to treat. Their causes are multifactorial and include genetic and/or environmental factors. Class III malocclusions are generally classified into 2 categories: skeletal and dental. The diagnosis is important due to the different treatment approaches. Generally a dental class III can be treated with orthodontics alone, while a true skeletal class III requires a combi...

  6. Early treatment of Class III malocclusion with a tandem traction bow appliance

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    Sneha Basaveshwar Valgadde

    2016-01-01

    Full Text Available Since Class III malocclusion is progressive in nature, the facial growth of Class III malocclusion worsens with age. Class III malocclusion is associated with a deviation in the sagittal relationship of the maxilla and the mandible, characterized by a deficient maxilla, retrognathic mandible, or a combination of both. The early orthopedic treatment of Class III malocclusions, at the end of primary dentition or the beginning of mixed dentition, prior to growth spurt, allows the accomplishment of successful results, providing facial balance, modifying the maxillofacial growth and development, and in many instances, preventing a future surgical treatment by increasing the stability. Many treatment approaches can be found in the literature regarding orthopedic and orthodontic treatment of Class III malocclusion, including intra- and extra-oral appliances. The major problem with extraoral anchorage has been of patient compliance due to its physical appearance. The case report presents an intraoral modified tandem appliance for maxillary protraction that has been used clinically to achieve successful results without relying much on patient co-operation.

  7. Inheritance of craniofacial features in Colombian families with class III malocclusion

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    L Otero

    2010-02-01

    Full Text Available L Otero, L Quintero, D Champsaur, E SimancaPontificia Universidad Javeriana, Bogotá, ColombiaIntroduction: The inheritance of class III malocclusion has been well documented, but the inheritance of craniofacial structures in Colombian families with this malocclusion has been not yet reported.Patients and methods: The study sample of 25 families comprised 186 untreated orthodontic individuals from 8 to 60 years old. Pedigrees were drawn using Cyrillic software. Complete family histories for each proband were ascertained and the affection status of relatives was confirmed by lateral cephalograms and facial and dental photographs. Analysis of variance and odds ratio test for each parameter was performed to estimate inheritance from parents to offspring and to determine similar phenotypic features in relatives.Results: The analysis of the pedigrees suggests autosomal dominant inheritance. The craniofacial characteristics that showed more resemblance between parents and offspring were middle facial height, shorter anterior cranial base and mandibular prognathism. In contrast the protrusion of upper lip and maxillary retrusion were the phenotypic features that contributed to class III in the majority of families.Conclusion: Knowledge of the inheritance of craniofacial phenotypes in class III malocclusion will enable the design of new therapies to treat this malocclusion.Keywords: inheritance, craniofacial, phenotype, class III malocclusion

  8. Management of skeletal Class III malocclusion with face mask therapy and comprehensive orthodontic treatment

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    Kirthika Muthukumar

    2016-01-01

    Full Text Available Orthopedic correction of skeletal Class III malocclusion in a growing patient is crucial as it can circumvent future surgical procedures. Further, as surgery is done only at a later stage, early treatment helps to avoid the detrimental effects produced by the facial disfigurement on the patient's social life. This case report describes the treatment of a child aged 9 years 6 months who had a skeletal Class III malocclusion. The treatment plan involved the use of a reverse pull headgear (facemask and multibracket appliance therapy resulting in successful correction of the malocclusion. The treatment results were highly satisfactory resulting in improved facial esthetics, a skeletal Class I with a Dental Class I molar and canine relationship, an ideal overjet and overbite. Thus, dentoalveolar camouflage, if done in properly selected cases, alleviates the need for surgical intervention. The patient is being monitored until the end of growth to ensure the stability of treatment results.

  9. Self-esteem in adolescents with Angle Class I, II and III malocclusion in a Peruvian sample

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    Karla Florián-Vargas

    2016-04-01

    Full Text Available ABSTRACT Objective: To compare self-esteem scores in 12 to 16-year-old adolescents with different Angle malocclusion types in a Peruvian sample. Material and Methods: A cross-sectional study was conducted in a sample of 276 adolescents (159, 52 and 65 with Angle Class I, II and III malocclusions, respectively from Trujillo, Peru. Participants were asked to complete the Rosenberg Self-Esteem Scale (RSES and were also clinically examined, so as to have Angle malocclusion classification determined. Analysis of covariance (ANCOVA was used to compare RSES scores among adolescents with Class I, II and III malocclusions, with participants' demographic factors being controlled. Results: Mean RSES scores for adolescents with Class I, II and III malocclusions were 20.47 ± 3.96, 21.96 ± 3.27 and 21.26 ± 4.81, respectively. The ANCOVA test showed that adolescents with Class II malocclusion had a significantly higher RSES score than those with Class I malocclusion, but there were no differences between other malocclusion groups. Supplemental analysis suggested that only those with Class II, Division 2 malocclusion might have greater self-esteem when compared to adolescents with Class I malocclusion. Conclusion: This study shows that, in general, self-esteem did not vary according to adolescents' malocclusion in the sample studied. Surprisingly, only adolescents with Class II malocclusion, particularly Class II, Division 2, reported better self-esteem than those with Class I malocclusion. A more detailed analysis assessing the impact of anterior occlusal features should be conducted.

  10. Treatment in borderline class III malocclusion: orthodontic camouflage (extraction) versus orthognathic surgery

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    A-Bakr M Rabie; Wong, Ricky W.K; Min, G.U.

    2008-01-01

    AIMS: To investigate the differences in morphological characteristics of borderline class III patients who had undergone camouflage orthodontic treatment or orthognathic surgery, and to compare the treatment effects between these two modalities. MATERIALS AND METHODS: Cephalograms of 25 patients (13 orthodontic, 12 surgical) with class III malocclusion were analyzed. All had a pretreatment ANB angle greater than -5 masculine. RESULTS: Using discriminant analysis, only Holdaway angle was selec...

  11. Orthodontic-surgical treatment of the skeletal class III malocclusion: A case report

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    Stojanović Ljiljana S.

    2013-01-01

    Full Text Available Background. Class III malocclusions are considered to be ones of the most difficult problems to treat. Their causes are multifactorial and include genetic and/or environmental factors. Class III malocclusions are generally classified into 2 categories: skeletal and dental. The diagnosis is important due to the different treatment approaches. Generally a dental class III can be treated with orthodontics alone, while a true skeletal class III requires a combination of orthodontics and surgery. Case report. We presented a female patient with skeletal Class III malocclusion. The treatment was complete with positive overbite and acceptable occlusion using a combination of fixed orthodontic appliance treatment as well as the surgical operation. The patient was happy with her new appearance and function. Conclusion. Class III discrepancy should be diagnosed and classified according to its etiology and treated with appropriate surgery, including, if necessary, not only mandibular, but also maxillary surgery, in order to achieve a normal facial appearance. In any case, as the field of orthodontics continues to develop technologically and philosophically, we can expect that advances in diagnosis and treatment planning are imminent and inevitable.

  12. Orthodontic camouflage of skeletal Class III malocclusion with miniplate: a case report

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    Farret, Marcel Marchiori; Farret, Milton M. Benitez; Farret, Alessandro Marchiori

    2016-01-01

    ABSTRACT Introduction: Skeletal Class III malocclusion is often referred for orthodontic treatment combined with orthognathic surgery. However, with the aid of miniplates, some moderate discrepancies become feasible to be treated without surgery. Objective: To report the case of a 24-year-old man with severe skeletal Angle Class III malocclusion with anterior crossbite and a consequent concave facial profile. Methods: The patient refused to undergo orthognathic surgery; therefore, orthodontic camouflage treatment with the aid of miniplates placed on the mandibular arch was proposed. Results: After 18 months of treatment, a Class I molar and canine relationship was achieved, while anterior crossbite was corrected by retraction of mandibular teeth. The consequent decrease in lower lip fullness and increased exposure of maxillary incisors at smiling resulted in a remarkable improvement of patient's facial profile, in addition to an esthetically pleasing smile, respectively. One year later, follow-up revealed good stability of results. PMID:27653269

  13. Combined orthognathic surgery and prosthetic treatment for class III skeletal malocclusion

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    Luka Dias Wellar

    2013-01-01

    Full Text Available This clinical report discusses the case of a partially edentulous patient with class III skeletal malocclusion, suffering from poor masticatory function and esthetic appearance caused by severe anteroposterior discrepancy between the dental arches and loss of occlusal vertical dimension. The functional and esthetic rehabilitation was performed with orthognathic surgery followed by prosthetic treatment using an overlay removable partial denture. At the end of the treatment, the patient was successfully rehabilitated, both functionally and esthetically, through reestablishment of the occlusal vertical dimension and correction of the anteroposterior discrepancy between the dental arches. The overlay removable partial denture is a simple and time-efficient alternative in the treatment of partially edentulous patients with class III skeletal malocclusions and small anteroposterior discrepancies between dental arches. Additionally, an esthetic smile and functional rehabilitation of the stomatognathic system was satisfactorily obtained with orthognathic surgery followed by prosthetic treatment.

  14. Compensatory treatment of Angle Class III malocclusion with anterior open bite and mandibular asymmetry

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    Marcio Costa Sobral

    2012-06-01

    Full Text Available Class III malocclusion is characterized by anterior posterior dental disharmony, either with or without skeletal discrepancies. Facial esthetics may be compromised to a greater or lesser degree, depending on the magnitude of the discrepancy, and is one of the main factors motivating individuals to seek orthodontic treatment. In adult patients, therapy may be performed by means of dental compensation, in simpler cases, or in more severe situations, by means of association between Orthodontics and Orthognathic Surgery. The present article is a clinical case report of a patient with a vertical facial pattern, Angle Class III malocclusion, with open bite and important facial asymmetry. The patient was treated in a compensatory manner with extractions, using extra-oral appliances on the mandibular arch with high pull, applying the principles of the Tweed-Merrifield technique. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as part of the requisites for becoming a BBO Diplomate.

  15. Correction of class III malocclusion using modified tandem appliance-two case reports

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    J Jeevarathan

    2013-01-01

    Full Text Available Skeletal discrepancies in growing children can have great physical and psychological impact on their appearance. These deformities require orthopedic correction at an appropriate age to avoid future extensive management. Managing a midfacial deficiency or true mandibular prognathism is perhaps the most challenging situation for the clinician. Many orthopedic appliances like chin cup, facemask, and so on have been advocated to correct class III malocclusion. The major problems with these appliances are physical appearance, skin irritation from the anchorage pads and hence, less patient compliance. We present management of class III malocclusion in two children with modified tandem appliance (MTA, which is an intraoral appliance, with no extraoral anchorage, and has better patient compliance and cooperation.

  16. Correction of class III malocclusion using modified tandem appliance-two case reports.

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    Jeevarathan, J; Koora, Kiran; Sudhakar, V; Muthu, M S; Prabhu, Rathna V

    2013-01-01

    Skeletal discrepancies in growing children can have great physical and psychological impact on their appearance. These deformities require orthopedic correction at an appropriate age to avoid future extensive management. Managing a midfacial deficiency or true mandibular prognathism is perhaps the most challenging situation for the clinician. Many orthopedic appliances like chin cup, facemask, and so on have been advocated to correct class III malocclusion. The major problems with these appliances are physical appearance, skin irritation from the anchorage pads and hence, less patient compliance. We present management of class III malocclusion in two children with modified tandem appliance (MTA), which is an intraoral appliance, with no extraoral anchorage, and has better patient compliance and cooperation.

  17. Compensatory treatment of Angle Class III malocclusion with anterior open bite and mandibular asymmetry

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    Marcio Costa Sobral

    2012-01-01

    Class III malocclusion is characterized by anterior posterior dental disharmony, either with or without skeletal discrepancies. Facial esthetics may be compromised to a greater or lesser degree, depending on the magnitude of the discrepancy, and is one of the main factors motivating individuals to seek orthodontic treatment. In adult patients, therapy may be performed by means of dental compensation, in simpler cases, or in more severe situations, by means of association between Orthodontics ...

  18. Surgical-orthodontic treatment of Class III malocclusion with agenesis of lateral incisor and unerupted canine

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    Bruno Boaventura Vieira; Ana Carolina Meng Sanguino; Marilia Rodrigues Moreira; Elizabeth Norie Morizono; Mírian Aiko Nakane Matsumoto

    2013-01-01

    INTRODUCTION: Orthodontic-surgical treatment was performed in patient with skeletal Class III malocclusion due to exceeding mandibular growth. Patient also presented upper and lower dental protrusion, overjet of -3.0 mm, overbite of -1.0 mm, congenital absence of tooth #22, teeth #13 and supernumerary impaction, tooth #12 with conoid shape and partly erupted in supraversion, prolonged retention of tooth #53, tendency to vertical growth of the face and facial asymmetry. The discrepancy on the ...

  19. Modifications of the marginal paradentium to a case of Angle Class III/1 malocclusion.

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    Dascălu, Ionela Teodora; Tuculină, Mihaela Jana; Răescu, Mihaela; Popescu, Sanda Mihaela; Corega, Claudia; Vaida, Ligia; Bold, Adriana

    2013-01-01

    Angle Class III malocclusions are not so frequently met but they raise big problems of treatment. The analyzed case represents a 14-year-old patient that came to the dental consulting room with an Angle Class III malocclusion determined by the excess of the somatotropic pituitary hormone and a gingival hyperplasia more emphasized at the level of inferior frontal teeth. The patient followed a fixed appliance treatment, the straight-wire technique. All along the treatment and after it, the hyperplasia and the gingival inflammation not only maintained but they even got worse. Thus, an improper hygiene associated with a severe Angle Class III malocclusion maintains and aggravates the gingivitis. The histological and immunohistochemical study of the gingiva revealed important epithelial modifications that led to an epithelial hypertrophy with a tendency toward acanthosis and to severe epithelial erosions. An inflammatory chronic process (rich in lymphocytes, plasma cells and macrophages full of angiogenesis vessels) and an intense reaction of the fibroblastic cells appeared in the gingival corium. PMID:24322040

  20. Transparent aligners: An invisible approach to correct mild skeletal class III malocclusion.

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    Yezdani, A Arif

    2015-04-01

    This case report highlights the treatment of a mild skeletal class III malocclusion with an invisible thermoplastic retainer. A 15-year-old female patient presented with a mild skeletal class III malocclusion with a retrognathic maxilla, orthognathic mandible, a low mandibular plane angle with Angle's class III malocclusion with maxillary lateral incisors in anterior cross-bite with crowding of maxillary anteriors, imbricated and rotated mandibular incisors and deep bite. Accurate upper and lower impressions and a bite registration were taken with polyvinyl siloxane rubber base impression material. This was then sent to the lab for the processing of a series of ClearPath aligners. The ClearPath virtual set-up sent from the lab provided the treatment plan and interproximal reduction estimation complete with posttreatment results. This enabled the clinician to actively participate in the treatment plan and provide the necessary suggestions. The ClearPath three-dimensional aligner was found to have effectively corrected the anterior cross-bite and crowding of the maxillary anteriors.

  1. Transparent aligners: An invisible approach to correct mild skeletal class III malocclusion

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    A Arif Yezdani

    2015-01-01

    Full Text Available This case report highlights the treatment of a mild skeletal class III malocclusion with an invisible thermoplastic retainer. A 15-year-old female patient presented with a mild skeletal class III malocclusion with a retrognathic maxilla, orthognathic mandible, a low mandibular plane angle with Angle′s class III malocclusion with maxillary lateral incisors in anterior cross-bite with crowding of maxillary anteriors, imbricated and rotated mandibular incisors and deep bite. Accurate upper and lower impressions and a bite registration were taken with polyvinyl siloxane rubber base impression material. This was then sent to the lab for the processing of a series of ClearPath aligners. The ClearPath virtual set-up sent from the lab provided the treatment plan and interproximal reduction estimation complete with posttreatment results. This enabled the clinician to actively participate in the treatment plan and provide the necessary suggestions. The ClearPath three-dimensional aligner was found to have effectively corrected the anterior cross-bite and crowding of the maxillary anteriors.

  2. [The craniofacial architecture of class III malocclusion using the Coben analysis].

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    Vallée-Cussac, V

    1991-01-01

    In this study, longitudinal tracings of dental and skeletal Class III malocclusion group are compared to tracings of COBEN analysis standard values. Cephalometric measurements and surimpositions illustrate the dynamic variations of Class III cranio-facial architecture for two age ranges: 8 years +/- 1 year and 16 years +/- 1 year. The Class III pathology for children 8 years +/- 1 year aged is characterized by alterations of tracings sizes and position with excessive cranio-facial components length and rotation of cranial base into a more vertical position. A growth rate deficiency in length with a variable individual adaptation is showed for cranial structures except the mandibule after growth at the age of 16 years +/- 1 year.

  3. [Effect of extraoral facemask appliance in 48 cases of malocclusion and dentofacial deformity in class III].

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    Zhang, X; Su, X

    1993-10-01

    Malocclusion and dentofacial deformity in class III is always characterized by maxillary skeletal retrusion and/or mandibular protrusion. It affects function and facial esthetics. An orthopedic mask appliance with class III extraoral traction made by the authors was applied in 48 cases from Aug. 1985 to Oct. 1991. The study population included 5 patients with deciduous dentition, 30 with permanent dentition, and 13 with mixed dentition. The second deciduous molars or permanent first molars are a class III relationship. These exhibited bilateral crossbites and negative overjet greater than 5 mm severe arch length discrepancies existed in both arches, maxillary skeletal retrusion and/or mandibular protrusion. The results of these 48 cases were very satisfactory. The relationship between maxillary and mandibular second deciduous molar or permanent first molar all showed centric occlusal position. Dentofacial orthopedics therapy is one of the most important treatments of malocclusion and dentofacial deformity. The choice of therapy and orthodontic force must follow the age and endurance of the patient. Also, exercise of the tongue muscle must be considered.

  4. Surgical-orthodontic treatment of Class III malocclusion with agenesis of lateral incisor and unerupted canine

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    Bruno Boaventura Vieira

    2013-06-01

    Full Text Available INTRODUCTION: Orthodontic-surgical treatment was performed in patient with skeletal Class III malocclusion due to exceeding mandibular growth. Patient also presented upper and lower dental protrusion, overjet of -3.0 mm, overbite of -1.0 mm, congenital absence of tooth #22, teeth #13 and supernumerary impaction, tooth #12 with conoid shape and partly erupted in supraversion, prolonged retention of tooth #53, tendency to vertical growth of the face and facial asymmetry. The discrepancy on the upper arch was -2.0 mm and -5.0 mm on the lower arch. METHODS: The pre-surgical orthodontic treatment was performed with extractions of the teeth #35 and #45. On the upper arch, teeth #53, #12 and supernumerary were extracted to accomplish the traction of the impacted canine. The spaces of the lower extractions were closed with mesialization of posterior segment. After aligning and leveling the teeth, extractions spaces closure and correct positioning of teeth on the bone bases, the correct intercuspation of the dental arch, with molars and canines in Angle's Class I, coincident midline, normal overjet and overbite and ideal torques, were evaluated through study models. The patient was submitted to orthognathic surgery and then the post-surgical orthodontic treatment was finished. RESULTS: The Class III malocclusion was treated establishing occlusal and facial normal standards.

  5. Diagnosis and conservative treatment of skeletal Class III malocclusion with anterior crossbite and asymmetric maxillary crowding.

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    Tseng, Linda L Y; Chang, Chris H; Roberts, W Eugene

    2016-04-01

    A man, aged 28 years 9 months, came for an orthodontic consultation for a skeletal Class III malocclusion (ANB angle, -3°) with a modest asymmetric Class II and Class III molar relationship, complicated by an anterior crossbite, a deepbite, and 12 mm of asymmetric maxillary crowding. Despite the severity of the malocclusion (Discrepancy Index, 37), the patient desired noninvasive camouflage treatment. The 3-Ring diagnosis showed that treatment without extractions or orthognathic surgery was a viable approach. Arch length analysis indicated that differential interproximal enamel reduction could resolve the crowding and midline discrepancy, but a miniscrew in the infrazygomatic crest was needed to retract the right buccal segment. The patient accepted the complex, staged treatment plan with the understanding that it would require about 3.5 years. Fixed appliance treatment with passive self-ligating brackets, early light short elastics, bite turbos, interproximal enamel reduction, and infrazygomatic crest retraction opened the vertical dimension of the occlusion, improved the ANB angle by 2°, and achieved excellent alignment, as evidenced by a Cast Radiograph Evaluation score of 28 and a Pink and White dental esthetic score of 3. PMID:27021460

  6. Treatment of Class III malocclusion in a young adult patient: a case report.

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    Kiran, B H Jyothi; Kumar, Prashanth; Ravi, S; Shivalinga, B M; Bhagyalaxmi; Pradeep; Kudagi, Vishal

    2012-01-01

    This article describes the treatment of a young adult male with a concave profile, skeletal class III malocclusion because of a prognathic mandible and proclined upper incisors. The therapy included stages: 1. Pre-surgical orthodontics involving leveling and aligning of upper and lower arches, protraction of lower molars and retraction of upper incisors; 2. Surgical phase involving BSSO with mandibular setback and 3. Post-surgical orthodontics for finishing and detailing. The treatment lasted 23 months and improved facial esthetics significantly The treatment resulted in a functional occlusion with a lack of lateral cuspid guidance that could be accepted considering the difficulty of the case. Over jet and overbite are within norms. PMID:23094557

  7. Segmental LeFort I osteotomy for treatment of a class III malocclusion with temporomandibular disorder

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    Marcos Janson

    2008-08-01

    Full Text Available This article reports the case of a 19-year-old young man with Class III malocclusion and posterior crossbite with concerns about temporomandibular disorder (TMD, esthetics and functional problems. Surgical-orthodontic treatment was carried out by decompensation of the mandibular incisors and segmentation of the maxilla in 4 pieces, which allowed expansion and advancement. Remission of the signs and symptoms occurred after surgical-orthodontic intervention. The maxillary dental arch presented normal transverse dimension. Satisfactory static and functional occlusion and esthetic results were achieved and remained stable. Three years after the surgical-orthodontic treatment, no TMD sign or symptom was observed and the occlusal results had not changed. When vertical or horizontal movements of the maxilla in the presence of moderate maxillary constriction are necessary, segmental LeFort I osteotomy can be an important part of treatment planning.

  8. An innovative approach for correction of pseudo class III malocclusion with the use of "Planas direct tracks"

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    Ketan Sukumar Vora

    2013-01-01

    Full Text Available Anterior cross bite due to a pseudo Class III is a kind of malocclusion, which has a potential to turn into a facial deformity. This orthodontic emergency should be treated as soon as it is observed. A case of pseudo Class III was treated with Planas direct tracks (PDT. The PDT was designed such that the distal incline of the upper block occludes with mesial incline of the lower block such that the mandible will have a posterior path of closure with condyles in centric relation. Significant clinical change was seen in the subject. There was a significant reduction in mesial step and a considerable improvement in the facial profile. Cephalometrically, there was a significant increase seen in the lower anterior facial height. PDT is an efficient solution for the correction of early pseudo Class III malocclusion.

  9. Base of the skull morphology and Class III malocclusion in patients with unilateral cleft lip and palate

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    Mariana Maciel Tinano

    2015-02-01

    Full Text Available OBJECTIVE: The aim of the present study was to determine the morphological differences in the base of the skull of individuals with cleft lip and palate and Class III malocclusion in comparison to control groups with Class I and Class III malocclusion. METHODS: A total of 89 individuals (males and females aged between 5 and 27 years old (Class I, n = 32; Class III, n = 29; and Class III individuals with unilateral cleft lip and palate, n = 28 attending PUC-MG Dental Center and Cleft Lip/Palate Care Center of Baleia Hospital and PUC-MG (CENTRARE were selected. Linear and angular measurements of the base of the skull, maxilla and mandible were performed and assessed by a single calibrated examiner by means of cephalometric radiographs. Statistical analysis involved ANCOVA and Bonferroni correction. RESULTS: No significant differences with regard to the base of the skull were found between the control group (Class I and individuals with cleft lip and palate (P > 0.017. The cleft lip/palate group differed from the Class III group only with regard to CI.Sp.Ba (P = 0.015. Individuals with cleft lip and palate had a significantly shorter maxillary length (Co-A in comparison to the control group (P < 0.001. No significant differences were found in the mandible (Co-Gn of the control group and individuals with cleft lip and palate (P = 1.000. CONCLUSION: The present findings suggest that there are no significant differences in the base of the skull of individuals Class I or Class III and individuals with cleft lip and palate and Class III malocclusion.

  10. Assessment of temporomandibular disorder and occlusion in treated class III malocclusion patients

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    Karyna Valle-Corotti

    2007-04-01

    Full Text Available OBJECTIVE: The aims of this study were to compare the prevalence of temporomandibular disorders (TMD in individuals submitted to either orthodontic or ortho-surgical Class III malocclusion treatment and to assess the influence of occlusal aspects on TMD severity. MATERIAL AND METHODS: The sample consisted of 50 individuals divided into two groups, according to the type of treatment (orthodontic or orthodontic with orthognathic surgery. The presence of signs and symptoms of TMD was evaluated by an anamnestic questionnaire and a clinical examination, including TMJ and muscle palpation, active mandibular range of motion, joint noises and occlusal examination. RESULTS: Based on the anamnestic questionnaire, 48% had no TMD, 42% had mild TMD and 10% had moderate TMD. The presence and severity of TMD did not show any relationship with the type of orthodontic treatment (p>0.05. The chi-square test showed a positive association (p<0.05 between TMD and non-working side occlusal interferences. CONCLUSION: Based on the methodology used and the results obtained, it may be concluded that Class III orthodontic treatment was not associated with the presence of TMD signs and symptoms and the non-working side contacts can be occlusal factors of risk. There was no significant difference in TMD prevalence between the studied groups (orthodontically treated patients and patients treated with orthodontics followed by orthognathic surgery.

  11. Extreme Dental Compensation in an Adult Skeletal Class III Malocclusion: 3-Year Follow-up of a Successfully Compromised Treatment.

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    Estelita, Sérgio; Janson, Guilherme; Chiqueto, Kelly

    2015-01-01

    Nonsurgical orthodontic treatment of a patient with severe skeletal Class III malocclusion, negative overjet, increased overbite and maxillary crowding is described Although the treatment options included an orthodontic-surgical approach, high cost of the surgical procedure was the main reason for extreme dental compensation to have been performed. Four-premolar extraction protocol associated with intermaxillary Class III elastics were used to correct the malocclusion at the expense of increasing the initial dental compensation without producing any noticeable skeletal change. Satisfactory and stable occlusion was achieved with dental and smile esthetics improvement, but the amount of facial changes was limited by the nonsurgical protocol. The clinical results and implications of compensatory treatment as well as its relevance within the patient context are discussed based on scientific evidences. PMID:26349294

  12. Má oclusão Classe III de Angle com discrepância ântero-posterior acentuada Angle Class III malocclusion with severe anteroposterior disharmony

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    Marcos Alan Vieira Bittencourt

    2009-02-01

    Full Text Available A má oclusão Classe III de Angle é caracterizada por uma discrepância dentária ântero-posterior, que pode ou não estar acompanhada por alterações esqueléticas. Em geral, o aspecto facial fica bastante comprometido, sendo justamente esse fator, na maioria das vezes, que motiva o paciente a procurar pelo tratamento. Este caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria 4, ou seja, uma má oclusão com discrepância ântero-posterior acentuada, Classe III, com ANB menor ou igual a -2º, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.Angle Class III malocclusion is characterized by an anteroposterior dental discrepancy which may or may not be accompanied by skeletal changes. In general, distressed by a significantly compromised facial aspect, patients tend to seek treatment. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO, as representative of Category 4, i.e., a malocclusion with severe anteroposterior discrepancy, Class III, and ANB Angle equal to or smaller than -2º, as part of the requirements for obtaining the BBO Diploma.

  13. Conservative treatment for a growing patient with a severe, developing skeletal Class III malocclusion and open bite.

    Science.gov (United States)

    Xu, Yue; Zhu, Ping; Le, Linda; Cai, Bin

    2014-06-01

    An 8-year-old Chinese girl sought treatment for a severe skeletal Class III malocclusion and open-bite skeletal pattern. Traditionally, patients with a skeletal Class III malocclusion are treated after they have stopped growing, and then they are treated with a combined orthodontic and orthognathic surgery approach. But the risks and expenses of this treatment plan are not acceptable to all patients. This young patient was treated with facemask therapy, a maxillary expansion device, and a molar occlusal splint for maxillary developmental stimulation with control of vertical jaw growth. After the completion of orthopedic therapy, 2 × 4 technology was used to adjust molar positions. A bonded tongue crib was used in the early permanent dentition to help the patient break her bad tongue habits. Straight-wire appliances were used for 16 months to adjust the occlusal relationship. This achieved significant improvement in anterior tooth relationships and facial profile esthetics. At the 2-year posttreatment follow-up, the results were satisfactory. The success of the sagittal relationship correction between the maxilla and the mandible for a skeletal Class III malocclusion depends on the coordination of transverse and vertical relationships combined with the growth potential of each patient.

  14. Miniscrew-assisted mandibular molar distalization in a patient with skeletal class-III malocclusion: A clinical case report

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    Seyed Mohammadreza Safavi

    2013-01-01

    Full Text Available In nongrowing patients with mild skeletal Class-III malocclusion, premolar extraction or molar distalization in the lower arch can be done as a part of camouflage treatment. Temporary anchorage devices are widely used for this purpose because they do not produce undesirable reciprocal effects and do not depend on the patient′s cooperation. However, most reported cases in this regard have used interradicular miniscrews in the mandibular arch and these have a risk of failure as they can loosen due to collision with adjacent roots. This article showcases mandibular molar distalization utilizing miniscrews, inserted at the retromolar area to correct a Class-III problem. A 24-year-old girl with a mild skeletal Class-III malocclusion and dental Class-III molar and canine relationship bilaterally was referred for orthodontic treatment. The treatment plan included distalization of the lower molars bilaterally followed by full fixed appliance therapy, after third molar extractions. For the lower molar distalization, the miniscrews were inserted at the retromolar pad. At the end of 21 months, a Class-I molar and canine relationship, normal overjet and overbite were obtained. The average amount of distalization of mandibular first molar was 3.2 mm at the crown level. In conclusion, placing miniscrews at the retromolar pad area for lower molar distalization was found to be a simple and effective method for correcting anterior cross bite and mandibular anterior crowding or protrusion, without the need for patient compliance.

  15. Asymmetric molar distalization with miniscrews to correct a severe unilateral Class III malocclusion.

    Science.gov (United States)

    Ma, Qiao Ling; Conley, R Scott; Wu, Tuojiang; Li, Huang

    2016-05-01

    Asymmetries are among the most challenging problems in orthodontics. Proper diagnosis is critical to discern first whether the asymmetry is dental or skeletal. If it is dental, one must then determine whether one dental arch or both are at fault. Once diagnosed, the next challenge is determining not only an appropriate treatment plan, but also the appropriate mechanics plan. This aim of this article is to present a patient with a severe asymmetry to emphasize the importance of a problem-based differential diagnosis to develop both a sound treatment plan and a mechanics plan that successfully integrates miniscrews from the start of the process. An 18-year-old woman had a Class III subdivision left malocclusion, an asymmetric lower facial third, and a deviated midline. The treatment plan consisted of asymmetric distalization of the maxillary right and mandibular left posterior dentitions to create space to resolve the deviated midlines, correct the canted occlusal plane, and obtain an ideal occlusion. Active treatment with Clarity ceramic 0.022 × 0.028-in appliances (3M Unitek, Monrovia, Calif), temporary anchorage devices, and a pendulum appliance lasted 22 months. The final result and the 2-year retention records demonstrate that a harmonious facial balance, an attractive smile, ideal occlusal relationships, and a stable outcome were achieved. This case report shows that with proper planning, asymmetric use of temporary anchorage devices in multiple posterior quadrants can be used to obtain molar distalization, and this approach is an effective alternative to dental extraction therapy. PMID:27131255

  16. Orthodontic decompensation in skeletal Class III malocclusion: redefining the amount of movement assessed by Cone-Beam Computed Tomography

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    José Antonio Zuega Cappellozza

    2015-10-01

    Full Text Available Introduction:Cone-Beam Computed Tomography (CBCT is essential for tridimensional planning of orthognathic surgery, as it allows visualization and evaluation of bone structures and mineralized tissues. Tomographic slices allow evaluation of tooth inclination and individualization of movement performed during preoperative decompensation. The aim of this paper was to assess maxillary and mandibular incisors inclination pre and post orthodontic decompensation in skeletal Class III malocclusion.Methods:The study was conducted on six individuals with skeletal Class III malocclusion, surgically treated, who had Cone-Beam Computed Tomographic scans obtained before and after orthodontic decompensation. On multiplanar reconstruction view, tomographic slices (axial, coronal and sagittal were obtained on the long axis of each incisor. The sagittal slice was used for measurement taking, whereas the references used to assess tooth inclination were the long axis of maxillary teeth in relation to the palatal plane and the long axis of mandibular teeth in relation to the mandibular plane.Results:There was significant variation in the inclination of incisors before and after orthodontic decompensation. This change was of greater magnitude in the mandibular arch, evidencing that natural compensation is more effective in this arch, thereby requiring more intensive decompensation.Conclusion:When routinely performed, the protocols of decompensation treatment in surgical individuals often result in intensive movements, which should be reevaluated, since the extent of movement predisposes to reduction in bone attachment levels and root length.

  17. Oral Rehabilitation With Orthognathic Surgery After Dental Implant Placement for Class III Malocclusion With Skeletal Asymmetry and Posterior Bite Collapse.

    Science.gov (United States)

    Ohba, Seigo; Nakatani, Yuya; Kawasaki, Takako; Tajima, Nobutaka; Tobita, Takayoshi; Yoshida, Noriaki; Sawase, Takashi; Asahina, Izumi

    2015-08-01

    Increasing numbers of older patients are seeking orthognathic surgery to treat jaw deformity. However, orthodontic and orthognathic surgical treatment is difficult in cases without occlusal vertical stop. A 55-year-old man presented with Class III malocclusion and mandibular protrusion including esthetic problems and posterior bite collapse. He underwent dental implant treatment to reconstruct an occlusal vertical stop before orthognathic surgery. His occlusal function and esthetic problems improved after surgery, and his skeletal and occlusal stability has been maintained for 6 years. Dental implant placement at appropriate positions could help to determine the position of the proximal segment at orthognathic surgery and could shorten the time required to restore esthetic and occlusal function. This case demonstrates how skeletal and dental stability can be maintained long after surgery in a patient with jaw deformity and posterior bite collapse. PMID:26035376

  18. Evaluation of cephalometric changes in patients with class III malocclusion in mixed dentition period following face mask therapy and slow maxillary expansion

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    Ahmad Akhondi MS.

    2008-11-01

    Full Text Available "nBackground and Aim: Among different treatments of patients with Class III malocclusion , orthopedic protraction of maxilla has been known as an effective method in mixed dentition period. The aim of this study was to evaluate the cephalometric changes of Cl III patients in mixed dentition period following face mask therapy and slow maxillary expansion. "nMaterials and Methods: This was a before-after study which was conducted on 10 children in mixed dentition period, who had class III malocclusion and maxillary deficiency according to the Stiener and Mc Namara's analysis. The patients were all treated by protraction face mask and slow maxillary expansion. The cephalometric changes of maxilla , mandible and dental relations during the treatment were analyzed by Paired sample T Test. P<0.05 was considered as the level of significant. "nResults: The overjet increasement was 1.7mm. Co. ANS distance improvement was 5.6mm, Ptm.ANS distance increasing was 3mm, and ultimately improvement of Gf.s distance was 1.5mm which were all statistically significant (p<0.05. "nConclusion: Based on the results of this study, face mask therapy with slow maxillary expansion is able to improve the horizotal position of maxilla, in patients with Cl III malocclusion , in mixed dentition period.

  19. Má oclusão Classe III, com mordida cruzada posterior unilateral e assimetria facial Class III malocclusion with unilateral posterior crossbite and facial asymmetry

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    Silvio Rosan de Oliveira

    2010-10-01

    Full Text Available Este artigo relata o tratamento ortodôntico realizado em uma paciente adulta, com 36 anos de idade, portadora de um padrão esquelético e dentário de Classe III, com mordida cruzada posterior unilateral esquerda e assimetria mandibular, além de uma diferença relativamente grande entre máxima intercuspidação habitual (MIH e relação cêntrica (RC. O tratamento foi realizado com expansão dentária superior, contração dentária inferior e descruzamento anterior, eliminando a diferença entre MIH e RC. O resultado obtido foi pautado sobre um diagnóstico criterioso e um planejamento de compensação ortodôntica, sem intervenção cirúrgica nos maxilares, por solicitação da paciente. Este caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria 5, ou seja, má oclusão com problema transverso, apresentando pelo menos um quadrante em cruzamento, como parte dos requisitos para obtenção do título de Diplomado pelo BBO.This article reports on the orthodontic treatment performed on a 36-year-old female patient with skeletal and dental Class III pattern, presenting with a left unilateral posterior crossbite and mandibular asymmetry, and a relatively significant difference between maximum intercuspation (MIC and centric relation (CR. The treatment was performed with maxillary dental expansion, mandibular dental contraction and anterior crossbite correction, eliminating the difference between MIC and CR. Results were based on careful diagnosis and planning of orthodontic compensation without surgical intervention in the maxilla, at the request of the patient. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as representative of Category 5, i.e., malocclusion with a transverse problem, presenting with a crossbite in at least one of the quadrants, as part of the requirements for obtaining the BBO Certificate.

  20. 安氏Ⅲ类骨性Ⅲ类与安氏I类错牙合畸形舌体形态位置及舌骨位置的比较研究%Comparative Study between the tongue shape and hyoid bone position in Angle Class III and Skeletal Class III Malocclusion and Those in Angle Class I Malocclusion

    Institute of Scientific and Technical Information of China (English)

    袁小平; 朗么磋; 王昊

    2014-01-01

    Objective To compare the tongue shape and hyoid bone position in Angle class III and skeletal class III malocclusion with those in Angle class I malocclusion. Methods 46 cases were enrolled, including 26 cases of Angle class III and skeletal III maloc-clusion and 20 cases of Angle class I malocclusion;the dorsum of tongues were coated with barium sulfate and lateral X-ray of the head was taken;17 spots on the tongue and hyoid bone were selected and traced, and 13 measured values were analyzed. Results The tongue tips of the patients of Angle class III and skeletal class III malocclusion were positioned more anterior(O-T1), the hyoid more posterior (O-T7)and the tongue middle more inferior(O-T2,T3)compared with the patients of Angle class I malocclusion, the difference was of statistical significance (P<0.05); The tongues of patients of Angle class III and skeletal class III malocclusion were longer than those of patients of Angle class I malocclusion, the difference was of obvious statistical significance (P<0.01);The hyoid bone of patients of An-gle class III and skeletal class III malocclusion was positioned more anterior inferiorly than that of patients of Angle class I malocclu-sion, the difference was of obvious statistical significance (P<0.01, P<0.01). Conclusions The tongue shape and hyoid bone position of patients of Angle class III and skeletal class III malocclusion are of certain difference from those of patients of Angle class I malocclu-sion.%目的:比较安氏Ⅲ类骨性Ⅲ类与安氏I类错牙合畸形舌体形态位置及舌骨位置。方法对46例患者(实验组安氏Ⅲ类骨性Ⅲ类26例,对照组安氏I类20例)拍摄头侧位X光片并在舌背涂抹硫酸钡糊剂,选择舌体及舌骨的17个点进行描记,对13个测量值进行分析。结果(1)安氏Ⅲ类骨性Ⅲ类错牙合畸形患者比安氏I类错牙合畸形患者舌尖位置偏前(O-T1)、舌根位置偏后(O-T7)、舌体中断偏低(O-T2,T3

  1. Má oclusão de Classe I de Angle, com tendência à classe III esquelética, tratada com controle de crescimento Angle Class I malocclusion, with class III skeletal tendency, treated with growth control

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    Ademir Roberto Brunetto

    2009-10-01

    Full Text Available A má oclusão de Classe III de Angle é caracterizada por uma relação dentária anteroposterior inadequada, que pode ou não estar acompanhada de alterações esqueléticas. Em geral, o aspecto facial fica bastante comprometido, principalmente quando associada à deficiência no terço médio da face, sendo esse, na maioria das vezes, o principal fator que motiva o paciente a procurar tratamento. Este caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria livre, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.Angle Class III malocclusion is characterized by an anteroposterior dental alteration, which might be accompanied by skeletal deformities. Usually, the facial aspect becomes aesthetically compromised, mostly when the middle third of the face is affected (this is the main reason why patients seek for treatment.This case was presented to the directorship of the Brazilian Board of Orthodontics and Facial Orthopedics (BBO, standing for the free category, as a part of the requirements to obtain the Board's Certificate.

  2. Má oclusão Classe III de Angle, subdivisão direita, tratada sem exodontias e com controle de crescimento Angle Class III malocclusion, subdivision right, treated without extractions and with growth control

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    Sérgio Henrique Casarim Fernandes

    2010-12-01

    Full Text Available A Classe III de Angle é uma má oclusão caracterizada por discrepâncias anteroposteriores dentárias e faciais, normalmente acompanhadas por alterações esqueléticas, com componente genético associado. O diagnóstico precoce e correto e o tratamento adequado são de suma importância para promover o controle do crescimento e evitar recidivas. Este artigo relata o tratamento, executado em duas fases, de uma paciente do sexo feminino de 12 anos de idade, apresentando uma má oclusão de Classe III de Angle, subdivisão direita, com mordida cruzada anterior em máxima intercuspidação habitual (MIH e topo em relação cêntrica (RC, apresentando, ainda, falta de espaço na maxila, que foi tratada sem exodontias e com controle de crescimento. Esse caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria 1, ou seja, uma má oclusão Classe III de Angle, tratada sem exodontias e com controle de crescimento, como parte dos requisitos para a obtenção do título de Diplomado pelo BBOAngle Class III malocclusion is characterized by anteroposterior dental and facial discrepancies usually accompanied by skeletal changes associated with a genetic component. Early, accurate diagnosis and appropriate treatment are of paramount importance to promote growth control and prevent relapse. This article reports the two-phase treatment of a female patient, aged 12 years, with an Angle Class III, subdivision right malocclusion with anterior crossbite in maximum intercuspation (MIC and end-on bite in centric relation, further presenting with lack of maxillary space. The case was treated without extractions and with growth control. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as representative of Category 1, i.e., Angle Class III malocclusion treated without tooth extractions, as part of the requirements for obtaining the BBO Diploma

  3. The Effects of Maxillary Protraction with or without Rapid Maxillary Expansion and Age Factors in Treating Class III Malocclusion: A Meta-Analysis.

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    Wei Zhang

    Full Text Available We conducted a comprehensive meta-analysis of 12 studies to examine whether maxillary protraction face mask associated with rapid maxillary expansion (FM/RME could be an effective treatment for Class III malocclusion and to evaluate the effect of timing on treatment response. Patients with a maxillary deficiency who were treated with FM with or without RME were compared with those who had an untreated Class III malocclusion. In both treatment groups, forward displacement of the maxilla and skeletal changes were found to be statistically significant. In addition, posterior rotation of the mandible and increased facial height were more evident in the FM group compared with the control group. However, no significant differences were observed between the early treatment groups and late treatment groups. The results indicated that both FM/RME and FM therapy produced favorable skeletal changes for correcting anterior crossbite, and the curative time was not affected by the presence of deciduous teeth, early mixed dentition or late mixed dentition in the patient.

  4. Orthopedic treatment of Class III malocclusion with rapid maxillary expansion combined with a face mask: a cephalometric assessment of craniofacial growth patterns

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    Daniella Torres Tagawa

    2012-06-01

    Full Text Available OBJECTIVE: The aim of this prospective study was to assess potential changes in the cephalometric craniofacial growth pattern of 17 children presenting Angle Class III malocclusion treated with a Haas-type expander combined with a face mask. METHODS: Lateral cephalometric radiographs were taken at beginning (T1 and immediately after removal of the appliances (T2, average of 11 months of treatment. Linear and angular measurements were used to evaluate the cranial base, dentoskeletal changes and facial growth pattern. RESULTS: The length of the anterior cranial base experienced a reduction while the posterior cranial base assumed a more vertical position at T1. Some maxillary movement occurred, there was no rotation of the palatal plane, there was a slight clockwise rotation of the mandible, although not significant. The ANB angle increased, thereby improving the relationship between the jaws; dentoalveolar compensation was more evident in the lower incisors. Five out of 12 cases (29.41% showed the following changes: In one case the pattern became more horizontal and in four cases more vertical. CONCLUSIONS: It was concluded after a short-term assessment that treatment with rapid maxillary expansion (RME associated with a face mask was effective in the correction of Class III malocclusion despite the changes in facial growth pattern observed in a few cases.

  5. Effects of two alar base suture techniques suture techniques on nasolabial changes after bimaxillary orthognathic surgery in Taiwanese patients with class III malocclusions.

    Science.gov (United States)

    Chen, C Y-H; Lin, C C-H; Ko, E W-C

    2015-07-01

    A randomized controlled trial was designed to assess the effectiveness of two alar base cinch techniques on the changes in nasolabial morphology after bimaxillary orthognathic surgery. Sixty patients requiring a Le Fort I osteotomy to correct skeletal discrepancies were selected randomly to receive either conventional or modified alar base cinching during the intraoral wound closure procedure. Conventional cinching passed through nasalis muscle and anterior nasal spine. Modified cinching also passed through dermis tissue to increase the anchorage. Postoperative hard and soft tissue changes were evaluated using cone beam computed tomography and three-dimensional stereophotogrammetry at predefined time points. Forty-eight patients with a skeletal class III malocclusion were included. In the conventional group, there was an increase of 0.31 ± 1.31 mm in nasal width and an increase of 0.97 ± 1.60mm in columellar length. In the modified group, there was an increase of 0.81 ± 1.87 mm in the cutaneous height of the upper lip and a decrease of 0.76 ± 1.56 mm in lower prolabial width. Patients with an initial narrow nasal width, alar base width, and less vertical nostril show were more susceptible to a greater degree of change after surgery. Both alar base suture techniques are effective at controlling nasolabial form changes resulting from class III dual-jaw orthognathic surgery.

  6. Má oclusão Classe III, com mordida cruzada posterior unilateral e assimetria facial Class III malocclusion with unilateral posterior crossbite and facial asymmetry

    OpenAIRE

    Silvio Rosan de Oliveira

    2010-01-01

    Este artigo relata o tratamento ortodôntico realizado em uma paciente adulta, com 36 anos de idade, portadora de um padrão esquelético e dentário de Classe III, com mordida cruzada posterior unilateral esquerda e assimetria mandibular, além de uma diferença relativamente grande entre máxima intercuspidação habitual (MIH) e relação cêntrica (RC). O tratamento foi realizado com expansão dentária superior, contração dentária inferior e descruzamento anterior, eliminando a diferença entre MIH e R...

  7. Class II malocclusion occlusal severity description

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    Guilherme Janson

    2010-08-01

    Full Text Available OBJECTIVES: It is well known that the efficacy and the efficiency of a Class II malocclusion treatment are aspects closely related to the severity of the dental anteroposterior discrepancy. Even though, sample selection based on cephalometric variables without considering the severity of the occlusal anteroposterior discrepancy is still common in current papers. In some of them, when occlusal parameters are chosen, the severity is often neglected. The purpose of this study is to verify the importance given to the classification of Class II malocclusion, based on the criteria used for sample selection in a great number of papers published in the orthodontic journal with the highest impact factor. MATERIAL AND METHODS: A search was performed in PubMed database for full-text research papers referencing Class II malocclusion in the history of the American Journal of Orthodontics and Dentofacial Orthopedics (AJO-DO. RESULTS: A total of 359 papers were retrieved, among which only 72 (20.06% papers described the occlusal severity of the Class II malocclusion sample. In the other 287 (79.94% papers that did not specify the anteroposterior discrepancy severity, description was considered to be crucial in 159 (55.40% of them. CONCLUSIONS: Omission in describing the occlusal severity demands a cautious interpretation of 44.29% of the papers retrieved in this study.

  8. Intervenção ortocirúrgica em paciente adolescente com acentuada displasia esquelética de Classe III Orthodontic-surgical treatment in youthful patient with severe skeletal Class III malocclusion

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    Andressa Otranto de Britto Teixeira

    2007-10-01

    Full Text Available INTRODUÇÃO: a má oclusão de Classe III é caracterizada por uma discrepância esquelética ântero-posterior, podendo ou não estar acompanhada de alterações verticais, mas comumente apresenta alterações transversais associadas. O aspecto facial fica comprometido nesses pacientes, sendo esse um dos fatores que os motivam a procurar o tratamento ortodôntico. Quando o paciente encontra-se na faixa de 8 a 10 anos de idade, uma abordagem precoce é indicada. Quando o paciente é adulto e o crescimento já cessou, o tratamento vai ser decidido entre a camuflagem ortodôntica e os procedimentos ortocirúrgicos clássicos. O problema quanto à decisão terapêutica está no paciente adolescente, com acentuadas Classes III esqueléticas, quando os procedimentos interceptativos não mais surtirão o efeito desejado e as alterações faciais são muito significativas. Ainda haverá crescimento e muitas vezes há comprometimento psicossocial ou funcional. OBJETIVO: propor uma abordagem cirúrgica precoce como alternativa de tratamento para esses pacientes, mesmo que uma segunda cirurgia seja necessária após o término do crescimento. DISCUSSÃO: para se propor essa terapia, vários critérios devem ser observados para que realmente o paciente tenha benefícios com esta intervenção precoce, como pouca discrepância intra-arco e possibilidade de preparo ortodôntico pré-cirúrgico rápido. CONCLUSÃO: deve-se ter ciência que um segundo tratamento ortocirúrgico provavelmente se fará necessário após o término do crescimento e que esse tipo de tratamento não deve ser empregado como rotina.INTRODUCTION: Class III malocclusion is characterized by an anterior-posterior skeletal discrepancy that may or may not be combined with vertical alterations, but it commonly presents transverse disharmony associated. The facial aspect is affected in these patients, which is one of the factors that motivate them to look for orthodontic treatment. For young

  9. Má oclusão de Classe I de Angle, com tendência à classe III esquelética, tratada com controle de crescimento Angle Class I malocclusion, with class III skeletal tendency, treated with growth control

    OpenAIRE

    Ademir Roberto Brunetto

    2009-01-01

    A má oclusão de Classe III de Angle é caracterizada por uma relação dentária anteroposterior inadequada, que pode ou não estar acompanhada de alterações esqueléticas. Em geral, o aspecto facial fica bastante comprometido, principalmente quando associada à deficiência no terço médio da face, sendo esse, na maioria das vezes, o principal fator que motiva o paciente a procurar tratamento. Este caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO), representa...

  10. Relation between Angle Class II malocclusion and deleterious oral habits

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    José Tarcísio Lima Ferreira

    2012-12-01

    Full Text Available INTRODUCTION: Oral habits may interfere on the growth and development of the stomatognathic system and orofacial myofunctional conditions, producing changes in the position of teeth in their dental arches. OBJECTIVE: The purpose of this study was to verify the presence of deleterious oral habits in individuals with malocclusion and see if there is a predominance of Class II malocclusion in these individuals. METHODS: The records of 140 patients treated at the Clinic of Preventive Orthodontics FORP-USP who had already completed treatment were randomly selected and analyzed. Their ages ranged from 6 to 10 years and 11 months. Associations were made between the presence or absence of deleterious oral habits, type and number of habits found in each individual and the type of malocclusion according to Angle classification. The statistical analysis used was the Chi-square test with a significance level of 5%. History of deleterious oral habits was found in 67.1% of individuals. RESULTS: The Class I malocclusion was most frequent (82.9%, followed by Class II malocclusion (12.1% and Class III (5%. CONCLUSION: There was a predominance of Class II malocclusion in individuals with a history of deleterious oral habits.INTRODUÇÃO: hábitos bucais podem interferir no crescimento e desenvolvimento do sistema estomatognático e nas condições miofuncionais bucofaciais, acarretando alterações no posicionamento dos dentes nas respectivas arcadas dentárias. OBJETIVO: o objetivo dessa pesquisa foi verificar a presença de hábitos bucais deletérios em indivíduos portadores de má oclusão e observar se existe predominância de má oclusão Classe II de Angle nesses indivíduos. MÉTODOS: foram selecionadas, aleatoriamente, e analisadas 140 fichas de pacientes atendidos na Clínica de Ortodontia Preventiva da FORP-USP, que já haviam recebido alta no tratamento. A faixa etária variou dos 6 anos a 10 anos e 11 meses. Foram realizadas associações entre

  11. Evolution of Class III treatment in orthodontics.

    Science.gov (United States)

    Ngan, Peter; Moon, Won

    2015-07-01

    Angle, Tweed, and Moyers classified Class III malocclusions into 3 types: pseudo, dentoalveolar, and skeletal. Clinicians have been trying to identify the best timing to intercept a Class III malocclusion that develops as early as the deciduous dentition. With microimplants as skeletal anchorage, orthopedic growth modification became more effective, and it also increased the scope of camouflage orthodontic treatment for patients who were not eligible for orthognathic surgery. However, orthodontic treatment combined with orthognathic surgery remains the only option for patients with a severe skeletal Class III malocclusion or a craniofacial anomaly. Distraction osteogenesis can now be performed intraorally at an earlier age. The surgery-first approach can minimize the length of time that the malocclusion needs to worsen before orthognathic surgery. Finally, the use of computed tomography scans for 3-dimensional diagnosis and treatment planning together with advances in imaging technology can improve the accuracy of surgical movements and the esthetic outcomes for these patients.

  12. Relation between Angle Class II malocclusion and deleterious oral habits

    OpenAIRE

    José Tarcísio Lima Ferreira; Maria do Rosário Ferreira Lima; Luciana Zappeloni Pizzolato

    2012-01-01

    INTRODUCTION: Oral habits may interfere on the growth and development of the stomatognathic system and orofacial myofunctional conditions, producing changes in the position of teeth in their dental arches. OBJECTIVE: The purpose of this study was to verify the presence of deleterious oral habits in individuals with malocclusion and see if there is a predominance of Class II malocclusion in these individuals. METHODS: The records of 140 patients treated at the Clinic of Preventive Orthodontics...

  13. Skeletal class III camouflage by mandibular incisor extraction: A case report

    OpenAIRE

    Janardhanan Kumaresan; Tamizharasi Senthil Kumar; Senthil Kumar

    2014-01-01

    Treatment planning in orthodontics plays a key role in determining the successful treatment of any kind of malocclusion. Skeletal class III malocclusions are generally difficult to treat because of the complex nature of the skeletal and dental manifestations they produce. Mild to moderate skeletal class III malocclusions sometimes have an acceptable facial profile where orthodontic camouflage is possible. In this case report, camouflage of a mild skeletal class III is done by the extraction o...

  14. "Converting a bi-jaw surgery to a single-jaw surgery:" Posterior maxillary dentoalveolar intrusion with microimplants to avoid the need of a maxillary surgery in the surgical management of skeletal Class III vertical malocclusion

    Directory of Open Access Journals (Sweden)

    Abhisek Ghosh

    2016-01-01

    Full Text Available The management of a vertical skeletal Class III malocclusion with mandibular prognathism revolves around the protocol of bi-jaw surgery (maxillary LeFort I impaction and mandibular bilateral sagittal split osteotomy with setback. The maxillary surgery not only provides increased stability to the ultimate surgical outcome but also increases the amount by which the mandibular set back can be done, therefore aiding in greater profile improvement. With the need of maxillary surgery almost inevitable in treating such situations, the complexity and the increased discomfort associated with such surgery can never be ignored. Is it at all possible to convert a bi-jaw surgery into a single-jaw surgery with the aid of microimplants? With increasing number of patients being treated with microimplants for anterior openbite and gummy smiles, our idea was to incorporate this novel protocol in treating Class III vertical situations and therefore avoid the need of a maxillary surgery in treating such a situation, together with achieving optimum treatment outcome.

  15. Early orthodontic intervention followed by fixed appliance therapy in a patient with a severe Class III malocclusion and cleft lip and palate.

    Science.gov (United States)

    Zhang, He; Deng, Feng; Wang, Huaqiao; Huang, Qianqian; Zhang, Yi

    2013-11-01

    This case report describes the treatment of a girl, age 11 years 10 months, with a cleft lip and palate and a postsurgical scar. The clinical examination showed a concave profile, a retrusive maxilla, an asymmetric face, severe dental crowding, a Class III dental relationship, and a complete dental crossbite. Maxillary expansion and distraction, chincap, and high-pull headgear were used to moderate the skeletal discrepancy. These approaches, combined with tooth extraction and fixed orthodontic appliances, finally established a functional and esthetic occlusal relationship, normal overjet and overbite, and a well-balanced facial appearance.

  16. Class I malocclusion with anterior crossbite and severe crowding

    OpenAIRE

    Ritter, Daltro Enéas

    2014-01-01

    This article reports the orthodontic diagnosis and treatment planning carried out with a 14-year and 5-month-old female patient with esthetic and functional complaints. She presented an Angle Class I malocclusion, anterior crossbite and severe crowding in both maxillary and mandibular arches, in addition to a lightly concave straight facial profile. Orthodontic treatment did not require extraction. Crossbite was corrected by protrusion of upper teeth, which contributed to alignment and leveli...

  17. A Cephalometric Study on the Relationship between the Occlusal Plane, Ala-Tragus and Camper’s Lines, in Patients with Angle’s Class III Malocclusion

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    F. Rostamkhani

    2005-06-01

    Full Text Available Statement of Problem: Considering the importance of the occlusal plane orientation in complete denture prostheses, a study was conducted on the relationship between this plane with ala-tragus and Camper’s lines in soft tissue among individuals with class IIImalocclusion, in Mashhad School of Dentistry.Purpose: The aim of the present study was to define the best soft tissue index by which the location and inclination of the occlusal plane in complete dentures could be established.Materials and methods: The participants consisted of 13 males with Angle’s class III occlusal relationship. Radiopaque markers were attached to the intended points on soft tissue and then standard lateral cephalograms were obtained from each subject.The angles between the following lines were measured: Occlusal line (OL, Camper's line (ala-porion, AT1 (ala-superior border of tragus, AT2 (ala- mid-tragus and AT3 (ala-inferior border of tragus.Results: The mean values and standard deviations calculated from the measured variables are as follows: OL-^AT1, 5.65 (3.95 degrees; OL- ^AT2, 3.19 (2.45 degrees;OL- ^AT3, 2.92 (2.42 degrees and OL- ^Camper, 8.5 (3.83 degrees. Comparison of the results by the ANOVA test exhibited a significant difference (F=3.7, P=0.05. Asthe OL^-AT3 angle had the lowest value, the occlusal line had a stronger tendency to be parallel to the AT3 line.Conclusion: According to the present study, the inferior border of the tragus is suggested as the posterior point for ala-tragus line orientation.

  18. Class I malocclusion with anterior crossbite and severe crowding

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    Daltro Enéas Ritter

    2014-04-01

    Full Text Available This article reports the orthodontic diagnosis and treatment planning carried out with a 14-year and 5-month-old female patient with esthetic and functional complaints. She presented an Angle Class I malocclusion, anterior crossbite and severe crowding in both maxillary and mandibular arches, in addition to a lightly concave straight facial profile. Orthodontic treatment did not require extraction. Crossbite was corrected by protrusion of upper teeth, which contributed to alignment and leveling of teeth, in addition to improving the patient's facial profile. The case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO as a requirement for the BBO certification.

  19. ORTHOGNATIC SURGICAL TREATMENT OF SKELETAL CLASS III MALOCLUSION: CASE REPORT

    OpenAIRE

    GÜNGÖR, AHMET YALÇIN; Turkkahraman, Hakan; Baykul, Timucin; Aydın, Asım

    2012-01-01

    In this case report a case is presented with skeletal class III malocclusion which were treated with proper planned orthognatic surgery and orthodontic treatment. Our patient was a girl with 16 years, 3 months of chronologic and Ru period of skeletal age. A concave soft tissue profile and Class III molar relation was detected in extraoral and intraoral examination. Cephalometric evaluation revealed a significant Class III skeletal discrepancy (ANBº= -6). Presurgical orthodontics involved deco...

  20. Angle Class II malocclusion treated with extraction of permanent teeth

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    Gustavo Mattos Barreto

    2013-08-01

    Full Text Available Angle Class II malocclusion associated with anterior open bite in adult patients demands a carefully elaborated orthodontic planning, aiming at restoring not only harmonious dental and facial esthetics, but also a balanced masticatory function. Orthognathic surgery or permanent teeth extraction are often the choice of treatment, therefore, treatment decision is related to all dental, skeletal and functional aspects. The present report discusses orthodontic compensation carried out by means of upper premolar extraction performed to correct the Class II canine relationship and, consequently, the anterior open bite, accepting that the upper incisors be retroclined. This clinical case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO as part of the requirements for obtaining the BBO Certification.

  1. Skeletal class III camouflage by mandibular incisor extraction: A case report

    Directory of Open Access Journals (Sweden)

    Janardhanan Kumaresan

    2014-01-01

    Full Text Available Treatment planning in orthodontics plays a key role in determining the successful treatment of any kind of malocclusion. Skeletal class III malocclusions are generally difficult to treat because of the complex nature of the skeletal and dental manifestations they produce. Mild to moderate skeletal class III malocclusions sometimes have an acceptable facial profile where orthodontic camouflage is possible. In this case report, camouflage of a mild skeletal class III is done by the extraction of a single mandibular incisor, which helped in maintaining the profile of the patient and also in the correction of crowding in the mandibular anterior region.

  2. Removable functional appliances effective in patients with Class II malocclusions.

    Science.gov (United States)

    Madurantakam, Parthasarathy

    2016-03-01

    Data sourcesMedline (Pubmed), Embase, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, Google Scholar, Web of Science, Evidence-based Medicine, Scopus, LILACS database, Ovid database, Bibliografia Brasileira de Odontolgogia, Bandolier, Atypon Link, African Journals Online, ProQuest, Conference Paper Index, German National Library of Medicine, metaRegister of Controlled Trials.Study selectionRandomised Controlled Trials (RCT) or prospective Controlled Clinical Trials (pCCT) in patients with Class II malocclusions that compared at least one removable functional appliance (RFA) with a non-intervention control. Primary outcomes were angular measurements of skeletal, dental and soft tissue changes as measured by lateral cephalographs.Data extraction and synthesisTwo reviewers independently extracted data and assessed risk of bias. A third author assessed bias across studies. Pooling of data was done if similar control groups were used and if the same angular cephalometric measurements were reported. A random-effects model was used to analyse pooled estimates and results were expressed as mean differences (MDs) and 95% confidence intervals (CI). The extent and impact of heterogeneity was assessed.ResultsData were pooled from seventeen studies (seven RCTs and ten pCCT) involving 1031 patients with a mean age of 10.6 years. Most of the RCTs were associated with high risk of bias while most of the pCCTs were without serious methodological limitations. RFA treatment in Class II malocclusions was shown to have a statistically significant short-term effect on skeletal, dental and soft tissue relationships when compared to untreated controls. There is a minimal reduction of SNA (MD=-0.26 degree/year, 95% CI=-0.44 to -0.12 degree/year), minimal increase of SNB (MD=0.62 degree/year, 95% CI=0.36 to 0.88 degree/year) and a small decrease in ANB (MD= -1.14degree/year, 95% CI=-1.52 to 0.77 degree/year). Maxillary incisors were significantly

  3. Factors affecting buccal corridor space in Angle′s Class II Division 1 malocclusion

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    Rashmi Bhat

    2014-01-01

    Full Text Available Background and Objectives: Buccal corridor space has been thought of primarily in terms of maxillary width, but there is also evidence that they are heavily influenced by the antero-posterior position of maxilla. The present study was undertaken with an aim of evaluating and comparing the dental and skeletal factors related to buccal corridor space in individuals having Class I and Class II Division 1 malocclusions. Materials and Methods: A total of 80 subjects of which 40 were males and 40 were females in the age group of 20-30 years were selected as per inclusion criteria and were grouped as Group I having Class I malocclusion and as Group II having Class II malocclusions based on angle ANB. 12 linear and 2 angular cephalometric measurements and 4 study cast measurements were used to correlate with the buccal corridor linear ratio (BCLR, calculated on smile photograph using the Adobe Photoshop 7.0 software (Adobe Systems Inc., San Jose, California, USA. The data obtained was statistically evaluated using independent t-test and multiple linear regression analysis. Result: Buccal corridor space is larger in individuals with Class II Division 1 malocclusion when compared with individuals with Class I malocclusions. There exists a significant difference in buccal corridor space between males and females. Conclusion: The present study helps in establishing the correlation between certain factors and the amount of buccal corridor space in individuals having skeletal Class II pattern.

  4. Angle Class I malocclusion treated with lower incisor extraction

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    Vanessa Leal Tavares Barbosa

    2013-06-01

    Full Text Available In planning orthodontic cases that include extractions as an alternative to solve the problem of negative space discrepancy, the critical decision is to determine which teeth will be extracted. Several aspects must be considered, such as periodontal health, orthodontic mechanics, functional and esthetic alterations, and treatment stability. Despite controversies, extraction of teeth to solve dental crowding is a therapy that has been used for decades. Premolar extractions are the most common, but there are situations in which atypical extractions facilitate mechanics, preserve periodontal health and favor maintenance of the facial profile, which tends to unfavorably change due to facial changes with age. The extraction of a lower incisor, in selected cases, is an effective approach, and literature describes greater post-treatment stability when compared with premolar extractions. This article reports the clinical case of a patient with Angle Class I malocclusion and upper and lower anterior crowding, a balanced face and harmonious facial profile. The presence of gingival and bone recession limited large orthodontic movements. The molars and premolars were well occluded, and the discrepancy was mainly concentrated in the anterior region of the lower dental arch. The extraction of a lower incisor in the most ectopic position and with compromised periodontium, associated with interproximal stripping in the upper and lower arches, was the alternative of choice for this treatment, which restored function, providing improved periodontal health, maintained facial esthetics and allowed finishing with a stable and balanced occlusion. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO, as part of the requirements for obtaining the BBO Diplomate title.

  5. A comparative evaluation of dermatoglyphics in different classes of malocclusion

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    Garima Jindal

    2015-04-01

    Conclusion: Dermatoglyphic analysis can be used as an indicator of malocclusion at an early age, thereby aiding the development of treatments aiming to establish favorable occlusion. Inheritance and twin studies, as well as those conducted in different ethnic groups, are required to examine these relationships further.

  6. Pressure from the lips and the tongue in children with classmalocclusion

    Institute of Scientific and Technical Information of China (English)

    RUAN Wen-hua; SU Ji-mei; YE Xiao-wei

    2007-01-01

    Objective: To discuss possible relationships between classmalocclusion and perioral forces by measuring the pressure from the lips and the tongue of children with classmalocclusion. Methods: Thirty-one children with classmalocclusion were investigated and their perioral forces were measured at rest and during swallowing under natural head position by a custom-made miniperioral force computer measuring system. Results: The resting pressures exerted on the labial side and palatine side of the upper left incisor, as well as the labial side and lingual side of the lower left incisor, were 0 g/cm2, 0 g/cm2, 0.57 g/cm2and 0.23 g/cm2, respectively. Correspondingly, the swallowing forces were 2.87 g/cm2, 5.97 g/cm2, 4.09 g/cm2 and 7.89 g/cm2,respectively. No statistical difference between muscular pressure and gender existed. During swallowing, the lingual forces were significantly higher than the labial forces (P<0.01), however, at rest there was no significantly different force between these two sides. Compared to the normal occlusion patients, children with classmalocclusion had lower perioral forces. The upper labial resting forces (P<0.01), the lower labial resting forces (P<0.05) and all the swallowing pressures from the lips and the tongue (P<0.01) showed statistical differences between the two different occlusion conditions. Meanwhile, no significant difference was found for the resting pressure from the tongue between classmalocclusion and normal occlusion. Conclusion: Patients with classmalocclusion have lower perioral forces and this muscle hypofunction may be secondary to the spatial relations of the jaws. The findings support the spatial matrix hypothesis.

  7. Management of severe Class II malocclusion with sequential modified twin block and fixed orthodontic appliances

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    Sonal Chowdhary

    2016-01-01

    Full Text Available Functional appliance is an effective way of treating skeletal Class II malocclusion in children and adolescents. A 12 months stepwise mandibular advancement protocol with Herbst appliance has been proved to enhance condylar growth and improve mandibular prognathism. The present case report documents a 12-year-old boy presenting with Angle's Class II, division 1 malocclusion associated with excessive overjet (11 mm, 100% deep bite, and retrognathic mandible. He was treated by a phase I growth modification therapy using twin block appliance with lip pads in a stepwise mandibular advancement protocol followed by a phase II preadjusted Edgewise appliance therapy.

  8. Is traditional treatment a good option for an adult with a Class II deepbite malocclusion?

    Science.gov (United States)

    Abdo Quintão, Catia Cardoso; Miguel, Jose Augusto Mendes; Brunharo, Ione Portela; Zanardi, Gustavo; Feu, Daniela

    2012-01-01

    The Tweed-Merrifield directional force technique is a useful treatment approach for a patient with a Class II malocclusion with dentoalveolar protrusion. The purpose of this case report was to present the diagnosis and treatment descriptions of a patient with an Angle Class II malocclusion complicated by tooth losses, severe dentoalveolar protrusion, and skeletal discrepancy. Treatment involved extraction of the maxillary first premolars, high-pull headgear to enhance anchorage, and high-pull J-hook headgear to retract and intrude the maxillary anterior segments. A successful outcome was achieved with traditional orthodontic treatment in this borderline surgical case.

  9. Early class III occlusal tendency in children and its selective management

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    Kapur A

    2008-09-01

    Full Text Available Class III malocclusion may develop in children as a result of an inherent growth abnormality, i.e., true class III malocclusion, or as a result of premature occlusal contacts causing forward functional shift of the mandible, which is known as pseudo class III malocclusion. These cases, if not treated at the initial stage of development, interfere with normal growth of the skeletal bases and may result in severe facial deformities. The treatment should be carried out as early as possible with the aim of permitting normal growth. This paper deals with the selection of an appropriate treatment approach from the various current options available for early intervention in children developing class III occlusal tendencies; the different clinical features are depicted in the three case reports.

  10. Assessment of upper airways measurements in patients with mandibular skeletal Class II malocclusion

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    Nayanna Nadja e Silva

    2015-10-01

    Full Text Available Objective: Mandibular Class II malocclusions seem to interfere in upper airways measurements. The aim of this study was to assess the upper airways measurements of patients with skeletal Class II malocclusion in order to investigate the association between these measurements and the position and length of the mandible as well as mandibular growth trend, comparing the Class II group with a Class I one.Methods:A total of 80 lateral cephalograms from 80 individuals aged between 10 and 17 years old were assessed. Forty radiographs of Class I malocclusion individuals were matched by age with forty radiographs of individuals with mandibular Class II malocclusion. McNamara Jr., Ricketts, Downs and Jarabak's measurements were used for cephalometric evaluation. Data were submitted to descriptive and inferential statistical analysis by means of SPSS 20.0 statistical package. Student's t-test, Pearson correlation and intraclass correlation coefficient were used. A 95% confidence interval and 5% significance level were adopted to interpret the results.Results:There were differences between groups. Oropharynx and nasopharynx sizes as well as mandibular position and length were found to be reduced in Class II individuals. There was a statistically significant positive correlation between the size of the oropharynx and Xi-Pm, Co-Gn and SNB measurements. In addition, the size of the nasopharynx was found to be correlated with Xi-Pm, Co-Gn, facial depth, SNB, facial axis and FMA.Conclusion: Individuals with mandibular Class II malocclusion were shown to have upper airways measurements diminished. There was a correlation between mandibular length and position and the size of oropharynx and nasopharynx.

  11. Very few indications justify early treatment for severe Class II malocclusions

    NARCIS (Netherlands)

    Ren, Yijin

    2004-01-01

    DESIGN: This was a single-centre two-phased, parallel, randomised clinical trial (RCT) conducted over a period of more than 10 years. INTERVENTION: Children were enrolled who had severe (=7 mm overjet) Class II malocclusions and who were developmentally at least a year before their peak pubertal gro

  12. Class III treatment using facial mask: Stability after 10 years

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    Adilson Luiz Ramos

    2014-10-01

    Full Text Available Early Class III malocclusion treatment may not have long-term stability due to mandibular growth. Although some features of this malocclusion point to a better prognosis, it is practically impossible for the orthodontist to foresee cases that require new intervention. Many patients need retreatment, whether compensatory or orthodontic-surgical. The present study reports the case of a Class III patient treated at the end of the mixed dentition with the use of a face mask followed by conventional fixed appliances. The case remains stable 10 years after treatment completion. It was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO as a requirement for the title of certified by the BBO.

  13. Orthodontic retreatment of a Class III patient with significant midline asymmetry and bilateral posterior crossbite

    OpenAIRE

    Brunetto, Ademir R.

    2015-01-01

    Posterior crossbite might cause serious long-term functional problems if not early treated. Nevertheless, in older patients, treatment might include palatal expansion in order to correct such malocclusion. In view of the above, this article aims at reporting late correction of bilateral posterior crossbite associated with Angle Class III malocclusion, right subdivision, with consequent midline shift (good skeletal pattern). The case was presented to the Brazilian Board of Orthodontics and Den...

  14. Orthodontic treatment of nongrowing patient with class II division 2 malocclusion by Herbst appliance

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    Nedeljković Nenad

    2009-01-01

    Full Text Available Background. Inheritance is most casual etiological factor of Class II division 2 malocclusion. This kind of malocclusion is very difficult for treatment specially in older patients. Case report. In the female patient, 20 years old, at the beginning of the treatment at the School of Dentistry in Belgrade, lateral cephalogram showed skeletal and dentoalveolar Class II division 2 malocclusion. She was in the Herbst treatment for 8 months and 12 months more with a fixed multibracket appliance. The measurements were performed on lateral cephalograms before and after the treatment: ii, is, mi, ms, Pg and ss. The distance from these points to occlusal perpendicular line (Olp were measured and compared from cephalogram before to cephalogram after the treatment. Temporomandibular joint (TMJ tomograms were compared from before and after the treatment by superimposition. Correction was found in molar and incisor relation, overjet and overbite. There were found sagital skeletal changes and soft tissue profile improvement. Conclusion. Herbst appliance is effective in the treatment of Class II malocclusions, even in adult patients. Dental and skeletal changes as a result of Herbst treatment could be good choice instead of camouflage orthodontics or surgical decision.

  15. Dental, skeletal asymmetries and functional characteristics in Class II subdivision malocclusions.

    Science.gov (United States)

    Li, J; He, Y; Wang, Y; Chen, T; Xu, Y; Xu, X; Zeng, H; Feng, J; Xiang, Z; Xue, C; Han, X; Bai, D

    2015-08-01

    Treatment outcomes of Angle Class II subdivision malocclusions may be compromised because of the uncertainty of the aetiology. Previous studies have reported controversial ideas about the origins, but the existence of a primary contributor still remains unknown. Functional factors have been mentioned as a probable cause, but until now, there have been no supporting data. This study was a cross-sectional investigation of the characteristics of Angle Class II subdivision malocclusion, including dental, skeletal and functional factors, by comparison of the subdivision group and the normal occlusion group. The evaluations of dental and skeletal asymmetries of both groups were carried out by cone-beam computed tomography (CBCT) and analysis of dental casts. The functional deviations were evaluated by cast mounting and measuring. In the subdivision group, the asymmetric position of the glenoid fossa was found to be the most significant skeletal asymmetry. No dentoalveolar asymmetry was found in this group. The most important finding was that, in subdivision malocclusions, functional deviation resulting in pseudoasymmetry occurred in 32.86% of the study participants. This deviation is probably related to the disharmonious arch width between maxillary and mandibular dental arches in the premolar section. The origin of Angle Class II subdivision malocclusion is multifactorial, with dental, skeletal and functional factors included. Functional deviation occurs, probably due to dental arch width disharmony. Asymmetric position of the glenoid fossa may account for most of the skeletal asymmetry. PMID:25944587

  16. Compensatory canine angulation in angle Class II and III patients

    Directory of Open Access Journals (Sweden)

    Mauro Carlos Agner Busato

    2009-09-01

    Full Text Available The aim of this study was to evaluate the occurence of compensation in mesiodistal axial inclinations of canines in skeletal malocclusions patients. The sample consisted of 25 Angle Class II, division 1 malocclusion (group 1 and 19 Angle Class III malocclusion patients (group 2. After measurement of dental angulations through a method that associates plaster model photography and AutoCad software, comparisons between the groups were performed by T-test for independent samples. Results showed that there was no statistically significant difference (p < 0.05 between groups, when maxillary canine angulations were compared. Regarding the mandibular canines, there was a statistically significant difference in dental angulation, expressed by 3.2° for group 1 and 0.15° for group 2. An upright position tendency for mandibular canines was observed in the Angle Class III sample. This configures a pattern of compensatory coronary positioning, since the angulation of these teeth makes them occupy less space in the dental arch and consequently mandibular incisors can be in a more retracted position in the sagittal plane.

  17. Compensatory orthodontic treatment of Angle Class II malocclusion with posterior open bite

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    José Newton Torres

    2013-10-01

    Full Text Available The present case report addresses the treatment of an Angle Class II malocclusion in an adult female patient, long face pattern, with posterior open bite and dental arches extremely expanded, due to previous treatment. The patient and parents rejection to a treatment with orthognathic surgery led to orthodontic camouflage of the skeletal discrepancies. This clinical case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as one of the requirements to become a BBO Diplomate.

  18. Treatment of a Class II division 1 anterior open bite malocclusion.

    Science.gov (United States)

    Ong, H B

    2001-06-01

    A case report of an 11-year-old Caucasian female who presented with a Class II div I anterior open bite malocclusion. Overjet is 6 mm and the anterior open bite 2 mm. There was a history of digit sucking till she was eight years old. She was successfully treated by non-extraction with pre-adjusted Edgewise appliances and high-pull headgear for a period of 27 months.

  19. Extraction decision and identification of treatment predictors in Class I malocclusions

    OpenAIRE

    Konstantonis, Dimitrios; Anthopoulou, Chrysi; Makou, Margarita

    2013-01-01

    Background The extraction rate in orthodontics varies throughout the years. While the extraction decision is easily made or excluded in clear-cut cases, it still remains controversial what makes an orthodontist decide to extract in borderline cases. The aim of this retrospective study was to identify the percentage of extraction cases in a large group of Class I malocclusions and to clarify which variables contributed most to the extraction decision. Methods The sample consisted of 542 random...

  20. Class II malocclusion with deep overbite: a sequential approach

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    Fernando Lima Martinelli

    2012-12-01

    Full Text Available OBJECTIVE: The aim of this case report was to evaluate the results of deep overbite correction by the segmented arch technique. METHODS: The first stage of the treatment was performed with this technique to intrude incisors and canines. A maxillary transpalatal bar and a mandibular lingual arch using 0.051-in archwire were employed associated to a facial bow, anchored primarily with occipital pull and, after molar relationship correction, changed to high pull. RESULTS: Upper incisors presented a great amount of intrusion and some palatal root inclination as programmed in the treatment plan. The skeletal mandibular response was favorable to achieve profile balance. Periapical radiograph showed rounded apex of incisor roots, expected in any orthodontic intrusion movement. CONCLUSION: The clinical results present the successful approach to deep overbite malocclusion.OBJETIVO: o objetivo desse relato de caso clínico foi avaliar os resultados da correção da sobremordida exagerada por meio da técnica do arco segmentado. MÉTODOS: na primeira etapa do tratamento, utilizou-se essa técnica para intrusão dos incisivos e caninos. Em seguida, foram confeccionados e instalados uma barra transpalatina superior e um arco lingual inferior, ambos com fio de 0,051" de espessura, sendo associados ao arco facial ancorado, primeiramente, em tração occipital e, após a correção da chave de oclusão, foi modificada para tração parietal. RESULTADOS: os incisivos superiores apresentaram grande quantidade de intrusão com discreta inclinação palatal das raízes, conforme determinado no plano de tratamento. A resposta mandibular foi favorável, possibilitando o alcance de perfil mais harmonioso. Nas radiografias periapicais, observou-se suave arredondamento apical nas raízes dos incisivos, compatível com movimento de intrusão. CONCLUSÃO: os resultados clínicos conferem sucesso na abordagem da correção da sobremordida exagerada.

  1. A Morphological Study on the Relationship between Arch Form and Craniofacial Structures in Skeletal Class I and Class III Japanese Patient

    OpenAIRE

    NARUZAWA, ROBERTA MIYOE; MINOSHIMA, YASUHIRO; KAGEYAMA, TORU; Deguchi, Toshio; KURIHARA, SABURO

    1999-01-01

    Available studies about differences among races, related to prevalence of malocclusion or morphology of head and dental arches, suggest a hypothesis that the high prevalence of skeletal Class III malocclusion in Asian ancestry populations could be correlated with a tendency toward a brachycephalic head form and larger arches widths. The purpose of the present study was to evaluate anteroposterior relationship of upper and lower jaws associated to form of dental arches, maxilla, mandible, face...

  2. Cervical vertebral column morphology related to craniofacial morphology and head posture in preorthodontic children with Class II malocclusion and horizontal maxillary overjet

    DEFF Research Database (Denmark)

    Arntsen, Torill; Sonnesen, Ane Liselotte

    2011-01-01

    In preorthodontic children with Class II malocclusion and horizontal maxillary overjet, cervical column morphology was examined and related to craniofacial morphology and head posture for the first time....

  3. Successful treatment of Class II malocclusion with bidental protrusion using standard edgewise prescription

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    Mohd Ayaz

    2016-01-01

    Full Text Available This case report deals with the successful orthodontic treatment of a 14-year-old female patient having Class II malocclusion with bidental protrusion using standard edgewise prescription. She reported with forwardly placed upper front teeth and difficulty in closing lips. She had prognathic maxilla, retrognathic mandible, and full cusp Class II molar and canine relation bilaterally with overjet of 7 mm. She was in cervical vertebrae maturation indicator Stage IV. The case was treated by fixed extraction mechanotherapy. Interarch Class II mechanics was used to retract the upper incisor and to mesialize the lower molars. Simultaneously, Class I mechanics was used to upright lower incisors. Tip back bend, curve of Spee, and extra palatal root torque were incorporated in upper archwire to maintain molars in upright position and prevent extrusion and deepening of bite, respectively. There was satisfactory improvement in facial profile at the end of 24 months. After a follow-up of 6 months, occlusion was stable.

  4. Orthopedic coordination of dentofacial development in skeletal Class II malocclusion in conjunction with edgewise therapy. Part I.

    Science.gov (United States)

    Bass, N M

    1983-11-01

    The skeletal Class II malocclusion may be considered to develop as a failure of the coordinating process to maintain harmonious relationships within the developing dentofacial apparatus. If the skeletal elements are too far apart for adaptation to occur and/or if there are functional abnormalities of the orofacial musculature which inhibit coordination from taking place, a malocclusion will result. An orthopedic technique and appliance system has been developed with the intention of improving those factors responsible for the development and perpetuation of the skeletal Class II malocclusion in a primary stage of treatment. This is accomplished by means of restraint and redirection of forward maxillary growth and an increase in the velocity of mandibular growth. Concurrently, adverse soft-tissue influences are eliminated or ameliorated. Edgewise appliance therapy is subsequently carried out for the final correction. The subject is considered in two articles. This first article describes the effects of the restraint of maxillary growth on craniofacial development and the dental changes produced by a maxillary removable splint with extraoral traction and shows how they can be used clinically for correction of the skeletal Class II malocclusion. The experimental and clinical evidence supporting this approach is considered, and case histories show the clinical use of the maxillary splint. This form of maxillary therapy for the skeletal Class II malocclusion has limitations, and it is desirable for it to be incorporated into a comprehensive orthopedic system.

  5. Class II malocclusion treatment using high-pull headgear with a splint: a systematic review

    Directory of Open Access Journals (Sweden)

    Helder B. Jacob

    2013-04-01

    Full Text Available OBJECTIVE: To systematically review the scientific evidence pertaining to the effectiveness of high-pull headgear in growing Class II subjects. METHODS: A literature survey was performed by electronic database search. The survey covered the period from January 1966 to December 2008 and used Medical Subject Headings (MeSH. Articles were initially selected based on their titles and abstracts; the full articles were then retrieved. The inclusion criteria included growing subjects between 8 to 15 years of age, Class II malocclusion treatment with high-pull headgear, and a control group with Class II malocclusion. References from selected articles were hand-searched for additional publications. Selected studies were evaluated methodologically. RESULTS: Four articles were selected; none were randomized controlled trials. All of the articles clearly formulated their objectives and used appropriate measures. The studies showed that high-pull headgear treatment improves skeletal and dental relationship, distal displacement of the maxilla, vertical eruption control and upper molars distalization. One of the studies showed a slight clockwise rotation of the palatal plane; the others showed no significant treatment effect. The mandible was not affected by the treatment. CONCLUSION: While there is still a lack of strong evidence demonstrating the effects of high-pull headgear with a splint, other studies indicate that the AP relations improve due to distalization of the maxilla and upper molars, with little or no treatment effects in the mandible. Greater attention to the design should be given to improve the quality of such trials.

  6. Class II malocclusion treatment using Jasper Jumper appliance associated to intermaxillary elastics: a case report

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    Francyle Simões Herrera-Sanches

    2013-04-01

    Full Text Available INTRODUCTION: Skeletal, dental and profile discrepancies can be amended by using functional orthodontic appliances. OBJECTIVE: This study is a report of the treatment of a patient, 11 years and 4 months old, with Class II, division 1, malocclusion, convex profile, protrusion of upper incisors, pronounced overjet and overbite, and mild crowding. METHODS: The patient was treated with a Jasper Jumper associated to fixed appliances for 6 months and Class II intermaxillary elastics (3/16in during the last 4 months. After debonding, a Hawley retainer was used during daytime and a modified Bionator for night use during one year. In the lower dental arch a bonded lingual retainer was used. This treatment combination improved the profile, as well as the overjet, overbite and molar relation. RESULTS: There was clockwise mandibular rotation and increase of lower anterior facial height. The lower incisors were protruded and extruded and the lower molars were extruded. The centric occlusal relation was checked and it was coincident to the maximum usual intercuspation. CONCLUSION: It was demonstrated that the Jasper Jumper is an efficient alternative to Class II malocclusion treatment, providing improvement in the facial profile, although the changes are more dentoalveolar than skeletal.

  7. Transverse craniofacial dimensions in Angle Class II, Division 1 malocclusion according to breathing mode

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    Agda Rísia David Pinto Coelho

    2010-03-01

    Full Text Available The aim of this longitudinal study was to assess the relation between the transverse craniofacial dimensions of subjects with Class II, Division 1 malocclusion and the breathing mode presented by them. Forty Angle Class II, Division 1 malocclusion subjects of both genders participated in the study, 23 of which were predominantly nose breathers and 17 were predominantly mouth breathers. The mean age ranged from 10 years and 9 months to 14 years - Age range 1; and from 13 years and 4 months to 16 years and 6 months - Age range 2. Measurements of six transverse craniofacial dimensions were performed in P-A teleradiographs: Total Sphenoid, Total Zygomatic, Total Nasal Cavity, Total Maxilla, Total Mastoid and Total Antegonion. The transversal craniofacial dimensions were measured and compared in both groups at age ranges 1 and 2. The longitudinal assessment of age ranges 1 and 2 showed that there was no statistically significant influence of the breathing mode on the craniofacial dimensions evaluated, or on the alteration of these dimensions. Breathing mode had no influence on craniofacial development in the sample studied.

  8. Clinical effects of fixed functional Herbst appliance in the treatment of class II/1 malocclusion

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    Nedeljković Nenad

    2009-01-01

    Full Text Available Introduction. Sagittal mandible deficiency is the most common cause of skeletal Class II malocclusion. Treatment objective is to stimulate sagittal mandible growth. Fixed functional Herbst appliance use is beneficial for shortening the time required for treatment and does not depend on patient compliance. Case outline. A 13-year-old girl was referred to the Clinic of Orthodontics, School of Dentistry in Belgrade following previous unsuccessful treatment of her skeletal Class II malocclusion using an activator. The patient's poor cooperation had led to failure of the treatment. Patient was subjected to the Herbst treatment for 6 months followed by fixed appliance for another 8 months. Lateral cephalograms before and after the treatment was performed. The remodelation of condylar and fossal articulation was assessed by superimposition of pre- and post-treatment temporomandibular joint tomograms. The promotion of oral hygiene and fluoride use was performed because orthodontic treatment carries a high caries risk and risk for periodontal disease. Skeletal and dental changes were observed after treatment (correction [Max+Mand]: molar relation 7 mm, overjet 8 mm, skeletal relation 5 mm, molars 2 mm, incisors 3 mm. Combination of Herbst and fixed appliances was effective in the treatment of dental and skeletal irregularities for a short period of time. Conclusion . In the retention period, 14 months after treatment, occlusal stability exists. Follow-up care in oral prevention is based on regular recalls at the dental office and supervision at home by the parents.

  9. [Angle class I malocclusion in primary dentition and findings in permanent dentition--a follow-up study].

    Science.gov (United States)

    Legovic, M; Legovic, A; Skrinjaric, T; Sasso, A; Mady, B

    2005-01-01

    The aim of the study was to examine stability and changes in Angle Class I malocclusion from deciduous to permanent dentition in 168 subjects. All the subjects had Class I malocclusion in deciduous dentition, and were examined by the same orthodontist on two occasions during deciduous and permanent dentition. None of the subjects had received orthodontic therapy in the meantime. The results showed considerable changes from primary to permanent dentition. Crowding in primary dentition was retained in permanent dentition in 45.2% cases. In 16.2% cases it changed into normocclusion and 38.6% subjects developed other types of malocclusion. Open bite was retained in permanent dentition in 17.8% cases and in 17.8% subjects transformed into normocclusion. 64.4% subjects developed other types of malocclusion. Cross bite was retained in permanent dentition in 21.4% cases and in 28.6% subjects changed to normocclusion. Other types of malocclusion in permanent dentition developed in 50% subjects. In 30.8% of cases finding of premature loss of deciduous teeth was accompanied by extraction of some permanent teeth. Normocclusion was retained in 19.2% cases while 50% of children developed some type of malocclusion. Crowding, which was retained in permanent dentition in 45.2% cases, showed the highest degree of stability. Children with this type of anomaly in primary dentition displayed the highest frequency of total malocclusions (83.3% subjects). Out of all anomalies in primary dentition, cross bite most frequently switched to normal occlusion in permanent dentition (in 28.6% cases).

  10. Orthodontic retreatment of a Class III patient with significant midline asymmetry and bilateral posterior crossbite.

    Science.gov (United States)

    Brunetto, Ademir R

    2015-01-01

    Posterior crossbite might cause serious long-term functional problems if not early treated. Nevertheless, in older patients, treatment might include palatal expansion in order to correct such malocclusion. In view of the above, this article aims at reporting late correction of bilateral posterior crossbite associated with Angle Class III malocclusion, right subdivision, with consequent midline shift (good skeletal pattern). The case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), with DI equal to or greater than 10, as a requirement for the title of certified by the BBO. PMID:25741833

  11. Orthodontic retreatment of a Class III patient with significant midline asymmetry and bilateral posterior crossbite

    Directory of Open Access Journals (Sweden)

    Ademir R. Brunetto

    2015-02-01

    Full Text Available Posterior crossbite might cause serious long-term functional problems if not early treated. Nevertheless, in older patients, treatment might include palatal expansion in order to correct such malocclusion. In view of the above, this article aims at reporting late correction of bilateral posterior crossbite associated with Angle Class III malocclusion, right subdivision, with consequent midline shift (good skeletal pattern. The case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO, with DI equal to or greater than 10, as a requirement for the title of certified by the BBO.

  12. Lip prints: The barcode of skeletal malocclusion

    Science.gov (United States)

    Raghav, Pradeep; Kumar, Naveen; Shingh, Shishir; Ahuja, N.K.; Ghalaut, Priyanka

    2013-01-01

    Introduction: In orthodontics, apart from essential diagnostic aids, there are so many soft tissue analyses in which lips are major part of concern. However, lip prints have never been used in orthodontics as diagnostic aid or forensic tool. Therefore, this study was designed to explore the possible association of lip prints with skeletal malocclusion. Materials and Methods: A sample of 114 subjects in the age group of 18-30 years, from North Indian adult population were selected on the basis of skeletal class I, class II and class III malocclusion, each comprising of 38 subjects with equal number of males and females. Lip prints of all the individuals were recorded and digital soft copies of lateral cephalograms were taken. Lip prints were compared between different skeletal malocclusions. Results: It was found that branched lip pattern was most common in North Indian adult population with no sexual dimorphism. The Z-test for proportion showed that the prevalence of vertical lip pattern was significantly higher in subjects having skeletal class III malocclusion. Conclusion: A definite co-relation of vertical lip patterns with skeletal class III malocclusion was revealed. PMID:24255559

  13. Lip prints: The barcode of skeletal malocclusion

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    Pradeep Raghav

    2013-01-01

    Full Text Available Introduction: In orthodontics, apart from essential diagnostic aids, there are so many soft tissue analyses in which lips are major part of concern. However, lip prints have never been used in orthodontics as diagnostic aid or forensic tool. Therefore, this study was designed to explore the possible association of lip prints with skeletal malocclusion. Materials and Methods: A sample of 114 subjects in the age group of 18-30 years, from North Indian adult population were selected on the basis of skeletal class I, class II and class III malocclusion, each comprising of 38 subjects with equal number of males and females. Lip prints of all the individuals were recorded and digital soft copies of lateral cephalograms were taken. Lip prints were compared between different skeletal malocclusions. Results: It was found that branched lip pattern was most common in North Indian adult population with no sexual dimorphism. The Z-test for proportion showed that the prevalence of vertical lip pattern was significantly higher in subjects having skeletal class III malocclusion. Conclusion: A definite co-relation of vertical lip patterns with skeletal class III malocclusion was revealed.

  14. New perspective on Herbst therapy for skeletal Class II malocclusions: a proposal for maxillary protrusion management.

    Science.gov (United States)

    Filho, Leopoldino Capelozza; Siqueira, Danilo Furquim; de Castro, Renata Cristina Faria Ribeiro; An, Tien-Li; Cardoso, Mauricio de Almeida

    2012-01-01

    Angle Class II malocclusions may present morphologic deviations originated from the maxilla, mandible, or both. Since its reintroduction by Pancherz, the Herbst appliance has demonstrated effectiveness in the management of patients with mandibular deficiency. Because of the intermaxillary anchorage, the action of mandibular advancement provokes simultaneous reaction of maxillary restriction, similar to high-pull headgear. This aimed of this report is to compare two cases treated in two phases. In the first interceptive phase, the transverse problem was corrected by rapid maxillary expansion, which was followed by a Herbst appliance for mandibular advancement; in the second corrective phase, the cases were finished with fixed appliances. Although Herbst appliances were used in both patients, one patient with maxillary protrusion and another with mandibular deficiency, their use targeted different types of skeletal discrepancies. This difference allowed for the comparison of treatment effects, and although both patients had their malocclusion corrected, it seems reasonable to conclude that the final outcome was more favorable for the patient with maxillary protrusion.

  15. Treatment outcome for a sample of patients with Class II division 1 malocclusion treated at a regional hospital orthodontic department.

    LENUS (Irish Health Repository)

    Burden, D J

    1998-01-01

    This retrospective study assessed the outcome of orthodontic treatment of 264 patients with Class II division 1 malocclusion (overjet greater than 6 mm). The sample comprised patients who had completed their fixed appliance orthodontic treatment at a regional hospital orthodontic unit in the Republic of Ireland. The PAR Index (Peer Assessment Rating) was used to evaluate treatment outcome using before and after treatment study casts. The results revealed that treatment for this particular type of malocclusion was highly effective with a very few patients failing to benefit from their orthodontic treatment.

  16. The distribution of cervical vertebrae anomalies among dental malocclusions

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    Hasan Kamak

    2015-01-01

    Full Text Available Aims: The aims of our study were to investigate the distribution of cervical vertebrae anomalies (CVAs among dental Angle Class I, II, and III malocclusions in Turkish population and whether a correlation between CVA and dental malocclusion. Materials and Methods: The study was performed on lateral cephalometric radiographs which were taken at the Department of Orthodontics, Faculty of Dentistry, Kirikkale University. The final sample of 318 orthodontic patients was included in the study. Dental malocclusions were performed according to Angle classification. CVAs were categorized: (1 fusion and (2 posterior arch deficiency (PAD. The Chi-square test was used to the analysis of the potential differences among dental malocclusions. Results: The final sample of 318 patients was examined. CVA was observed in 42 individuals (of 26 [8.17%] had fusion and 16 [5.03%] had PAD, with a frequency of 13.2%. Of the 26 fusion defect, 8 (30.7% had Angle Class I, 8 (30.7% had Angle Class II, and 10 (38.4% had Angle Class III malocclusion. Of the 16 PAD, 8 (50% had Angle Class I, 8 (50% had Angle Class II but no patients with Angle Class III malocclusion was observed. The distribution of dental malocclusions regarding CVA was not statistically significant (P = 0.076. Of these 42 individuals with CVA, 52.3% (15 fusions and 7 PAD were females and 47.7% (11 fusions and 9 PAD were males. Conclusion: In our study, the prevalence of fusion and PAD were found 8.1% and 5.0% in Turkish population, respectively. Besides, no statistically significant correlation between CVA and Angle Class I, II, and III malocclusions were found. Our findings support the studies showing no gender dimorphism.

  17. Treatment effects of myofunctional appliances in different jaw rotations in Class II division 1 malocclusion

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    Kyumi V Shethiya

    2015-01-01

    Full Text Available Aim: This retrospective study was conducted to determine skeletal, dentoalveolar changes in children treated with Twin Block or activator for the treatment of Class II Division 1 malocclusion with different jaw rotations. Materials and Methods: Standardized lateral cephalograms of 32 patients (18 boys, 14 girls between the ages of 11 and 14 years were chosen and divided into two groups, high angle (FMA >27 and low angle (FMA <20. Cephalograms were taken at T1 (pre-treatment and T2 (after one year of myofunctional therapy.These were manually traced and analysed. Results: The results showed statistically significant increase in SNB angle, VRP-Pog due to forward movement of the mandible. The overjet reduced significantly due to retroclination of upper incisors and proclination of lower incisors in both groups. Conclusion: It was concluded that both high angle and low angle groups responded equally well to myofunctional therapy showing significant skeletal and dentoalveolar changes.

  18. Agenesis of maxillary lateral incisor in an Angle Class II, Division 1 malocclusion patient

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    Guilherme Thiesen

    2015-10-01

    Full Text Available The present case report describes the orthodontic treatment of a patient with agenesis of maxillary left lateral incisor and Angle Class II, Division 1 malocclusion. The patient also presented with maxillary midline deviation and inclination of the occlusal plane in the anterior region. Treatment objectives were: correction of sagittal relationship between the maxilla and the mandible; correction of midline deviation, so as to cause maxillary and mandibular midlines to coincide; correction of overbite and leveling of the occlusal plane, so as to create ideal conditions for esthetic rehabilitation of anterior teeth. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO as a requirement for the title of certified by the BBO.

  19. Craniofacial bone abnormalities and malocclusion in individuals with sickle cell anemia: a critical review of the literature

    OpenAIRE

    Cyrene Piazera Silva Costa; Halinna Larissa Cruz Correia de Carvalho; Erika Bárbara Abreu Fonseca Thomaz; Soraia de Fátima Carvalho Sousa

    2012-01-01

    This study aims to critically review the literature in respect to craniofacial bone abnormalities and malocclusion in sickle cell anemia individuals. The Bireme and Pubmed electronic databases were searched using the following keywords: malocclusion, maxillofacial abnormalities, and Angle Class I, Class II and lass III malocclusions combined with sickle cell anemia. The search was limited to publications in English, Spanish or Portuguese with review articles and clinical cases being excluded ...

  20. Semi-longitudinal Study of the Mcnamara Cephalometric Triangle in Class II and Class III Subjects Grouped by Cervical Vertebrae Maturation Stage.

    Science.gov (United States)

    Arriola-Guillén, Luis E; Fitzcarrald, Fernando D; Flores-Mir, Carlos

    2015-12-01

    The aim was to compare the McNamara cephalometric triangle values in untreated normodivergent Class II and Class III malocclusion subjects of Latin American origin grouped by cervical vertebrae maturation stage to an untreated Class I malocclusion normodivergent control group. The study was conducted on a sample of 610 pretreatment lateral cephalograms (250 male, 360 female), examined and grouped according to their anteroposterior skeletal relationship (Class I, II or III), cervical vertebrae maturation stage (Pre Pubertal Peak P1 = CS1 and CS2, Pubertal Peak P2= CS3 and CS4, and Post Pubertal Peak P3 = CS5 and CS6) and sex. Co-A, Co-Gn and ENA-Me were measured in each lateral cephalogram. ANOVA and Tukey HSD post-hoc tests were performed to determine differences between the groups. The results showed that in males, the greatest maxillary and mandibular dimensional increases occurred during the P3 stage (CS5 to CS6), while in females, they occurred in the P2 stage (CS3 to CS4). The Co-A and Co-Gn showed significant differences between the malocclusion classes (pMcNamara cephalometric triangle values were markedly different in the three normodivergent skeletal malocclusion classes. In these Latin American subjects the pubertal growth spurt occurred at different times with respect to the Caucasian and Asian norms.

  1. Cervical vertebral anomalies in skeletal malocclusions: A cross-sectional study on orthodontic patients at the Aga Khan University Hospital, Pakistan

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    Saman Faruqui

    2014-01-01

    Conclusion: Fusion between C2 and C3 seems to be the most commonly occurring anomaly. This anomaly seems to be more often associated with skeletal Class III than skeletal Class I or Class II malocclusions.

  2. Maxillary sinus floor extension and posterior tooth inclination in adolescent patients with Class II Division 1 malocclusion treated with maxillary first molar extractions

    NARCIS (Netherlands)

    Livas, Christos; Halazonetis, Demetrios J.; Booij, Johan Willem; Pandis, Nikolaos; Tu, Yu-Kang; Katsaros, Christos

    2013-01-01

    Introduction: Our objective was to investigate potential associations between maxillary sinus floor extension and inclination of maxillary second premolars and second molars in patients with Class II Division 1 malocclusion whose orthodontic treatment included maxillary first molar extractions. Meth

  3. Maxillary sinus floor extension and posterior tooth inclination in adolescent patients with Class II Division 1 malocclusion treated with maxillary first molar extractions

    NARCIS (Netherlands)

    Livas, C.; Halazonetis, D.J.; Booij, J.W.; Pandis, N.; Tu, Y.K.; Katsaros, C.

    2013-01-01

    INTRODUCTION: Our objective was to investigate potential associations between maxillary sinus floor extension and inclination of maxillary second premolars and second molars in patients with Class II Division 1 malocclusion whose orthodontic treatment included maxillary first molar extractions. METH

  4. Skeletal malocclusion: a developmental disorder with a life-long morbidity.

    Science.gov (United States)

    Joshi, Nishitha; Hamdan, Ahmad M; Fakhouri, Walid D

    2014-12-01

    The likelihood of birth defects in orofacial tissues is high due to the structural and developmental complexity of the face and the susceptibility to intrinsic and extrinsic perturbations. Skeletal malocclusion is caused by the distortion of the proper mandibular and/or maxillary growth during fetal development. Patients with skeletal malocclusion may suffer from dental deformities, bruxism, teeth crowding, trismus, mastication difficulties, breathing obstruction and digestion disturbance if the problem is left untreated. In this review, we focused on skeletal malocclusion that affects 27.9% of the US population with different severity levels. We summarized the prevalence of class I, II and III of malocclusion in different ethnic groups and discussed the most frequent medical disorders associated with skeletal malocclusion. Dental anomalies that lead to malocclusion such as tooth agenesis, crowding, missing teeth and abnormal tooth size are not addressed in this review. We propose a modified version of malocclusion classification for research purposes to exhibit a clear distinction between skeletal vs. dental malocclusion in comparison to Angle's classification. In addition, we performed a cross-sectional analysis on orthodontic (malocclusion) data through the BigMouth Dental Data Repository to calculate potential association between malocclusion with other medical conditions. In conclusion, this review emphasizes the need to identify genetic and environmental factors that cause or contribute risk to skeletal malocclusion and the possible association with other medical conditions to improve assessment, prognosis and therapeutic approaches.

  5. Changes in soft tissue profile using functional appliances in the treatment of skeletal class II malocclusion

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    Stamenković Zorana

    2015-01-01

    Full Text Available Introduction. The effects of orthodontic treatment are considered to be successful if the facial harmony is achieved, while the structures of soft tissue profile are in harmony with skeletal structures of neurocranium and viscerocranium. In patients with skeletal distal bite caused by mandibular retrognathism, facial esthetics is disturbed often, in terms of pronounced convexity of the profile and change in the position and relationship of the lips. Objective. The aim of this study was to determine the extent of soft tissue profile changes in patients with skeletal Class II malocclusion treated with three different orthodontic appliances: Fränkel functional regulator type I (FR-I, Balters’ Bionator type I and Hotz appliance. Methods. The study included 60 patients diagnosed with skeletal Class II malocclusion caused by mandibular retrognathism, in the period of early mixed dentition. Each subgroup of 20 patients was treated with a variety of orthodontic appliances. On the lateral cephalogram, before and after treatment, the following parameters were analyzed: T angle, H angle, the height of the upper lip, the position of the upper and lower lip in relation to the esthetic line. Within the statistical analysis the mean, maximum, minimum, standard deviation, coefficient of variation, two-factor analysis of variance with repeated measures and the factor analysis of variance were calculated using ANOVA, Bonferroni test and Student’s t-test. Results. A significant decrease of angles T and H was noticed in the application of FR-I, from 21.60° to 17.15°, and from 16.45° to 13.40° (p<0.001. FR-I decreased the height of the upper lip from 26.15 mm to 25.85 mm, while Hotz appliance and Balters’ Bionator type I increased the height of the upper lip, thereby deteriorating esthetics of the patient. Conclusion. All used orthodontic appliances lead to changes in soft tissue profile in terms of improving facial esthetics, with the most distinctive

  6. Cephalometric-radiographic study, in lateral norm, considering the established standards of white Brazilian teenagers who presented normal occlusions and mal-occlusions of Class I and Class II, 1st Division and the ones from Ricketts' analysis

    International Nuclear Information System (INIS)

    In the present work, our purpose was make a cephalometric-radiographic study, comparing white Brazilian teenagers who presented normal occlusion and the ones who presented malocclusions of Class I and Class II, according to RICKETT'S analysis (1960). (author)

  7. Treatment of Class II high angle malocclusions with the Herbst appliance: a cephalometric investigation.

    Science.gov (United States)

    Schiavoni, R; Grenga, V; Macri, V

    1992-11-01

    The purpose of this study was to examine the results of treatment of Class II malocclusions by using two different designs of the Herbst appliance. Cephalometric records from lateral headplates of 19 consecutively treated Class II cases were evaluated. The headplates were taken before and after the treatment stage in which the Herbst appliance was used. The patients were divided into two groups: the first group, normohypodivergent, was treated with the Herbst appliance attached to bands; the second group, hyperdivergent, was treated with the Herbst appliance attached to acrylic splints in which a high-pull headgear was also used. The results were compared between these groups and with a control group age-matched from Bolton standards to match the changes in the Herbst samples against what might be expected in case of normal growth during similar periods of time. The results of the investigation revealed the following: (1) 9 months of treatment resulted in Class I dental arch relationships in all 19 cases; (2) the Herbst appliance attached to bands did not significantly modify the vertical growth pattern of the normohypodivergent patients; and (3) in hyperdivergent patients, the use of a Herbst appliance attached to acrylic splints in conjunction with the use of a high-pull headgear allowed a better control of the vertical dimension, as assessed by the cephalometric parameters (FA, FMA, Go-Gn-SN). The clinician should be aware of the different dentofacial changes induced in the vertical plane by different designs of the Herbst appliance to better program treatment strategy.

  8. A tensor analysis to evaluate the effect of high-pull headgear on Class II malocclusions.

    Science.gov (United States)

    Ngan, P; Scheick, J; Florman, M

    1993-03-01

    The inaccuracies inherent in cephalometric analysis of treatment effects are well known. The objective of this article is to present a more reliable research tool in the analysis of cephalometric data. Bookstein introduced a dilation function by means of a homogeneous deformation tensor as a method of describing changes in cephalometric data. His article gave an analytic description of the deformation tensor that permits the rapid and highly accurate calculation of it on a desktop computer. The first part of this article describes the underlying ideas and mathematics. The second part uses the tensor analysis to analyze the cephalometric results of a group of patients treated with high-pull activator (HPA) to demonstrate the application of this research tool. Eight patients with Class II skeletal open bite malocclusions in the mixed dentition were treated with HPA. A control sample consisting of eight untreated children with Class II who were obtained from The Ohio State University Growth Study was used as a comparison group. Lateral cephalograms taken before and at the completion of treatment were traced, digitized, and analyzed with the conventional method and tensor analysis. The results showed that HPA had little or no effect on maxillary skeletal structures. However, reduction in growth rate was found with the skeletal triangle S-N-A, indicating a posterior tipping and torquing of the maxillary incisors. The treatment also induced additional deformation on the mandible in a downward and slightly forward direction. Together with the results from the conventional cephalometric analysis, HPA seemed to provide the vertical and rotational control of the maxilla during orthopedic Class II treatment by inhibiting the downward and forward eruptive path of the upper posterior teeth. The newly designed computer software permits rapid analysis of cephalometric data with the tensor analysis on a desktop computer. This tool may be useful in analyzing growth changes for

  9. Severe Class II anterior deep bite malocclusion treated with a C-lingual retractor.

    Science.gov (United States)

    Kim, Seong-Hun; Park, Young-Guk; Chung, Kyurhim

    2004-04-01

    A C-lingual retractor was placed on the lingual aspects of the six maxillary anterior teeth in a 24-year-old female patient with a Class II anterior deep-bite malocclusion. The treatment plan consisted of extracting both the upper first premolars and intruding and retracting the upper six anterior teeth. Transpalatal arches were soldered to the upper first and second molar bands and used as an intra-arch anchor unit for upper space closure. Double NiTi closed coil springs were used palatally between the hooks of the C-lingual retractor and the transplantar arches. A high-pull headgear was used for anchorage reinforcement during en masse retraction. It took 14 months to treat this patient. The correct overbite and overjet was obtained by simultaneously intruding and retracting the upper six anterior teeth into their proper positions by C-lingual retractor mechanics, which contributed to an improvement in facial balance. The treatment result was stable 6 months after debonding. The application of this new appliance, consideration in case selection, and sequence of treatment are presented.

  10. Prevalence of malocclusion and abnormal oral habits in North Indian rural children.

    Science.gov (United States)

    Guaba, K; Ashima, G; Tewari, A; Utreja, A

    1998-03-01

    This epidemiological investigation was conducted on a sample of 3164 rural children aged 6-15 years in Raipur Rani and Naraingarh blocks in the district of Ambala in Haryana. 29. 2 percent of rural children were found to have malocclusion whereas 70.8 per cent had normal occlusion. Class I malocclusion was found to be maximum in 14.4 per cent of children, while malocclusion with class II molar relationship was observed in 13.5 per cent of children. Malocclusion with Class III molar relationship was seen in 1.3 per cent of the population studied. Three per cent of rural children were found to have abnormal oral habits, predominantly tongue thrusting and thumb sucking. The frequency distribution of abnormal oral habits in children with malocclusion was found to be 10.3 per cent.

  11. Comparison of esthetic outcome after extraction or non-extraction orthodontic treatment in class II division 1 malocclusion patients

    Directory of Open Access Journals (Sweden)

    Sneh Lata Verma

    2013-01-01

    Full Text Available Introduction: The extraction of premolars as a practical form of orthodontic therapy has been accepted for many years, but there remains a controversy regarding the effect of premolar extraction to improve esthetics as well as dentoskeletal relationship. The esthetic impact of the soft-tissue profile might play a major role in deciding on premolar extraction or non-extraction treatment, particularly in borderline patients. This cephalometric study was undertaken to compare the post-treatment soft-tissue profiles of successfully managed Class II, Division 1 malocclusions treated with either all first premolar extractions or treatment with a non-extraction therapy. Materials and Methods: The sample consisted of 100 post-pubertal female patients of Class II Division I malocclusion. Group 1, treated with four first premolar extractions, consisted of 50 female patients with a mean age of 14 years 1 month. Group 2, treated without extractions, consisted of 50 patients with a mean age of 13 years 5 months. Pre-treatment and post-treatment lateral cephalometric radiographs were evaluated. The pre-treatment to post-treatment stage comparison and the intergroup comparison of the treatment changes were conducted between extraction and non-extraction groups of Class II malocclusion samples with t-tests. Results: The soft-tissue facial profiles of the extraction and non-extraction samples were the same following active treatment except for a more retruded lower lip and a more pronounced lower labial sulcus in those patients subjected to extraction. Conclusions: The extraction or non-extraction decision, if based on sound diagnostic criteria, seems to have no systematic detrimental effects on the facial profile.

  12. Changes of hyoid bone position following treatment of class II div1 malocclusion with Farmand functional appliance

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    Yassaei S

    2007-01-01

    Full Text Available Background and Aim: Unlike other bones of the head and neck, hyoid bone has no bony articulations. It is connected to mandible, cranium and pharynx through muscles and ligaments. During treatment with functional appliance in patients with class II div1 malocclusion, mandible is positioned in inferior and anterior direction. Regarding the relation between hyoid and mandibular bone, alterations of hyoid bone position can be a result of functional appliance therapy. The aim of this study was to evaluate the changes of hyoid bone position following treatment with Farmand functional appliance in patients with class II div 1 malocclusion. Materials and Methods: In this before-after clinical trial, 28 patients with class II div 1 malocclusion which were under treatment with Farmand functional appliance for 11 months were selected. Facial growth in vertical, normal or horizontal direction was determined by cephalometric measurement. Data were analyzed with Paired-t test to compare the differences of mean values pre and post treatment. Variance analysis was used to compare the three growth patterns. P<0.05 was considered as the limit of significance. Results: Hyoid bone shifted significantly forward in horizontal dimension (P<0.01 and non-significantly upward in vertical dimension. There was no significant difference among the three studied groups with respect to hyoid bone position alterations in horizontal dimension but significant difference was observed between horizontal and vertical growth pattern in vertical dimension (P<0.05. There was significant correlation between decrease of ANB angle and forward movement of hyoid bone. Conclusion: Based on the results of this study, treatment with Farmand functional appliance (Fa II leads to significant alterations in the position and anterior displacement of the hyoid bone.

  13. Changes in skeletal and dental relationship in Class II Division I malocclusion after rapid maxillary expansion: a prospective study

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    Carolina Baratieri

    2014-06-01

    Full Text Available OBJECTIVE: To assess skeletal and dental changes immediately after rapid maxillary expansion (RME in Class II Division 1 malocclusion patients and after a retention period, using cone beam computed tomography (CBCT imaging. METHODS: Seventeen children with Class II, Division 1 malocclusion and maxillary skeletal transverse deficiency underwent RME following the Haas protocol. CBCT were taken before treatment (T1, at the end of the active expansion phase (T2 and after a retention period of 6 months (T3. The scanned images were measured anteroposteriorly (SNA, SNB, ANB, overjet and MR and vertically (N-ANS, ANS-Me, N-Me and overbite. RESULTS: Significant differences were identified immediately after RME as the maxilla moved forward, the mandible moved downward, overjet increased and overbite decreased. During the retention period, the maxilla relapsed backwards and the mandible was displaced forward, leaving patients with an overall increase in anterior facial height. CONCLUSION: RME treatment allowed more anterior than inferior positioning of the mandible during the retention period, thus significantly improving Class II dental relationship in 75% of the patients evaluated.

  14. Evaluation of the position of lower incisors in the mandibular symphysis of individuals with Class II malocclusion and Pattern II profiles

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    Djalma Roque Woitchunas

    2012-06-01

    Full Text Available OBJECTIVES: This study evaluated the position of mandibular incisors in the mandibular symphysis of individuals with Class II malocclusion and Pattern II profiles. METHODS: The sample consisted of 40 Caucasian patients (20 male and 20 female with Class II malocclusion and Pattern II profile from 10 to 18 years of age (mean age of 12.84 years who were selected from the records of the School of Dentistry of Universidade de Passo Fundo, Brazil. The linear cephalometric measurements used in this study were Ricketts' 1- AP, Interlandi's line I and Vigorito's 1-VT; and the angular measurement studied was the mandibular plane angle (IMPA. RESULTS: Mandibular incisors of individuals with Class II malocclusion and Pattern II profile tended to be buccally inclined and protruded.

  15. Conservative treatment of a Class I malocclusion with 12 mm overjet, overbite and severe mandibular crowding

    Directory of Open Access Journals (Sweden)

    Marcos Alan Vieira Bittencourt

    2012-10-01

    Full Text Available INTRODUCTION: A female patient aged 12 years and 2 months had molars and canines in Class II relationship, severe overjet (12 mm, deep overbite (100%, excessive retroclination and extrusion of the lower incisors, upper incisor proclination, with mild midline diastema. Both dental arches appeared constricted and a lower arch discrepancy of less than -6.5 mm. Facially, she had a significant upper incisors display at rest, interposition and eversion of the lower lip, acute nasolabial angle and convex profile. OBJECTIVE: To report a clinical case consisting of Angle Class I malocclusion with deep overbite and overjet in addition to severe crowding treated with a conservative approach. METHODS: Treatment consisted of slight retraction of the upper incisors and intrusion and protrusion of the lower incisors until all crowding was eliminated. RESULTS: Adequate overbite and overjet were achieved while maintaining the Angle Class I canine and molar relationships and coincident midlines. The facial features were improved, with the emergence of a slightly convex profile and lip competence, achieved through a slight retraction of the upper lip and protrusion of the lower lip, while improving the nasolabial and mentolabial sulcus. CONCLUSIONS: This conservative approach with no extractions proved effective and resulted in a significant improvement of the occlusal relationship as well as in the patient's dental and facial aesthetics.INTRODUÇÃO: paciente do sexo feminino, 12 anos e 2 meses de idade, apresentava molares em relação de chave de oclusão e caninos em relação de Classe II de Angle, sobressaliência acentuada (12mm, sobremordida profunda (100%, excessiva retroinclinação e extrusão dos incisivos inferiores e projeção dos superiores, com leves diastemas interincisais. Ambas as arcadas apresentavam-se constritas e a discrepância dentária inferior era de -6,5mm. Do ponto de vista facial, apresentava grande exposição dos incisivos

  16. Distalization of maxillary molars for Classmalocclusion with Chinese Ni-Ti coil-springs appliance

    Institute of Scientific and Technical Information of China (English)

    DUAN Yin-zhong; WU Jun-jie; CHEN Xue-peng; QIAN Hong

    2005-01-01

    Objective: To evaluate the effects of the Chinese Ni-Ti coil springs appliance on distalization of maxillary molars and the reciprocal effects on the anchorage teeth. Methods :Twenty four adolescent patients(12 boys,12 girls) with Classmalocclusion were selected and the coil springs appliance was used during the treatment. Pre and postdistalization lateral cephalometric radiographs were analyzed and compared. Results: The average time for the correction of Class Ⅱ molar relationship was 4. 6 months. And the mean distance of molar distalization was 4.4 mm. The Chinese Ni-Ti coil springs also demostrated less tipping and better bodily movement of maxillary molars. Conclusion: This study suggests that the Chinese Ni-Ti coil-springs appliance distalizes the upper molar significantly, while there is no remarkable loss of anchorage because of patients' wearing headgear with J hooks at night and Class Ⅱ elastics in the day time.

  17. Expression of insulin-like growth factor-1in bony classmalocclusion%胰岛素样生长因子-1在骨性Ⅲ类错(牙合)畸形中的表达

    Institute of Scientific and Technical Information of China (English)

    陈允嘉; 李艳; 王豫蓉; 秘双燕; 吴增波; 王强; 颜婕

    2012-01-01

    Objective To study the expression of ICF-1 in bony class III malocclusion patients and its relationship with growth of mandible. Methods Twenty-four bony class III malocclusion patients and 27 bony class I malocclusion patients were included in this study. Expression of IGF-1 in mandible tissue was detected by RT-PCR and ELJSA, respectively. Results RT-PCR showed that the expression level of IGF-1 mRNA was significantly higher in bony class M malocclusion patients than in bony class I malocclusion patients (5.541 0 ± 2. 044 7 μg/μl vs 1.282 1 ±0.273 1 μg/μl, P <0. 05) . The regression factor was 0.998, which was calculated according to the correlation curve for IGF-1 optical density value and its concentration. ELISA showed that the expression level of IGF-1 protein was significantly higher in bony class malocclusion patients than in bony class I malocclusion patients (84.125 9 ±29.294 7 ng/L is 22.406 4 ±4.931 2 ng/L, P <0.05). Conclusion The more the mandible grows, the higher the expression level of IGF-1 is, which indicates that IGF-1 plays an important role in growth of mandible condyloid cartilage.%目的 研究在下颌骨发育过度导致的骨性Ⅲ类错(牙合)畸形患者中,胰岛素样生长因子-1(IGF-1)基因的表达,探讨IGF-1基因表达与下颌骨生长的关系.方法 选取骨性Ⅲ类错(牙合)畸形患者27例,骨性Ⅰ类患者(包括个别正常(牙合))27例,应用荧光定量PCR技术和酶联免疫吸附剂测定(ELISA)技术研究下颌骨中IGF-1基因的表达变化.结果 RT-PCR检测结果显示,骨性Ⅲ类错(牙合)畸形组中IGF-1mRNA的表达量为(5.5410±2.044 7)μg/μl,骨性Ⅰ类组中IGF-1mRNA的表达量为(1.2821±0.273 1)μg/μl,2组比较具有统计学差异(P<0.05).根据1GF-1基因光密度值与浓度关系曲线,得回归系数0.998.ELISA检测结果显示,骨性Ⅲ类错(牙合)畸形组中IGF-1蛋白浓度为(84.1259±29.294 7) ng/L,骨性Ⅰ类组中IGF-1蛋白浓度为(22.406 4±4.9312) ng

  18. Dental and orthopedic effects of high-pull headgear in treatment of Class II, division 1 malocclusion.

    Science.gov (United States)

    Firouz, M; Zernik, J; Nanda, R

    1992-09-01

    In the present study a prospective cephalometric investigation was undertaken to examine the skeletal and dental effects of the high-pull extraoral appliance, when the resultant force was directed through the level of trifurcation of the maxillary molars. Twelve adolescent patients with Class II, Division 1 malocclusions were selected for the study. Each patient wore the headgear for a 6-month period, an average of 12 hours a day. A group of untreated adolescent patients with Class II, Division 1 malocclusions who were in a similar age range, as well as skeletal and dental characteristics were chosen as controls. Lateral cephalometric films were taken before and after the 6-month treatment period, and before and after the observation period in the control group of patients. Our data indicate that by directing the force of the headgear approximately through the center of resistance of the maxillary molars, it is possible to accomplish simultaneously a substantial distal movement of the molars (2.6 +/- 0.6 mm), as well as significant intrusion (0.54 +/- 0.54 mm). In addition, our results demonstrate that the applied force of 500 gm was sufficient to initiate maxillary orthopedic changes in the treated patients. These changes include relative restriction of horizontal and vertical maxillary growth, as well as distal movement (mean: 0.8 mm) of the maxillary anterior border in the treatment group relative to an untreated control group. Such orthopedic changes have been previously described only in association with much higher force levels.

  19. Orthodontic retreatment using anchorage with miniplate to camouflage a Class III skeletal pattern.

    Science.gov (United States)

    Farret, Marcel Marchiori

    2016-06-01

    This manuscript describes the treatment of a 27-year-old patient who was previously treated with two maxillary first premolar extractions. The patient had skeletal Class III malocclusion, Class III canine relationship, anterior crossbite, and a concave profile. As the patient refused orthognathic surgery, a miniplate was used on the right side of the lower arch as an anchorage unit after the extraction of mandibular first premolars, aiding the retraction of anterior teeth. At the end of treatment, anterior crossbite was corrected, in which first molars and canines were in a Class I relationship, and an excellent intercuspation was reached. Furthermore, patient's profile remarkably improved as a result of mandibular incisor retraction. A 30-month follow-up showed good stability of the results obtained. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO) as one of the requirements to become diplomate by the BBO. PMID:27409659

  20. Skeletal maturation of the cervical vertebrae: association with various types of malocclusion.

    Science.gov (United States)

    Armond, Mônica Costa; Generoso, Rodrigo; Falci, Saulo Gabriel Moreira; Ramos-Jorge, Maria Letícia; Marques, Leandro Silva

    2012-01-01

    The identification of the skeletal maturation stage of the cervical vertebrae has proven an important reference for orthodontic diagnosis. The aim of the present study was to determine the association between the skeletal maturation stage of the cervical vertebrae and types of malocclusion according to the age and gender of participants. A total of 361 individuals (168 males and 193 females) between 8 and 14 years of age were selected from a convenience sample. Malocclusions were diagnosed through study models using the Angle classification. Maturation stages of the cervical vertebrae were determined using the method proposed by Hassel and Farman. Statistical analysis involved the chi-square test (p £ 0.05) and multiple logistic regression (forward stepwise procedure). Significant differences were observed between the stage of skeletal maturation of the cervical vertebrae and gender at ages 11, 12 and 14 years. Males with Class II malocclusion were twice as likely to be in Stage 1 or 2 of cervical vertebra maturation than individuals with Class I malocclusion (OR = 2.1 [CI 95%, 1.33-3.18]). There were no differences between individuals with Class I and Class III malocclusions. The association between skeletal maturation of the cervical vertebrae and type of malocclusion was significant, suggesting a skeletal component in the determination of Class II malocclusions.

  1. Severe Class II Division 1 malocclusion in an adolescent patient, treated with a novel sagittal-guidance Twin-block appliance.

    Science.gov (United States)

    Li, Peilun; Feng, Jing; Shen, Gang; Zhao, Ning

    2016-07-01

    Class II malocclusion is a challenging anomaly in orthodontic practice. Various types of functional appliances are used to correct Class II skeletal and occlusal disharmonies in growing patients, including the Twin-block. We used a modified sagittal-guidance Twin-block appliance combined with a fixed appliance and microimplant anchorage to treat a 13-year-old Chinese boy with a severe skeletal Class II malocclusion and mandibular retrognathia. Normal overjet and a Class I molar relationship were achieved because of the advancement of mandibular development, the restriction of maxillary growth, and dentoalveolar modifications in both the maxilla and the mandible. Favorable skeletal, dental, and soft tissue relationships were accomplished after 24 months of treatment. After 2 years of retention, the results remained stable. PMID:27364217

  2. C-orthodontic microimplant for distalization of mandibular dentition in Class III correction.

    Science.gov (United States)

    Chung, Kyurhim; Kim, Seong-Hun; Kook, Yoonah

    2005-01-01

    A 16-year-old male patient with a Class III malocclusion and 2 lower missing central incisors presented for treatment. The treatment plan consisted of asymmetrically distalizing the lower dentition and regaining space for lower anterior prosthetic work. C-implants were to be used as anchorage for Class III intermaxillary elastics, and two C-orthodontic microimplants (C-implants) were placed in the interdental spaces between the upper second premolars and first molars. The particular design of the C-implant head minimized gingival irritation during the orthodontic treatment. Sliding jigs were applied on the buccal for distalization of the lower posterior teeth. The correct overbite and overjet were obtained by distalizing the entire lower dentition into its proper position with C-implant anchorage, which contributed to an improvement in facial balance. It took 15 months to treat this case. The application of this new microimplant, considerations for case selection, and the sequence of treatment are presented.

  3. Three-dimensional assessment of the temporomandibular joint and mandibular dimensions after early correction of the maxillary arch form in patients with Class II division 1 or division 2 malocclusion

    OpenAIRE

    Coskuner, Hande Gorucu; Ciger, Semra

    2015-01-01

    Objective This study aimed to assess three-dimensional changes in the temporomandibular joint positions and mandibular dimensions after correction of dental factors restricting mandibular growth in patients with Class II division 1 or division 2 malocclusion in the pubertal growth period. Methods This prospective clinical study included 14 patients each with Class II division 1 (group I) and Class II division 2 (group II) malocclusions. The quad-helix was used for maxillary expansion, while u...

  4. Características cefalométricas de pacientes portadores de más oclusões Classe I e Classe II de Angle Cephalometric characteristics of patients with Angle Class I and Class II malocclusions

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    Rogério Lacerda dos Santos

    2009-06-01

    Full Text Available OBJETIVOS: o presente estudo comparou algumas medidas cefalométricas relacionadas às características faciais em pacientes com má oclusão Classe I, Classe II 1ª divisão e Classe II 2ª divisão. METODOLOGIA: foram selecionadas 130 telerradiografias de pacientes leucodermas em fase inicial de tratamento ortodôntico, com idades entre 10 e 16 anos (média de 12,6 anos; e divididos em 3 grupos. As medidas cefalométricas utilizadas neste estudo foram: ANB, ı-SN, IMPA, AML, Ls-ı, Li-ī e EI. A análise de variância e o teste de Tukey foram realizados nas medidas ANB, IMPA, AML, ı-SN e Li-ī. Para as demais variáveis (EI e Ls-ı foi utilizado o teste de Kruskal Wallis e Dunn. RESULTADOS: os resultados mostraram que as medidas Ls-ı e EI tiveram diferença estatisticamente significativa entre os grupos I e II-1 e entre os grupos II-1 e II-2 (p AIM: The present study compared some cephalometric measurements related to facial characteristics in patients having Class I, Class II division 1, and Class II division 2 malocclusions. METHODS: One hundred and thirty teleradiographs of Caucasian patients aged 10-16 years (mean age of 12.6 years under initial orthodontic treatment were selected for study and divided into 3 groups. The cephalometric measurements used in the present study were the following: ANB, ı-SN, IMPA, AML, Ls-ı, Li-ī, and EI. Variance analysis and Tukey's test were carried out for ANB, IMPA, AML, ı-SN, and Li-ī measurements, whereas Kruskal-Wallis and Dunn's tests were used for EI and Ls-ı. RESULTS: Statistically significant differences were found for EI and Ls-ı measurements when Group II-1 was compared to Group I and Group II-2 (p < 0.05. ANB and IMPA measurements also had statistically significant differences when Group I was compared to Group II-1 and Group II-2 (p < 0.05. The measurement ı-SN had statistically significant differences between the 3 groups (p < 0.05. CONCLUSIONS: One can conclude that the measurement

  5. Comparison of Natural Head Position in Different Anteroposterior Malocclusions

    Science.gov (United States)

    Hedayati, Zohreh; Paknahad, Maryam; Zorriasatine, Farbod

    2013-01-01

    Objective: The facial esthetics after orthodontic treatment and orthognathic surgery may be affected by the patient’s natural head position. The purpose of this study was to evaluate the natural head position for the three skeletal classes of malocclusion. Materials and Methods: Our sample consisted of 102 lateral cephalometric radiographs of patients aged 15 to 18 years; class I (n=32), class II (n=40) and class III (n=30). Nine landmarks of the craniofacial skeleton and three landmarks of the cervical vertebrae were determined. Variables consisted of two angles for cervical posture (OPT/Hor and CVT/Hor), three angles for craniofacial posture (SN/Ver, PNS-ANS/Ver, and ML/Ver ) and five for craniofacial angulation (SN/OPT, SN/CVT, PNS-ANS/OPT, PNS-ANS/CVT, ML/CVT). The data were analyzed statistically using ANOVA and post hoc tests. Results: PNS-ANS/Ver and SN/Ver differed significantly (p<0.05) among the three groups. There were no significant differences between class I and class II malocclusions for the indicator angles of cranial posture except for ML/Ver. The SN/CVT was significantly different for class I compared to class III patients. A head posture camouflaging the underlying skeletal class III was observed in our population. Conclusion: A more forward head posture was observed in skeletal class III participants compared to skeletal class I and II and that class III patients tended to incline their head more ventral compared to class I participants. These findings may have implications for the amount of jaw movements during surgery particularly in patients with a class III malocclusion. PMID:25512747

  6. Comparison of Natural Head Position in Different Anteroposterior Malocclusions

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    Zohreh Hedayati

    2013-01-01

    Full Text Available Objective: The facial esthetics after orthodontic treatment and orthognathic surgery may be affected by the patient’s natural head position. The purpose of this study was to evaluate the natural head position for the three skeletal classes of malocclusion.Materials and Methods: Our sample consisted of 102 lateral cephalometric radiographs of patients aged 15 to 18 years; class I (n=32, class II (n=40 and class III (n=30. Nine landmarks of the craniofacial skeleton and three landmarks of the cervical vertebrae were determined. Variables consisted of two angles for cervical posture (OPT/Hor and CVT/Hor, three angles for craniofacial posture (SN/Ver, PNS-ANS/Ver, and ML/Ver and five for craniofacial angulation (SN/OPT, SN/CVT, PNS-ANS/OPT, PNS-ANS/CVT, ML/CVT. The data were analyzed statistically using ANOVA and post hoc tests.Results: PNS-ANS/Ver and SN/Ver differed significantly (p<0.05 among the three groups. There were no significant differences between class I and class II malocclusions for the indicator angles of cranial posture except for ML/Ver. The SN/CVT was significantly different for class I compared to class III patients. A head posture camouflaging the underlying skeletal class III was observed in our population.Conclusion: A more forward head posture was observed in skeletal class III participants compared to skeletal class I and II and that class III patients tended to incline their head more ventral compared to class I participants. These findings may have implications for the amount of jaw movements during surgery particularly in patients with a class III malocclusion

  7. 46 CFR 50.30-20 - Class III pressure vessels.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Class III pressure vessels. 50.30-20 Section 50.30-20... Fabrication Inspection § 50.30-20 Class III pressure vessels. (a) Class III pressure vessels shall be subject... specifically exempted by other regulations in this subchapter. (b) For Class III welded pressure vessels,...

  8. A extração de segundos molares superiores para o tratamento da Classe II Extraction of upper second molars for treatment of Angle Class II malocclusion

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    Maurício Barbieri Mezomo

    2010-06-01

    Full Text Available Este trabalho tem por objetivo apresentar uma abordagem alternativa para o tratamento ortodôntico das más oclusões de Classe II. Através de uma revisão da literatura, verificou-se que a extração de segundos molares superiores demonstrou ser uma alternativa viável para o tratamento desse tipo de má oclusão. Essa opção terapêutica possibilita maior rapidez na distalização dos primeiros molares com menor necessidade de cooperação por parte do paciente. Porém, a análise do grau de formação, posição intraóssea e morfologia do terceiro molar deve ser cuidadosamente realizada para proporcionar o correto posicionamento do mesmo no lugar do segundo molar extraído. Dois casos clínicos apresentarão a sequência do diagnóstico e tratamento com essa mecânica, exibindo resultados adequados dos pontos de vista funcional e estético.The purpose of this article is to present an alternative approach to the orthodontic treatment of Angle Class II malocclusion. According to a literature review it was observed that the extraction of upper second molars has proven to be a viable alternative for the treatment of this type of malocclusion. This therapeutic option enables faster first molar retraction and requires less patient compliance. However, the level of development, intraosseous position and morphology of the third molar should be carefully evaluated to ensure its correct positioning in place of the extracted second molar. Two clinical case reports will demonstrate that the sequence of diagnosis and treatment used with this mechanics yields satisfactory functional and aesthetic results.

  9. 25 CFR 502.4 - Class III gaming.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false Class III gaming. 502.4 Section 502.4 Indians NATIONAL INDIAN GAMING COMMISSION, DEPARTMENT OF THE INTERIOR GENERAL PROVISIONS DEFINITIONS OF THIS CHAPTER § 502.4 Class III gaming. Class III gaming means all forms of gaming that are not class I gaming or...

  10. Prevalence of Malocclusion among 10-12-year-old Schoolchildren in Kozhikode District, Kerala: An Epidemiological Study

    Science.gov (United States)

    Jeseem, MT; Kumar, TV Anupam

    2016-01-01

    ABSTRACT Background: A malocclusion is an irregularity of the teeth or a malrelationship of the dental arches beyond the range of what is accepted as normal. Objectives: To determine the prevalence of malocclusion in children aged 10-12 years in Kozhikode district of Kerala, South India. Materials and methods: A descriptive cross-sectional study was conducted among schoolchildren aged 10-12 years in six schools in Kozhikode district of Kerala, South India. A total of 2,366 children satisfied the inclusion criteria. Occlusal characteristics like crossbite, open bite, deep bite, protrusion of teeth, midline deviations, midline diastema and tooth rotation were recorded. The data were tabulated and analyzed using Chi-square test. Results: The results revealed that the overall prevalence of malocclusion was 83.3%. Of this, 69.8% of the children had Angle’s class I malocclusion, 9.3% had class II malocclusion (division 1 = 8.85%, division 2 = 0.5%) and 4.1% had class III malocclusion; 23.2% showed an increased overjet (>3 mm), 0.4% reverse overjet, 35.6% increased overbite (>3 mm), 0.29% open bite, 7.2% crossbite with 4.6% crossbite of complete anterior teeth, 63.3% deviation of midline, 0.76% midline diastema and 3.25% rotated tooth. No significant differences in gender distributions of malocclusions were noted except for increased overjet and overbite. Conclusion: There is high prevalence of malocclusion among schoolchildren in Kozhikode district of Kerala. Early interception and early correction of these malocclusions will eliminate the potential irregularities and malpositions in the developing dentofacial complex. How to cite this article: Narayanan RK, Jeseem MT, Kumar TVA. Prevalence of Malocclusion among 10-12-year-old Schoolchildren in Kozhikode District, Kerala: An Epidemiological Study. Int J Clin Pediatr Dent 2016;9(1):50-55. PMID:27274156

  11. 3-Dimensional cephalomentry analysis of skeletal Classmalocclusion%骨性Ⅲ类错(牙合)的三维CT头影测量分析

    Institute of Scientific and Technical Information of China (English)

    吴斐; 张苗苗

    2011-01-01

    Objective To investigate the 3 -dimensional (3D) changes in the hard tissues of skeletal class III malocclusion (Clll) patients with facial asymmetry by orthognathic surgery. Methods Five female adult OlII patients treated with orthognathic surgery (Bilateral Sagittal Split Ramus Osteotomy+Maxillary Osteotomy Leforti +Genioplasty) who had 3D computerized tomography taken 1 month before (To) and 6 months after (1,) MSS.Reconstruct three -dimensional models in CT post-processing workstation.The landmarks and variables were measured to complete 3-dimensional cephalomentry analysis. Results Mandibular prognathism of all the patients was significantly corrected. Facial asymmetry and lean of the occlusion plane was significantly corrected too (Pg-dev, Gc-Gc',Go-Na-Go') .There were significant changes in hard tissue related in the.anteroposterior (SNA.ANB) .vertical (Ans-Me,MP/SN) and horizontal (Gc-Gc',Go-Na-Go') direction. Conclusion ?There were significant changes in the hard tissues of skeletal class III malocclusion (Clll) patients with facial asymmetry by orthognathic surgery. ? The three -dimensional cephalomentry analysis indicated a more comprehensive characteristic of Craniofacial.compared with traditional cephalomentry analysis.%目的:观察骨性安氏Ⅲ类偏(牙合)的成人女性患者接受正颌手术后硬组织的三维改变.方法:5例接受外科手术(上颌Lefortl型截骨术+双侧下颌升支矢状劈开切骨术+颏部成形术)的成人女性骨性安氏Ⅲ类患者,分别在术前1个月(T0)和术后6个月(T1)接受3DCT扫描.在CT后处理工作站中实现三维模型重建,并进行标记点的确定和变量的测量以完成三维头影测量分析.结果:所有患者的下颌前突均得到显著纠正.不仅偏颌得到改善(Pg-dev),而且(牙合)平面的偏斜也得到矫正(0re/0P).硬组织的改变在前后向(SNA,ANB)、垂直向(Ans-Me,师/SN)和水平向(Gc-Gc',Go-Na-Go')方面均有显著改变.结论:

  12. PENGGUNAAN INCLINED BITE PLANE SEBAGAI ALAT BANTU UNTUK KOREKSI GIGITAN SILANG ANTERIOR PADA KASUS MALOKLUSI KLAS III SKELETAL

    OpenAIRE

    Amutavia P. Artsianti P.; Erwin Siregar

    2015-01-01

    Anterior crossbite occurs in children and adult. This anterior crossbite could be a dental (pseudo class III) or a skeletal class III malocclusions. A 15 year old young female came to orthodontic clinic RSGM FKGUI with maxillary dental crowding which canines were more protruded. The dental of mandible were more protruded than maxillary dental. The clinical examination, anamnesis, functional analyses and cephalometric evaluation and model study showed that it was a skeletal class III malocclus...

  13. Má oclusão Classe I de Angle com agenesia de incisivos laterais Angle Class I malocclusion and agenesis of lateral incisors

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    Fernanda Catharino Menezes Franco

    2011-08-01

    Full Text Available O planejamento ortodôntico de pacientes com agenesia de incisivos laterais envolve considerações estéticas e funcionais de grande relevância para um resultado clínico satisfatório. Tanto o fechamento dos espaços correspondentes aos dentes ausentes quanto sua abertura ou manutenção oferecem vantagens e desvantagens que devem ser avaliadas de acordo com as características individuais do paciente. Fatores importantes que influenciam o planejamento são o padrão esquelético, o tipo de má oclusão e a coloração e forma dos caninos, dentre outros. Neste artigo, teve-se como objetivo relatar o tratamento de uma paciente com má oclusão Classe I de Angle, agenesia de incisivos laterais, sobressaliência e sobremordida diminuídas, tendência à mordida aberta e mordida cruzada.A abordagem clínica foi realizada com expansão maxilar, seguida de fechamento dos espaços, com auxílio de ancoragem esquelética extrabucal. Esse caso foi apresentado à diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.Orthodontic planning for patients with agenesis of lateral incisors should include extremely relevant esthetic and functional considerations so that a satisfactory clinical result is achieved. Both space closure and space opening and maintenance have advantages and disadvantages that should be evaluated according to the patient's individual characteristics. Some of the important factors that affect planning are the skeletal pattern, the type of malocclusion and the color and shape of canines. This study reports on the treatment of a patients with Class I malocclusion and agenesis of lateral incisors, overjet, decreased overbite, and a tendency to open bite and crossbite. The clinical approach included palatal expansion followed by space closure using extraoral anchorage. This case was presented to the Committee of the Brazilian Board of Orthodontics

  14. Minimal presurgical orthodontics for a skeletal Class III patient with mandibular asymmetry.

    Science.gov (United States)

    Zhou, Yang; Zhou, Yanheng; Wang, Xiaoxia; Li, Zili

    2016-01-01

    A 19-year-old man with a skeletal Class III malocclusion was treated using minimal presurgical orthodontics. Orthodontic appliances and miniscrews were placed at the beginning of treatment, and the double-jaw-surgery was performed once the maxillary right and left first premolars were intruded, without worsening the concave profile and facial asymmetry presurgically. Different from the traditional combined orthodontic-orthognathic surgery, the jaw discrepancy was corrected first, followed by the orthodontic tooth movement. Miniscrews were used to intrude the premolars presurgically because of their interference and to provide the skeletal anchorage for intermaxillary elastics after the operation. The patient was pleased with the treatment results and satisfied with his facial and dental appearance, as well as his oral function. The 1-year follow-up photographs show a stable result both esthetically and functionally. PMID:26718384

  15. Complex networks for data-driven medicine: the case of Class III dentoskeletal disharmony

    International Nuclear Information System (INIS)

    In the last decade, the availability of innovative algorithms derived from complexity theory has inspired the development of highly detailed models in various fields, including physics, biology, ecology, economy, and medicine. Due to the availability of novel and ever more sophisticated diagnostic procedures, all biomedical disciplines face the problem of using the increasing amount of information concerning each patient to improve diagnosis and prevention. In particular, in the discipline of orthodontics the current diagnostic approach based on clinical and radiographic data is problematic due to the complexity of craniofacial features and to the numerous interacting co-dependent skeletal and dentoalveolar components. In this study, we demonstrate the capability of computational methods such as network analysis and module detection to extract organizing principles in 70 patients with excessive mandibular skeletal protrusion with underbite, a condition known in orthodontics as Class III malocclusion. Our results could possibly constitute a template framework for organising the increasing amount of medical data available for patients’ diagnosis. (paper)

  16. 25 CFR 522.12 - Revocation of class III gaming.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false Revocation of class III gaming. 522.12 Section 522.12 Indians NATIONAL INDIAN GAMING COMMISSION, DEPARTMENT OF THE INTERIOR APPROVAL OF CLASS II AND CLASS III ORDINANCES AND RESOLUTIONS SUBMISSION OF GAMING ORDINANCE OR RESOLUTION § 522.12 Revocation of class...

  17. A study on the prevalence of the idiopathic osteosclerosis in Korean malocclusion patients

    International Nuclear Information System (INIS)

    This retrospective study was performed to investigate the prevalence of the idiopathic osteosclerosis (IO) in Korean malocclusion patients according to age, sex, and the Angle's classification of malocclusion. This study consisted of 2,001 randomly selected patients from the Department of Orthodontics at the Gangneung-Wonju National University Dental Hospital, Korea. The prevalence of IO in Korean malocclusion patients was recorded using their panoramic radiographs, and the following parameters were surveyed; age, sex, and the Angle's classification of malocclusion. The chi-square test was analyzed to determine the statistical significance of differences in the prevalence of IO between age, sex, and the Angle's classification of malocclusion. The prevalence of IO in the jaws was 6.7% in a total of 2,001 examined orthodontic patients. The majority of IO was found in the mandible (96.58%). The 30-39 age group showed the highest prevalence of IO (9.60%). There was a higher prevalence in females (6.89%) than in males (6.45%). The prevalence of IO in Angle Class I group (7.07%) was the most frequent, followed by Angle Class II group (6.72%), and Angle Class III group (6.40%). However, there was no statistical significance in sex and Angle's classification of malocclusion. The prevalence of IO in malocclusion patients showed the differences between various age groups and most of them were found in the mandibular posterior area. However, sex and the type of malocclusion are not to be considered as a contributing factor of IO.

  18. A study on the prevalence of the idiopathic osteosclerosis in Korean malocclusion patients

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Seung Youp; Park, In Woo; Jang, In San; Choi, Dong Soon; Cha, Bong Kuen [College of Dentisity, Gangneung Wonju National University, Gangneung (Korea, Republic of)

    2010-12-15

    This retrospective study was performed to investigate the prevalence of the idiopathic osteosclerosis (IO) in Korean malocclusion patients according to age, sex, and the Angle's classification of malocclusion. This study consisted of 2,001 randomly selected patients from the Department of Orthodontics at the Gangneung-Wonju National University Dental Hospital, Korea. The prevalence of IO in Korean malocclusion patients was recorded using their panoramic radiographs, and the following parameters were surveyed; age, sex, and the Angle's classification of malocclusion. The chi-square test was analyzed to determine the statistical significance of differences in the prevalence of IO between age, sex, and the Angle's classification of malocclusion. The prevalence of IO in the jaws was 6.7% in a total of 2,001 examined orthodontic patients. The majority of IO was found in the mandible (96.58%). The 30-39 age group showed the highest prevalence of IO (9.60%). There was a higher prevalence in females (6.89%) than in males (6.45%). The prevalence of IO in Angle Class I group (7.07%) was the most frequent, followed by Angle Class II group (6.72%), and Angle Class III group (6.40%). However, there was no statistical significance in sex and Angle's classification of malocclusion. The prevalence of IO in malocclusion patients showed the differences between various age groups and most of them were found in the mandibular posterior area. However, sex and the type of malocclusion are not to be considered as a contributing factor of IO.

  19. Surgical correction of class II skeletal malocclusion in an adult patient

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    Ramakrishnan Balachander

    2014-01-01

    Full Text Available Correction of skeletal deformities in adult patients with orthodontics is limited. Orthognathic surgery is the best option for cases when camouflage treatment is questionable and growth modulation is not possible. This case report illustrates the benefit of the team approach in correcting vertical maxillary excess along with class II skeletal deformity. A cosmetic correction was achieved by superior repositioning of maxilla with LeFort I osteotomy and augmentation genioplasty, along with orthodontic treatment. The patient′s facial appearance was markedly improved along with functional and stable occlusion

  20. Klammt open elastic activator and twin blocks in Class II malocclusion treatment.

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    Eduardo Maikel Curbeira Hernández

    2009-04-01

    Full Text Available Background: Klammt open elastic activator and twin blocks have been two of the most worldwide studied functional appliances; however, there are different opinions about their effect on the cranium-facial complex. Objective: To determine the efficacy of these appliances in the functional treatment in Class II division I syndrome in early mixed teething. Methods: Prospective, cuasi experimental, “before-after” study without control group, including all children between 6 and 9 years of Area II in Cienfuegos municipality. After applying inclusion criteria, 20 patients were selected through simple randomized sampling and distributed in two groups, one for each technique. Lateral cranium teleradiographies were taken at the beginning and after a year of treatment, and lineal and/or angular measurements of Steiner, Ricketts, McNamara and Legan Burstone cephalograms were applied. Results: Favourable changes in cranium lateral radiographies measurements were obtained mainly from therapy with twin blocks. There was a decrease in the angle formed by the joint planes nasion-point A and nasion-point B and facial convexity, increase in mandible length and inferior facial height. Nasolabial angle and labial protuberance didn´t increase significantly. Conclusions: treated patients positively modified their bio-typology, and growth trend showed positive variations during functional therapy.

  1. The prevalence of malocclusion in urban Libyan schoolchildren

    Science.gov (United States)

    Bugaighis, Iman; Karanth, Divakar

    2013-01-01

    Objective: This study aimed to explore the prevalence of malocclusion and its distribution among 12-17 year old Urban Libyan schoolchildren. Materials and Methods: A total of 900 subjects were examined, of which 343 fulfilled the inclusion criteria; 169 males and 174 females. Molar relationship, overjet (OJ), overbite (OB), midline deviation, crossbite, and crowding/spacing were recorded. Sexual dimorphism was explored using descriptive statistics and the Chi-square tests. Results: The prevalence of malocclusion was 95.6%. Class I, Class II division 1, Class II division 2 and Class III malocclusions comprised 66.5%, 21.9%, 3.5%, and 3.7% respectively of the total sample. The OJ percentage of 51% (zero-3.5 mm), 48.4% (>3.5 mm), 0.6% (≤−3.5 mm to >zero) was recorded, with no significant sex differences (P=0.225). A normal overbite, increased and open bites were observed in 39.9%, 55.1%, and 2.3% of the group respectively with no sexual dimorphism (P=0.970). Crossbite was present in 13.1% of the group, with no significant sex difference (P=0.469). Crowding in the maxillary and mandibular arches were observed in13.9%, and 12.2% respectively. Spacing occurred in 9.4% and 7.9% of the examined maxillary and mandibular arches respectively, with no significant sex difference regarding the presence of spacing/crowding in the maxillary arch (P>0.05). Males, however, had significantly more spacing and less crowding in the mandibular arch (P<0.05). Conclusions: The prevalence of malocclusion in Libyan schoolchildren is among the highest reported in the literature. Crowding is among the least reported manifestations of malocclusion. PMID:24987636

  2. Prevalence and determinant factors of malocclusion in population with special needs in South India

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    R Muppa

    2013-01-01

    Full Text Available Objectives: Malocclusion plays an important role in the overall oral health of an individual because it is associated with periodontal disease, temporomandibular disorders and may be complicated by an individual′s disparity. Careful attention to malocclusion in children with special needs leads to a considerable improvement in the quality-of-life. The objective of the present study was to analyze the prevalence of malocclusion and its association with determinant factors in individuals with special needs in South India. Materials and Methods: A cross-sectional study was carried out that included 844 individuals with special needs and their mothers at eleven institutions in South India. Data were collected based on the questionnaire given to the mothers and dental examination carried out on the children. The nutritive and non-nutritive oral habits were obtained from the reports of the mothers. Clinical examination recorded the following: Class I, Class II, Class III, anterior crowding, anterior spacing, deep bite, open bite, and anterior cross bite. Statistical analyses of data were performed using Chi-square test. Results: Results at the end of the study revealed anterior crowding in 27.37% of the total sample size, deep bite in 20.5%, Class I in 14.34%, anterior spacing in 12.9%, Class II in 9.95%, Class III in 5.33%, anterior cross bite in 4.98% and open bite in 4.62%. Conclusion: The prevalence of malocclusion in individuals with special needs is associated with the type of disability and it is more in males than females. Mentally disabled individuals had higher frequencies of all types the malocclusion. Prevalence of anterior crowding was higher compared to other types of malocclusion followed by deep bite.

  3. Radiographic cephalometric study using Ricketts analysis for dentoskeletal patterns evaluation of patients having class II, division I malocclusion treated during mixed dentition period; Estudo cefalometrico radiografico empregando a analise de Ricketts na avaliacao dos padroes dento-faciais de pacientes portadores de maloclusao de classe II, divisao I, tratados durante a fase de denticao mista

    Energy Technology Data Exchange (ETDEWEB)

    Motta e Albuquerque, Carmen da

    1988-12-31

    In the specialized literature about the use of extra oral forces in the treatment of the Class II malocclusion one can observe that it has been used more and more, with the objective of achieving teeth improvement and bone as well. It is proposed to evaluate the extent of the orthodontic/orthopedic modifications and their influence in the facial pattern of patients with those malocclusions, treated during the mixed dentition period. A sample of 32 patients of both sexes, leucoderms, with Class II, division I malocclusion, between 7 and 14 years old, were studied employing a cephalometric radiographic method for evaluation. (author). 94 refs., 11 figs., 15 tabs.

  4. Comparative study cephalometric-radiographic of the cephalo-facio-dental patterns in patients who presented normal occlusion and class II, division 1 malocclusions, considering variations of the FMA angle

    International Nuclear Information System (INIS)

    The proposal of this job was to study cephalo-facio-dental patterns comparatively in patients who presented normal occlusion and Class II, division 1 malocclusions, considering variations of the FMA angle. The sample was composed of seventy-five telerradiographies on lateral pattern, obtained from Brazilian teenagers students of the ABC area (Santo Andre, Sao Bernardo do Campo and Sao Caetano do Sul), 'whites', who presented normal occlusion and Class II, division 1 malocclusions, without previous orthodontic treatment: their parents were Brazilian. (author)

  5. Effective and Efficient Herbst Appliance Therapy for Skeletal Class II Malocclusion Patient with a Low Degree of Collaboration with the Orthodontic Treatment

    Directory of Open Access Journals (Sweden)

    Bernardo Quiroga Souki

    2015-01-01

    Full Text Available The current concept for effective and efficient treatment of skeletal Class II malocclusion prescribes that interceptive approach should be delivered during the pubertal growth stage. However, psychosocial issues and a greater risk of dental trauma are also factors that should be addressed when considering early Class II therapy. This paper reports a case of a patient that sought orthodontic treatment due to aesthetic discomfort with the incisors’ protrusion. Two previous treatments failed because patient’s collaboration with removable appliances was inadequate. Given his history of no collaboration and because the patient was in the prepubertal stage, it was decided to try a different approach in the third attempt of treatment. Traumatic injury protective devices were used during the prepubertal stage and followed by Herbst appliance and fixed multibrackets therapy during the pubertal stage, resulting in an adequate outcome and long-term stability.

  6. CBCT evaluation of the upper airway morphological changes in growing patients of class II division 1 malocclusion with mandibular retrusion using twin block appliance: a comparative research.

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    Liang Li

    Full Text Available OBJECTIVE: The purpose of this study was to evaluate the morphological changes of upper airway after Twin Block (TB treatment in growing patients with Class II division 1 malocclusion and mandibular retrusion compared with untreated Class II patients by cone beam computed tomography (CBCT. MATERIALS AND METHODS: Thirty growing patients who have completed TB treatment were recruited into TB group. The control group (n = 30 was selected from the patients with the same diagnosis and without TB treatment. CBCT scans of the pre-treatment (T1 and post-treatment (T2 data of TB group and control data were collected. After three-dimensional (3D reconstruction and registration of T1 and T2 data, the morphological changes of upper airway during TB treatment were measured. The statistical differences between T1 and T2 data of TB group as well as T2 and control data were accessed by t-test. RESULTS: During the TB treatment, the mandible moved advanced by 3.52 ± 2.14 mm in the horizontal direction and 3.77 ± 2.10 mm in the vertical direction. The hyoid bone was in a more forward and inferior place. The upper airway showed a significant enlargement in nasopharynx, oropharynx and hypopharynx. In addition, the nasopharynx turned more circular, and the oropharynx became more elliptic in transverse shape. However, the transverse shape of the hypopharynx showed no significant difference. After comparison between T2 and control data, only the horizontal movement of the hyoid bone, the volumetric expansion of the oropharynx and hypopharynx, and changes of the oropharyngeal transverse shape showed significant difference. CONCLUSION: Compared to the untreated Class II patients, the upper airway of growing patients with Class II division 1 malocclusion and mandibular retrusion showed a significant enlargement in the oropharynx and hypopharynx as well as a more elliptic transverse shape in the oropharynx, and the hyoid bone moved to an anterior position after TB

  7. 安氏Ⅰ、Ⅱ类错(牙合)畸形舌体与舌骨的影像学表现%Study on tongue and hyoid bone position in Class Ⅰ and Classmalocclusion

    Institute of Scientific and Technical Information of China (English)

    庄巧红; 胡心怡; 高文岚; 肖轺穆; 邓梦昭; 潘晓岗

    2012-01-01

    目的:研究安氏Ⅰ类和安氏Ⅱ类错(牙合)畸形舌体、舌骨位置的差异,探讨舌及舌骨位置与错(牙合)畸形矢状向牙和颌骨位置改变的关系.方法:选择未经治疗的安氏Ⅰ类错(牙合)畸形患者15例(平均年龄13.7岁,男7例,女8例);安氏Ⅱ类错(牙合)畸形患者15例(平均年龄14.3岁,男4例,女11例),拍摄头颅定位侧位片,进行头影测量分析.测量舌体位置(U'O、S'O、ET、HET和Ltg1-7),舌骨位置(C3H、H'H、GoGn-H)以及牙、颌骨的矢状向指标.采用SPSS15.0软件包对2组测量值进行成组t检验,并分析两组测量值之间的相关性.结果:安氏Ⅱ类错(牙合)畸形舌体高度大于安氏Ⅰ类,差异有显著性(P<0.05).舌体长度、姿势位及舌骨位置均无显著差异.安氏Ⅰ类错(牙合)组,HET与CoA显著相关(r=0.691,P<0.01),S'O分别与CoA、U1L1显著相关(r=0.689,P<0.01;r=-0.673,P<0.01),C3H与ANB相关(r=-0.519,P<0.05).安氏Ⅱ类错(牙合)组,HET分别与CoA、CoGn显著相关(r=-0.528,P<0.05;r=-0.569,P<0.05),S'O分别与CoA、CoGn、GoGn及GoGnSN显著相关(r=-0.551,P<0.05;r=0.535,P<0.05;r=0.626,P<0.05;r=0.531,P<0.05),GoGnH分别与MP、OP显著相关(r=0.540,P<0.05;r=0.617,P<0.05).结论:安氏Ⅰ类与安氏Ⅱ类错(牙合)畸形患者的舌体高度存在显著差异,舌体高度及舌体垂直位置和上颌长度相关.舌体及舌骨的位置在安氏Ⅰ类错(牙合)畸形和安氏Ⅱ类错(牙合)畸形的矢状向颌骨及牙位置上存在不同的相关关系.%PURPOSE: To compare the differences between the position of the tongue and hyoid bone in Class I and Class II malocclusion, and explore their relation with sagittal denial and skeletal changes in two types of malocclusion. METHODS: Thirty untreated patients with malocclusion (Class I 15,average age 13.7 years; Class II 15, average age 14.3 years)were included in the study. Cephalometric analysis was carried out to measure the tongue and hyoid bone

  8. Alternative treatment for open bite Class III malocclusion in a child with Williams-Beuren syndrome

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    Giovanni Modesto Vieira

    2015-02-01

    Full Text Available Williams-Beuren syndrome (WBS is a rare genetic condition that affects approximately 1 in every 20,000 - 50,000 live births. WBS children have specific skeletal deformities, dental malformations and rare lingual muscle dysfunction. The need for orthodontic and orthognathic therapy has arisen and has been considered a real clinical challenge even for experienced professionals, once it requires a complex and individualized treatment plan. This study reports a case of orthopedic expansion of the maxilla, in which a modified facial mask was used for protraction of the maxillary complex associated with clockwise rotation of the maxilla. In addition, special considerations about treatment time and orthopedic outcomes are discussed.

  9. Uso do aparelho de Thurow no tratamento da má oclusão esquelética de Classe II The use of Thurow's appliance in the treatment of skeletal class II malocclusion

    Directory of Open Access Journals (Sweden)

    Maíra Massuia de Souza

    2005-08-01

    Full Text Available O objetivo deste trabalho foi realizar uma revisão de literatura em relação ao tratamento da má oclusão esquelética de Classe II com a utilização do splint maxilar removível associado à tração alta, realçando sua influência no crescimento ósseo e seus benefícios. Através do relato do caso clínico será mostrada a confecção e os efeitos do aparelho de Thurow quando utilizado no período da dentadura mista, para a correção da Classe II esqueléticaThe aim of this study was to review the literature concerning the treatment of Class II malocclusion with removable maxillary splint associated to the high traction, enhancing its influence in the bony growth and its benefits. This clinical case will show the fabrication and the effects of Thurow's appliance, when it's used in the mixed dentition for the correction skeletal class II malocclusion.

  10. IMPLICATIONS OF THE OVERJET VALUE AND OF THE MALOCCLUSION CLASS IN PREDICTING THE DYNAMICS OF DENTO-PERIODONTAL TRAUMATISMS IN PRE-SCHOOL CHILDREN

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    R. Cioată

    2012-12-01

    Full Text Available The scope of the study is to evaluate the influence exercised by the overjet values, associated to a class of malocclusions, in the characterization and prediction of dento-periodontal traumatic events in pre-school children. Materials and method. The study was developed on a group of 672 children with chronological ages ranging between 3-7 years, coming from urban and rural areas of the Iaşi district. The presence of dento-periodontal traumatisms, the overjet and the canine class were followed. Data processing was made with the STATISTICA program. Results and discussion. The prevalence of dentoperiodontal traumatisms in the experimental group was of 19.64%. The urban environment to which the childern belonged was moderately associated with the presence of traumatisms, the prevalence of which was significantly higher (40.19% in children with overjet values exceeding 6 mm. Canine class II was significantly associated with the presence of traumatisms (54.55%, the children without traumatisms showing mainly canine class I (62.96%. Conclusions. The overjet value may represent an important factor for predicting the occurrence of dentoperiodontal traumatisms in temporary dentition.

  11. Malocclusion and Its Relation to Headform

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    Rio Sofwanhadi

    2015-11-01

    Full Text Available A study was carried out to get impression on the relationship of headroom, type of malocclusion, and facial profile on groups of male and female students of Faculty of Medicine, the University of Indonesia, Jakarta. THe result showed that the biggest part of either male or female students had hyperbrachycephaly - brachycephaly head index, malocclusion typer III and retrognathic - orthognathic facial profile on male students and orthognathic - retrognathic facial profile on female students.

  12. Videofluoroscopy of the oral phase of swallowing in eight to twelve years old children with dental malocclusion.

    Science.gov (United States)

    Junqueira, Patricia; Costa, Milton Melciades

    2013-11-01

    The objective of this study was to describe the oral phase of swallowing in individuals with dental malocclusion and to generate data that would contribute to the rehabilitation of those patients. The study was based on the evaluation of the swallowing system through videofluoroscopy on thirty-four children of both genders, aged eight to twelve years old who present with Angle Class II and III dental malocclusions. Thirteen children of similar age and gender presenting normal dental occlusion formed the control group. The results indicated that the oral phase of swallowing is different between individuals with normal occlusion and malocclusion. Dental occlusion types Angle Class II and III did not present a swallowing pattern, independently of the amount of liquid ingested. The swallowing appeared effective in the oral phase of individuals with dental malocclusion, even though adaptations were identified. The outcome, in the absence of a single pattern and the efficiency of the adapted swallowing demonstrates, first a need for additional research investigating orofacial myofunctional treatment for patients with malocclusion and second how such analyses should focus on contributing positively to the rehabilitation of these patients.

  13. Study in the mesiodistal width of teeth and Bolton index of Angle's Classmalocclusion patient%安氏Ⅱ类错(牙合)畸形牙冠宽度和Bolton指数测量分析

    Institute of Scientific and Technical Information of China (English)

    陈沐; 李正明; 刘学; 冯志才; 黄永谦

    2013-01-01

    目的 分析安氏Ⅱ类错(牙合)畸形患者的Bolton指数,并探讨其上下牙量关系对其症状及疗效的影响.方法 以安氏Ⅱ类1分类和2分类错(牙合)畸形患者各100例为研究对象,分别进行牙冠宽度测量并计算Bolton指数.结果 安氏Ⅱ类1分类错(牙合)的前牙宽度比安氏Ⅱ类2分类错(牙合)大,差异有统计学意义.Bolton指数不调的基本分布情况为:指数正常组>指数过小组>指数过大组.Bolton指数前牙比和全牙比呈现安氏Ⅱ类2分类错(牙合)>安氏Ⅱ类1分类错(牙合),但其差异无统计学意义.结论 安氏Ⅱ类错(牙合)中有约50%病例Bolton指数在正常值范围之外,存在上下牙量不协调.%Objective To investigate Bolton index of Angle's Classmalocclusion patients and to study the influences of an upper and lower tooth size relations on the symptoms and curative effect.Methods 100 casts of Class Ⅱ division 1 and Class Ⅱ division 2 malocclusion were selected,respectively.Mesiodistal width of teeth was measured and Bolton Index was calculated.Results The results indicated that the sum of mesiodistal width of maxillary anterior teeth in Class Ⅱ division 1 malocclusion were larger than that in Class Ⅱ division 2 malocclusion with significant differentce.The ratio of Bolton Index among the normal ranges was larger than that among lower ranges and among higher ranges.Bolton Index of Class Ⅱ division 2 malocclusion was larger than that Class Ⅱ division 1 malocclusion without ignificant differentce.Conclusion More than half of all patients have the Bolton ratio outside the normal ranges and the maxillary and mandibular teeth size discrepancy.

  14. AngleⅡ类错患者髁突表面积与体积三维重建测量%Three-dimensional reconstruction study of condyle volume and surface area in Angle′s class II malocclusion patients

    Institute of Scientific and Technical Information of China (English)

    杨珊; 何科; 任嫒姝; 戴红卫

    2012-01-01

    目的 运用锥束CT(CBCT)测量AngleⅡ类错患者髁突的表面积和体积,探讨AngleⅡ类错患者髁突形态大小的特点.方法 选择该院正畸科就诊患者中年龄为20~28岁的AngleⅡ类错患者66例(男33例,女33例)进行CBCT检查,运用Mimics10.0软件对左、右两侧髁突进行三维重建,测量其表面积与体积,计算髁突形态指数.并与AngleⅠ类错患者髁突大小进行比较.结果 AngleⅡ类错患者男性的髁突体积与表面积均大于女性(P0.05).结论 AngleⅡ类错患者的髁突大小与性别和髁突位置有关.且AngleⅡ类错患者髁突小于AngleⅠ类错患者.%Objective To measure the condyle volume and surface area in the patients with Angle s classmalocclusion by cone beam CT(CBCT) and to study the characteristics of mandibular condylar size. Methods 66 young patients with Angle's classmalocclusion were chosen from our hospital(aged 20 - 28 years;33 males and 33 females). All patients received CBCT examina tion,the CT slice used the Mimics 10. 0 software for three dimensional reconstruction of the condyle to measure the condyle vol ume,surface area and shape index(ratio of volume and surface area). The comparison between classmalocclusion patients and classmalocclusion patients was performed. Results The condyle volume and surface area in male patients with class Ⅱ maloc elusion were significantly greater than those in female patients(P0. 05). Conclusion The condyle volume is related to the genders and condyle position. The size of man dibular condyle in classmalocclusion patients is smaller than classmalocclusion patients.

  15. Symmetric analysis of bilateral condylar movement traces before and after orthognathic surgery for skeletal Classmalocclusion%骨性Ⅲ类正颌手术前后髁突运动对称性分析

    Institute of Scientific and Technical Information of China (English)

    孟菲; 高晓辉; 杨晓江; 廖囡囡; 温黎明

    2012-01-01

    目的 测量骨性Ⅲ类错患者正颌手术前后髁突下颌边缘运动的对称性,探讨成人骨性Ⅲ类错患者正颌术后髁突运动功能的恢复情况.方法 选取成人骨性Ⅲ类错患者15人,分别在术前、术后6个月、术后9个月,运用下颌三维超声定位技术.ARCUSdigma系统对最大张口和前伸运动时两侧髁突对称性进行分析.结果 下颌最大张口和前伸运动时,骨性Ⅲ类患者术前和术后6个月组的双侧髁突运动轨迹在冠状向上不一致,差异有统计学意义(P0.05).结论 成人骨性Ⅲ类错患者正颌术后9个月时下颌功能性运动逐渐趋于正常,提示应将正颌手术后正畸时间保持在9个月以上.%Objective To investigate the condylar movement traces before and after orthognathic surgery for skeletal Class IH malocclusion. Methods In 15 skeletal Class III adult malocclusion patients , the condylar movements were recorded during maximum open -closing and protrusive movement of the mandible before surgery , and six and nine months after surgery by using ARCUS digma mandibular moving track analysis system . Results The bilateral condylar movements in the coronal plane showed significant differences in maximum open -closing movement before surgery and the sixth month after surgery (P < 0. 05 ) . The condylar movement exhibited normal nine months after surgery . Conclusion The functional movements of the mandible became stable ninth months after surgery . Therefore, the orthodontic treatment time for over nine months were suggested after orthognathic surgery .

  16. A benefit-risk assessment of class III antiarrhythmic agents

    DEFF Research Database (Denmark)

    Elming, Hanne; Brendorp, Bente; Pehrson, Steen;

    2004-01-01

    relief. Since many patients experience a decrease in physical performance as well as a diminished quality of life during arrhythmia there is still a need for antiarrhythmic drug therapy. The development of new antiarrhythmic agents has changed the focus from class I to class III agents since it became...... evident that with class I drug therapy the prevalence of mortality is considerably higher. This review focuses on the benefits and risks of known and newer class III antiarrhythmic agents. The benefits discussed include the ability to maintain sinus rhythm in persistent atrial fibrillation patients, and...... reducing the need for implantable cardioverter defibrillator shock/antitachycardia therapy, since no class III antiarrhythmic agents have proven survival benefit. The risks discussed mainly focus on pro-arrhythmia as torsade de pointes ventricular tachycardia....

  17. The characteristics of the arch form of skeletal Classmalocclusion%骨性Ⅲ类错(牙合)患者牙弓形态特征分析

    Institute of Scientific and Technical Information of China (English)

    孙留振; 范向飞; 肖丹娜; 高辉

    2012-01-01

    Objective To study the characteristics of the arch form of skeletal Class ffl malocclusion and provide references for diagnosis and treatment plan. Methods 7 indexes in dental casts of 47 patients with skeletal Class ffl malocclusion and 50 individuals with normal occlusion were measured respectively. And differences between corresponding upper and lower measurements were calculated. Independent samples (-test was employed for comparing between the two groups by SPSS 17.0. Results Compared with normal occlusion sample, Class 0 malocclusion group had smaller anterior segment lengths and larger canine angles (P<0.05). Differences between upper and lower first pre-molar widths were larger in males with skeletal Class Iff malocclusion. And differences between upper and lower anterior segment lengths were smaller in males with skeletal Class M malocclusion (P<0.05). Conclusion Arch widths of patients with skeletal Class ID malocclusion are basically normal. The lengths of anterior segment are smaller and the anterior arch forms are straighter.%目的 探讨骨性Ⅲ类错(牙合)患者的牙弓形态特征,为临床诊断和治疗提供理论依据.方法 选择骨性Ⅲ类错(牙合)患者47例为实验组,个别正常(牙合)50例为对照组,在石膏模型上测量与牙弓形态特征相关的7个项目,计算上下颌相应测量项目之差,采用SPSS 17.0软件对数据进行独立样本t检验.结果 实验组的上颌牙弓前段长度小于对照组,上颌尖牙角大于对照组(P<05);男性实验组的上下颌第一前磨牙间宽度之差大于对照组,牙弓前段长度之差小于对照组(P<0.05).结论 骨性Ⅲ类错(牙合)患者的牙弓宽度基本正常,但牙弓前段长度不足,且前段弓形较为平直.

  18. 骨性Ⅲ类错(牙合)下前牙区牙槽骨形态的锥形束CT分析%Preliminary cone-beam computed tomography study of alveolar bone of anterior mandible in adults with skeletal Classmalocclusion

    Institute of Scientific and Technical Information of China (English)

    张莉; 王博; 房兵

    2012-01-01

    PURPOSE: To evaluate the thickness of alveolar bone of mandibular anterior teeth in adults with skeletal Classmalocclusion by a method of detailed cone-beam computed tomography (CBCT) images. METHODS: The subjects were 45 untreated patients with skeletal Class III malocclusion and 45 untreated patients with skeletal Class I malocclusion. They were divided into 2 groups: skeletal Class III and skeletal Class I patients. Tomography was carried out using KODAK9000C 3D volume scanner before orthodontic treatment. Three-dimensional CBCT software (Kodak dental imaging software 3D module v 2.4, Eastman Kodak Company, French) was used to measure the labial, lingual and total thickness of alveolar bone of mandibular anterior teeth by 6 reference points. The thicknesses of alveolar bone of both groups were measured along an axial plane at mandibular anterior teeth root apex levels from a CBCT image. Differences between the 2 groups were analyzed by using group t test with SPSS16.0 software package. RESULTS: The thickness of the alveolar bone of mandibular anterior teeth was greater in the skeletal Class I than the skeletal Class III subjects. There was significant (P<0.05) difference between the two groups. CONCLUSIONS: The thickness of alveolar bone of mandibular anterior segment was obviously thinner in the skeletal Class III malocclusion than that in Class I. More attention was recommended to be paid in skeletal Glass HI patient. Supported by National Natural Science of China (10972142), Research Fund of Science and Technology Commission of Shanghai Municipality (08411961600) and Program for Innovative Research Team of Shanghai Municipal Education Commission.%目的:应用锥形束CT(cone-beam computed tomography,CBCT)评价骨性Ⅲ类和骨性I类错猞患者下颌切牙区 牙槽骨形态的差异。方法:选取45例恒牙期骨性Ⅲ类错治病例及45例恒牙期骨性I类错骀病例矫治前的CBCT图 像,测量下切牙区

  19. Postura de cabeça nas deformidades dentofaciais classe II e classe III Head posture in the presence of class II and class III dentofacial deformities

    Directory of Open Access Journals (Sweden)

    Marcela Ralin de Carvalho Deda

    2012-04-01

    Full Text Available OBJETIVO: este estudo investiga se existe diferença entre grupos com diferentes deformidades dentofaciais (padrão classe II e classe III e o grupo sem a deformidade em relação à postura de cabeça. MÉTODO: participaram deste estudo, voluntariamente, 25 pacientes (entre 16 e 40 anos. Dez pacientes com diagnóstico de deformidade dentofacial classe II e 15 pacientes com o diagnóstico de classe III esquelética e 15 voluntários sadios, com equivalência em sexo e idade ao grupo de deformidade, formando o grupo controle. Primeiramente foi realizada a inspeção da postura de cabeça. Logo em seguida foi realizada a avaliação postural de cabeça por meio da fotografia postural (fotogrametria. RESULTADOS: não houve diferença significante (p>0,05 entre os grupos em relação à avaliação postural utilizando-se a fotogrametria. Já em relação à avaliação postural pela inspeção clínica, observou-se uma postura anterior de cabeça nos indivíduos com a deformidade dentofacial padrão classe II, comparados ao padrão classe III (p = 0,001 e ao grupo controle (p = 0,001. Foi visto também que o grupo deformidade classe II apresentou um percentual inferior de indivíduos com posição neutra de cabeça comparado ao grupo deformidade classe III (p = 0,008 e ao grupo controle (p = 0,001. CONCLUSÃO: indivíduos com deformidade dentofacial classe II podem apresentar uma anteriorização de cabeça. Não há influência da deformidade no aumento ou na redução do ângulo cabeça-pescoço, analisado por meio da fotogrametria.PURPOSE: this study investigates whether there is a difference in head posture between groups with different dentofacial deformities (class II and class III and a group with no deformity. METHOD: 25 volunteers aged from 16 to 40 year old took part in the study. Ten patients had a diagnosis of class II dentofacial deformity, 15 had a diagnosis of class III skeletal deformity, and 15 healthy volunteers matched for sex and

  20. Malocclusions in Xia Dynasty in China

    Institute of Scientific and Technical Information of China (English)

    WANG Wei; ZENG Xiang-long; ZHANG Cheng-fei; YANG Yan-qi

    2012-01-01

    Background The prevalence of malocclusion in modern population is higher than that in the excavated samples from the ancient times.Presently,the prevalence of juvenile malocclusion in the early stage of permanent teeth is as high as 72.92% in China.This study aimed to observe and evaluate the prevalence and severity of malocclusions in a sample of Xia Dynasty in China,and to compare these findings with the modern Chinese population.Methods The material consisted of 38 male and 18 female protohistoric skulls of Xia Dynasty 4000 years ago.Of 86 dental arches,29 cases had the jaw relationships.Tooth crowding,diastema,individual tooth malposition and malocclusion were studied.Results Of the samples,23.3% showed tooth alignment problems including crowding (8.1%),diastema (9.3%),and individual tooth malposition (5.8%).The prevalence of malocclusion was 27.6%,mainly presented as Angle Class Ⅰ.Conclusions It is indicated that over thousands of years from Neolithic Age (6000-7000 years ago) to Xia Dynasty (4000 years ago),the prevalence of malocclusion did not change significantly.The prevalence of malocclusion of Xia Dynasty samples was much lower than that of modern population.

  1. [Limiting factors in the class III camouflage treatment: a potential protocol].

    Science.gov (United States)

    Chaques Asensi, José

    2016-06-01

    The Class III skeletal malocclusion has been traditionally treated with a combined approach of orthodontics and orthognathic surgery or with a strategy of orthodontic camouflage. Some severe cases can be identified as ideal candidates for a surgical treatment whereas some others can be handled with orthodontics alone, with a reasonable expectation of an acceptable result. However, the problem remains for the borderline patient. In fact, limited information is available in the literature regarding the identification of the factors that can help in establishing the limits for one treatment modality or the other. Furthermore, the quantification of some of these factors, for practical purposes, is practically missing or very seldom suggested. Therefore, the decision making process remains a subjective reflection based on the "good clinical sense" of the orthodontist or just reduced to an "educated guess". In order to add some information, hopefully useful in deciding the most suitable treatment option for the individual patient, we propose a clinical protocol based on four different factors. Namely: the skeletal discrepancy, the occlusal discrepancy, the periodontal condition and facial aesthetics. For each one of these factors several parameters will be evaluated and, for some of them, an attempt to provide some reference numerical values will be made. Finally, clinical examples will be presented to illustrate the concepts discussed and the treatment alternatives, final treatment plan and treatment outcome will be analyzed for each one of them. PMID:27358006

  2. Cephalometric evaluation of class-III patients with chin cap and tongue guard.

    Science.gov (United States)

    Danaie, S M; Salehi, P

    2005-06-01

    The purpose of this study was to determine the effect of chin cap therapy combined with an upper tongue guard in the early treatment of class-III malocclusion on the nasomaxillary complex and mandible. The subjects of this study consisted of 40 patients aged 5-13 years (mean age of 8.5 +/- 2). All of them possessed an anterior cross bite and/or concave profile. The mean force of chin cap was determined to be 200 g on each side for 18 h/day and the mean treatment period was 22 months. The cephalometric analyses including skeletal, dental, and soft tissue analysis were carried out before and after treatment. The analysis of the cephalometric measurements revealed a negative correlation between the combination effects of chin cap therapy upper tongue guard. This effect appeared in the early stages of treatment. It was a case-control study and Wilcoxon test was used for statistical analysis. The comparison of dependent variables revealed that skeletal effects of chin cap therapy were more than dental and soft tissue effects. Changes in the upper and lower pharyngeal spaces were not significant. A reduction of nasolabial angle occurred due to the protrusion of upper incisors. Finally, it was shown that the combination of chin cap and upper tongue guard could be more effective in the early treatment.

  3. Compensation trends of the angulation of first molars:retrospective study of 1 403 malocclusion cases

    Institute of Scientific and Technical Information of China (English)

    Hong Su; Bing Han; Sa Li; Bin Na; Wen Ma; Tian-Min Xu

    2014-01-01

    We investigated the compensatory trends of mesiodistal angulation of first molars in malocclusion cases. We compared differences in the angulation of first molars in different developmental stages, malocclusion classifications and skeletal patterns. The medical records and lateral cephalogrammes of 1 403 malocclusion cases taken before treatment were measured to evaluate compensation of molar angulation in relation to the skeletal jaw. The cases were stratified by age, Angle classification and skeletal patterns. Differences in the mesiodistal angulation of the first molars were compared among the stratifications. We observed three main phenomena. First, angulation of the upper first molar varied significantly with age and tipped most distally in cases aged ,12 years and least distally in cases aged .16 years. The lower first molar did not show such differences. Second, in Angle Class II or skeletal Class II cases, the upper first molar was the most distally tipped, the lower first molar was the most mesially tipped, and opposite angulation compensation was observed in Class III cases. Third, in high-angle cases, the upper and lower first molars were the most distally tipped, and opposite angulation compensation was observed in low-angle cases. These data suggest that the angulation of the molars compensated for various growth patterns and malocclusion types. Hence, awareness of molar angulation compensation would help to adjust occlusal relationships, control anchorage and increase the chances of long-term stability.

  4. Má oclusão Classe I de Angle, com mordida aberta anterior, tratada com extração de dentes permanentes Angle Class I malocclusion, with anterior open bite, treated with extraction of permanent teeth

    Directory of Open Access Journals (Sweden)

    Mírian Aiko Nakane Matsumoto

    2011-02-01

    Full Text Available A mordida aberta é uma anomalia com características distintas que, além da complexidade dos múltiplos fatores etiológicos, traz consequências estéticas e funcionais. Muitas alternativas têm sido utilizadas em seu tratamento, entre elas a grade palatina, forças ortopédicas, ajuste oclusal, camuflagem com ou sem exodontias, mini-implantes ou miniplacas e cirurgia ortognática. O diagnóstico preciso e a determinação da etiologia permitem estabelecer os objetivos e o plano de tratamento ideal para essa má oclusão. O presente relato descreve o tratamento de uma má oclusão Classe I de Angle, com padrão esquelético de Classe II e mordida aberta anterior, realizado em duas fases e que foi apresentado à diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria 2, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.Open bite is an anomaly with distinct characteristics which, in addition to involving complex, multiple etiologic factors, entails aesthetic and functional consequences. Many alternative approaches have been employed to treat open bite, including palatal crib, orthopedic forces, occlusal adjustment, camouflage with or without extractions, mini-implants or mini-plates, and orthognathic surgery. By determining accurate diagnosis and etiology professionals can set the goals and ideal treatment plan for this malocclusion. This report, describing the two stages treatment of a Angle Class I malocclusion with Class II skeletal pattern and anterior open bite, was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO, representative of category 2, as partial fulfillment of the requirements for obtaining the title of BBO Diplomate.

  5. Má oclusão Classe II, divisão 1, de Angle com discrepância ântero-posterior acentuada Angle Class II malocclusion with severe anteroposterior disharmony

    Directory of Open Access Journals (Sweden)

    Jairo Curado de Freitas

    2009-04-01

    Full Text Available A má oclusão Classe II de Angle é caracterizada por uma discrepância dentária ântero-posterior, que pode ou não estar associada a alterações esqueléticas. Além do comprometimento estético, o fato de vir associada a um overjet acentuado faz com que o paciente fique mais exposto a traumas dentários. Este caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria 4, ou seja, uma má oclusão com discrepância ântero-posterior acentuada, Classe II com ANB maior ou igual a 5º, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO. Possui uma característica incomum, que é a ausência congênita de um incisivo inferior.Angle Class II malocclusion is characterized by an anteroposterior dental discrepancy which may or may not be accompanied by skeletal changes. In general, distressed by a significantly compromised facial aspect, patients tend to seek treatment. This case report was submitted to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as part of the board certification process, as representative of Category 4, i.e., a Class II malocclusion with severe anteroposterior discrepancy and ANB Angle equal to or bigger than 5º (ANB > 5º. The case involves an unusual event - the congenital absence of one lower incisor tooth.

  6. 25 CFR 291.5 - Where must the proposal requesting Class III gaming procedures be filed?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Where must the proposal requesting Class III gaming... ECONOMIC ENTERPRISES CLASS III GAMING PROCEDURES § 291.5 Where must the proposal requesting Class III gaming procedures be filed? Any proposal requesting Class III gaming procedures must be filed with...

  7. Malocclusion and articulation disorders in mouth breathing children from public schools in Santa Maria, Rio Grande do Sul

    Directory of Open Access Journals (Sweden)

    Ana Maria Toniolo da Silva

    2008-01-01

    Full Text Available Objective: To verify the occurrence and types of malocclusion and articulation disorders in mouth breathing children at public schools.Methods: An evaluation was made of 219 children of both genders, between 5 and 12 years of age, attending two public schools in the city of Santa Maria, Rio Grande do Sul, Brazil; with 121 mouth breather children being selected for this study. Orthodontic and phonoaudiological evaluation were made to verify the breathing mode and presence or absence of malocclusion and articulation disorders.Results: It was observed that 100% of the mouth breather children presented malocclusion, 49.60% being Angle’s Class II, 48.76% ClassI and 1.65% Class III. It was also verified that 18.2% of the mouth breather children presented articulation disturbance. Conclusion: All mouth breathing children presented some type of malocclusion, the majority being Angle’s Class II, followed by Class I. The articulation disorders most frequently observed was anterior lisping.

  8. Breastfeeding, bottle feeding and risk of malocclusion in mixed and permanent dentitions: a systematic review.

    Science.gov (United States)

    Abreu, Lucas Guimarães; Paiva, Saul Martins; Pordeus, Isabela Almeida; Martins, Carolina Castro

    2016-01-01

    The aim of the present study was to search for scientific evidence concerning the association between breastfeeding and bottle feeding and risk of malocclusion in mixed and permanent dentitions. An electronic search was performed in eight databases up to February 2015. Additionally, a gray literature search and hand searches of the reference lists of the selected studies were also carried out. There were no restrictions on language or on year of publication. The methodology of the included articles was evaluated using the Newcastle Ottawa scale. Out of the 817 identified citations, six studies fulfilled the eligibility criteria and were included in the systematic review. One study showed that children with mixed and permanent dentitions breastfed for more than 6 months presented greater mean protrusion of mandibular incisors and inclination of maxillary incisors compared with those breastfed for less than 6 months or those who were bottle-fed (p bruxism were associated with Class II [OR = 3.14 (1.28 - 7.66)] and Class III [OR = 2.78 (1.21 - 6.36)] malocclusion in children with permanent dentition, while another study showed that an increase in breastfeeding duration was associated with a lower risk of malocclusion in children with both mixed and permanent dentitions (p < 0.001). Three studies did not report any significant association. Risk of bias was high in most selected articles. These findings do not support an association between breastfeeding and bottle feeding and the occurrence of malocclusion in mixed and permanent dentitions. PMID:27050935

  9. Reassessing Pre-market Regulation of Class III Medical Devices

    OpenAIRE

    Zollinger, Geri

    2003-01-01

    Regulation of medical devices has evolved over the past twenty-five years. Initially, Congress created a regime where the safety and efficacy of all medical devices would be reviewed to varying degrees, depending on the risk posed by the device. Class III devices, the most dangerous class of devices, were to each have a safety and efficacy review. To permit new market entrants on similar grounds as those marketing devices prior to the 1976 Amendments, Congress also created a premarket notific...

  10. Do malocclusion and Helkimo Index ≥ 5 correlate with body posture?

    Science.gov (United States)

    Perillo, L; Femminella, B; Farronato, D; Baccetti, T; Contardo, L; Perinetti, G

    2011-04-01

    Whether there are correlations between the stomatognathic system and body posture remains controversial. Here, we have investigated whether malocclusal traits and having a Helkimo Index ≥ 5 show detectable correlations with body-posture alterations in children and young adults. A total of 1178 11- to 19-year-old subjects were divided into four groups: (i) controls; (ii) malocclusion; (iii) Helkimo Index ≥ 5 and (iv) malocclusion + Helkimo Index ≥ 5. Dental occlusion assessment included the following: overbite, overjet, posterior crossbite, scissorbite, mandibular crowding and dental class. Subsequently, body-posture assessments were performed through static analyses of body inclination and trunk asymmetry, and according to the dynamic Fukuda stepping test. Univariate and multivariate statistical analyses were performed. Although at the univariate level both the trunk asymmetry and Fukuda stepping test showed significant differences among the groups, the multivariate level revealed that age and gender were mostly responsible for this. The only significant correlation that was seen was for the malocclusion + Helkimo Index ≥ 5 group: these subjects had a positive (worse) trunk asymmetry and a negative (better) Fukuda stepping test performance. At the further multivariate analyses of each single malocclusal trait ⁄Helkimo Index ≥ 5 (irrespective of the groups), only an increased overbite showed a statistically significant association with a slightly better Fukuda stepping test performance. Given the small number of significant associations seen and their limited entities, this study does not support the existence of clinically relevant correlations for malocclusal traits and Helkimo Index ≥ 5 with body posture in children and young adults.

  11. Recidiva do apinhamento anterossuperior nas más oclusões de Classe I e Classe II tratadas ortodonticamente sem extrações Relapse of maxillary anterior crowding in Class I and Class II malocclusions orthodontically treated without extractions

    Directory of Open Access Journals (Sweden)

    Willian J. G. Guirro

    2011-10-01

    age of 13.06 years, with Class I malocclusion and initial maxillary anterior crowding greater than 3 mm; Group 2, comprised of 19 patients, at a mean age of 12.54 years, with Class II malocclusion, and also with a initial maxillary anterior crowding greater than 3 mm. In the dental casts of pretreatment, posttreatment and postretention phase, the Little's irregularity index, intercanine distance and distance between first and between second premolars, intermolar distance and maxillary arch length were measured. For intragroup comparison among the three times of evaluation, it was used the one-way ANOVA followed by Tukey test. Intergroup comparison was performed by independent t tests. To verify the presence of correlation, the Pearson correlation test was used. RESULTS: It was evidenced greater stability of treatment in Group 2 (Class II, because during the postretention period it was observed a softer relapse of maxillary anterior crowding in Group 2 (0.80mm than in Group 1 (1.67mm. CONCLUSION: It can be concluded that the treatment of maxillary anterior crowding is more stable in Class II malocclusion than in Class I malocclusion.

  12. DETECTION OF Bolton INDEX FOR ANGLE CLASSMALOCCLUSION PATIENTS%安氏Ⅲ类错(牙合)Bolton指数的检测

    Institute of Scientific and Technical Information of China (English)

    白雪雁; 范存晖; 陈秀娟; 杨茜

    2011-01-01

    Objective To study the influence of the upper and lower tooth size on the orthodontic diagnosis and therapy through detection of Bolton index in patients with Angle classmalocclusion and analyze the differences of mesiodistal tooth size between maxillary and mandibular teeth.Methods The Bolton index was measured and analyzed in 100 pretreatment casts of Angle classⅢ patients (male 50, female 50) and compared with normal Bolton index.Results In Angle classⅢ patients, the mean anterior ratio was (79.70± 2.73)% and the mean overall ratio was (92.21 ± 2.3)%, both the ratios were bigger than the normal reference, the differences being significant (u=3.29,3.72;P<0.05).Of the 100 patients, the normal anterior ratio and normal overall ratio within normal limits were 55% and 54%, respectively; the sex differences were not significant (P>0.05).Conclusion Too big Bolton index is likely to be one of the reasons that cause Angle classmalocclusion.Bolton analysis should be regarded as one evidence in the diagnosis and plan-making of orthodontic therapy.%目的 通过对安氏Ⅲ类错(牙合)病人Bolton指数的测量,分析上下颌牙量的差异,探讨上下颌牙量关系对正畸诊断和治疗的影响.方法 选取100例(男50例,女50例)安氏Ⅲ类错(牙合)病人的初始模型,分别测量其BoIton指数,并与正常参考值进行比较.结果 安氏Ⅲ类错(牙合)病人Bolton指数前牙比平均值为(79.70±2.73)%,全牙比平均值为(92.21±2.31)%,均较正常参考值增大,差异有显著性(u=3.29、3.72,P<0.05).100例病人中前牙比和全牙比在正常范围内者分别占55%和54%,男女性别间差异无显著性(P>0.05).结论 安氏Ⅲ类错(牙合)病人Bolton指数过大可能是引起错(牙合)的原因之一,Bolton指数分析应成为诊断和制定正畸治疗计划的依据之一.

  13. Correlação entre a assimetria clínica e a assimetria radiográfica na Classe II, subdivisão Correlation between photographic asymmetry and radiographic asymmetry in patients with Class II subdivision malocclusion

    Directory of Open Access Journals (Sweden)

    Angela Rita Pontes Azevedo

    2004-10-01

    Full Text Available O objetivo deste estudo foi avaliar a correlação entre a assimetria clínica e a assimetria radiográfica nos pacientes com Classe II, subdivisão. A amostra consistiu de 42 indivíduos com má oclusão de Classe II, subdivisão completa, com idade média de 15,21 anos. A assimetria clínica foi avaliada medindo-se a diferença relativa da posição espacial dos pontos do tecido mole entre os lados direito e esquerdo em fotografias frontais. A assimetria radiográfica foi avaliada medindo-se a diferença relativa da posição espacial dos pontos dentários e esqueléticos, entre os lados direito e esquerdo nas dimensões ântero-posterior e transversal nas radiografias submentonianas e póstero-anterior. Posteriormente, o teste de correlação de Pearson foi realizado entre as assimetrias nas fotografias e as assimetrias nas radiografias. Como conclusão observou-se que a correlação entre a assimetria clínica e a assimetria radiográfica foi muito suave.The objective of this study was to evaluate the correlation between clinical asymmetry and radiographic asymmetry in patients with Class II subdivision malocclusion. The sample consisted of 42 individuals with complete Class II subdivision malocclusion, with a mean age of 15.21 years. Photographic asymmetry was assessed by measuring the relative difference in spatial position of soft tissue landmarks between right and left sides in frontal photographs. Radiographic asymmetry was assessed by measuring the relative difference in spatial position of dental and skeletal landmarks between right and left sides in both anteroposterior and transverse dimensions in the submentovertex and in the transverse and vertical dimensions in the postero-anterior radiographs. Pearson's correlation test was performed between the asymmetries in the photographs and the asymmetries in the radiographs. In conclusion was observed that correlation between clinical and radiographic asymmetry was very weak.

  14. J钩配合直丝弓技术矫治安氏Ⅱ1错(牙合)%Straight wire appliance combined with J Hook in the treatmant Angle class Ⅱ division Ⅰ malocclusion

    Institute of Scientific and Technical Information of China (English)

    陈斯军; 浦路明; 李青奕; 陈文静

    2011-01-01

    Objective To investigate the treatment of Angle class Ⅱ division Ⅰ malocclusion with straight wire appliance with J hook. Methods Eighteen Angle class Ⅱ division Ⅰ malocclusion patients were treated with straight wire appliance using high pull headgear J hook towing to close the gap left by extraction, and adjust occlusion. X-ray cephaloraetric photoes were taken before and after treatment. Statistical analysis were carried out with the the Kruskal-Wallis test and paired t tests, and the differences were considered significant when P< 0.05. Results All the eighteen patients were finished with class Ⅰ molar teeth relationship, normal over-bite , normal over-jet and amendatory profile. Conclusions Straight wire appliance with high pull headgear J hook is an effective way to control the anchorage, retract the anterior teeth and improve the profile in the treatment of class Ⅱ' malocclusion.%目的 探讨J钩配合直丝弓技术治疗安氏Ⅱ1错(牙合)的临床效果.方法 选取18例安氏Ⅱ1错(牙合)患者,用直丝弓技术配合J钩口外牵引,关闭拔牙间隙,调整咬合关系,并对患者治疗前后X线头颅侧位片进行测量分析.采用SPSS软件配对t检验进行统计分析.结果 18例患者均取得满意疗效,后牙建立中性关系,前牙覆(牙合),覆盖正常,面型明显改善.结论 J钩配合直丝弓技术矫治安氏Ⅱ1错(牙合)是一种行之有效的方法.

  15. Assessment of divine proportion in the cranial structure of individuals with Angle Class II malocclusion on lateral cephalograms

    OpenAIRE

    Marcos André dos Santos da Silva; Edmundo Médici Filho; Julio Cezar de Melo Castilho; Cássia T. Lopes de Alcântara Gil

    2012-01-01

    INTRODUCTION: The study of the Divine Proportion (Φ = 1.618) began with the Greeks, having as main researchers the mathematician Pythagoras and the sculptor Phidias. In Dentistry, Ricketts (1981-82) was an early to study this issue. OBJECTIVE: This study proposed to evaluate how some cephalometric measures are presented in relation to the Divine Proportion, with the total of 52 proportions, formed by 28 cephalometric landmarks. METHODS: Lateral cephalograms of 40 Class II adults patients...

  16. Class II malocclusion associated with mandibular deficiency and maxillary and mandibular crowding: follow-up evaluation eight years after treatment completion.

    Science.gov (United States)

    Aidar, Luís Antônio de Arruda

    2016-01-01

    This report describes the correction of a clinical case of malocclusion with anteroposterior discrepancy and transverse, sagittal and vertical deficiencies. A nonextraction technique was used to preserve space in the dental arches and control facial growth for the correction of the sagittal skeletal relationship and of overbite. The mechanics adopted efficiently corrected malocclusion: all functional and esthetic goals were achieved, and results remained stable eight years after treatment completion. This case was presented to the Committee of the Brazilian Board of Orthodontics and Facial Orthopedics (BBO) as part of the requirements necessary to obtain the BBO Diploma. PMID:27653270

  17. Surgical-orthodontic correction of a Class III dentofacial deformity

    Directory of Open Access Journals (Sweden)

    Raghu Devanna

    2010-01-01

    Full Text Available This case report describes the surgical-orthodontic treatment of a 26-year-old post-pubertal male patient with a Class III dentofacial deformity. In the pre-surgical orthodontic phase of treatment, a reverse overjet of 5.5 mm was created and arch compatibility was obtained. A mandibualr set back with BSSO was performed during surgery to restore ideal overjet, overbite, occlusion and optimal esthetics. After 1 year of treatment, the results remained stable.

  18. The characteristics of the anterior arch form of skeletal Classmalocclusion%骨性Ⅲ类错(牙合)畸形患者前牙弓形态的特征分析

    Institute of Scientific and Technical Information of China (English)

    田静; 高辉; 刘颖; 孙留振; 肖丹娜

    2013-01-01

    Objective To study the characteristics of the anterior dental arch form of skeletal Classmaloc-clusion and provide references for diagnosis and treatment plan. Methods Experimental group consists 52 cases of skeletal Classmalocclusion and control group consists 63 cases of individual normal occlusion. Cone beam com-puted tomography(CBCT) scans of samples were taken and were used to measure with anterior dental arch of 9 measurements through Mimics 10.01. Results Compared with control group, maxillary anterior segments of the den-tal arch widths and depths have the tendency of decrease, maxillary anterior segments of the dental arch angles are smaller in skeletal Classmalocclusion. Mandibular anterior dental arch are similar in two groups about widths, depths and angles. Differences between maxillary and mandibular canine widths and canine depths are smaller with skeletal Classmalocclusion. And differences between maxillary and mandibular anterior segment angles are also smaller with skeletal Classmalocclusion. Conclusion In skeletal Classmalocclusion, the incoordination performance existed in the anterior dental arch form of maxillary and mandibular. The fullness of anterior dental arch form are inadequate. And the maxillary anterior dental arch widths and depths are insufficient.%  目的探讨骨性Ⅲ类错(牙合)畸形患者前段牙弓的形态特征,为临床诊断和治疗提供理论依据.方法选择骨性Ⅲ类错(牙合)畸形患者52例为实验组,个别正常人63例为对照组,利用锥形束CT扫描颌面部,将扫描后图像导入Mimics 10.01图像处理软件分别测量与前段牙弓形态特征有关的9个测量项目.结果骨性Ⅲ类错(牙合)畸形患者组上颌前段牙弓宽度和深度均有小于个别正常人组的趋势、角度也小于正常(牙合)人;下颌前段牙弓的宽度、深度及角度测量值与正常人差异均无统计学意义.骨性Ⅲ类错(牙合)畸

  19. Tratamento conservador de uma má oclusão Classe I de Angle, com atresia maxilar e apinhamento anterior The conservative treatment of Class I malocclusion with maxillary transverse deficiency and anterior teeth crowding

    Directory of Open Access Journals (Sweden)

    Lincoln I. Nojima

    2011-10-01

    Full Text Available Este artigo relata o tratamento de uma paciente do sexo feminino, com 15 anos de idade, má oclusão Classe I de Angle, severo apinhamento anterossuperior, desvio da linha média superior para o lado esquerdo e atresia maxilar, associada à mordida cruzada posterior. Os procedimentos executados envolveram a expansão maxilar com disjuntor palatino do tipo Haas modificado e montagem de aparelho fixo com sistema Edgewise standard. Foram realizados desgastes proximais nos incisivos e caninos inferiores para o alinhamento anterior, bem como redução da discrepância de Bolton com excesso inferior. Esse caso foi apresentado à diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria livre escolha, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.This article reports the treatment of a 15-years-old female patient, with Class I malocclusion, severe upper anterior crowding, midline deviation to the left side and maxillary transverse deficiency associated with posterior crossbite. The procedures involved rapid maxillary expansion with modified Haas appliance and the use of Edgewise standard system. Proximal wear were performed to the alignment of mandibular incisors, as well as to reduce the Bolton discrepancy. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO, representative of category free, as partial fulfillment of the requirements for obtaining the title of BBO Diplomate.

  20. Can Dermatoglyphics Be Used as a Marker for Predicting Future Malocclusions?

    Science.gov (United States)

    Eslami, Neda; Jahanbin, Arezoo; Ezzati, Atefeh; Banihashemi, Elham; Kianifar, Hamidreza

    2016-01-01

    Introduction Dermal ridges and craniofacial structures form from the same embryonic tissues during the same embryonic period. Thus, this might indicate a possible association between dermatoglyphics and facial skeletal disorders, such as malocclusions. Early diagnosis of skeletal malocclusions sometimes can prevent future surgical procedures. The aim of this study was to compare the dermatoglyphic characteristics of different malocclusions. Methods In this cross-sectional study, 323 patients who were referred to Orthodontic Department of Mashhad Dental School were recruited. The participants were classified into three groups according to Angle’s classification, i.e., Skeletal Class 1 (n = 163), Skeletal Class 2 (n = 111), and Skeletal Class 3 (n = 49). For all participants, we recorded the total ridge counts of each finger (TRC), atd angles, a–b ridge counts, and types of fingerprint patterns. Right- and left-hand asymmetry scores were calculated. The chi-squared test was used to compare the dissimilarity of the types of patterns for each finger. Asymmetry of other parameters was analyzed statistically using the ANOVA or Kruskal-Wallis tests. P-values greater than 0.05 were considered to be significant. Results A significant difference was determined between Class I and Class III patients in terms of left a–b ridge count (p=0.049). Loop was the most frequent pattern in the three groups, whereas the arch pattern occurred with the lowest frequency. No significant difference was found in the other parameters that were studied. Conclusion Although there were some slight differences in dermatoglyphic peculiarities of different skeletal malocclusions, most of the palm and fingerprint characteristics failed to indicate any significant differences. PMID:27054000

  1. 拔除智齿矫治成人Ⅲ类骨性错(牙合)1例%Treatment for adult skeletal classmalocclusion by the extraction of the 4 third molars: A case report

    Institute of Scientific and Technical Information of China (English)

    郭丛丛; 包柏成

    2012-01-01

    通过拔除第三磨牙,利用第二磨牙远中与上颌结节后缘/下领升支前缘之间的剩余间隙,最终解除了上牙弓的Ⅱ度拥挤及上下牙弓矢状关系的不调.%By extraction of the 4 third molars, the spaces from the posterior dental arch were available to relieve moderate maxillary crowding and correct Class HI malocclusion, effective treatment was carried out in 1 ease.

  2. 安氏Ⅲ类错(牙合)畸形患者翼外肌MRI研究%Magnetic resonance imaging assessment of the lateral pterygoid muscle in Classmalocclusion subjects

    Institute of Scientific and Technical Information of China (English)

    刘月华; 杨晓江; 高晓辉; 李湲

    2012-01-01

    Objective To analyze the relationship between Classmalocclusion and pathological changes in temporomandibular joint (TMJ) structures using magnetic resenonce imaging (MRI).Methods Twenty-four Classmalocclusion adult patients and 10 normal control cases were included in the study.The characteristics of lateral pertygoid muscle ( LPM ) in the sample group and the control group were assessed.Results More pathological changes of LPM were found in Classmalocclusion adult patients (36 TMJ).The changes included hypertrophy,atrophy and contracture.And there was no relation between the pathological changes of LPM and the symptom of temporomandibular disorders (TMD). Conclusions The frequency of pathological changes of LPM was greater in patients with Classmalocclusion than in the control group.%目的 通过MRI观察安氏Ⅲ类错(牙合)畸形患者翼外肌结构,探讨Ⅲ类错(牙合)畸形导致颞下颌关节紊乱病的潜在危险性.方法利用MRI对24例安氏Ⅲ类错(牙合)畸形患者(Ⅲ类错(牙合)组)和10名健康对照者(健康对照组)进行翼外肌成像研究.观察两组翼外肌病理结构及Ⅲ类错(牙合)组病理结构与颞下颌关节紊乱病体征的关系.结果Ⅲ类错(牙合)组翼外肌存在肌肉肥大、挛缩和萎缩等病理改变(36侧),并与健康对照组翼外肌病理改变(2侧)的差异有统计学意义(P<0.01).安氏Ⅲ类错(牙合)畸形患者有翼外肌的病理改变,但多不伴颞下颌关节紊乱病的临床症状.结论安氏Ⅲ类错(牙合)畸形比正常(牙合)可更多地引起翼外肌的病理改变,有发生颞下颌关节紊乱病的潜在危险.

  3. Assessment of divine proportion in the cranial structure of individuals with Angle Class II malocclusion on lateral cephalograms

    Directory of Open Access Journals (Sweden)

    Marcos André dos Santos da Silva

    2012-06-01

    Full Text Available INTRODUCTION: The study of the Divine Proportion (Φ = 1.618 began with the Greeks, having as main researchers the mathematician Pythagoras and the sculptor Phidias. In Dentistry, Ricketts (1981-82 was an early to study this issue. OBJECTIVE: This study proposed to evaluate how some cephalometric measures are presented in relation to the Divine Proportion, with the total of 52 proportions, formed by 28 cephalometric landmarks. METHODS: Lateral cephalograms of 40 Class II adults patients aging from 17 to 45 years (13 male and 27 female were evaluated. The linear distances between the landmarks were measured using Radiocef Studio software. RESULTS: After statistical analysis, the data shown an average of 65,48% in the Divine Proportion, 17,5% in the relation Ans-Op/V1S-DM16 and 97,5% in the relations Na-Me/Na-PoNa e Na-PoNa/Na-Gn. CONCLUSION: Among all cephalometric measurements investigated, the lower facial third and the dental arches showed the smallest percentages of Divine Proportion.

  4. The Use of Invisalign® System in the Management of the Orthodontic Treatment before and after Class III Surgical Approach

    Directory of Open Access Journals (Sweden)

    Renato Pagani

    2016-01-01

    Full Text Available The approach to skeletal dysmorphisms in the maxillofacial area usually requires an orthodontic treatment by means of fixed appliances, both before and after the surgical phase. Since its introduction, Invisalign system has become a popular treatment choice for the clinicians because of the aesthetics and comfort of the removable clear aligners compared with the traditional appliances. Therefore, the aim of the present report was to illustrate the management of a malocclusion by means of Invisalign system associated with the traditional surgical technique. The present paper shows a case of a 23-year-old male patient characterized by a Class III malocclusion with lateral deviation of the mandible to the left side and cross-bite on teeth 2.2, 2.3, and 2.4. Invisalign system was used during the pre- and postsurgical phases rather than fixed appliances. The posttreatment cephalometric analysis emphasized the stability of the dental and skeletal symmetry corrections, occlusion and functional balance, over a 6-year follow-up. The results achieved at the end of the treatment showed how Invisalign can be effective in the management of the orthodontic phases in orthognathic surgery. The follow-up after 6 years emphasizes the stability of the treatment over time.

  5. The Use of Invisalign® System in the Management of the Orthodontic Treatment before and after Class III Surgical Approach

    Science.gov (United States)

    2016-01-01

    The approach to skeletal dysmorphisms in the maxillofacial area usually requires an orthodontic treatment by means of fixed appliances, both before and after the surgical phase. Since its introduction, Invisalign system has become a popular treatment choice for the clinicians because of the aesthetics and comfort of the removable clear aligners compared with the traditional appliances. Therefore, the aim of the present report was to illustrate the management of a malocclusion by means of Invisalign system associated with the traditional surgical technique. The present paper shows a case of a 23-year-old male patient characterized by a Class III malocclusion with lateral deviation of the mandible to the left side and cross-bite on teeth 2.2, 2.3, and 2.4. Invisalign system was used during the pre- and postsurgical phases rather than fixed appliances. The posttreatment cephalometric analysis emphasized the stability of the dental and skeletal symmetry corrections, occlusion and functional balance, over a 6-year follow-up. The results achieved at the end of the treatment showed how Invisalign can be effective in the management of the orthodontic phases in orthognathic surgery. The follow-up after 6 years emphasizes the stability of the treatment over time. PMID:27429811

  6. The Use of Invisalign® System in the Management of the Orthodontic Treatment before and after Class III Surgical Approach.

    Science.gov (United States)

    Pagani, Renato; Signorino, Fabrizio; Poli, Pier Paolo; Manzini, Pietro; Panisi, Irene

    2016-01-01

    The approach to skeletal dysmorphisms in the maxillofacial area usually requires an orthodontic treatment by means of fixed appliances, both before and after the surgical phase. Since its introduction, Invisalign system has become a popular treatment choice for the clinicians because of the aesthetics and comfort of the removable clear aligners compared with the traditional appliances. Therefore, the aim of the present report was to illustrate the management of a malocclusion by means of Invisalign system associated with the traditional surgical technique. The present paper shows a case of a 23-year-old male patient characterized by a Class III malocclusion with lateral deviation of the mandible to the left side and cross-bite on teeth 2.2, 2.3, and 2.4. Invisalign system was used during the pre- and postsurgical phases rather than fixed appliances. The posttreatment cephalometric analysis emphasized the stability of the dental and skeletal symmetry corrections, occlusion and functional balance, over a 6-year follow-up. The results achieved at the end of the treatment showed how Invisalign can be effective in the management of the orthodontic phases in orthognathic surgery. The follow-up after 6 years emphasizes the stability of the treatment over time.

  7. 微种植体支抗在安氏Ⅱ类1分类错牙合中的应用%The Application of Micro-implants Anchorage in Angle Class Ⅱ Division 1 Malocclusion

    Institute of Scientific and Technical Information of China (English)

    王铭蔚

    2012-01-01

    Angle class Ⅱ division 1 malocclusion prevalence is high. The premise of such disease to be successfully treated is the perfect anchorage control. Mini-implants anchorage provides stable anchorage effects for the orthodontic treatment, which is recognized and accepted by the majority of physicians. In practical application process, how to optimize the use of micro-implants to treatment of Angle class Ⅱ division 1 malocclusion is one of the difficulties in orthodontic.%安氏Ⅱ类1分类错牙合畸形患病率较高,正确的支抗设计和良好的支抗控制是这类错牙合获得成功矫治的前提.近年来,微种植体支抗由于为正畸治疗中提供稳定支抗效果而逐渐被广大医师认识和接受.在实际应用过程中,如何优化使用微种植体治疗安氏Ⅱ类1分类错牙合是当今正畸治疗的难点之一.

  8. Vertical control in the Class III compensatory treatment

    Directory of Open Access Journals (Sweden)

    Márcio Costa Sobral

    2013-04-01

    Full Text Available INTRODUCTION: Compensatory orthodontic treatment, or simply orthodontic camouflage, consists in an important alternative to orthognathic surgery in the resolution of skeletal discrepancies in adult patients. It is important to point that, to be successfully performed, diagnosis must be detailed, to evaluate, specifically, dental and facial features, as well as the limitations imposed by the magnitude of the discrepancy. The main complaint, patient's treatment expectation, periodontal limits, facial pattern and vertical control are some of the items to be explored in the determination of the viability of a compensatory treatment. Hyperdivergent patients who carry a Class III skeletal discrepancy, associated with a vertical facial pattern, with the presence or tendency to anterior open bite, deserve special attention. In these cases, an efficient strategy of vertical control must be planned and executed. OBJECTIVE: The present article aims at illustrating the evolution of efficient alternatives of vertical control in hiperdivergent patients, from the use, in the recent past, of extra-oral appliances on the lower dental arch (J-hook, until nowadays, with the advent of skeletal anchorage. But for patients with a more balanced facial pattern, the conventional mechanics with Class III intermaxillary elastics, associated to an accentuated curve of Spee in the upper arch and a reverse Curve of Spee in the lower arch, and vertical elastics in the anterior region, continues to be an excellent alternative, if there is extreme collaboration in using the elastics.

  9. 成人严重骨性Ⅲ类错(牙合)正畸-正颌手术联合矫治临床研究%Study of Orthodontic and Orthognathic Surgical Treatment of severe adult Skeletal ClassMalocclusion

    Institute of Scientific and Technical Information of China (English)

    郑敏谦; 张端强

    2011-01-01

    Objective To study the changes of skeletal and soft tissue after orthodontic and orthognathic surgical treatment in severe adult classmalocclusion. Methods 11 patients with severe skeletal classmalocclusion (male 6, female 5). All the patients were all treated with orthodontic and orthognathic surgery. Lateral cephalometric films taken at the beginning and the end of treatment were analyzed using traditional cephalometric anlaysis. Paired t-test was performed to evaluate the significant treatment change. Results ANB angle was obviously increased(P<0.05) and class Ⅰ facial form was attained. N'-Sn-Pos angle was increased 7.60°(P<0.05) , while S-N'-Si and S-N'-Pos angle were discreased(P<0.05). Soft tissue profile was improved dramatically. Conclusion Severe adult classmalocclusion treated with orthodontic and orthognathic surgery could achieved class Ⅰ skeletal pattern and soft tissue profile could be dramatically improved.%目的 探讨成人严重骨性Ⅲ类牙颌畸形经正畸-正颌手术联合矫治后颌面软硬组织的变化情况.方法 骨性Ⅲ类牙颌畸形病例11例,其中男性6例,女性5例,采用正畸-正颌手术联合矫治.治疗前后拍摄头影测量片,用常规头影测量分析方法进行分析.采用配对t检验分析治疗前后软硬组织测量项目的统计学差异.结果 治疗后ANB角显著增加(P<0.05),达到Ⅰ类骨面型;面凸角N'-Sn-Pos平均增大为7.60°(P<0.05);S-N'-Si角与S-N'-Pos角显著减少(P<0.05).结论 骨性Ⅲ类畸形通过正畸-正颌手术联合治疗达到颌骨的Ⅰ类关系,面部软组织侧貌得到明显改善.

  10. Novel three-dimensional position analysis of the mandibular foramen in patients with skeletal class III mandibular prognathism

    Science.gov (United States)

    Kim, Yeon-Ho; Won, Yu-Jin; Kim, Moon-Key

    2016-01-01

    Purpose To analyze the relative position of the mandibular foramina (MnFs) in patients diagnosed with skeletal class III malocclusion. Materials and Methods Computed tomography (CT) images were collected from 85 patients. The vertical lengths of each anatomic point from the five horizontal planes passing through the MnF were measured at the coronoid process, sigmoid notch, condyle, and the gonion. The distance from the anterior ramus point to the posterior ramus point on the five horizontal planes was designated the anteroposterior horizontal distance of the ramus for each plane. The perpendicular distance from each anterior ramus point to each vertical plane through the MnF was designated the horizontal distance from the anterior ramus to the MnF. The horizontal and vertical positions were examined by regression analysis. Results Regression analysis showed the heights of the coronoid process, sigmoid notch, and condyle for the five horizontal planes were significantly related to the height of the MnF, with the highest significance associated with the MnF-mandibular plane (coefficients of determination (R2): 0.424, 0.597, and 0.604, respectively). The horizontal anteroposterior length of the ramus and the distance from the anterior ramus point to the MnF were significant by regression analysis. Conclusion The relative position of the MnF was significantly related to the vertical heights of the sigmoid notch, coronoid process, and condyle as well as to the horizontal anteroposterior length of the ascending ramus. These findings should be clinically useful for patients with skeletal class III mandibular prognathism. PMID:27358814

  11. 肥胖型儿童安氏Ⅱ类错牙合畸形的相关因素调查%Angel class II malocclusion deformity in obese children and related factors

    Institute of Scientific and Technical Information of China (English)

    程尧; 贾莹

    2016-01-01

    目的:观察肥胖型儿童骨密度的变化、上气道形态的改变及了解肥胖型儿童饮食、睡眠和口腔疾病既往史。研究肥胖与安氏Ⅱ类错牙合畸形发生的相关性。方法对895例11和12岁儿童进行体重指数(BMI)检查。BMI≥23为肥胖组(=170);在剩余725例BMI<23的儿童中,随机抽取170例作为配对正常组,对两组儿童进行骨密度检查和统计上气道软、硬组织形态的相关参数。并通过问卷调查了解儿童饮食睡眠和口腔疾病既往史。结果肥胖组骨量减少,上气道相对狭窄,口呼吸习惯及牙体早失几率较高。结论肥胖虽然不是安氏Ⅱ类错牙合畸形发生的直接原因,但与安氏Ⅱ类错牙合畸形发生存在间接相关性。%Objective To observe the changes of bone density and morphology of the upper airway in obese children, and understand their diet and sleep situation and past history of oral diseases, so as to inves-tigate the correlation between obesity and Angel class II malocclusion deformity in children. Methods Body mass index (BMI) was examined for 895 children of 11-12 years. The 170 children with BMI ≥ 23 were enrolled into obesity group, 170 children were randomly chosen from the remaining 725 with BMI < 23 into matched normal group. Bone mineral density was determined in both groups, and related parameters of soft and hard tissues in upper respiratory tract were calculated. Questionnaire survey was conducted to understand children's diet, sleep and past history of oral diseases. Results In the obesity group, bone mineral density reduced, upper airway was relatively narrow, the incidence of mouth breathing habit and early tooth loss was relatively high. Conclusions Although obesity does not immediately cause Angel class II malocclusion, it has an indirect correlation with Angel class II malocclusion deformity.

  12. 基于锥体束CT成像的成人安氏Ⅱ类颅颌面骨性结构分析%Skeletal and dental analysis in Class Ⅱ subdivision malocclusions using cone-beam computed tomography

    Institute of Scientific and Technical Information of China (English)

    夏文倩; 刘翔; 穆锦全; 朱林; 陈文静

    2012-01-01

    目的 通过锥体束CT(cone-beam computed tomography,CBCT)三维成像后研究分析安氏Ⅱ类颅面部的骨性结构特征.方法 对40名成年人患者(对照组安氏Ⅰ类20例,实验组安氏Ⅱ类20例)使用CBCT采集颅面部Dicom数据,使用Dolphin Imaging 11.0对骨组织进行三维重建,选择描述颅面部骨性结构的22个点进行描记,对14个测量值进行分析统计.结果 眶点、髁突顶点、下颌角点的不对称率呈现由上至下变大的趋势,安氏Ⅱ类的上颌磨牙宽度、下颌升支长度以及左右两侧下颌角点距离冠状面的距离相对安氏Ⅰ类有显著性差异(P<0.05);安氏Ⅱ类双侧下颌磨牙距冠状面的距离以及颏点的位置较安氏Ⅰ类有明显统计学差异(P<0.01).结论 CBCT三维成像能有效分析颅面部骨组织的各项特征,本组安氏Ⅱ类患者的颅面部骨组织特征主要为下颌升支发育不足、下颌骨及颏部后缩以及下磨牙的远中移动.%Objective The objective of this study was to analyze the skeletal and dental characteristics of subjects with Class Ⅱ subdivision malocclusions with use of cone-beam computed tomography.Methods Cone-beam computed tomography scans were performed in twenty subjects with Class Ⅱ subdivision malocclusions and twenty subjects with normal occlusions.CT images were constructed into 3D model by using medical image processing software Dolphin Imaging 11.0.Anatomical landmarks were located and reference planes were established on the 3D model. The measurements were analyzed by SPSS 17.0.Results The extent of maxillofacial deformity assessed with points of O,Co and Go increases in adults with facial asymmetry.Several measurements of Class Ⅱ subdivision malocclusions were found to be different with normal occlusions including the width between upper molars,the length of mandibular ramus and the distances between Gonions.Significant differences were observed in measurements of the distances between

  13. 骨性Ⅲ类BSSRO术后舌骨舌体的三维位置改变%Changes in Hyoid and Tongue in Patients with Skeletal ClassMalocclusion after BSSRO

    Institute of Scientific and Technical Information of China (English)

    张吉霞; 王建国; 邓琪; 彭朋; 苍松

    2013-01-01

    目的:比较双侧下颌升支矢状劈开术(BSSRO)治疗骨性Ⅲ类患者术前术后舌骨的三维位置改变.方法:选取21例患者,对39个测量项目进行配对t检验分析舌骨,舌体三维位置改变.结果:H1-X、H2-X,GR-X、GL-X,TB-X较术前增大(P<0.05),H1-Z、H2-Z减小(P<0.05),舌骨角1,舌骨角2变化显著(P<0.05).结论:BSSRO术后1个月舌骨体后下移位,舌骨大角、舌体下降,舌骨发生前上旋转.%Objective:To assess changes in hyoid and tongue in patients with skeletal classmalocclusion after bilateral sagittal split ramus osteotomy (BSSRO).Methods:21 patients and 39 Measurements with skeletal Classmalocclusion were evaluated.The change of distances from hyoid bone,tongue and mandible to reference frame were analyzed using paired t-test.Results:The hyoid bone (H1-X,H2-X),Greater horn of the hyoid (GR-X,GL-X) and the tongue (TB-X) were increased significantly.The hyoid bone (H1-Z,H2-Z) were decreased significantly.The angle 1 of hyoid decreased and 2 increased significantly.Conclusion:The hyoid significantly moved backward and downward.Greater horn of the hyoid and the tongue significantly moved down.The hyoid significantly changes inclined toward up and forward.

  14. Estudo comparativo das dimensões transversais dos arcos dentários entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão A comparative study of arch widths of white Brazilians with normal occlusion and Class II, Division 1, malocclusion

    Directory of Open Access Journals (Sweden)

    Rejman Roberto

    2006-08-01

    Full Text Available OBJETIVO: avaliar as possíveis diferenças nas dimensões transversais dos arcos dentários superiores e inferiores entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão. METODOLOGIA: foram avaliados 170 pares de modelos em gesso de jovens brasileiros leucodermas, com dentadura permanente, sendo 76 com oclusão normal (41 do gênero feminino e 35 do masculino e média de idade de 13 anos e 6 meses e 94 com má oclusão de Classe II, 1ª divisão (58 do gênero feminino e 36 do masculino e média de idade de 13 anos e 9 meses. Este grupo com má oclusão foi dividido em duas categorias: Classe II sem apinhamento e Classe II com apinhamento. Compararam-se as distâncias intercaninos, interprimeiros pré-molares e intermolares, em ambos os arcos dentários. RESULTADOS: em relação ao grupo com oclusão normal, os jovens do gênero masculino evidenciaram as seguintes diferenças estatisticamente significantes: 1 distância intercaninos inferiores maior para o grupo com Classe II sem apinhamento; 2 distância interprimeiros pré-molares superiores menor para o grupo com Classe II sem apinhamento e 3 distâncias interprimeiros pré-molares e intermolares, superiores e inferiores, menores para o grupo com Classe II com apinhamento. Por sua vez, o gênero feminino evidenciou: 1 distâncias interprimeiros pré-molares e intermolares superiores menores para o grupo com Classe II sem apinhamento e 2 distâncias interprimeiros pré-molares e intermolares, superiores e inferiores, menores para o grupo com Classe II com apinhamento. CONCLUSÃO: de um modo geral, os jovens com má oclusão de Classe II, 1ª divisão, apresentaram uma tendência para deficiência transversal posterior dos arcos dentários, principalmente no grupo com apinhamento.AIM: to evaluate possible differences of the upper and lower dental arches widths among youths with normal occlusion and Class II, division 1, malocclusion. METHODS: the evaluation was conducted

  15. 76 FR 43701 - Renewal of Agency Information Collection for Class III Tribal State Gaming Compact Process...

    Science.gov (United States)

    2011-07-21

    ... Bureau of Indian Affairs Renewal of Agency Information Collection for Class III Tribal State Gaming... the collection of information for the Class III Tribal State Gaming Compact Process. The information... comments on the information collection to Paula L. Hart, Director, Office of Indian Gaming, 1849 C...

  16. 77 FR 48167 - Approved Tribal-State Class III Gaming Compact; Indian Gaming

    Science.gov (United States)

    2012-08-13

    ... Bureau of Indian Affairs Approved Tribal--State Class III Gaming Compact; Indian Gaming AGENCY: Bureau of Indian Affairs, Interior. ACTION: Notice of Approved Tribal--State Class III Gaming Compact. SUMMARY: This notice publishes an approval of the gaming compact between the Eastern Band of Cherokee...

  17. 前牙反(牙合)矫治前后颞下颌关节形态结构改变MRI研究%Effects of Orthodontic Treatment on Temporomandibular Joint of Patients with Adult Functional ClassMalocclusion by MRI

    Institute of Scientific and Technical Information of China (English)

    石勰; 张端强; 许潾于; 严宏

    2012-01-01

    目的 研究成人功能性反(牙合)病例治疗前后颞下颌关节髁突位置、关节盘位置的结构变化,及其与临床症状、体征的相互关系.方法 利用MRI成像分析12例成人反(牙合)病例治疗前后髁突位置和关节盘位置变化,并通过Helkimo指数评价治疗前后颞下颌关节功能.结果 Ⅲ类功能性反(牙合)病例治疗前髁突位于关节窝的前位,治疗后髁突位于关节窝的中位,关节盘位置治疗前后变化无显著差异.关节盘位置正常的病例,关节的临床症状和体征治疗前后无明显变化;关节盘前移位的病例,治疗后主诉症状和临床体征有加重趋势.结论 成人功能性反(牙合)病例通过正畸治疗髁突位于关节窝中位,有利于行使关节的正常功能.%Objective To evaluate the effects of orthodontic treatment on temporomandibular joint morphological changes of patients with adult functional Classmalocclusion and to find out whether these were related to clinic symptoms and signs . Methods 12 patients were examined by MRI before and after treatment to study the changes of the position of condyle and meniscus to evaluate the function of tern -poromandibular joint by Helkimo index . Results Before treatment functional Class Ⅲ patients demonstrated more anteriorly positioned condyles . After treatment functional Class Ⅲ patients demonstreated concentricly positioned condylers , and there is no difference of position of meniscus before and after treat -ment. The patients with normal meniscus position hadnt obvious changes of clinic symptoms and signs . The patients with anterior disc displacement had more severe changes of clinic symptoms and signs . Conclusion Orthodontic treatment induce position of condyle to concentricly positioned and is effective in the treatment of adult functional classmalocclusion .

  18. The Oropharyngeal Airway in Young Adults with Skeletal Class II and Class III Deformities: A 3-D Morphometric Analysis.

    Directory of Open Access Journals (Sweden)

    Yasas Shri Nalaka Jayaratne

    Full Text Available 1 To determine the accuracy and reliability of an automated anthropometric measurement software for the oropharyngeal airway and 2 To compare the anthropometric dimensions of the oropharyngeal airway in skeletal class II and III deformity patients.Cone-beam CT (CBCT scans of 62 patients with skeletal class II or III deformities were used for this study. Volumetric, linear and surface area measurements retroglossal (RG and retropalatal (RP compartments of the oropharyngeal airway was measured with the 3dMDVultus software. Accuracy of automated anthropometric pharyngeal airway measurements was assessed using an airway phantom.The software was found to be reasonably accurate for measuring dimensions of air passages. The total oropharyngeal volume was significantly greater in the skeletal class III deformity group (16.7 ± 9.04 mm3 compared with class II subjects (11.87 ± 4.01 mm3. The average surface area of both the RG and RP compartments were significantly larger in the class III deformity group. The most constricted area in the RG and RP airway was significantly larger in individuals with skeletal class III deformity. The anterior-posterior (AP length of this constriction was significantly greater in skeletal class III individuals in both compartments, whereas the width of the constriction was not significantly different between the two groups in both compartments. The RP compartment was larger but less uniform than the RG compartment in both skeletal deformities.Significant differences were observed in morphological characteristics of the oropharyngeal airway in individuals with skeletal class II and III deformities. This information may be valuable for surgeons in orthognathic treatment planning, especially for mandibular setback surgery that might compromise the oropharyngeal patency.

  19. Civilization III and Whole-Class Play in High School Social Studies

    Science.gov (United States)

    Lee, John K.; Probert, Jeffrey

    2010-01-01

    This study examined an 11th grade high school class as they played the game Civilization III. Over nine class sessions students played the game in support of other activities related to several predetermined and emergent topics in U. S. history. Gameplay was whole-class oriented and involved students taking turns at the computer controlling…

  20. 骨性三类错颌畸形患者术前心理状态的调查与分析%Investigation and analysis of preoperative psychological status in patients with skeletal Classmalocclusion

    Institute of Scientific and Technical Information of China (English)

    王璧霞; 袁卫军; 蒋莉莉

    2013-01-01

    目的 通过调查,了解拟施行正颌正畸联合手术治疗的骨性三类错颌畸形患者的心理状态,从而为临床医护人员正确评估此类患者的心理特点,并结合患者个性特点实施围手术期心理护理提供基础与依据.方法 选择2011年2月-2012年1月在上海交通大学医学院附属第九人民医院就诊的骨性三类错颌畸形患者65例,采用症状自评量表(symptom checklist 90,SCL-90)于手术前进行问卷调查,并与常模比较.结果 患者各项因子得分除精神病性因子以外均小于常模,但在躯体化、人际关系敏感、抑郁和敌对等维度上比较差异有统计学意义;不同性别、学生与就业、婚姻状况及不同年龄患者心理状态比较差异有统计学意义.结论 骨性三类错颌畸形患者总体心理、情绪状态良好,但不同患者存在不同的心理状况,临床医护人员应正确评估其心理情绪状态,并结合其个性特点规划治疗和护理方案.%Objective To investigate the preoperative psychological status in the patients undergoing surgical-orthodontic treatment of skeletal Classmalocclusion, to assess their psychological characteristics, and to provide theoretical basis for psychological nursing before and after surgery. Methods The data of general information and Symptom Checklist-90 (SCL-90) questionnaires were collected from 65 patients admitted for surgical-orthodontic treatment of skeletal Classmalocclusion in our hospital from February 2011 to January 2012. Results The factor scores of SCL-90 were lower in comparison to norm except psychoticism factor. There were no statistical differences in the factors of somatization, interpersonal sensitivity, depression, and hostility. The background factors such as sex, age, marriage condition and career significantly influenced the psychological status. Conclusion The overall psychological status in the patients with skeletal Classmalocclusion were fairly well

  1. Pleiotropic developmental expression of HasPOU-III, a class III POU gene, in the gastropod Haliotis asinina.

    Science.gov (United States)

    O'Brien, Elizabeth K; Degnan, Bernard M

    2002-06-01

    HasPOU-III is expressed in multiple cell types during the first 3 days of development of the gastropod Haliotis asinina. HasPOU-III expression begins in two bilaterally symmetrical sets of cells on the ventral ectodermal surface of the trochophore larva; one set are putative foot mucous cells. After torsion, HasPOU-III transcripts transiently appear in the developing ganglia of the central nervous system. At the end of larval morphogenesis, HasPOU-III expression is initiated in dorsoposterior cells of the visceral mass, in the posterior cells of the statocyst and in the developing radular sac. These expression patterns in Haliotis, a spiralian lophotrochozoan, are similar to POU Class III genes in other bilaterians where expression occurs in secretory cells and the developing nervous system.

  2. Bone Maturation in Patients with Angle’s Class II Division 1 Malocclusion Caused by Dental Development Maduración ósea en pacientes con maloclusión clase II división 1 de Angle a partir del desarrollo dental

    OpenAIRE

    Clotilde de la Caridad Mora Pérez; Rasiel Cruz Caballero; Saray Martínez Santos; Gretel Rivas Pérez

    2012-01-01

    Background: chronological age does not always allow assessing the somatic development and maturation of patients. Therefore, we resort to bone maturation study, a safer and more reliable method to assess the biological age of individuals. Objective: To determine bone maturation from dental development in patients with Angle’s class II division 1 malocclusion. Methods: A descriptive, observational and cross-...

  3. 安氏Ⅱ1类错前牙宽度厚度与Bolton 指数测量分析%STUDY IN THE MESIODISTAL WIDTH AND THE CROWN THICKNESS OF ANTERIOR TEETH AND BONLTON INDEX IN CLASS Ⅱ1 MALOCCLUSION

    Institute of Scientific and Technical Information of China (English)

    徐佳瑛; 马超

    2015-01-01

    目的:通过对正常与安氏Ⅱ1类错模型的比较,分析上下颌牙冠宽度、上颌牙冠厚度、Bolton指数差异,为安氏Ⅱ1类错矫治设计提供参考。方法以正常,安氏Ⅱ1类错各50例为研究对象,分别进行牙冠宽度、牙冠厚度的测量并计算。结果安氏Ⅱ1类错上下颌侧切牙和下颌中切牙的牙冠宽度比正常大,差异有统计学意义(P<0.05)。 Bolton 指数前牙比:正常>安氏Ⅱ1类错。安氏Ⅱ1类错上前牙牙冠厚度均大于正常,差异有统计学意义(P <0.05)。 结论上下颌牙量不调和上前牙牙冠厚度变化会对安氏Ⅱ1类错矫治后期正常前牙咬合关系的建立产生影响。%Objective To compare the mesiodistal width and the crown thickness of anterior teeth and Bolt‐on Index of Class Ⅱ 1 and normal occlusion casts in order to provide reference for the diagnosis and treat‐ment of Class Ⅱ 1 malocclusion .Methods Fifty cases of normal occlusion ,Class Ⅱ 1 malocclusion were selected ,respectively .Mesiodistal width of anterior teeth and the upper anterior teeth's thickness were measured and Bolton Index was calculated .Results The results indicated that mesiodistal width of maxil‐lary and mandibular lateral incisors and mandibular central incisors in Class Ⅱ 1 malocclusion were larger than that in normal occlusion with significant difference(P< 0 .05) .Bolton Index of normal occlusion was larger than that of Class Ⅱ 1 malocclusion .The crown thickness of upper anterior teeth in Class Ⅱ 1 maloc‐clusion were larger than that in normal occlusion with significant difference(P < 0 .05) .Conclusion The maxillary and mandibular teeth size discrepancy and the change of the upper anterior teeth's thickness can have effect on the ultimate occlusion of Class Ⅱ 1 malocclusion after orthodontic treatmeant .

  4. 安氏Ⅱ1类人群牙尖交错位的平衡与稳定性的分析%Study on equilibrium and stabilization of mandibular intercuspal position in Class Ⅱ Division Ⅰ malocclusions

    Institute of Scientific and Technical Information of China (English)

    林焱; 张端强

    2009-01-01

    Objective To analyze the dynamic occlusal contacts in ClassⅡDivision Ⅰ Malocclusions during mandibular movement from muscular contact position(MCP)to intercuspal position(ICP),and to investigate the equilibrium and stabilization of ICP as well as dental morphological factors related to the MCP-ICP discrepancy.Methods 60 subjects with Class Ⅱ Division Ⅰ Malocclusions with no history of orthodontic treatment were employed.T-scan Ⅱ system was used to record and analyze the dynamic occlusal contacts during mandibular movement from MCP to ICP.Dental morphological data were determined by measuring plaster mold.SPSS 12.0 was used for statistics.Resuits There was no significant difference among three repeated measurements of the vertical distance from the center of occlusive force to the midline,D-value of occlusive force between the right and the left side,the numbers of occlusal contacts in the intercuspal position.Significant difference of the posterior arch-widths was observed between the group with and without ICP-MCP discrepancy.There was no significant difference between the groups in the depth fluency of curve of spee,and index of molar relationship.Conclusions Class Ⅱ Division Ⅰ Malocclusions is characterized by stability with intercupided occlusion.ICP-MCP discrepancy maybe associate with abnormal posterior arch-width,and is independent of the vertical and sagittal discrepancy.%目的 研究安氏Ⅱ1类人群肌位到牙位运动过程中的动态咬合接触情况,探讨牙尖交错位的稳定性、肌位-牙位的一致性(平衡性)及其相关的(牙合)形态因素.方法 对60名未经过正畸治疗的安氏Ⅱ1类受试者进行检查,采用T-ScanⅡ咬合分析系统记录并分析其肌位到牙位运动过程中的动态(牙合)接触情况,在模型上分析(牙合)形态,利用SPSS12.0对数据进行分析.结果 ①牙尖交错位上的胎力中心点与中线的垂直距离、左右侧(牙合)力差值及(牙合)接触点数目在

  5. Increased expression of class III β-tubulin in castration-resistant human prostate cancer

    OpenAIRE

    Terry, S; Ploussard, G; Allory, Y; Nicolaiew, N; Boissière-Michot, F; Maillé, P; Kheuang, L; Coppolani, E; Ali, A.; Bibeau, F; Culine, S; Buttyan, R.; de la Taille, A; Vacherot, F

    2009-01-01

    Background: Class III β-tubulin (βIII-tubulin) is expressed in tissues of neuronal lineage and also in several human malignancies, including non-small-cell lung carcinoma, breast and ovarian cancer. Overexpression of βIII-tubulin in these tumours is associated with an unfavourable outcome and resistance to taxane-based therapies. At present, βIII-tubulin expression remains largely uncharacterised in prostate cancer. Methods: In this report, we evaluated the expression of βIII-tubulin in 138 d...

  6. 25 CFR 291.3 - When may an Indian tribe ask the Secretary to issue Class III gaming procedures?

    Science.gov (United States)

    2010-04-01

    ... III gaming procedures? 291.3 Section 291.3 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ECONOMIC ENTERPRISES CLASS III GAMING PROCEDURES § 291.3 When may an Indian tribe ask the Secretary to issue Class III gaming procedures? An Indian tribe may ask the Secretary to issue Class...

  7. 25 CFR 291.12 - Who will monitor and enforce tribal compliance with the Class III gaming procedures?

    Science.gov (United States)

    2010-04-01

    ... Class III gaming procedures? 291.12 Section 291.12 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ECONOMIC ENTERPRISES CLASS III GAMING PROCEDURES § 291.12 Who will monitor and enforce tribal compliance with the Class III gaming procedures? The Indian tribe and the State may have an...

  8. Efeitos transversais da expansão rápida da maxila em pacientes com má oclusão de Classe II: avaliação por Tomografia Computadorizada Cone-Beam Transverse effects of rapid maxillary expansion in Class II malocclusion patients: a Cone-Beam Computed Tomography study

    Directory of Open Access Journals (Sweden)

    Carolina Baratieri

    2010-10-01

    Full Text Available OBJETIVO: avaliar por meio de Tomografia Computadorizada Cone-Beam (TCCB os efeitos transversais, imediatos e após o período de contenção, da expansão rápida da maxila (ERM em pacientes com má oclusão de Classe II. MÉTODOS: dezessete crianças (idade inicial média de 10,36 anos com má oclusão de Classe II e deficiência transversal esquelética da maxila foram submetidas ao protocolo de ERM com aparelho expansor de Haas. TCCBs foram realizadas antes dos procedimentos clínicos (T1, imediatamente após a estabilização do parafuso expansor (T2 e após completados 6 meses de contenção e removido o aparelho (T3. Com o software Dolphin, foram possíveis a manipulação das imagens e as mensurações. O teste t de Student pareado foi utilizado para identificar significância estatística (pOBJECTIVE: The aim of this study was to evaluate by Cone-Beam Computed Tomography (CBCT transversal responses, immediately and after the retention period, to rapid maxillary expansion (RME, in Class II malocclusion patients. METHODS: Seventeen children (mean initial age of 10.36 years, with Class II malocclusion and skeletal constricted maxilla, underwent Haas´ protocol for RME. CBCT scans were taken before treatment (T1, at the end of the active expansion phase (T2 and after the retention period of six months (T3. The scans were managed in Dolphin software, where landmarks were marked and measured, on a coronal slice passing through the upper first molar. The paired Student´s t-test was used to identify significant differences (p<0.05 between T2 and T1, T3 and T2, and T3 and T1. RESULTS: Immediately after RME, the mean increase in maxillary basal, alveolar and dental width was 1.95 mm, 4.30 mm and 6.89 mm, respectively. This was accompanied by buccal inclination of the right (7.31° and left (6.46° first molars. At the end of the retention period, the entire transverse dimension increased was maintained and the dentoalveolar inclination resumed

  9. Articulación de fones en individuos clase esqueletal I,II y III Speech patterns in skeletal class I, II and III subjects

    Directory of Open Access Journals (Sweden)

    Pía Villanueva

    2009-09-01

    Full Text Available OBJETIVO: determinar los patrones de articulación de fones consonánticos en sujetos de habla española chilena clases I, II y III esqueletal; comparar las diferencias fonéticas que existan entre clases esqueletales. MÉTODOS: se seleccionaron 54 individuos que cumplían con los criterios de inclusión determinados mediante un examen clínico intraoral y a través del análisis de Ricketts, y se conformaron los grupos de estudio de pacientes clases esqueletales I, II y III. Se les realizó un examen fonoarticulatorio estandarizado para determinar los fones modificados y el patrón articulatorio compensatorio realizado. RESULTADOS: se observaron cambios en el punto de articulación de fones consonánticos en las tres clases esqueletales, con diferencias significativas en los grupos de fones anteriores y medios entre pacientes clases I y II, sólo en el grupo de los fones anteriores entre pacientes I y III. Entre pacientes clases II y III no se observaron diferencias significativas. Se reportan modificaciones y compensaciones cualitativamente distintas entre las clases esqueletales. CONCLUSIONES: en relación a pacientes clase I, los pacientes clase II o III, presentan distinto grado de modificación en el punto de articulación de fones consonánticos. Las diferencias observadas se relacionan con los patrones esqueletales propios de cada clase.PURPOSE: to determine the consonant phonemes articulation patterns in Chilean skeletal class I, II and III Spanish speakers and compare their phonetic differences. METHODS: fifty-four skeletal class I, II and III subjects were selected, based on intraoral clinical examination and Ricketts cephalometric analysis, constituting the study groups. A standardized phonoarticulatory test was applied to each patient to determine the modified phonemes and their compensatory patterns. RESULTS: the findings indicate changes in articulation in all three groups. Significant differences were found in anterior and medium

  10. Assessment of technical documentation of Class III medical devices

    NARCIS (Netherlands)

    Roszek B; de Bruijn ACP; Pot JWGA; van Drongelen AW; BMT; vgc

    2010-01-01

    Europese regelgeving vereist dat fabrikanten van medische hulpmiddelen een dossier opstellen waaruit blijkt dat het hulpmiddel veilig en functioneel is. De kwaliteit van dossiers van de hoogste risicoklasse medische hulpmiddelen, klasse III, laat evenwel te wensen over. Dit blijkt uit onderzoek va

  11. A benefit-risk assessment of class III antiarrhythmic agents

    DEFF Research Database (Denmark)

    Brendorp, Bente; Pedersen, Oledyg; Torp-Pedersen, Christian;

    2002-01-01

    With beta-blockers as the exception, increasing doubt is emerging on the value of antiarrhythmic drug therapy following a series of trials that have either shown no mortality benefit or even an excess mortality. Vaughan Williams class I drugs are generally avoided in patients with structural heart...

  12. The effect of early physiotherapy on the recovery of mandibular function after orthognathic surgery for class III correction. Part II: electromyographic activity of masticatory muscles.

    Science.gov (United States)

    Ko, Ellen Wen-Ching; Teng, Terry Te-Yi; Huang, Chiung Shing; Chen, Yu-Ray

    2015-01-01

    The study was conducted to evaluate the effect of early physical rehabilitation by comparing the differences of surface electromyographic (sEMG) activity in the masseter and anterior temporalis muscles after surgical correction of skeletal class III malocclusion. The prospective study included 63 patients; the experimental groups contained 31 patients who received early systematic physical rehabilitation; the control group (32 patients) did not receive physiotherapy. The amplitude of sEMG in the masticatory muscles reached 72.6-121.3% and 37.5-64.6% of pre-surgical values in the experimental and control groups respectively at 6 weeks after orthognathic surgery (OGS). At 6 months after OGS, the sEMG reached 135.1-233.4% and 89.6-122.5% of pre-surgical values in the experimental and control groups respectively. Most variables in the sEMG examination indicated that recovery of the masticatory muscles in the experimental group was better than the control group as estimated in the early phase (T1 to T2) and the total phase (T1 to T3); there were no significant differences between the mean recovery percentages in the later phase (T2 to T3). Early physical rehabilitative therapy is helpful for early recovery of muscle activity in masticatory muscles after OGS. After termination of physical therapy, no significant difference in recovery was indicated in patients with or without early physiotherapy.

  13. Comparison of the Bolton index and Bolton tooth size discrepancies between Class II1 and II2 malocclusion%安氏Ⅱ1与Ⅱ2错(牙合)牙量不调的对比研究

    Institute of Scientific and Technical Information of China (English)

    马宁; 郑旭; 陈晓红

    2011-01-01

    目的 通过比较安氏II1与安氏II2错(牙合)Bolton指数及Bolton不调量,探讨两类错(牙合)在上下颌牙量关系方面的差异.方法 以安氏II1错(牙合)129例,安氏II2错(牙合)81例为研究对象,分别对其模型进行牙冠宽度测量,计算Bolton指数,再根据Bolton指数正常值获取上颌Bolton不调量.两组之间进行统计学分析.结果 ①安氏II2错(牙合)全牙Bolton指数比值(0.92±0.02)大于安氏II1错(0.91±0.02),差异有统计学意义(P=0.044),而两类错间前牙Bolton指数比值的差异无统计学意义(P=0.240).② 安氏II2错(牙合)前牙Bolton不调量(1.05±0.96)大于安氏II1(0.73±0.60)错,差异有统计学意义(P=0.044),而全牙Bolton不调量的差异无统计学意义(P=0.664).结论 两类错(牙合)在Bolton指数及Bolton不调量方面存在差异,在治疗时应该加以重视.%Objective To compare the Bolton index and Bolton tooth size discrepancies between Class II1 and Class II2 cases. Methods 129 casts of Class II1 patients and 81 casts of Class II2 patients were selected. Mesiodistal width of teeth was measured and Bolton index was calculated. According to Bolton rate standards, the tooth size discrepancies were calculated. Statistical analysis was made between these two groups. Results ① The total Bolton index in Class II2 cases (0.92±0.02) was significantly larger than that in Class II1 cases (0.91±0.02),(P=0.044). There were no significant differences of the anterior Bolton index between these two classes of malocclusion (P=0.240). ② The anterior Bolton tooth size discrepancies in Class II2 patients (1.05±0.96) were significantly larger than that in Class II1 patients (0.73±0.60), (P=0.044). There were no significant differences of the total Bolton tooth size discrepancies between the two classes (P=0.664). Conclusions There were differences of the Bolton index and Bolton tooth size discrepancies between Class II1 and Class II2 patients.

  14. 安氏II1错牙合软组织变化的临床研究%CLINICAL STUDY OF THE SOFT TISSUE CHANGES IN CLASS II1 MALOCCLUSION

    Institute of Scientific and Technical Information of China (English)

    乌兰其其格; 陈林; 李宜宸; 李硕光; 杜慧婷; 李丹阳

    2016-01-01

    Objective:To investigate the overall appearance and soft tissue changes in Class II1 malocclusion patients treated with MBT straight wire technology combining with inclined plane appliance in different stages,and discuss the clinical efficacy for diagnosis and treatment in Class II1 malocclusion. Methods:40 cases of patients that conform to the standard were selected with non-extraction treatment. According to the different stages of treatment using MBT straight wire appliance with inclined plane,the whole course of treatment was divided into three stages:pre-treatment,mid-treatment(maxillary aligned phase),post-treatment(end of treatment phase and remove the inclined plane) . All the cases at the end of each stage had shot positioning cephalometric X-ray film in the same skull X-ray machine locator ( Kodak 8000 c panoramic machine ) . Using cephalometric analysis software(Winceph 8.0 software)to demarcate hard and soft tissue landmarks(see below)and draw, then measuring the value of each hard and soft tissue measurements to analyze the changes of maxillofacial soft tissue. 7 soft tissue markers were:Ls-E,Li-E,S-N'-Sn,S-N'-B',Cm-Sn-Ls,N'-Sn-Pg',Z angle. The data was statistically analyzed by using SPSS 13. 0 software in each stage to analyze the changes of hard and soft tissue and the correlation between the index. Results:1. The overall appearance changes of the Class II 1 patients mainly represent for correcting mandibular retraction and achieving coordinated and beautiful side appearance effects after treatment. 2. The meas-urement changes of soft tissue in Class II 1 malocclusion in each stage including the teeth tongue backward in the maxillary anterior over-jet decreases. The high front,high back and the length of the mandibular body increased and the S-N'-Sn,Ls-E,and Cm-Sn-Ls were larger(P<0. 05),which had statistically significance. Ul-SN angle become smaller ( P<0. 05 ), had statistically significance. Conclusion:1 . For Class II 1 patients with

  15. Resting position of the head and malocclusion in a group of patients with cerebral palsy

    Science.gov (United States)

    Martinez-Mihi, Victoria; Orellana, Lorena M.; Silvestre-Rangil, Javier

    2014-01-01

    Cerebral palsy are found as a result of these disorders, along with associated neuromuscular functional alterations that affect the resting position of the head. In this context, the resting position of the head could be responsible for several skeletal and dental occlusal disorders among patients with cerebral palsy. Objective: To assess the presence of malocclusions in patients with cerebral palsy, define the most frequent types of malocclusions, and evaluate how the resting position of the head may be implicated in the development of such malocclusions. Study design: Forty-four patients aged between 12-55 years (18 males and 26 females) were studied. Occlusal conditions, the Dental Aesthetic Index (DAI), changes in the resting position of the head, and breathing and swallowing functions were assessed. Results: Orthodontic treatment was required by 70.8% of the patients, the most frequent malocclusions being molar class II, open bite and high overjet. These individuals showed altered breathing and swallowing functions, as well as habit and postural disorders. The resting position of the head, especially the hyperextended presentation, was significantly correlated to high DAI scores. Conclusions: The results obtained suggest that patients with cerebral palsy are more susceptible to present malocclusions, particularly molar class II malocclusion, increased open bite, and high overjet. Such alterations in turn are more common in patients with a hyperextended position of the head. Key words:Cerebral palsy, malocclusion, head position, disabled patients. PMID:24596627

  16. 35例安氏Ⅱ类1分类错(牙合)双期矫正的临床分析%Clinical analysis of two-phase treatment of 35 cases with Angle Class Ⅱ division 1 malocclusion

    Institute of Scientific and Technical Information of China (English)

    汤秀春; 陈振琦; 王永武; 王翔宇; 宫耀

    2012-01-01

    PURPOSE: To evaluate the clinical value of the two -phase treatment of Angle Class II division 1 malocclusion. METHODS: Thirty five cases with Claw II division 1 malocclusion were treated with two-phase treatment (Twin-block functional appliance and fixed appliance).Lateral cephalograms were taken before and after treatment for each patient. The results were analyzed with paired t test using SPSS 11.0 software package. RESULTS: After treatment ,the bile relation of molars ,the overbite and overjet and soft tissue profile were improved. ANB angle,U1-SN,OB,OJ,UL-E, ULP were decreased respectively (P<0.01). SNB, C0-G0,G0-G0,C0-C0 were increased respectively (P<0.01). L1-Mp and FH-MF were increased, too(P<0.05). CONCLUSIONS: Twin-block functional appliance pnssesses the orthopedic effects on Angle Class II division I malocelusion.lt limits the maxillary growth forward and promotes the mandibular growth by repositioning the mandible forward.These may contribute to a harmonious relationship of upper and lower jaws and a better profile.%目的:探讨双期矫正在治疗安氏Ⅱ类1分类错(牙合)畸形中的临床效果.方法:对35例安氏Ⅱ类1分类错(牙合)患者进行双期矫正(Twin-block功能性矫治器+固定矫正),应用SPSS11.0软件包对治疗前后的X线头影测量数据进行配对t检验.结果:双期治疗结束后,患者后牙咬合,前牙覆(牙合)、覆盖及侧貌均有明显改善下颌生长朝着有利的方向发生改变.∠ ANB、UI/SN、OB、OJ、UL-E、ULP在治疔后减少,差异具有统计学意义(P<0.01).∠SNB、Go-Go、Go-Gn、Go-Gn在治疗后增加,差异具有统计学意义(P<0.01),LI -MP、FH- MP均显著增加(P<0.05).结论:Twin-block矫治器对于安氏Ⅱ类1分类错(牙合)患者具有矫治作用,通过诱导下颌功能性前移,抑制上颌骨生长,促进下颌骨生长,协调上、下颌骨关系,改善面型.

  17. 不同功能矫治器早期矫治Ⅱ类骨性错(牙合)的系统研究%Early treatment of skeletal classmalocclusion: A systematic review speciality

    Institute of Scientific and Technical Information of China (English)

    牛亦睿; 周洪

    2012-01-01

    Objective: To compare the effects of different functional appliances in the treatment of skeletal class H malocclusion. Methods: A literature survey was performed by applying die database of MEDLINE and CNK1. The Data of clinical randomized con-trolle trials(RCTs) and controlled clinical trials( CCTs) were selected, Meta analysis was conducted with the software Review 4. 2. Results: The search strategy resulted in 111 English articles and43 Chinese articles. 19 articles were qualified for the final analysis. In the qualified articles the treatment effects of 5 kinds of functional appliance were reported. The decrease of SNA was not significantly different between the groups of Activatoer and Binator, SNA decreased more in Twin-block group than in Herbst. The increase of SNB in group Twin-block = in Activator > in Herbst > in Bionator. The decrese of ANB in group of Twin-block > in Activator > in Bionator > in Herbst > in Frankel- II. The decrease of overjet in group of Twin-block > in Herbst > in Frankel- II. The decrease of Ul-NA in group of Frankel- II > in Activator > Herbst. The decrease of Ul-PP in group Twin-block >in Frankel- II > in Bionator. The increase of IMPA in group Herbst > in Bionator > in Twin-block. IMPA was not significantly different between the groups of Activator and Frankel- II ■ Conclusion; Frankel- II is not effective in the treatment of sever skeletal Class II malocclusions while Twin-block and Activor are. Patients with low IMPA or with poor treatment compliance should be treated with Herbst. Activator is more effective than Bionator in correction of skeletal sagital problem and lingual inclination of upper anterior teeth.%目的:对不同功能矫治器早期矫治骨性Ⅱ类错(牙合)的疗效进行比较,了解其临床矫治特点.方法:用循证学方法,网络检索数据库MEDLINE和中国学术期刊全文数据库(CNKI),搜集治疗Ⅱ类错(牙合)的临床试验以及随机对照临床试验的文献,采用Review 4.2

  18. Regulation of MIR165/166 by class II and class III homeodomain leucine zipper proteins establishes leaf polarity

    DEFF Research Database (Denmark)

    Merelo, Paz; Ram, Hathi; Pia Caggiano, Monica;

    2016-01-01

    -ZIP) transcription factors are key mediators in the regulation of adaxial-abaxial patterning. Their expression is restricted adaxially during early development by the abaxially expressed microRNA (MIR)165/166, yet the mechanism that restricts MIR165/166 expression to abaxial leaf tissues remains unknown. Here, we...... show that class III and class II HD-ZIP proteins act together to repress MIR165/166 via a conserved cis-element in their promoters. Organ morphology and tissue patterning in plants, therefore, depend on a bidirectional repressive circuit involving a set of miRNAs and its targets....

  19. PENGGUNAAN INCLINED BITE PLANE SEBAGAI ALAT BANTU UNTUK KOREKSI GIGITAN SILANG ANTERIOR PADA KASUS MALOKLUSI KLAS III SKELETAL

    Directory of Open Access Journals (Sweden)

    Amutavia P. Artsianti P.

    2015-08-01

    Full Text Available Anterior crossbite occurs in children and adult. This anterior crossbite could be a dental (pseudo class III or a skeletal class III malocclusions. A 15 year old young female came to orthodontic clinic RSGM FKGUI with maxillary dental crowding which canines were more protruded. The dental of mandible were more protruded than maxillary dental. The clinical examination, anamnesis, functional analyses and cephalometric evaluation and model study showed that it was a skeletal class III malocclusion with maxillary skeletal retrusion. To treat the anterior crossbite, the inclined bite plane is used for 2 weeks and followed by fixed appliance. After 2 month treatment, the anterior crossbite is resolved. The result of cephalometric evaluation showed that the use of inclined bite plane as a tool is quite effective to resolve this case.

  20. Two-phase treatment of skeletal class II malocclusion with the combination of the twin-block appliance and high-pull headgear.

    Science.gov (United States)

    Lv, Yan; Yan, Bin; Wang, Lin

    2012-08-01

    The patient was a boy with a Class II skeletal and dental relationship, a large overjet, an impinging overbite, and a steep mandibular plane angle. Treatment started with the Twin-block appliance combined with high-pull headgear to promote growth of the mandible, restrain the maxilla in the anteroposterior and vertical planes, and improve his profile. This was followed by extraction of the maxillary second premolars and the mandibular first premolars. Then fixed appliances were used to align and level the dentition. Pretreatment and posttreatment records are shown, and the treatment results are stable 2 years after debonding.

  1. Comparison of the tooth width and Bolton index between Angle class Ⅱ1 and Ⅱ2 malocclusion%安氏Ⅱ1与安氏Ⅱ2错(牙合)牙冠宽度与Bolton指数的对比研究

    Institute of Scientific and Technical Information of China (English)

    马宁; 汤玉真

    2011-01-01

    Objective: To compare the tooth width and Bolton index between Angle class Ⅱ1 and Ⅱ2 malocclusion.Methods: 54 casts of Class Ⅱ1 malocclusion and 35 of Class Ⅱ2 were selected.Mesiodistal width of the teeth were measured and Bolton index was calculated.The tooth width, and the Bolton index and the incidence of abnormal Bolton index were compared.Results: 1.There was no sexual difference of the Bolton index in the two classes of malocclusion( P > 0.05 ).2.There was no significant difference of the tooth width in the males between the two classes of malocclusion( P >0.05 ).But in the females , the tooth width of the maxillary central incisor, lateral incisor, canine, the first molar and the mandibular central incisor and canine in the class Ⅱ1 were significantly larget than in class Ⅱ2 ( P < 0.05 ).3.There was no significant difference of the Bolton index and the incidence of abnormal Bolton index between the two classes(P >0.05).Conclusion: The significant difference of the tooth width in the females between class Ⅱ1 and class Ⅱ2 is one of the differences of the teeth and occlusion between the two classes of malocclusion.%目的:通过比较安氏Ⅱ1与安氏Ⅱ2错(牙合)上下颌牙冠宽度和Bolton指数,探讨两类错(牙合)在牙(牙合) 特征上的差异.方法:以安氏Ⅱ1错(牙合)54 例,安氏Ⅱ2错(牙合)35 例为研究对象,分别对其模型进行牙冠宽度测量并计算Bolton指数.比较两类错(牙合)的牙冠宽度、Bolton指数的大小以及Bolton指数不调的分布率.结果:①两类错(牙合)患者的Bolton指数均无显著的性别差异(P>0.05).②两类错(牙合)间男性患者的牙冠宽度未表现出统计学差异(P>0.05),而女性患者安氏Ⅱ1错(牙合)其上颌中切牙、侧切牙、尖牙、第一磨牙,下颌中切牙、尖牙的牙冠宽度显著大于安氏Ⅱ2错(牙合),差异有统计学意义(P<0.05).③两类错(牙合)间Bolton指数比值及Bolton指数不调率

  2. Using clear aligner therapy to correct malocclusion with crowding and an open bite.

    Science.gov (United States)

    Harnick, David J

    2012-01-01

    Clear aligner therapy (CAT) has been used successfully to correct minor spacing and crowding. It generally has not been indicated in more complicated malocclusions such as skeletal discrepancies and open bites; however, recent advances in technology and practitioner expertise now allow the use of CAT in these situations. This case report demonstrates the use of a CAT system (Invisalign) to correct a Class II malocclusion with crowding and an open bite tendency.

  3. CEPHALOMETRIC STUDY OF UPPER AIRWAY AND THE HYOID BONE POSTION IN MIXED DENTITION CHILDREN WITH SKELETAL CLASS (Ⅲ) MALOCCLUSION%替牙期骨性Ⅲ类错(牙合)儿童上气道形态及舌骨位置的X线头影测量

    Institute of Scientific and Technical Information of China (English)

    赵志婷; 范存晖; 杨茜; 陈杰; 刘新强; 许涛

    2013-01-01

    目的 探讨替牙期骨性Ⅲ类错(牙合)儿童上气道形态及舌骨位置的特征.方法 选取替牙期(颈椎骨龄7~11岁)骨性Ⅲ类错(牙合)及骨性Ⅰ类正常对照组儿童各30例,拍摄X线头颅定位侧位片,应用Winceph 8.0 X线头影测量分析软件进行气道宽度和舌骨位置的头影测量.比较两组鼻咽、腭咽、舌咽和喉咽各部位气道宽度和舌骨位置的差异.结果 替牙期骨性Ⅲ类错(牙合)儿童的上气道各段均明显窄于正常对照组儿童(t=2.035~4.578,P<0.05),软腭宽度明显增大(t=2.389,P<0.05),舌骨位置更靠前(t=2.583、2.696,P<0.05).结论 替牙期骨性Ⅲ类错(牙合)儿童气道形态和舌骨位置存在特征性改变.%Objective To investigate the features of upper airway appearance and the position of hyoid bone in mixed dentition children with skeletal classmalocclusion.Methods Thirty children in mixed dentition (cervical vertebral maturation 7-11 years) with skeletal classmalocclusion,and 30 normal children were included in this study.Cephalometric radiographs were taken for the children.The width of the upper airway and the position of the hyoid bone were measured by using Winceph 8.0 software.The width of each part airway and the position of hyoid bone between the two groups were compared.Results Compared with normal children,the width of each part upper airway in skeletal classmalocclusion ones was markedly narrowed (t =2.035-4.578,P<0.05),the width of the soft palate increased (t =2.389,P<0.05),and the position of hyoid bone located more anteriorly (t=2.583,2.696;P<0.05).Conclusion There are characteristic changes in the appearance of upper airway and the position of hyoid bone in mixed dentition children with skeletal classmalocclusion.

  4. Comparative evaluation of slot versus dovetail design in class III composite restorations in primary anterior teeth

    Directory of Open Access Journals (Sweden)

    Arun Rathnam

    2010-01-01

    It was concluded from the results that the both slot and dovetail types of cavity preparations were equally effacious when clinically reviewed for a period of 12 months. Hence the use of slot type of cavity preparation with reduced loss of the tooth structure is indicated for class III cavities in primary anterior teeth.

  5. Lanthanide(III) Complexes of DOTA-Glycoconjugates: A Potential New Class of Lectin-Mediated Medical Imaging Agents

    OpenAIRE

    André, João P.; Geraldes, Carlos F. G. C.; Martins, José A.; Merbach, André E.; Prata, Maria I. M.; Santos, Ana C; Lima, João J. P. de; Tóth, Éva

    2004-01-01

    The synthesis and characterization of a new class of DOTA (1,4,7,10-tetrakis(carboxymethyl)-1,4,7,10-tetraazacyclododecane) monoamide-linked glycoconjugates (glucose, lactose and galactose) of different valencies (mono, di and tetra) and their Sm(III), Eu(III) and Gd(III) complexes are reported. The proton NMR spectrum of Eu(III)-DOTALac(III) shows the predominance of a single structural isomer of square antiprismatic geometry of the DOTA chelating moiety and fast ...

  6. Estudo cefalométrico comparativo dos espaços naso e bucofaríngeo nas más oclusões Classe I e Classe II, Divisão 1, sem tratamento ortodôntico, com diferentes padrões de crescimento A Comparative cephalometric study of the naso and oropharyngeal space in malocclusions Class I and Class II Division 1, without orthodontic treatment with different growth patterns

    Directory of Open Access Journals (Sweden)

    Nadyr M. Penteado Virmond Alcazar

    2004-08-01

    Full Text Available A finalidade deste estudo foi comparar os espaços aéreos naso e bucofaríngeo em indivíduos com má oclusão Classe I e Classe II, divisão 1, segundo Angle, do gênero masculino e feminino, com idade média de 11 anos e 6 meses, com padrão de crescimento normal e vertical, não tratados ortodonticamente. A amostra desse estudo foi dividida em dois grupos: 40 pacientes apresentando Classe I e 40 pacientes com Classe II, divisão 1, cada grupo subdividido de acordo com o padrão de crescimento facial: normal e vertical. Os espaços aéreos naso e bucofaríngeo foram avaliados segundo a análise de McNamara Jr., pelas medidas NFa-NFp e BFa-BFp. A análise dos resultados obtidos revelou que, a medida do espaço bucofaríngeo para Classe I com padrão de crescimento vertical e para o espaço nasofaríngeo para Classe II com padrão normal de crescimento apresentaram-se semelhantes à medida padrão da amostra de McNamara Jr.. As outras medidas apresentaram-se estatisticamente menores. Na comparação entre os grupos, o espaço nasofaríngeo no grupo Classe I com padrão de crescimento vertical, apresentou-se menor do que nos grupos Classe I e grupo Classe II divisão 1, ambos com padrão de crescimento normal. O espaço bucofaríngeo não sofreu alteração significante de um grupo para outro. Em relação à hipertrofia da tonsila faringeana, apenas o grupo Classe I com padrão de crescimento vertical apresentou obstrução; para hipertrofia das tonsilas palatinas, apenas o grupo Classe I com padrão de crescimento vertical e Classe II com padrão de crescimento normal apresentou hipertrofia das tonsilas palatinas.The aim of this study is to compare the naso and oropharyngeal air space in people with malocclusion class I and class II division 1, according to Angle, with mean age from 8 to 15 years old with normal and vertical growth pattern not treated orthodontically. This study was divided into two groups: 40 patients with class I, and 40

  7. Data on HLA class I/II profile in Brazilian pemphigus patients.

    Science.gov (United States)

    Franco Brochado, Maria José; Nascimento, Daniela Francisca; Saloum Deghaide, Neifi Hassan; Donadi, Eduardo Antonio; Roselino, Ana Maria

    2016-09-01

    Pemphigus are blistering autoimmune diseases related with genetic and environmental factors. Here we describe HLA genotyping in pemphigus patients. First, we review the HLA class I/II data on pemphigus reported in Brazilian samples and then present the HLA class I (-A, -B, -C) and class II (-DRB1, -DQA1, -DQB1) alleles related to susceptibility/resistance to pemphigus by comparing 86 patients with pemphigus foliaceus, 83 patients with pemphigus vulgaris, and 1592 controls from the northeastern region of the state of São Paulo, Southeastern Brazil. The data presented here are related to the manuscript "Differential HLA class I and class II associations in Pemphigus Foliaceus and Pemphigus Vulgaris patients from a prevalent Southeastern Brazilian region" Brochado et al. (2016) [1]. PMID:27331116

  8. Mandibular movement characteristics in patients with skeletal classmalocclusion during chewing movement%骨性Ⅲ类错(牙合)患者咀嚼时下颌运动特点的初步研究

    Institute of Scientific and Technical Information of China (English)

    许妍; 杨晓江; 高晓辉

    2009-01-01

    目的:研究成人骨性Ⅲ类错患者咀嚼不同食物时的下颌运动.方法: 对成人骨性Ⅲ类错伴下颌偏斜患者14 例,不伴有下颌偏斜患者10 例,以及10 例正常对照组,利用下颌定位仪测量咀嚼运动时双侧髁突运动中心点以及切牙点在矢状向、冠状向、水平向的移动范围的面积比值.结果: 咀嚼软食时,从矢状方向和水平方向看,偏斜组双侧髁突点的运动轨迹与非偏斜组和正常组差异显著(P<0.05),而3 组样本切牙点运动轨迹的差异无统计学意义.咀嚼脆食时, 3 组样本在三个方向上的差异更加明显.咀嚼韧食时,在矢状方向上偏斜组偏斜侧髁突点和切牙点运动面积比值明显高于非偏斜组和正常组(P<0.01),而非偏斜侧髁突点运动面积比值仅明显高于正常组(P<0.05).结论: 成人骨性Ⅲ类错患者下颌运动受食物形态和质地的影响相对较大,下颌偏斜患者尤为明显.%Objective: To investigate mandibular movement characteristics in patients with skeletal classmalocclusion during chewing different foods. Methods: 14 skeletal class Ⅲ adult patients with mandibular asymmetry, 10 patients without mandibular asymmetry and 10 normal control cases were chosen to find out the different condylar and incisor movement area ratio based on the aid of ARCUSdigma mandibular moving track analysis system. Results: First,during chewing soft food, the condylar tracing length of skeletal class Ⅲ adult patients with mandibular asymmetry were significant different in sagittal and horizontal plane compared with the other two groups(P<0.05), while the incisor point trajectory difference was not statistically significant. Second, the condylar and incisor movement characteristic showed much more different among three samples during chewing brittle food(P<0.05). Third, in sagittal plane, the deflective condylar movement area ratio was significantly higher than that of the other two groups

  9. 76 FR 71600 - Renewal of Agency Information Collection for Class III Tribal-State Gaming Compact Process...

    Science.gov (United States)

    2011-11-18

    ... Bureau of Indian Affairs Renewal of Agency Information Collection for Class III Tribal- State Gaming... collection of information for the Class III Tribal State Gaming Compact Process. The information collection....eop.gov . Please send a copy of your comments to Paula L. Hart, Director, Office of Indian...

  10. Evaluation of hyoid bone position and its correlation with pharyngeal airway space in different types of skeletal malocclusion

    Directory of Open Access Journals (Sweden)

    Nidhin Philip Jose

    2014-01-01

    Full Text Available Introduction: The hyoid bone and its relation with the pharyngeal space in health and disease has been an intriguing subject for years. Aim: This study attempts to evaluate the hyoid bone position and to ascertain any correlations with pharyngeal airway space in skeletal class I, II, and III malocclusions. Materials and Methods: McNamara′s airway analysis was carried out to assess the upper and lower airway widths and Hyoid triangle analysis by Bibby and Preston was carried out to determine the position of the hyoid bone. Conclusion: A positive correlation was found between the lower airway and horizontal distance from the hyoid bone to the retrognathion in class I skeletal pattern with average growth pattern.

  11. Profil jaringan lunak wajah kasus borderline maloklusi klas I pada perawatan ortodonti dengan dan tanpa pencabutan gigi (Facial soft tissue profile on borderline class I malocclusion in orthodontic treatment with or without teeth extraction

    Directory of Open Access Journals (Sweden)

    Pinandi Sri Pudyani

    2013-12-01

    Full Text Available Background: Determination of orthodontic treatment plan with or without teeth extraction remains controversial, especially in borderline cases, so it requires more data and information to establish appropriate treatment plans in order to obtain optimal treatment results. Purpose: The study was aimed to determine the facial soft tissue changes in the borderline class I cases treated with and without tooth extraction on post-orthodontic treatment. Methods: The study was conducted on 28 lateral cephalograms, divided into two groups; 13 cases with tooth extraction, and 15 cases without tooth extraction. The subject criterias were as follows; class I malocclusion treated with straightwire technique, skeletal class I, in range of age between 18 to 30 years old, normal overjet 2-4 mm, arch length discrepancy between 2.5 to 5 mm, Index of Fossa Canine (IFC between 37% to 44%, did not using extraoral devices, and treated with teeth extraction of 4 second premolars or without tooth extraction. The measurement of nasolabial angle, labiomental angle, and linear position of the upper and lower lip to E-Ricketts line were done on each cephalogram before and after orthodontic treatment. Results: In teeth extraction cases, there was a change on upper and lower lips positions (p<0.05, but there were no changes on nasolabial angle and labiomental angle (p>0.05. In non teeth extraction cases, there were no changes in nasolabial angle, labiomental angle, and lips positions (p>0.05. Both of groups also have indicated that there were no changes on linear position of the upper and lower lip (p>0.05. Post-orthodontic treatment indicated a significant differences between extraction and nonextraction cases on nasolabial and labiomental angle, and lips position (p<0.05. Conclusion: The facial soft tissue profile changes on teeth extraction case was more retruded than non- teeth extraction case.Latar belakang: Penentuan rencana perawatan ortodonti dengan pencabutan atau

  12. PENGGUNAAN FACE-MASK & EKSPANSI PALATAL PADA PERAWATAN MALOKLUSI KLAS III (Studi Pustaka

    Directory of Open Access Journals (Sweden)

    Krisnawati Krisnawati

    2015-08-01

    Full Text Available Class III skeletal anomaly is one of the most difficult malocclusions to correct in orthodontics. Orthodontist usually involved chincup appliances to restrain mandibular growth, camouflage techniques to advances maxillary incisors and retract mandibular incisors or waiting untul growth ceased to pursue orthognathic surgery. Many studies found that most of Class III malocclusions were characterized by maxillary retrognathism. In the late 1960s, the Delaire mask was popularized to protract the maxilla. The development of maxillary protraction with facemask and palatal expansion have provided a predictable and effective approach to managing treatment that was once considered difficult. Although no significant difference was found between early or late treatment group, the effect of improvement in facial aesthetics on psychosocial development resulted in a significant advantage for early treatment. However, the effects of face mask therapy should be evaluated over the long term in order to determine the relaps tendency.

  13. The position of hyoid bone after treatment of classmalocclusion with FRⅢ appliance in children%FRⅢ型矫治器矫治安氏Ⅲ类错(牙合)后舌骨位置的对比研究

    Institute of Scientific and Technical Information of China (English)

    朱远平; 彭友俭; 张渝宁; 李宏文

    2011-01-01

    目的:比较FRⅢ型矫治器矫治儿童安氏Ⅲ类错(牙合)畸形前后舌骨位置的变化.方法:选取儿童安氏Ⅲ类错(牙合)患者20 例及正常(牙合)儿童20例,对患者矫治前后的X线头影测量片上的舌骨位置进行对比,并与正常(牙合)者X线头影测量片上的舌骨位置进行对比分析.结果:功能性安氏Ⅲ类错(牙合)组矫治前舌骨位置较正常(牙合)组在舌骨垂直向测量项目中H-FH、H-S、H-Mp距明显减小(P0.05);Ar-H-Me角度明显增大(P0.05).矫治前、后舌骨位置的对比:H-FH、H-S距明显增大(P0.05).结论:经FRⅢ型矫治器矫治后的儿童安氏Ⅲ类错(牙合)患者的舌骨位置与治疗前相比,位置更靠后、靠下,下颌骨与舌骨位置发生了顺时针旋转.%Objective: To compare changes of hyoid bone position before and after treatment of Angel Classmalocclusion with FR Ⅲ appliance in children.Methods: 20 patients with Angle Classmalocclusion at the average age of 9.5 years were treated with FR Ⅲ appliance, the hyoid bone position was analyzed before and after treatment by X-ray film,20 children with normal occlusion were enrroled as the controls.Results: Before treatment, in the vertical the hyoid bone measurements of functional Classmalocclusion compared with those of normal occlusion group the H-FH, H-S and H-Mp were significantly lower(P < 0.01 ); in the horizontal H-Ptm was lower( P < 0.05 ); in the horizontal direction there was no significant difference in H-RGn(P > 0.05 ); in angle measurements ArH-Me increased significantly( P < 0.01 ); After treatment of functional Classmalocclusion compared with normal occlusion group,H-Mp was significantly lower( P < 0.01 ), Ar-H-Me was increased( P < 0.05 ) ;and there was no significant difference in H-FH, H-S,H-Ptm and H-RGn (P > 0.05 ).After treatment H-FH and H-S were increased significantly (P < 0.01 ), H-Ptm was increased (P <0.05), Ar-H-Me was lower(P<0

  14. Gap junctions enhancer combined with Vaughan Williams class III antiarrhythmic drugs, a promising antiarrhythmic method?

    Science.gov (United States)

    Li, Lian-dong; Zhang, Cun-tai; Ruan, Lei; Ni, Ming-ke; Quan, Xiao-qing

    2011-01-01

    Arrhythmias is one of the leading causes of death in the world. Current antiarrhythmic drugs are limited by unsatisfactory efficacy and adverse effects such as proarrhythmias. Reentry mechanism plays an important role in persistence of arrhythmias. Reentry can only continue when reentry path-length is longer than cardiac wavelength which is equal to the product of conduction velocity (CV) and effective refractory period (ERP). Gap junctions uncoupling is associated with proarrhythmic CV slowing and transmural dispersion of repolarization (TDR) increasing in many cardiac diseases. Vaughan Williams class III antiarrhythmic drugs prolong ERP with an augmented TDR which is the main mechanism of the proarrhythmic effects. Gap junctions enhancer can augment CV and diminish TDR. As a result, gap junctions enhancer combined with class III drugs may be a promising antiarrhythmic method.

  15. THERAPEUTIC DIFFICULTIES IN ACHIEVEMENT OF OPTIMAL ROOT COVERAGE AND AESTHETIC IN CLASS III GINGIVAL RECESSION.

    Directory of Open Access Journals (Sweden)

    Christina Popova

    2013-07-01

    Full Text Available The width of the attached gingiva is defined as a distance between the depth of the gingival sulcus or gingival/periodontal pocket to the mucogingival junction. Authors suggest that a minimal amount of attached gingiva is necessary to ensure the gingival health. When the buccal bone plate and gingival tissues are thin and the position of the tooth is too vestibular gingival margin often displaces apically, and gingival recession develops. In the presence of gingival recession and reduced vestibular depth oral hygiene procedures are embarrassed.The definition of class III gingival recession is marginal lack of tissue extended to/or beyond the mucogingival junction with bone and soft tissue loss interdentally or malpositioning of the tooth.Prognosis for class III and IV gingival recession is that only partial coverage can be expected after root coverage procedures - FGG (free gingival graft or connective tissue graft (CTG. Adjunctive surgical techniques would be helpful to achieve better aesthetic outcomes.

  16. Free gingival graft in the treatment of class III gingival recession

    Directory of Open Access Journals (Sweden)

    Remya V

    2008-01-01

    Full Text Available Aim: The purpose of this study was to assess the success and predictability of root coverage and esthetics obtained with free gingival grafts (FGGs in the treatment of early class III gingival recessions for a period of 12 months. Materials and Methods: Ten patients contributed to 12 sites, each with early class III recession with interdental bone loss £4 mm from cemento enamel junction(CEJ. Clinical parameters recorded at baseline and at 1, 6, and 12 months were probing depth (PD, recession depth (RD, recession width (RW, and clinical attachment level (CAL. Results: Reduction of recession resulted in a significant gain in CAL and PD at the end of 12 months. A statistically significant mean root coverage of 41.25 ± 21.07% was obtained at the end of 12 months. A statistically significant improvement in Visual Analog Scale score was seen after a 12-month follow-up period. Conclusion: In a south Indian population, early class III gingival recessions treated with FGG procedures resulted in 40-50% root coverage with fairly acceptable esthetics.

  17. X-Shooter spectroscopy of young stellar objects III. Photospheric and chromospheric properties of Class III objects

    CERN Document Server

    Stelzer, B; Alcala, J M; Manara, C F; Biazzo, K; Covino, E; Rigliaco, E; Testi, L; Covino, S; D'Elia, V

    2013-01-01

    We analyzed X-Shooter/VLT spectra of 24 ClassIII sources from three nearby star-forming regions (sigmaOrionis, LupusIII, and TWHya). We determined the effective temperature, surface gravity, rotational velocity, and radial velocity by comparing the observed spectra with synthetic BT-Settl model spectra. We investigated in detail the emission lines emerging from the stellar chromospheres and combined these data with archival X-ray data to allow for a comparison between chromospheric and coronal emissions. Both X-ray and Halpha luminosity as measured in terms of the bolometric luminosity are independent of the effective temperature for early-M stars but decline toward the end of the spectral M sequence. For the saturated early-M stars the average emission level is almost one dex higher for X-rays than for Halpha: log(L_x/L_bol) = -2.85 +- 0.36 vs. log(L_Halpha/L_bol) = -3.72 +- 0.21. When all chromospheric emission lines (including the Balmer series up to H11, CaII HK, the CaII infrared triplet, and several HeI...

  18. Nonsurgical treatment of adult open bite using edgewise appliance combined with high-pull headgear and class III elastics.

    Science.gov (United States)

    Saito, Isao; Yamaki, Masaki; Hanada, Kooji

    2005-03-01

    This case report describes the effect of a combination of high-pull headgear and Class III elastics on the nonsurgical treatment of an adult open bite. The 19-year 1-month-old Japanese female presented with the anterior open bite of 4.0 mm and mild crowding. She had a skeletal Class II but a Class III molar relationship due to a severe proclination of the mandibular dental arch. Unilateral congenital missing premolars caused a discrepancy between the facial and dental midline. After extraction of two premolars and the impacted mandibular third molars, nonsurgical therapy was performed using the standard edgewise appliance combined with a high-pull headgear and Class III elastics. The successful treatment outcome and stability of the final occlusion indicates that a combination of high-pull headgear and Class III elastics is one of the effective devices in the nonsurgical treatment of open bite and, is especially helpful in uprighting the mandibular dental arch.

  19. The Position of Hyoici Bone in Skeletal Class I, II and III Patients

    Directory of Open Access Journals (Sweden)

    Ravanmehr H

    2000-06-01

    Full Text Available In this investigation, the position of hyoid bone was compared in three skeletal groups of class I, II and III. The study was based on evaluating 77 lateral cephalometric radiographs, 40 girls and 37 boys, which were divided into 3 groups. Group 1, 2, and 3 consist of 26, 25, and 26 radiographs. 19 cephalometric landmarks and 10 planes were used in order to tracing the radiographs. In all patients, 9 skeletal and 4 cervical vertebrae parameters were measured to determine the hyoid bone. These parameters were compared between three skeletal groups regardless of sex and then, in another statistical analysis, parameters were compared based on patients sex. Statistical analysis showed that in class III patients, the hyoid bone was positioned more anteriorly than two other groups. Also in this group, the hyoid bone had less inclination and it was more horizontal in relation to mandibular plane. In skeletal class II patients this bone was positioned more superiorly than two other groups. Due to these findings it can be concluded that perimandibular muscles and bones could affect the growth of mandible. In addition, comparison of the parameters between two sexes revealed that the hyoid bone was positioned more anteriorly and inferiorly in boys. Also it was shown that in the girls, the position of hyoid bone was closer to the position of this bone in skeletal class I patients.

  20. Lingual frenulum and malocclusion: An overlooked tissue or a minor issue

    Directory of Open Access Journals (Sweden)

    Anna Cecilia Vaz

    2015-01-01

    Full Text Available Context: Tongue-tie (more formally known as ankyloglossia is a congenital anomaly characterized by an abnormally short lingual frenulum, which may restrict mobility of the tongue tip impairing its ability to fulfill its functions. The clinical significance of ankyloglossia is varied; rarely symptomatic to a host of problems including infant feeding difficulties, speech disorders, malocclusions, and others. Aims: The need of this study was to evaluate the occurrence and severity of tongue-tie and its association with the type of malocclusions in two populations and also to correlate the various malocclusion traits with the grades of tongue-tie. Subjects and Methods: A total of 700 school children in the age group of 9-17 years were examined for the presence of tongue-tie, 350 from regular schools and 350 from special schools. The presence was evaluated, measured, and graded into Grades I-V according to Kotlow′s method. The malocclusion was assessed according to Angle′s classification. Severity of crowding was assessed by Little′s irregularity index in each case. Various other malocclusion traits were visually assessed, in relation to the positions of the teeth. Statistical Analysis Used: Spearman′s rank correlation method was used to test the relationship between type of malocclusions, grades of tongue-tie and severity of crowding. Significance was considered at the (P < 0.05 level. Results: Statistically significant differences were seen between grades of tongue-tie and Angle′s types of malocclusion and Spearman′s correlation between them showed negative correlation. The Spearman′s correlation showed a negative correlation between tongue-tie grades and severity of crowding. Conclusions: As the grade of tongue-tie increased, its association with Classes I and II malocclusion decreased. The lower grades of tongue-tie are associated with increased lower incisor crowding. Shorter, tight frenulums are more associated with maxillary

  1. Combined Orthodontic and Surgical Approach in the Correction of a Class III Skeletal Malocclusion with Mandibular Prognathism and Vertical Maxillary Excess Using Bimaxillary Osteotomy

    Directory of Open Access Journals (Sweden)

    George Jose Cherackal

    2013-01-01

    Full Text Available For patients whose orthodontic problems are so severe that neither growth modification nor camouflage offers a solution, surgery to realign the jaws or reposition dentoalveolar segments is the only possible treatment. Surgery is not a substitute for orthodontics in these patients. Instead, it must be properly coordinated with orthodontics and other dental treatments to achieve good overall results. Dramatic progress in recent years has made it possible for combined surgical orthodontic treatment to be carried out successfully for patients with a severe dentofacial problem of any type. This case report provides an overview of the current treatment methodology in managing a combination of asymmetrical mandibular prognathism and vertical maxillary excess.

  2. Eficiência dos protocolos de tratamento em uma e duas fases da má oclusão de Classe II, divisão 1 Efficiency of 1-phase and 2-phase treatment protocols in Class II, division 1 malocclusions

    Directory of Open Access Journals (Sweden)

    Rodrigo Hermont Cançado

    2009-02-01

    quando realizado com o protocolo de tratamento em uma fase.AIM: The purpose of this study was to compare the occlusal outcomes and the efficiency of 1-phase and 2-phase treatment protocols in Class II, division 1 malocclusions. Treatment efficiency was defined as a better dentoalveolar result in a shorter treatment time. METHODS: Class II, division 1 subjects (n = 139 were divided into two groups in agreement with the treatment protocol adopted for Class II correction. Group 1 comprised 78 patients treated with 1-phase treatment protocol (single-stage group at initial and final mean ages of 12.51 (± 1.28 and 14.68 (± 1.49 years. Group 2 comprised 61 patients treated with 2-phase treatment protocol (two-stage group at initial and final mean ages of 11.21 (± 1.21 and 14.70 (± 1.55 years. Lateral cephalometric radiographs were taken at the pretreatment stage to evaluate morphological differences among treatment groups. Evaluations were performed on the initial and final study models of the patients using treatment priority index (TPI. Chi-square tests were used to compare the two groups regarding initial molar Class and gender distribution. Variables regarding occlusal results were compared using independent t-tests. Finally, a multiple linear regression analysis was completed, with total treatment time as the dependent variable to identify clinical factors that predict treatment length for patients with Class II malocclusions. RESULTS: Results demonstrated that similar occlusal outcomes are obtained between 1-phase and 2-phase treatment protocols, but the duration of treatment was significantly smaller in the 1-phase treatment protocol group. CONCLUSION: Based on the results of this investigation, it can be concluded that treatment of Class II, division 1 malocclusions is more efficient with the 1-phase treatment protocol.

  3. 40 CFR Figure C-2 to Subpart C of... - Illustration of the Slope and Intercept Limits for Class II and Class III PM2.5 Candidate...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 5 2010-07-01 2010-07-01 false Illustration of the Slope and Intercept Limits for Class II and Class III PM2.5 Candidate Equivalent Methods C Figure C-2 to Subpart C of Part 53... Methods and Reference Methods Pt. 53, Subpt. C, Fig. C-2 Figure C-2 to Subpart C of Part...

  4. 成人骨性Ⅱ类错牙合不同垂直骨面型前牙区牙槽骨形态的 CBCT 研究%A cone-beam CT study on alveolar bone morphology in anterior teeth area of adult skeletal Classmal-occlusion subjects with different vertical skeletal types

    Institute of Scientific and Technical Information of China (English)

    季海宁; 梁源; 隋珂; 高麒; 丁寅

    2016-01-01

    目的:应用锥形束 CT(CBCT)研究成人骨性Ⅱ类错(牙合)患者前牙区牙槽骨形态特征及垂直骨面型对其的影响。方法:纳入64名成人骨性Ⅱ类错(牙合)患者,对照组选择正常(牙合)15名,进行锥形束 CT 的拍摄,对前牙区牙槽骨各项数据进行对比分析;并将骨性Ⅱ类错(牙合)患者根据垂直骨面型的不同进行分组整理分析。结果:骨性Ⅱ类错(牙合)患者前牙区唇舌侧牙槽骨高度及厚度均低于对照组(P <0.05)。骨性Ⅱ类错(牙合)高角组患者前牙区唇舌侧牙槽骨高度、牙槽骨厚度均低于低角组(P <0.05)。结论:骨性Ⅱ类错(牙合)患者前牙区牙槽骨厚度尤其是切牙区牙槽骨厚度较低,高角组低于低角组。%Objective:To study the alveolar bone morphology in the anterior teeth area of the skeletal Classmalocclusion subjects with different vertical skeletal types.Methods:64 patients with skeletal Classmalocclusion and 15 subjects with normal occlusion were included.The alveolar bone structure of the anterior teeth were observed using CBCT.Results:The labial and lingual alveolar bone height and the alveolar bone thickness of the incisors of the patients were much lower than those of the normal controls.The height of labial and lingual alveolar bone and the alveolar bone thickness of anterior teeth in high-angle subgroup were lower than those in low-angle subgroup.Conclusion:The thickness of the anterior teeth alveolar bone of skeletal Classmalocclusion is low,espe-cially in the high-angle group.

  5. Effects of orthodontic treatment on temporomandibular joint of patients with mixed dentition and skeletal classmalocclusion%替牙晚期骨性Ⅲ类错(牙)矫治对颞下颌关节影响的研究

    Institute of Scientific and Technical Information of China (English)

    敖同江; 袁小平; 杨四维; 黄跃

    2011-01-01

    目的:探讨替牙晚期骨性Ⅲ类错(牙)矫治对颞下颌关节的影响.方法:选择替牙晚期骨性Ⅲ类错(牙)患者32例,施行前方牵引联合直丝弓矫治技术,矫治前后均做Helkimo主诉症状指数分析和头影测量分析.结果:矫治后患者Helkimo指数分布发生了明显改变,Ai 0级比例明显升高,AiⅡ级比例减少为零.矫治后Co-y距、y轴角、ANB角等明显增大(P<0.05);Co-x距、SNB角、NP- FH角等明显减小(P<0.05);且N-S-Ar角、N-S-Go角、N-S-Pg角变化值为依次增加.结论:替牙晚期骨性Ⅲ类错(牙)矫治对患者Helkimo主诉症状有改善作用.矫治后髁突点发生了向后上的位移,下颌生长受到抑制,下颌的位置相对后移,以髁突为中心发生了顺时针旋转.%Objective: To evaluate the effects of orthodontic treatment on temporomandibular joint of patients with mixed dentition and skeletal Classmalocclusion. Methods: 32 patients with skeletal Classmalocclusions and mixed dentition were enrolled. The patients were treated with maxillary protraction and straight wire technique. Helkimo index evaluation was conducted, lateral cephalomet-ric films were taken and linear measurements were performed individually before and after treatment. Results: After treatment, Helki-mo indexes in all patients redistributed. Ai 0 level ratio was significantly increased, Ai Ⅱ grade reduced to the proportion of zero. Co-y, Y axial and ANB were increased (P <0.05). Co-x, SNB, NP-FH decreased (P <0.05) , N-S-Ar, N-S-Go and N-S-Pg increased (P<0.05 or P<0.01). Conclusion: Orthodontic theray is effective in the treatment of classmalocclusion with mix dentition.

  6. Malocclusion and socioeconomic indicators in primary dentition

    Directory of Open Access Journals (Sweden)

    Raulison Vieira de Sousa

    2014-01-01

    Full Text Available The aim of the present study was to determine the prevalence of malocclusion and associations with socioeconomic indicators among preschoolers. A cross-sectional study was conducted with 732 children 3 to 5 years of age in the city of Campina Grande, Brazil. Three dentists underwent a calibration exercise (K = 0.85-0.90 and diagnosed malocclusion based on the criteria proposed by Foster & Hamilton and Grabowski et al. Parents/guardians answered a questionnaire addressing sociodemographic aspects. Data analysis involved descriptive statistics and bivariate Poisson regression (PR; α = 5%. The prevalence of malocclusion was 62.4%. The most frequent types were increased overjet (42.6%, anterior open bite (21% and deep overbite (19.3%. An association was found between malocclusion and age: the prevalence of malocclusion was greater among younger children, with the highest prevalence among 3-year-olds (PR = 1.116; 95%CI = 1.049-1.187. The prevalence of malocclusion was high. Mother's schooling and household income were not associated with malocclusion. Socioeconomic factors were also not associated with the occurrence of malocclusion.

  7. Correlação entre a assimetria clínica e a assimetria radiográfica na Classe II, subdivisão Correlation between photographic asymmetry and radiographic asymmetry in patients with Class II subdivision malocclusion

    OpenAIRE

    Angela Rita Pontes Azevedo; Guilherme Janson; José Fernando Castanha Henriques

    2004-01-01

    O objetivo deste estudo foi avaliar a correlação entre a assimetria clínica e a assimetria radiográfica nos pacientes com Classe II, subdivisão. A amostra consistiu de 42 indivíduos com má oclusão de Classe II, subdivisão completa, com idade média de 15,21 anos. A assimetria clínica foi avaliada medindo-se a diferença relativa da posição espacial dos pontos do tecido mole entre os lados direito e esquerdo em fotografias frontais. A assimetria radiográfica foi avaliada medindo-se a diferença r...

  8. Tratamento de más oclusões de Classe II graves com aparelhos funcionais removíveis e ortodônticos sequenciais: um caso para a avaliação do MOrthRCSEd Management of severe Class II malocclusion with sequential removable functional and orthodontic appliances: a case for MOrthRCSEd examination

    Directory of Open Access Journals (Sweden)

    Larry Ching Fan Li

    2011-10-01

    Full Text Available INTRODUÇÃO: o aparelho funcional é uma forma eficaz de tratar as más oclusões de Classe II esqueléticas em crianças e adolescentes. Um protocolo de avanço mandibular progressivo de 12 meses já demonstrou ser capaz de aumentar o crescimento condilar e melhorar o prognatismo mandibular utilizando o aparelho de Herbst. OBJETIVO: relatar o caso clínico (apresentado como um dos requisitos para aprovação no Exame de Ortodontia para Filiação ao Royal College of Surgeons de Edimburgo* de uma menina chinesa de 11 anos de idade, com 11mm de sobressaliência, tratada na Fase I da terapia de modificação do crescimento, ao longo de 12 meses, utilizando o aparelho Twin Block com um expansor palatal Hyrax e um extrabucal de puxada alta, em um protocolo de avanço mandibular progressivo, seguido pela Fase II da terapia, com um aparelho Edgewise pré-ajustado.INTRODUCTION: Functional appliances are an effective way of treating skeletal Class II malocclusion in children and adolescents. A 12 month step-wise mandibular advancement protocol has been proved to enhance the condylar growth and improve the mandibular prognathism using Herbst appliance. OBJECTIVES: The following case report documented a 11 year-old Chinese girl with 11 mm overjet treated by a Phase I 12-month growth modification therapy using Twin Block appliance with Hyrax palatal expander and high pull headgear in a step-wise mandibular advancement protocol followed by a Phase II preadjusted Edgewise appliance therapy. This is one of the cases submitted for the Membership of Orthodontics Examination of the Royal College of Surgeons of Edinburgh.

  9. Nonalcoholic Fatty Liver Disease Relationship with Metabolic Syndrome in Class III Obesity Individuals

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    A. Cordeiro

    2015-01-01

    Full Text Available Introduction. Obesity is represented mainly by abdominal obesity and insulin resistance (IR, both present in most individuals diagnosed with metabolic syndrome (MS. IR is the key risk factor in the pathogenesis of nonalcoholic fatty liver disease (NAFLD. Objective. To relate NAFLD to MS in class III obese individuals. Methodology. A descriptive cross-sectional study with class III obese individuals, aged ≥ 20–60 years. Blood pressure measurement, weight, height, body mass index (BMI, waist circumference (WC and blood glucose, insulin, high-density lipoprotein cholesterol (HDL-c, and triglycerides data were obtained. HOMA-IR (homeostatic model assessment insulin resistance calculation was carried out with a cutoff value of 2.71 for IR evaluation. The diagnosis of NAFLD was performed by liver biopsy and the diagnosis of MS was performed in accordance with the National Cholesterol Education Program/Adult Treatment Panel III (NCEPATP III. Results. Of the 50 individuals evaluated, 86% were women and BMI means were 45.4 ± 3.6 Kg/m2. The overall individuals had NAFLD, 70% steatosis, and 30% steatohepatitis. The diagnosis of MS occurred in 56% but showed no significant association with NAFLD (P=0.254. Triglycerides (178 ± 65.5 mg/dL and insulin (28.2 ± 22.6 mcU/mL mean values were significantly higher in steatohepatitis (P=0.002 and P=0.042, resp. compared to individuals with steatosis. IR was confirmed in 76% and showed a relationship with NAFLD severity. Conclusion. NAFLD was not related to MS; however, MS components, evaluated in isolation, as well as IR, were related to the presence and severity of NAFLD.

  10. LONG TERM EFFECTS OF SKELETAL CLASS III TREATMENT: A CASE REPORT

    OpenAIRE

    GÜNGÖR, AHMET YALÇIN; Turkkahraman, Hakan

    2013-01-01

    Even class III treatment in pubertal ages is more difficult than treatment of other maloclusions, its results could be change later especially due to late mandibular growth. This case describes stabile results of a patient, at the last period of her growth and development, from 14 to 19 years old. Our patient was a 14.3 years old girl at Ru period of skeletal maturation. Extraorally, patient had a concave profile, lower midline was symmetric, upper midline was 3mm dislocated to right from ...

  11. Correction of transverse maxillary deficiency and anterior open bite in an adult Class III skeletal patient

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    Prerna Hoogan Teja

    2016-01-01

    Full Text Available Transverse maxillary deficiency may be associated with sagittal or vertical problems of the maxilla or mandible. It may contribute to unilateral or bilateral posterior crossbite, anterior dental crowding, and unesthetic black buccal corridors on smiling. An adequate transverse dimension is important for stable and proper functional occlusion. Surgically, assisted rapid palatal expansion has been the treatment of choice to resolve posterior crossbite in skeletally mature patients. The following case report presents an adult Class III skeletal patient with an anterior open bite and bilateral posterior crossbite which was treated by surgically assisted rapid maxillary expansion with satisfactory outcomes.

  12. 骨性Ⅲ类错(牙合)畸形不同拔牙模式矫治的PAR指数评价%Peer assessment rating index analysis of different extraction modality in skeletal Classmalocclusions

    Institute of Scientific and Technical Information of China (English)

    冉屹东; 邹冰爽

    2010-01-01

    Objective To assess the effect of different extraction modalities on treatment outcomes in skeletal Classmalocclusions. Methods One hundred and nine skeletal Class Ⅲ patients (50 males and 59 females) with a mean age of 16.11±4.47 years were collected. The subjects were divided into four groups according to the extraction modality. They were T0 (non-extraction group), T1 (premolar extraction group), T2 (molar extraction group) and T3 (lower incisor extraction group). The PAR (peer assessment rating) index of each of the pre- and post-treatment cast was assessed. The differences of pre- and post-treatment weighed PAR score, reduction in weighed PAR score, percentage reduction in weighed PAR score and the degree of improvement between the four groups were compared. Results (1) Significant differences (P<0.001= of the reduction in weighed PAR score and percentage reduction in weighed PAR score existed between different extraction modality groups. And the order of reduction from high to low was premolar extraction group, molar extraction group, non-extraction group and lower incisor extraction group.(2) There were no "Worse-no different" cases among the four groups. 97 cases were greatly improved and accounted for 89%. There were 12 cases (11%) in improved category. (3) Greatest improvement was found in premolar extraction group and the least improvement was found in lower incisor extraction group. Conclusions Treatment outcomes of the four extraction modalities in skeletal Class Ⅲ were all satisfied. Cautions should be paid in lower incisor extraction.%目的 评价不同拔牙模式对骨性Ⅲ类错(牙合)畸形治疗效果的影响.方法 选择109例骨性Ⅲ类错(牙合)畸形患者,其中男性50例,女性59例,平均年龄16.11岁±4.47岁.根据拔牙模式分为:T0组(不拔牙)、T1组(拔前磨牙)、T2组(拔磨牙)和T3组(拔下切牙).对所有患者治疗前后的模型应用PAR(Peer Assessment Rating)指数进行评价,对各组治疗

  13. Study of Class I and Class III Polyhydroxyalkanoate (PHA) Synthases with Substrates Containing a Modified Side Chain.

    Science.gov (United States)

    Jia, Kaimin; Cao, Ruikai; Hua, Duy H; Li, Ping

    2016-04-11

    Polyhydroxyalkanoates (PHAs) are carbon and energy storage polymers produced by a variety of microbial organisms under nutrient-limited conditions. They have been considered as an environmentally friendly alternative to oil-based plastics due to their renewability, versatility, and biodegradability. PHA synthase (PhaC) plays a central role in PHA biosynthesis, in which its activity and substrate specificity are major factors in determining the productivity and properties of the produced polymers. However, the effects of modifying the substrate side chain are not well understood because of the difficulty to accessing the desired analogues. In this report, a series of 3-(R)-hydroxyacyl coenzyme A (HACoA) analogues were synthesized and tested with class I synthases from Chromobacterium sp. USM2 (PhaCCs and A479S-PhaCCs) and Caulobacter crescentus (PhaCCc) as well as class III synthase from Allochromatium vinosum (PhaECAv). It was found that, while different PHA synthases displayed distinct preference with regard to the length of the alkyl side chains, they could withstand moderate side chain modifications such as terminal unsaturated bonds and the azide group. Specifically, the specific activity of PhaCCs toward propynyl analogue (HHxyCoA) was only 5-fold less than that toward the classical substrate HBCoA. The catalytic efficiency (kcat/Km) of PhaECAv toward azide analogue (HABCoA) was determined to be 2.86 × 10(5) M(-1) s(-1), which was 6.2% of the value of HBCoA (4.62 × 10(6) M(-1) s(-1)) measured in the presence of bovine serum albumin (BSA). These side chain modifications may be employed to introduce new material functions to PHAs as well as to study PHA biogenesis via click-chemistry, in which the latter remains unknown and is important for metabolic engineering to produce PHAs economically. PMID:26974339

  14. Decision making in the treatment of class III furcation: resective therapy? Extraction? Implant?

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    Antonio Wilson Sallum

    Full Text Available The presence of furcation lesions is associated with bone resorption and lack of insertion in the inter-radicular space, and is a condition that considerably increases the risk of dental loss, particularly in the absence of adequate treatment. In this context, the object of some of the therapies is to keep teeth with furcation lesions that are important to dental planning, to re-establish an anatomy that enables the patient to remove dental biofilm from the compromised area. However, the long term maintenance and treatment of molars with Class III furcation lesions continues to be a challenge to dentists during periodontal therapy, since the anatomy of the inter-radicular region makes it difficult for both professionals and patients to gain access to perform adequate and efficient control of dental biofilm. The impossibility of obtaining appropriate decontamination of the area involved during the root scraping process, including by means of surgical access, demands thatdentists have adequate knowledge to determine the correct therapeutic approach during the treatment of teeth with advance inter-radicularbone loss. The aim of the present study was to discuss the treatments available for Class III furcation lesions and relate clinical procedures that could be performed for the treatment of this type of defect.

  15. Influence of orthopedic treatment on hard and soft facial structures of individuals presenting with Class II, Division 1 malocclusion: a comparative study A influência do tratamento ortopédico nas estruturas faciais de indivíduos com má oclusão de Classe II, 1ª Divisão: um estudo comparativo

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    Liliana Ávila Maltagliati

    2004-06-01

    Full Text Available The purpose of this investigation was to comparatively evaluate the cephalometric changes in soft and hard tissues related to treatment of Class II, division 1 malocclusion with activator-headgear and Bionator appliances. Twenty-four individuals formed the activator-headgear group and twenty-five comprised the Bionator group, while other twenty-four presenting the same malocclusion did not receive any intervention and served as controls. Lateral headfilms were taken at the beginning and at the end of the observation period and were digitized with computerized cephalometrics; cephalometric analysis was performed and the results were submitted to statistical test. According to the methodology employed, our findings suggested that both appliances do not significantly alter the growth path, and also they were not able to modify the posterior inferior height and the sagittal and vertical position of the upper lip. The lower lip and the soft menton were only slightly modified by the orthopedic appliances, but the mentolabial sulcus showed a significant decrease in deepness compared to the control group. Of statistical significance, only the anterior inferior hard and soft facial heights and the lower lip height increased more in the treated groups.Esta pesquisa teve por objetivo avaliar, comparativamente, as alterações cefalométricas tegumentares e esqueléticas, decorrentes do tratamento das más oclusões de classe II, 1a divisão, com o ativador combinado com a ancoragem extrabucal e com o bionator. O grupo tratado com o ativador combinado com a ancoragem extrabucal foi composto por 24 indivíduos e o grupo tratado com o bionator compreendeu 25 pacientes, enquanto que outros 24 indivíduos compuseram o grupo controle, apresentando a mesma má oclusão, porém sem terem sido submetidos a nenhuma terapia ortodôntica. Obteve-se telerradiografias laterais de todos os indivíduos no início e final do período de observação que foram digitalizadas

  16. Condyle volume and surface area in young Chinese people with Angle's classmalocclusion:A cone-beam CT study%锥束CT测量安氏Ⅰ类错(牙合)人群下颌髁突的体积和表面积

    Institute of Scientific and Technical Information of China (English)

    冯刚; 周建萍; 吴杨; 周小凤; 戴红卫

    2011-01-01

    BACKGROUND: Condyle Is the growth center of Die mandible, and the size of the condyle is closely associated with themandibular shape; while a variety of joinl diseases can lead to changes in condytar shape.OBJECTIVE: To measure the condyle volume and surface area in young Chinese people with Angle's class I malocclusion bycone-beam CT iCBCT). And to provide a quantitative standards for volumetric and surface measurements of (he mandibularcondyle In Chinese populationMETHODS: Seventy young patients with Angle's class I malocclusion were chosen from the Affiliated Hospital of Stomatology.Chongqing Medical University (age range: 18-28 years; 34 males and 36 females). Inclusive criteria were as follows: patients withsymmetrical faces,' 1' opon type, opening was normal, no joinl snapping, pain and other symptoms. All patients received CBCTexamination, the CT slice used through the Mimics 10.0 for three-dimensional reconstruction of the condyle to measure thecondyle volume, surface area and shape index (ratio of volume and surface area).RESULTS AND CONCLUSION: The condyle volume and surface area in male patients were greater significantly than those infemale patients (P 0.05).The shape index had no difference between male and female patients as well as between the left and right condyle. It is found thatpatients with symmetrical faces and no joint symptoms of malocclusion Angle's class I malocclusion have symmetrical condyle.%背景:髁突是下颌骨的生长中心,髁突的体积大小对下颌骨的形态有着密切的关系,同时各种关节疾病都会导致髁突形态的变化.目的:通过锥束CT测量年轻安氏Ⅰ类错(牙合)人群髁突体积和表面积,为中国人髁突体积和表面积提供正常参考值.方法:从重庆医科大学附属口腔医院正畸科就诊患者中选取年龄在18~28岁之间的年轻安氏Ⅰ类错(牙合)患者70例,男34例,女36例.所取患者脸型左右对称,"↓"开口型,开口度正常,无关节弹响,疼

  17. Achados clínicos e polissonográficos em pacientes com obesidade classe III Clinical and polysomnographic findings in class III obese patients

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    Rodrigo de Paiva Tangerina

    2008-08-01

    Full Text Available A Síndrome da apnéia/hipopnéia obstrutiva do sono (SAHOS apresenta estreita correlação com a obesidade, porém não está estabelecida uma relação linear de gravidade principalmente em relação aos extremos como na obesidade mórbida. OBJETIVO: Avaliar os achados clínicos e polissonográficos em pacientes com obesidade classe III e correlacionar esses achados com a presença da SAHOS. MATERIAIS E MÉTODOS: Foram selecionados consecutivamente 45 pacientes com índice de massa corpórea superior a 40Kg/m2. Todos foram submetidos a anamnese, exame físico antropométrico e polissonografia. Os achados foram comparados entre os pacientes com e sem SAHOS. RESULTADOS: 68,9% dos pacientes eram do sexo feminino e 31,1% do masculino. A idade média foi de 46,5 DP 10,8 anos, a média do IMC foi 49 DP 7Kg/m2 e a média da circunferência cervical foi 43,4 DP 5,1cm. Todos os pacientes eram roncadores habituais e 48,9% tinham queixa de hipersonolência diurna. Os achados polissonográficos mostraram que 77,8% apresentaram índice de apnéia/hipopnéia superior a cinco. Apresentaram correlação com a presença da SAHOS: idade mais jovem (p=0,02 e maior circunferência cervical (p=0,004. CONCLUSÃO: A prevalência de SAHOS foi elevada, ressaltando a importância da sua investigação em pacientes referenciados para cirurgia bariátrica. O principal marcador da SAHOS foi a circunferência cervical.The Obstructive Sleep Apnea/Hipopnea Syndrome (OSAHS is closely related to obesity; a linear relation, however, has not been established, particularly in morbid obesity patients. AIM: To evaluate clinical and polysomnographic findings in a group of class III obese patients, and to relate these findings with the presence or absence of OSAHS. MATERIAL AND METHOD: Forty five patients with body mass indexex (BMI over 40Kg/m2 were selected consecutively. A clinical history, the anthropometric examination and polysomnography were undertaken in all patients. The

  18. Estudo cefalométrico das alterações dentoesqueléticas da má oclusão de Classe II, divisão 1 tratada com o aparelho de Herbst com cantiléver Cephalometric study in patients that displayed Class II, division 1 malocclusion treated with herbst appliance

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    Ana Carla Raphaelli Nahás

    2008-02-01

    (T2 and 33 cephalometric variables were established. RESULTS AND CONCLUSIONS: The statistical comparison between the experimental group and the control group (Student t test showed in short-term fashion, the correction of the initial malocclusion with pronounced dental changes (loss anchorage. The effect in inhibiting the vertical development of the maxillary first molars, essential characteristic to correct the Class II molar relationship and to maintain the craniofacial growth pattern, was shown with the therapy.

  19. Dental malocclusion and body posture in young subjects: A multiple regression study

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    Giuseppe Perinetti

    2010-01-01

    Full Text Available OBJECTIVES: Controversial results have been reported on potential correlations between the stomatognathic system and body posture. We investigated whether malocclusal traits correlate with body posture alterations in young subjects to determine possible clinical applications. METHODS: A total of 122 subjects, including 86 males and 36 females (age range of 10.8-16.3 years, were enrolled. All subjects tested negative for temporomandibular disorders or other conditions affecting the stomatognathic systems, except malocclusion. A dental occlusion assessment included phase of dentition, molar class, overjet, overbite, anterior and posterior crossbite, scissorbite, mandibular crowding and dental midline deviation. In addition, body posture was recorded through static posturography using a vertical force platform. Recordings were performed under two conditions, namely, i mandibular rest position (RP and ii dental intercuspidal position (ICP. Posturographic parameters included the projected sway area and velocity and the antero-posterior and right-left load differences. Multiple regression models were run for both recording conditions to evaluate associations between each malocclusal trait and posturographic parameters. RESULTS: All of the posturographic parameters had large variability and were very similar between the two recording conditions. Moreover, a limited number of weakly significant correlations were observed, mainly for overbite and dentition phase, when using multivariate models. CONCLUSION: Our current findings, particularly with regard to the use of posturography as a diagnostic aid for subjects affected by dental malocclusion, do not support existence of clinically relevant correlations between malocclusal traits and body posture

  20. Prosthetic rehabilitation of severe Siebert′s Class III defect with modified Andrews bridge system

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    Manu Rathee

    2015-01-01

    Full Text Available Prosthetic dentistry involves the replacement of missing and contiguous tissues with artificial substitutes to restore and maintain the oral functions, appearance, and health of the patient. The treatment of edentulous areas with ridge defects poses a challenging task for the dentist. Management of such cases involves a wide range of treatment options comprising mainly of surgical interventions and non surgical techniques such as use of removable, fixed or fixed- removable partial dentures. But each treatment plan undertaken should be customized according to patient needs. A variety of factors such as quality and quantity of existing contiguous hard and soft tissues, systemic condition and economic status of the patient play an important role in treatment planning, clinical outcome and prognosis. This case report presents the restoration of a Seibert′s Class III ridge defect by an economical modification of Andrews Bridge in a 32 Year old patient.

  1. Prosthetic rehabilitation of severe Siebert's Class III defect with modified Andrews bridge system.

    Science.gov (United States)

    Rathee, Manu; Sikka, Neha; Jindal, Sahil; Kaushik, Ashutosh

    2015-03-01

    Prosthetic dentistry involves the replacement of missing and contiguous tissues with artificial substitutes to restore and maintain the oral functions, appearance, and health of the patient. The treatment of edentulous areas with ridge defects poses a challenging task for the dentist. Management of such cases involves a wide range of treatment options comprising mainly of surgical interventions and non surgical techniques such as use of removable, fixed or fixed- removable partial dentures. But each treatment plan undertaken should be customized according to patient needs. A variety of factors such as quality and quantity of existing contiguous hard and soft tissues, systemic condition and economic status of the patient play an important role in treatment planning, clinical outcome and prognosis. This case report presents the restoration of a Seibert's Class III ridge defect by an economical modification of Andrews Bridge in a 32 Year old patient. PMID:25821362

  2. Structural diversity and transcription of class III peroxidases from Arabidopsis thaliana.

    Science.gov (United States)

    Welinder, Karen G; Justesen, Annemarie F; Kjaersgård, Inger V H; Jensen, Rikke B; Rasmussen, Søren K; Jespersen, Hans M; Duroux, Laurent

    2002-12-01

    Understanding peroxidase function in plants is complicated by the lack of substrate specificity, the high number of genes, their diversity in structure and our limited knowledge of peroxidase gene transcription and translation. In the present study we sequenced expressed sequence tags (ESTs) encoding novel heme-containing class III peroxidases from Arabidopsis thaliana and annotated 73 full-length genes identified in the genome. In total, transcripts of 58 of these genes have now been observed. The expression of individual peroxidase genes was assessed in organ-specific EST libraries and compared to the expression of 33 peroxidase genes which we analyzed in whole plants 3, 6, 15, 35 and 59 days after sowing. Expression was assessed in root, rosette leaf, stem, cauline leaf, flower bud and cell culture tissues using the gene-specific and highly sensitive reverse transcriptase-polymerase chain reaction (RT-PCR). We predicted that 71 genes could yield stable proteins folded similarly to horseradish peroxidase (HRP). The putative mature peroxidases derived from these genes showed 28-94% amino acid sequence identity and were all targeted to the endoplasmic reticulum by N-terminal signal peptides. In 20 peroxidases these signal peptides were followed by various N-terminal extensions of unknown function which are not present in HRP. Ten peroxidases showed a C-terminal extension indicating vacuolar targeting. We found that the majority of peroxidase genes were expressed in root. In total, class III peroxidases accounted for an impressive 2.2% of root ESTs. Rather few peroxidases showed organ specificity. Most importantly, genes expressed constitutively in all organs and genes with a preference for root represented structurally diverse peroxidases (< 70% sequence identity). Furthermore, genes appearing in tandem showed distinct expression profiles. The alignment of 73 Arabidopsis peroxidase sequences provides an easy access to the identification of orthologous peroxidases

  3. 不同磨牙关系的安氏II类错(牙合)上下颌牙量关系的对比研究%Comparison of lntermaxillary Tooth Size Discrepancies between Angle ClassMalocclusion of Different Molar Reiationship.

    Institute of Scientific and Technical Information of China (English)

    马宁; 郑旭; 陈晓红

    2011-01-01

    目的:通过比较不同磨牙关系的安氏II类错(牙合)Bolton指数及Bolton不调量,探讨不同磨牙关系的安氏II类错(牙合)患者在上下颌牙量关系方面的差异.方法:以安氏II错(牙合)162例为研究对象,按照磨牙关系不同分为磨牙关系远中尖对尖组(简称尖对尖组)114例,磨牙关系完全远中组(简称完全远中组)48例,分别对其模型进行牙冠宽度测量,计算Bolton指数,再根据Bolton指数正常值获取上颌Bolton不调量.两组之间进行统计学分析.结果:完全远中组全牙、前牙Bolton指数比值均大于尖对尖组,有统计学差异(P<0.05).两组错(牙合)间全牙Bolton不调的分布比率表现出统计学差异(P<0.05).而前牙Bolton不调的分布比率未表现出统计学差异.两组错(牙合)间Bolton不调量总和与Bolton不调程度的分布比率的比较未表现出统计学差异.结论:不同磨牙关系的安氏II类错牙合畸形在上下颌牙量关系方面存在差异,在治疗时应该加以重视.%Objective: To compare the Bolton index and Bolton tooth size discrepancies between Angle classmalocclusion of different molar relationship.Methods: 162 casts of Classmalocclusion were selected which include 114 cases with cusp to cusp class Ⅱ relationship (cusp to cusp group) and 48 cases with full distal molar relationship (full distal group).Mesiodistal width of teeth were measured and Bolton index was calculated.Then by Bolton rate standards, the tooth size discrepancies were calculated.Statistical analysis were made between these two groups.Results: The total and anterior Bolton index in the full distal group were significant[y larger than in the cusp to cusp group (P<0.05).There was significant difference of the incidence of abnormal tolal Bolton index between the two classes(P<0.05), and there was no significant difference of the incidence of abnormal anterior Bolton index.There were no significant differences of Bolton tooth

  4. The Quantum Mixed-Spin Heme State of Barley Peroxidase: A Paradigm for Class III Peroxidases

    Energy Technology Data Exchange (ETDEWEB)

    Howes, B.D.; Ma, J.; Marzocchi, M.P.; Schiodt, C.B.; Shelnutt, J.A.; Smulevich, G.; Welinder, K.G.; Zhang, J.

    1999-03-23

    Electronic absorption and resonance Raman (RR) spectra of the ferric form of barley grain peroxidase (BP 1) at various pH values both at room temperature and 20 K are . reported, together with EPR spectra at 10 K. The ferrous forms and the ferric complex with fluoride have also been studied. A quantum mechanically mixed-spin (QS) state has been identified. The QS heme species co-exists with 6- and 5-cHS heroes; the relative populations of these three spin states are found to be dependent on pH and temperature. However, the QS species remains in all cases the dominant heme spin species. Barley peroxidase appears to be further characterized by a splitting of the two vinyl stretching modes, indicating that the vinyl groups are differently conjugated with the porphyrin. An analysis of the presently available spectroscopic data for proteins from all three peroxidase classes suggests that the simultaneous occurrence of the QS heme state as well as the splitting of the two vinyl stretching modes is confined to class III enzymes. The former point is discussed in terms of the possible influences of heme deformations on heme spin state. It is found that moderate saddling alone is probably not enough to cause the QS state, although some saddling maybe necessary for the QS state.

  5. Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

    Energy Technology Data Exchange (ETDEWEB)

    Merigue, Luciana Fonseca; Oltramari-Navarro, Paula Vanessa Pedron; Alemida, Marcio Rodrigues [Universidade do Norte do Parana (UNOPAR), Londrina, PR (Brazil). Faculdade de Odontologia; Conti, Ana Claudia de Castro Ferreira [Universidade do Sagrado Coracao (USC), Bauru, SP (Brazil). Faculdade de Odontologia; Navarro, Ricardo de Lima, E-mail: accfconti@uol.com.br [Universidade Estadual de Maringa (UEM), Maringa, P (Brazil). Departamento de Odontologia

    2016-06-01

    The aim of this study was to investigate condyle concentricity and morphology, and their association with Class I and II malocclusions (Angle). The sample consisted of 49 individuals of both genders, between 11 and 35 years old, divided into two groups, G1: 26 patients with Class I malocclusion, and G2: 23 patients with Class II malocclusion, selected for orthodontic treatment. Evaluation of the condyle morphology and position was performed by the same previously calibrated examiner using cone-beam computed tomography (CBCT) images of the subjects. The CBCT scans were analyzed by means of a 3D program (Dolphin 11.5, Dolphin Imaging and Management Solutions, Chatsworth, CA, USA), with a 25% level of sensitivity. The images obtained from the coronal slices were employed for the condyle morphology analysis, which classified the condyle form as rounded, as flat or convex, and as triangular or angled. The sagittal slices were used to classify further the condyles as concentric and displaced anteriorly or posteriorly. A clinical examination was also performed, including TMJ and muscle palpation. The kappa test was used to evaluate investigator calibration; the Chi-square and paired t-tests were used for analysis. The convex and anteriorly positioned condyles were found most frequently, regardless of the type of malocclusion. No association was observed between the groups regarding condylar characteristics. (author)

  6. Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

    Directory of Open Access Journals (Sweden)

    Luciana Fonseca MERIGUE

    2016-01-01

    Full Text Available Abstract The aim of this study was to investigate condyle concentricity and morphology, and their association with Class I and II malocclusions (Angle. The sample consisted of 49 individuals of both genders, between 11 and 35 years old, divided into two groups, G1: 26 patients with Class I malocclusion, and G2: 23 patients with Class II malocclusion, selected for orthodontic treatment. Evaluation of the condyle morphology and position was performed by the same previously calibrated examiner using cone-beam computed tomography (CBCT images of the subjects. The CBCT scans were analyzed by means of a 3D program (Dolphin 11.5, Dolphin Imaging & Management Solutions, Chatsworth, CA, USA, with a 25% level of sensitivity. The images obtained from the coronal slices were employed for the condyle morphology analysis, which classified the condyle form as rounded, as flat or convex, and as triangular or angled. The sagittal slices were used to classify further the condyles as concentric and displaced anteriorly or posteriorly. A clinical examination was also performed, including TMJ and muscle palpation. The kappa test was used to evaluate investigator calibration; the Chi-square and paired t-tests were used for analysis. The convex and anteriorly positioned condyles were found most frequently, regardless of the type of malocclusion. No association was observed between the groups regarding condylar characteristics.

  7. Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

    International Nuclear Information System (INIS)

    The aim of this study was to investigate condyle concentricity and morphology, and their association with Class I and II malocclusions (Angle). The sample consisted of 49 individuals of both genders, between 11 and 35 years old, divided into two groups, G1: 26 patients with Class I malocclusion, and G2: 23 patients with Class II malocclusion, selected for orthodontic treatment. Evaluation of the condyle morphology and position was performed by the same previously calibrated examiner using cone-beam computed tomography (CBCT) images of the subjects. The CBCT scans were analyzed by means of a 3D program (Dolphin 11.5, Dolphin Imaging and Management Solutions, Chatsworth, CA, USA), with a 25% level of sensitivity. The images obtained from the coronal slices were employed for the condyle morphology analysis, which classified the condyle form as rounded, as flat or convex, and as triangular or angled. The sagittal slices were used to classify further the condyles as concentric and displaced anteriorly or posteriorly. A clinical examination was also performed, including TMJ and muscle palpation. The kappa test was used to evaluate investigator calibration; the Chi-square and paired t-tests were used for analysis. The convex and anteriorly positioned condyles were found most frequently, regardless of the type of malocclusion. No association was observed between the groups regarding condylar characteristics. (author)

  8. Long maximal incremental tests accurately assess aerobic fitness in class II and III obese men.

    Directory of Open Access Journals (Sweden)

    Stefano Lanzi

    Full Text Available This study aimed to compare two different maximal incremental tests with different time durations [a maximal incremental ramp test with a short time duration (8-12 min (STest and a maximal incremental test with a longer time duration (20-25 min (LTest] to investigate whether an LTest accurately assesses aerobic fitness in class II and III obese men. Twenty obese men (BMI≥35 kg.m-2 without secondary pathologies (mean±SE; 36.7±1.9 yr; 41.8±0.7 kg*m-2 completed an STest (warm-up: 40 W; increment: 20 W*min-1 and an LTest [warm-up: 20% of the peak power output (PPO reached during the STest; increment: 10% PPO every 5 min until 70% PPO was reached or until the respiratory exchange ratio reached 1.0, followed by 15 W.min-1 until exhaustion] on a cycle-ergometer to assess the peak oxygen uptake [Formula: see text] and peak heart rate (HRpeak of each test. There were no significant differences in [Formula: see text] (STest: 3.1±0.1 L*min-1; LTest: 3.0±0.1 L*min-1 and HRpeak (STest: 174±4 bpm; LTest: 173±4 bpm between the two tests. Bland-Altman plot analyses showed good agreement and Pearson product-moment and intra-class correlation coefficients showed a strong correlation between [Formula: see text] (r=0.81 for both; p≤0.001 and HRpeak (r=0.95 for both; p≤0.001 during both tests. [Formula: see text] and HRpeak assessments were not compromised by test duration in class II and III obese men. Therefore, we suggest that the LTest is a feasible test that accurately assesses aerobic fitness and may allow for the exercise intensity prescription and individualization that will lead to improved therapeutic approaches in treating obesity and severe obesity.

  9. Treatment of Multiple Adjacent Miller Class III Gingival Recessions with a Modified Tunnel Technique: A Case Series.

    Science.gov (United States)

    Yaman, Duygu; Demirel, Korkud; Aksu, Seden; Basegmez, Cansu

    2015-01-01

    Modified coronally advanced tunnel (MCAT) technique with connective tissue graft (CTG) was used in treating multiple adjacent Miller Class III gingival recessions in nine patients. Clinical evaluations were recorded at baseline and 12 months after surgery. The results showed that 50% of complete root coverage and 78% of mean root coverage were attained 1 year after surgery and interdental space fill was 73% at 12 months. The study demonstrated that CTG using the MCAT technique may be an efficient way to treat multiple adjacent Miller Class III gingival recessions, especially when aiming for interdental space fill. Success, however, seems to be related to the amount of tissue present initially.

  10. A discrepância de tamanho dentário, de Bolton, na oclusão normal e nos diferentes tipos de más oclusões, bem como sua relação com a forma de arco e o posicionamento dentário Bolton tooth size discrepancy in normal occlusion and in different types of malocclusions and its relationship to arch form and tooth positioning

    Directory of Open Access Journals (Sweden)

    Luiz Sérgio Carreiro

    2005-06-01

    Full Text Available Esta pesquisa teve como objetivo geral avaliar a discrepância de tamanho dentário, na oclusão normal e nos diferentes tipos de más oclusões e a sua relação com as medidas que determinam a forma de arco e o posicionamento dentário na região anterior. Para tanto, foram estudados 185 pares de modelos de gesso, divididos em 4 grupos: Grupo 1 (composto por 41 pares com Oclusão Normal, sendo 20 do gênero masculino e 21 do gênero feminino; Grupo 2 (composto por 44 pares com má oclusão de Classe I, divisão 1, sendo 22 do gênero masculino e 22 do gênero feminino; Grupo 3 (composto por 54 pares com má oclusão de Classe II, sendo 28 do gênero masculino e 26 do gênero feminino e Grupo 4 (composto por 46 pares com Classe III, sendo 23 do gênero masculino e 23 do gênero feminino. Observou-se que não ocorreu dimorfismo sexual entre as discrepâncias de tamanho dentário e os diferentes tipos de oclusão dentária; as proporções estabelecidas por Bolton não se aplicaram ao grupo com Oclusão Normal; na Oclusão Normal, Classe I, Classe II e Classe III, houve um predomínio de excesso dentário total (RAZ12 no arco inferior; na Classe I houve uma igualdade na distribuição de excesso dentário anterior (RAZ6 nos arcos superior e inferior; na Oclusão Normal, Classe II e Classe III, ocorreu um predomínio de excesso dentário anterior (RAZ6 no arco inferior, em relação ao arco superior; os excessos dentários não contribuíram na ocorrência das más oclusões e as discrepâncias total e anterior (RAZ12 e RAZ6 não interferiram diretamente nas larguras e comprimentos dos arcos, bem como no posicionamento dos dentes anteriores.The general purpose of this study was to evaluate tooth size discrepancy in normal occlusion and in different malocclusion types and its relationship to measurements which determine arch form and anterior tooth positioning. One hundred and eighty five sets of casts of leucoderms were divided into four groups

  11. 安氏Ⅲ类开《牙合》畸形的正畸治疗及其机械性原理初探%Pleliminary investigation of orthodontic treatment and its mechanic basis in patients with skeletal Angle classmalocclusion combined with open bite

    Institute of Scientific and Technical Information of China (English)

    许跃; 蔡斌; 卢新华

    2009-01-01

    目的 探讨青春前期骨性Ⅲ类开畸形患者的正畸治疗的机械性原理.方法 8例替牙期骨性Ⅲ类开畸形患者,年龄7~9岁,平均(7.9±0.8)岁.患者均为手术适应证但拒绝手术治疗.所有患者接受面罩前牵引、磨牙垫、快速扩弓和固定矫治,结束后随访2年.矫治前后头颅侧位片进行头影测量分析比较.结果 患者获得咬合、功能和面容的全面改善,结果 稳定.与矫治前相比,上颌骨逆时针旋转(5.3±1.7)°(P畸形患者的生长,获得稳定和美观的治疗效果.%Objective To analyze the mechanic basis of orthodontic correction of preadolescence skeletal classmalocclusion combined with open bite, and to summarize helpful experiences for clinical practice. Methods There were 8 preadolescent patients with severe skeletal classmalocclusion combined with open bite [age ranged from 7 to 9 years, mean (7.9±0.8) years]. All the patients had indication of orthognathic surgery, but rejected surgical therapy. The patients received face mask traction, rapid maxillary expand, molar occlusal splint and fix appliance treatment, and were followed up for two years after the treatment. Lateral cephalometric films performed at the beginning and end of treatment were compared using traditional cephalometric analysis. Results All the patients get remarkable and stable improvement in occlusion, oral function and facial aesthetic after the treatment. The changes included the anterior movement and (5.3±1.7)° anticlockwise rotation of the maxilla (P<0.01), (2.6±0.5)° downward-backward rotation of the mandible body (P<0.01) and increase of mandible ramus length, and (5.7±0.4)° inclination of lower incisors when measured to the NB line (P<0.01). Meanwhile, the direction of the facial growth was maintained. Conclusion With the most of mechanic basis of dento-maxillofacial orthopedics, the facial growth direction of the patients with skeletal classmalocclusion combined with open

  12. 成人骨性Ⅲ类错(牙合)患者下切牙区牙槽骨形态特征的CBCT初步研究%A preliminary study on alveolar bone condition around mandibular incisors in adults with skeletal Classmalocclusion using CBCT

    Institute of Scientific and Technical Information of China (English)

    孙伯阳; 王雷; 王光; 杨乐; 倪峰; 丁寅

    2013-01-01

    Objective To study the morphology of alveolar bone around the mandibular incisors in adult patients with skeletal Classmalocclusion.Methods The sample consisted of 17 patients with skeletal Classmalocclusion and 10 normal occlusion subjects.TheCBCT images covering the region ofmandibular incisors were obtained and the data were measured and analyzed.Results ① Alveolar bone thickness(LA+LP3.3±0.6 mm) were thinner than normal groups.Root apex was closer to labial cortical bone than lingual (0.8±0.4 mm)(P<0.01); ② The vertical alveolar bone level,especially at the labial side (LAH5.2 ± 1.3 mm) were significantly reduced than normal group (P<0.01); ③ There were statistically correlations between the mandibular incisors inclination and the alveolar bone thickness,the alveolar bone level at the labial side,the distance between apex to labial bone.Conclusions In skeletal Classmalocclusion adults,the alveolar bone thickness was thinner and the vertical alveolar level at the labial side was lower than normal occlusion ones.They were all correlated with the inclination of lower incisors.Alveolar bone morphology should be considered during lower incisor movements.%目的 研究成人骨性Ⅲ类错(牙合)患者下切牙区牙槽骨形态特征.方法 对17例成人骨性Ⅲ类错(牙合)患者及10例正常(牙合)对照者进行锥体束计算机断层(Cone beam computed tomography,CBCT)技术扫描拍摄,并对相关数据进行测量分析.结果 ①骨性Ⅲ类错(牙合)下切牙区牙槽骨厚度较正常(牙合)者薄(3.3±0.6) mm,其根尖点距唇侧骨皮质距离较近(0.8±0.4)mm(P<0.01);②骨性Ⅲ类错(牙合)牙槽骨附着高度较正常(牙合)者低,尤其是唇侧牙槽附着高度较低(5.2±1.3) mm(P<0.01);③下切牙倾斜度与牙槽骨厚度、唇侧牙槽附着高度、根尖点距唇侧牙槽骨距离具有相关性.结论 骨性Ⅲ类错(牙合)患者的下切牙区牙槽骨厚度较薄,唇侧牙槽骨附着高

  13. 骨性Ⅲ类错(牙合)患者双颌手术后鼻咽及口咽部气道及其周围软硬组织的变化%Changes in nasopharynx, oropharynx, soft and hard tissues around pharyngeal airway after bimaxillary surgery for patients with skeletal Classmalocclusion

    Institute of Scientific and Technical Information of China (English)

    王雷; 韩培辉; 李永明; 陈金武

    2012-01-01

    Objective: To compare the changes of nasopharynx, oropharynx, soft and hard tissues around the pharyngeal airway in the patients with skeletal Class DI malocclusion after bimaxillary surgery. Methods: 19 patients (12 women,7 men,average age:23. 8) with skeletal Class El malocclusion underwent bimaxillary surgery were involved in this study. Cone Beam Computer Tomography ( CBCT) examination was performed 1 week before and 3 months after the surgery. The nasopharynx and oropharynx for volumetric a-nalysis was conducted by the use of 3D CBCT images built by Mimics 10.01. Results: After surgery the oropharynx volume and the pharyngeal airway (including nasopharynx and oropharynx) decreased(P <0.05). On average the oropharynx volume and pharyngeal airway decreased by 8. 37% and 6. 91% respectively. The cross-sectional area behind the soft palate decreased by 19.83% (P < 0.05). The position of the hyoid bone and the morphology of the soft palate changed significantly(P < 0.05). Pharyngeal airway space was correlated with the position of the hyoid bone ( H-X.H-Y) or the morphology of the soft palate(PNS-UT,U-T, UT/ANS). The morphology of the soft palate was correlated with the position of the hyoid bone. Conclusion; Bimaxillary surgery can not prevent pharyngeal airway space from narrowing in the correction of Class M malocclusion.%目的:通过锥形束CT( cone beam computer tomography,CBCT)观察骨性Ⅲ类错(牙合)患者双颌手术后鼻咽及口咽部气道及其周围软硬组织的变化.方法:纳入双颌手术治疗的骨性Ⅲ类错(牙合)患者19例,女性12名,男性7名,平均年龄23.8岁.分别于术前1周及术后3个月拍摄CBCT扫描照片,通过Mimics 10.01建立术前及术后鼻咽、口咽气道三维影像并进行测量.结果:术后患者口咽部容积与气道总容积(包括鼻咽与口咽)均显著减小(p<0.05),口咽部气道容积平均减小8.37%,气道总容积平均减小6.91%.术后软腭处气道横截面积平均减小19

  14. Class III β-tubulin in advanced NSCLC of adenocarcinoma subtype predicts superior outcome in a randomized trial

    DEFF Research Database (Denmark)

    Vilmar, Adam Christian; Santoni-Rugiu, Eric; Sørensen, Jens Benn

    2011-01-01

    Platinum-based doublets are the cornerstone of treatment in advanced non-small-cell lung cancer (NSCLC) and often include vinorelbine or taxanes. A predictive biomarker is greatly needed to select chemotherapy-sensitive patients for these microtubule-interfering agents. Class III ß-tubulin (TUBB3...

  15. Class III β-tubulin in advanced NSCLC of adenocarcinoma subtype predicts superior outcome in a randomized trial

    DEFF Research Database (Denmark)

    Vilmar, Adam Christian; Santoni-Rugiu, Eric; Sørensen, Jens Benn

    2011-01-01

    Platinum-based doublets are the cornerstone of treatment in advanced non-small-cell lung cancer (NSCLC) and often include vinorelbine or taxanes. A predictive biomarker is greatly needed to select chemotherapy-sensitive patients for these microtubule-interfering agents. Class III β-tubulin (TUBB3...

  16. The anaerobic (Class III) ribonucleotide reductase from Lactococcus lactis : Catalytic properties and allosteric regulation of the pure enzyme system

    NARCIS (Netherlands)

    Torrents, Eduard; Buist, Girbe; Liu, Aimin; Eliasson, Rolf; Kok, Jan; Gibert, Isidre; Gräslund, Astrid; Reichard, Peter

    2000-01-01

    Lactococcus lactis contains an operon with the genes (nrdD and nrdG) for a class III ribonucleotide reductase, Strict anaerobic growth depends on the activity of these genes. Both were sequenced, cloned, and overproduced in Escherichia coli, The corresponding proteins, NrdD and NrdG, were purified c

  17. Proteomics computational analyses suggest that the bornavirus glycoprotein is a class III viral fusion protein (γ penetrene

    Directory of Open Access Journals (Sweden)

    Garry Robert F

    2009-09-01

    Full Text Available Abstract Background Borna disease virus (BDV is the type member of the Bornaviridae, a family of viruses that induce often fatal neurological diseases in horses, sheep and other animals, and have been proposed to have roles in certain psychiatric diseases of humans. The BDV glycoprotein (G is an extensively glycosylated protein that migrates with an apparent molecular mass of 84,000 to 94,000 kilodaltons (kDa. BDV G is post-translationally cleaved by the cellular subtilisin-like protease furin into two subunits, a 41 kDa amino terminal protein GP1 and a 43 kDa carboxyl terminal protein GP2. Results Class III viral fusion proteins (VFP encoded by members of the Rhabdoviridae, Herpesviridae and Baculoviridae have an internal fusion domain comprised of beta sheets, other beta sheet domains, an extended alpha helical domain, a membrane proximal stem domain and a carboxyl terminal anchor. Proteomics computational analyses suggest that the structural/functional motifs that characterize class III VFP are located collinearly in BDV G. Structural models were established for BDV G based on the post-fusion structure of a prototypic class III VFP, vesicular stomatitis virus glycoprotein (VSV G. Conclusion These results suggest that G encoded by members of the Bornavirdae are class III VFPs (gamma-penetrenes.

  18. 40 CFR 147.2400 - State-administered program-Class I, II, III, IV, and V wells.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false State-administered program-Class I, II, III, IV, and V wells. 147.2400 Section 147.2400 Protection of Environment ENVIRONMENTAL PROTECTION... between the Washington Department of Ecology and Department of Social and Health Services, Related to...

  19. Class III myosins shape the auditory hair bundles by limiting microvilli and stereocilia growth.

    Science.gov (United States)

    Lelli, Andrea; Michel, Vincent; Boutet de Monvel, Jacques; Cortese, Matteo; Bosch-Grau, Montserrat; Aghaie, Asadollah; Perfettini, Isabelle; Dupont, Typhaine; Avan, Paul; El-Amraoui, Aziz; Petit, Christine

    2016-01-18

    The precise architecture of hair bundles, the arrays of mechanosensitive microvilli-like stereocilia crowning the auditory hair cells, is essential to hearing. Myosin IIIa, defective in the late-onset deafness form DFNB30, has been proposed to transport espin-1 to the tips of stereocilia, thereby promoting their elongation. We show that Myo3a(-/-)Myo3b(-/-) mice lacking myosin IIIa and myosin IIIb are profoundly deaf, whereas Myo3a-cKO Myo3b(-/-) mice lacking myosin IIIb and losing myosin IIIa postnatally have normal hearing. Myo3a(-/-)Myo3b(-/-) cochlear hair bundles display robust mechanoelectrical transduction currents with normal kinetics but show severe embryonic abnormalities whose features rapidly change. These include abnormally tall and numerous microvilli or stereocilia, ungraded stereocilia bundles, and bundle rounding and closure. Surprisingly, espin-1 is properly targeted to Myo3a(-/-)Myo3b(-/-) stereocilia tips. Our results uncover the critical role that class III myosins play redundantly in hair-bundle morphogenesis; they unexpectedly limit the elongation of stereocilia and of subsequently regressing microvilli, thus contributing to the early hair bundle shaping.

  20. Impact of physical activity and fitness in class II and III obese individuals: a systematic review.

    Science.gov (United States)

    Baillot, A; Audet, M; Baillargeon, J P; Dionne, I J; Valiquette, L; Rosa-Fortin, M M; Abou Chakra, C N; Comeau, E; Langlois, M F

    2014-09-01

    The objective of this systematic review was to appraise current knowledge on the impact of physical activity (PA) and physical fitness (PF) on the health of class II and III obese subjects and bariatric surgery (BS) patients. All original studies were searched using four databases (Medline®, Scopus®, CINAHL and Sportdiscus). Two independent investigators selected studies assessing the impact of PA or PF on specific health outcomes (anthropometric parameters, body composition, cardiometabolic risk factors, PF, wellness) in adults with a body mass index ≥35 kg m(-2) or in BS patients. Conclusions were drawn based on a rating system of evidence. From 3,170 papers identified, 40 papers met the inclusion criteria. The vast majority of studies were recently carried out with a predominance of women. Less than one-third of these studies were experimental and only three of them were of high quality. Each study reported at least one beneficial effect of PA or PF. However, a lack of high-quality studies and heterogeneity in designs prevented us from finding high levels of evidence. In conclusion, although results support the importance of PA and PF to improve the health of this population, higher-quality trials are required to strengthen evidence-based recommendations. PMID:24712685

  1. A vacuolar class III peroxidase and the metabolism of anticancer indole alkaloids in Catharanthus roseus

    Science.gov (United States)

    Duarte, Patrícia; Figueiredo, Raquel; Ros Barceló, Alfonso

    2008-01-01

    Plants possess a unique metabolic diversity commonly designated as secondary metabolism, of which the anticancer alkaloids from Catharanthus roseus are among the most studied. Recently, in a classical function-to-protein-to-gene approach, we have characterized the main class III peroxidase (Prx) expressed in C. roseus leaves, CrPrx1, implicated in a key biosynthetic step of the anticancer alkaloids. We have shown the vacuolar sorting determination of CrPrx1 using GFP fusions and we have obtained further evidence supporting the role of this enzyme in alkaloid biosynthesis, indicating the potential of CrPrx1 as a molecular tool for the manipulation of alkaloid metabolism. Here, we discuss how plant cells may regulate Prx reactions. In fact, Prxs form a large multigenic family whose members accept a broad range of substrates and, in their two subcellular localizations, the cell wall and the vacuole, Prxs co-locate with a large variety of secondary metabolites which can be accepted as substrates. How then, are Prx reactions regulated? Localization data obtained in our lab suggest that arabinogalactan proteins (AGPs) and Prxs may be associated in membrane microdomains, evocative of lipid rafts. Whether plasma membrane and/or tonoplast microcompartmentation involve AGPs and Prxs and whether this enables metabolic channeling determining Prx substrate selection are challenging questions ahead. PMID:19704535

  2. Estudo cefalométrico das alturas faciais anterior e posterior, em crianças brasileiras, portadoras de má oclusão Classe I de Angle, na fase de dentadura mista Cephalometric study of the anterior and posterior facial heights in brazilian children, presenting Angle Class I malocclusion, in the mixed dentition

    Directory of Open Access Journals (Sweden)

    Arno Locks

    2005-04-01

    Full Text Available Realizou-se um estudo das alturas faciais anterior e posterior em 79 crianças brasileiras, sendo 46 do gênero feminino e 33 do masculino, com idades de 8 a 11 anos, portadoras de má oclusão Classe I de Angle, na fase de dentadura mista, não submetidas a tratamento ortodôntico. Esta investigação utilizou duas radiografias cefalométricas em norma lateral, de cada criança, com intervalo de 8 a 16 meses entre uma radiografia e outra, para comparação dos dados cefalométricos. Foram estudadas as proporções faciais anteriores, ou seja, a relação entre as dimensões N-Me (AFT, N-ENA (AFS, ENA-Me (AFI e o relacionamento entre as dimensões Ar-GO (AFP e a distância entre o plano palatino ao mento (AFA , isto é, o Índice da Altura Facial (IAF. Os resultados obtidos, possibilitaram constatar que as tendências de crescimento foram equilibradas em todas as situações estudadas; a dimensão altura facial inferior, contribuiu de forma mais significativa, nas alterações observadas na altura facial total; as proporções faciais anteriores se mantiveram em torno de 42% para a altura facial superior e 58% para a altura facial inferior; o índice da altura facial ou se manteve constante em torno de 0,66 ou apresentou uma tendência a aumentar com a idade; não ocorreu dimorfismo sexual com relação às proporções faciais e índice da altura facial.The objective of this study was to evaluate the anterior and posterior facial heights in 79 non orthodontic brazilian children, 46 females and 33 males, from 8 to 11 years old, presenting Angle Class I malocclusion, in the mixed dentition. Two lateral cephalometric radiographs were taken, with a time interval ranging from 8 to 16 months between radiographs in order to compare the cephalometric data. The anterior facial proportions were studied, based in following dimensions: N-Me (AFT, N-ENA (AFS e ENA-Me (AFI. The Facial Height Index (IAF was also evaluated taking in account the relationship

  3. Three-dimensional evaluation of the relationship between dental and basal arch forms in Skeletal Classmalocclusions%骨性Ⅲ类错(牙合)畸形患者下颌牙弓与基骨形态的三维测量研究

    Institute of Scientific and Technical Information of China (English)

    邹薇; 吴佳琪; 许天民; 江久汇

    2013-01-01

    Objective To evaluate the relationship between the dental and arch forms of patients with Skeletal Classmalocclusion using three-dimensional(3-D) virtual models.Methods 3-D graphic representations of mandibular casts from 29 Skeletal Classmalocclusion patients were created using a laser scanning system.Anatomic reference points were subjectively identified and used to represent the dental arch and the arch form of the basal bone.Results For Skeletal Classmalocclusion,a high relationship between the FA(facial axis) and WALA(Will Andrews and Larry Andrew) curves was found.WALA curve's radius of curvature in anterior teeth area was larger than that in FA curve's (rWALA =23.07 > rFA =19.22).In the areas of canine and molar,the coefficients of variations of FA were greater than those of WALA.For both FA and WALA points,the CV of canine areas was larger than the CV of molar areas.Conclusions For Skeletal Classmalocclusion patients,high correlation was found between the dental arch form and the basal arch form which can be reflected by FA and WALA points.The basal arch,represented by WALA points,can be used as a clinical guide in making individualized archwire.Both FA and WALA curves were individual and these individual differences were found largely in canine areas.%目的 对骨性Ⅲ类错(牙合)患者下颌模型进行三维扫描并测量,评估其牙弓形态与基骨形态的相关性及个体差异,以期指导临床治疗.方法 选取29例骨性Ⅲ类错(牙合)患者下颌模型进行激光扫描,建立三维模型.对下颌右侧第一磨牙至下颌左侧第一磨牙的FA点(临床冠中心点)、WALA点(膜龈联合(牙合)方的软组织带处最凸点)进行标定,并分析FA曲线和WALA曲线所对应的牙弓形态与基骨形态.结果 骨性Ⅲ类错(牙合)的下颌FA曲线与WALA曲线显著正相关(r尖牙区=0.616;r磨牙区=0.818).前牙区WALA曲线的曲率半径(23.07)大于FA曲线的曲率半径(19.22).左右侧尖

  4. Molecular characterization of fruit-specific class III peroxidase genes in tomato (Solanum lycopersicum).

    Science.gov (United States)

    Wang, Chii-Jeng; Chan, Yuan-Li; Shien, Chin Hui; Yeh, Kai-Wun

    2015-04-01

    In this study, expression of four peroxidase genes, LePrx09, LePrx17, LePrx35 and LePrxA, was identified in immature tomato fruits, and the function in the regulation of fruit growth was characterized. Analysis of amino acid sequences revealed that these genes code for class III peroxidases, containing B, D and F conserved domains, which bind heme groups, and a buried salt bridge motif. LePrx35 and LePrxA were identified as novel peroxidase genes in Solanum lycopersicum (L.). The temporal expression patterns at various fruit growth stages revealed that LePrx35 and LePrxA were expressed only in immature green (IMG) fruits, whereas LePrx17 and LePrx09 were expressed in both immature and mature green fruits. Tissue-specific expression profiles indicated that only LePrx09 was expressed in the mesocarp but not the inner tissue of immature fruits. The effects of hormone treatments and stresses on the four genes were examined; only the expression levels of LePrx17 and LePrx09 were altered. Transcription of LePrx17 was up-regulated by jasmonic acid (JA) and pathogen infection and expression of LePrx09 was induced by ethephon, salicylic acid (SA) and JA, in particular, as well as wounding, pathogen infection and H2O2 stress. Tomato plants over-expressing LePrx09 displayed enhanced resistance to H2O2 stress, suggesting that LePrx09 may participate in the H2O2 signaling pathway to regulate fruit growth and disease resistance in tomato fruits. PMID:25703772

  5. Influence of the socioeconomic status on the prevalence of malocclusion in the primary dentition

    Directory of Open Access Journals (Sweden)

    Thiene Silva Normando

    2015-02-01

    Full Text Available OBJECTIVE: To assess the influence of socioeconomic background on malocclusion prevalence in primary dentition in a population from the Brazilian Amazon. METHODS: This cross-sectional study comprised 652 children (males and females aged between 3 to 6 years old. Subjects were enrolled in private preschools (higher socioeconomic status - HSS, n = 312 or public preschools (lower socioeconomic status - LSS, n = 340 in Belém, Pará, Brazil. Chi-square and binomial statistics were used to assess differences between both socioeconomic groups, with significance level set at P < 0.05. RESULTS: A high prevalence of malocclusion (81.44% was found in the sample. LSS females exhibited significantly lower prevalence (72.1% in comparison to HSS females (84.7%, particularly with regard to Class II (P < 0.0001, posterior crossbite (P = 0.006, increased overbite (P = 0.005 and overjet (P < 0.0001. Overall, malocclusion prevalence was similar between HSS and LSS male children (P = 0.36. Early loss of primary teeth was significantly more prevalent in the LSS group (20.9% in comparison to children in the HSS group (0.9%, for both males and females (P < 0.0001. CONCLUSION: Socioeconomic background influences the occurrence of malocclusion in the primary dentition. In the largest metropolitan area of the Amazon, one in every five LSS children has lost at least one primary tooth before the age of seven.

  6. Class III obesity and unwanted pregnancy among women with live births in New York City, 2004-2007.

    Science.gov (United States)

    Garbers, Samantha; Chiasson, Mary Ann

    2013-10-01

    Obesity is associated with numerous adverse health effects for pregnant women and their newborns. Unintended pregnancy is associated with suboptimal prenatal health behaviors and adverse birth outcomes. While research has suggested a link between obesity and unintended pregnancy, the evidence has been contradictory. Research has not focused on women at the highest level of obesity, Class III (body mass index ≥40). Pregnancy Risk Assessment Monitoring System data for 4,161 women in New York City with a live birth from 2004 to 2007 and complete data on pregnancy intention, height, and weight were examined. The primary outcome, having a live birth that resulted from an unwanted pregnancy (not wanted at that time or at any time in the future), was compared across 6 groups of pre-pregnancy body mass index (BMI). Logistic regression models adjusting for sociodemographic factors and stressors during pregnancy were conducted. The proportion of women reporting their pregnancy was unwanted increased with increasing BMI level to a high of 24 % among women with Class III obesity. After adjustment for confounding sociodemographic factors, women classified as Class III obese were significantly more likely than women with normal BMI to report an unwanted pregnancy [AOR = 2.81 (95 % CI: 1.41-5.60)]; this relationship held after adjusting for stressors during pregnancy. No significant association was found for women of other BMI groups. Previous analyses may have masked a relationship between BMI and unwanted pregnancy among women with Class III obesity. Further research exploring underlying mechanisms which are amenable to intervention is of critical public health importance.

  7. Accuracy of Dolphin visual treatment objective (VTO) prediction software on class III patients treated with maxillary advancement and mandibular setback

    OpenAIRE

    Peterman, Robert J.; Jiang, Shuying; Johe, Rene; Mukherjee, Padma M.

    2016-01-01

    Background Dolphin® visual treatment objective (VTO) prediction software is routinely utilized by orthodontists during the treatment planning of orthognathic cases to help predict post-surgical soft tissue changes. Although surgical soft tissue prediction is considered to be a vital tool, its accuracy is not well understood in tow-jaw surgical procedures. The objective of this study was to quantify the accuracy of Dolphin Imaging’s VTO soft tissue prediction software on class III patients tre...

  8. Structure of putrescine aminotransferase from Escherichia coli provides insights into the substrate specificity among class III aminotransferases.

    Directory of Open Access Journals (Sweden)

    Hyung Jin Cha

    Full Text Available YgjG is a putrescine aminotransferase enzyme that transfers amino groups from compounds with terminal primary amines to compounds with an aldehyde group using pyridoxal-5'-phosphate (PLP as a cofactor. Previous biochemical data show that the enzyme prefers primary diamines, such as putrescine, over ornithine as a substrate. To better understand the enzyme's substrate specificity, crystal structures of YgjG from Escherichia coli were determined at 2.3 and 2.1 Å resolutions for the free and putrescine-bound enzymes, respectively. Sequence and structural analyses revealed that YgjG forms a dimer that adopts a class III PLP-dependent aminotransferase fold. A structural comparison between YgjG and other class III aminotransferases revealed that their structures are similar. However, YgjG has an additional N-terminal helical structure that partially contributes to a dimeric interaction with the other subunit via a helix-helix interaction. Interestingly, the YgjG substrate-binding site entrance size and charge distribution are smaller and more hydrophobic than other class III aminotransferases, which suggest that YgjG has a unique substrate binding site that could accommodate primary aliphatic diamine substrates, including putrescine. The YgjG crystal structures provide structural clues to putrescine aminotransferase substrate specificity and binding.

  9. Long-term outcome in a patient with a dentoskeletal open-bite malocclusion treated without extraction.

    Science.gov (United States)

    Celli, Daniel; Gasperoni, Enrico; Deli, Roberto

    2007-01-01

    This case report describes the treatment of a patient with a Class II malocclusion with an anterior open bite. The patient, a girl 16 years of age, had a significant anteroposterior discrepancy and a high-angle tendency. Her face was convex, with competent lips. Intraorally she had an anterior open bite of 3 mm, space in the mandibular arch, and an overjet of 2 mm. High-pull headgear, anterior intermaxillary elastics, and appropriate wire bending were used to close the bite and to correct the anteroposterior dental relationship. Modification of a tongue thrust habit helped to correct this significant malocclusion and provided stability at 11 years posttreatment.

  10. Hard tissue changes between extraction- and nonextraction- group in patients with skeletal Classmalocclusion by orthognathic treatment%拔牙与非拔牙的骨性安氏Ⅲ类双颌手术前后的硬组织变化

    Institute of Scientific and Technical Information of China (English)

    张桦; 杜越英

    2011-01-01

    PURPOSE: The aim of this study was to evaluate the hard tissue changes between extraction - and nonextraction-group in patients with skeletal Class III malocclusion before and after orthognathic treatment. METHODS: Thirty-one patients with maxillary hypoplasia and mandibular prognathism were divided into two groups: a group that consisted of 15 cases with extraction of maxillary premolar and a group that consisted of 16 cases without extraction. All patients were performed maxillary Le Fort I osteotomy and sagittal split ramus osteotomy (SSRO). Data were collected from standardized lateral cephalometric radiographs taken at pretreatment(T1), preoperation(T2) and the completion of treatment (T3). Cephalometric analysis included 9 patients. The data were compared at T1,T2 and T3, respectively, with SAS8.02 software package for grouped t test. RESULTS: There was no significant difference in hard tissue morphology at T1, T2, T3 between extraction- and nonextraction- group(P>0.05), except upper alveolar anglar(UD-SN) at T1, overjet at T2, LIMP at T2 and T3(P<0.05). CONCLUSIONS: Before treatment, upper anterior alveroar bone in extraction group protruded more than nonextraction-group. By extraction and preoperative orthodontic treatment, protrusion was improved before orthognathic surgery. Decompensation of lower incisor in extraction group was greater than nonextraction-group by increasing reverse overjet. Supported by Program for Innovative Research Team of Shanghai Municipal Education Commission.%目的:探讨已行双颌手术的骨性安氏Ⅲ类错(牙合)患者治疗前、正颌手术前正畸后和治疗完成后拔与不拔上颌第一前磨牙的上、下颌骨硬组织结构差异.方法:研究对象为均已行上颌骨Le Fort Ⅰ型前移和下颌骨矢状劈开后退术的骨性安氏Ⅲ类错(牙合)畸形伴上颌骨发育不足和下颌骨发育过度的患者.研究对象被分成两组:术前正畸拔除上颌第一前磨牙组15例,未拔牙组16

  11. Regulation of the Tumor-Suppressor Function of the Class III Phosphatidylinositol 3-Kinase Complex by Ubiquitin and SUMO

    Energy Technology Data Exchange (ETDEWEB)

    Reidick, Christina [Biochemie Intrazellulärer Transportprozesse, Ruhr-Universität Bochum, Bochum 44801 (Germany); El Magraoui, Fouzi; Meyer, Helmut E. [Biomedical Research, Human Brain Proteomics II, Leibniz-Institut für Analytische Wissenschaften-ISAS, Dortmund 44139 (Germany); Stenmark, Harald [Department of Biochemistry, Institute for Cancer Research, Oslo University Hospital, Montebello, Oslo 0310 (Norway); Platta, Harald W., E-mail: harald.platta@rub.de [Biochemie Intrazellulärer Transportprozesse, Ruhr-Universität Bochum, Bochum 44801 (Germany)

    2014-12-23

    The occurrence of cancer is often associated with a dysfunction in one of the three central membrane-involution processes—autophagy, endocytosis or cytokinesis. Interestingly, all three pathways are controlled by the same central signaling module: the class III phosphatidylinositol 3-kinase (PI3K-III) complex and its catalytic product, the phosphorylated lipid phosphatidylinositol 3-phosphate (PtdIns3P). The activity of the catalytic subunit of the PI3K-III complex, the lipid-kinase VPS34, requires the presence of the membrane-targeting factor VPS15 as well as the adaptor protein Beclin 1. Furthermore, a growing list of regulatory proteins associates with VPS34 via Beclin 1. These accessory factors define distinct subunit compositions and thereby guide the PI3K-III complex to its different cellular and physiological roles. Here we discuss the regulation of the PI3K-III complex components by ubiquitination and SUMOylation. Especially Beclin 1 has emerged as a highly regulated protein, which can be modified with Lys11-, Lys48- or Lys63-linked polyubiquitin chains catalyzed by distinct E3 ligases from the RING-, HECT-, RBR- or Cullin-type. We also point out other cross-links of these ligases with autophagy in order to discuss how these data might be merged into a general concept.

  12. Comparison of Tooth Size Discrepancy in Cl II Malocclusion Patients with Normal Occlusions

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    Moradi M.

    2012-12-01

    Full Text Available Statement of Problem: There must be a proper mesiodistal tooth size ratio (Bolton analysis between maxillary and mandibular teeth for good occlusal interdigitation. Therefore the Bolton analysis should be considered during diagnosis, treatment planning and predication of ultimate results.Purpose: The purpose of this study was to appraise tooth size ratios in Cl II malocclusion group and compare them with normal individuals. Materials and Method: This study was carried out on 60 pre-treatment orthodontic casts of class II malocclusion patients and 60 diagnostic casts of normal occlusion individuals which were selected through cluster sampling in accordance with the selective criteria. Each group consisted of 30 men and 30 women. The greatest mesiodistal diameters of all the teeth on each cast were measured by a digital calliper with 0.01mm accuracy except the second and third molars. Then tooth size ratios were analyzed as Bolton described. The statistical analysis were performed by chi-square and t-tests using SPSS. Results: The prevalence of anterior and overall tooth size discrepancy was rela-tively high (28.3%, 20%, showing no significant difference between men and women (p> 0.05. The mean of anterior and overall tooth- size ratios in Cl II malocclusion group were 79.18 and 92.39 respectively, which were statistically different from the Bolton study (ideal occlusion ratios (p 0.05.Conclusion: Considering the high frequency of tooth size discrepancy among CLII patients and the significant difference in Bolton ratios between this malocclusion and ideal occlusions; it seems that tooth size discrepancy can be considered as a possible etiologic factor and Bolton analysis should be performed as a pre-treatment diagnostic tool for this type of malocclusion.

  13. 替牙晚期安氏Ⅲ类错(牙合)畸形矫治后的髁突和下颌位置变化%Effects of orthodontic treatment on the condylar and mandibular positions of patients with classmal-occlusion in mixed dentition

    Institute of Scientific and Technical Information of China (English)

    敖同江; 袁小平; 杨四维; 黄跃

    2012-01-01

    Objective To evaluate the effects of orthodontic treatment on the condylar and mandibular positions of patients with classmalocclusion in mixed dentition. Methods 32 patients with Angle classmalocclu-sions in mixed dentition were chosen. They were treated with maxillary protraction and straight wire technique. Lateral cephalometric films were taken individually before and after treatment, and linear measurement were observed. Statistical analysis was performed using SPSS 16.0 software package. Results Cephalometric radiography: After treatment, SNA, ANS-Ptm, Co-y, Ar-y, Go-y, NSAr, NSGo, NSPog, ArGo'-SN, Y axia, facial angle, ANB, Wits, NA-PA were increased significantly. Co-x, Pog-y, SNB, NP-FH, AB plane angle were decreased significantly (P<0.05). And Ar-y, Go-y, Pog-y change in value before and after correction of the order increases, NSAr, NSGo, NSPog changes in the value of the order also increased. Conclusion A significant backward upward shift of condylar point, inhibition of mandibular forward growth, and clockwise rotation of the mandible were observed, which contribute to the correction of a skeletal class Ⅲ relationship.%目的 探讨矫治替牙晚期安氏Ⅲ类错(牙合)畸形后髁突和下颌位置的变化.方法 选择患有替牙晚期安氏Ⅲ类错(牙合)畸形的患者32例作为研究对象,均行前方牵引联合直丝弓矫治技术矫正,收集患者治疗前后的X线头颅侧位片进行头影测量分析.结果 试验组患者矫治后的鞍角、Y轴角、下颌平面角、上齿槽座点-鼻根点-下齿槽座点角、颌凸角、髁顶点Co到y轴的距离等明显增大,面角、上下齿槽座角、髁顶点Co到x轴的距离、颏前点Pog到y轴的距离等明显减小,且差异具有统计学意义(P<0.05).结论 替牙晚期安氏Ⅲ类错(牙合)患者通过正畸治疗后,下颌骨的生长可受到一定抑制,有效改善了上下颌骨的矢状不调状况,髁突点向后上移位,下颌的位置会发生

  14. Clinical observation of the plane plate in the treatment of Class Ⅱ division 2 malocclusion patients with temporomandibular disorders%安氏Ⅱ类2分类错牙合伴颞下颌关节紊乱病患者的平面导板矫治器临床治疗效果分析

    Institute of Scientific and Technical Information of China (English)

    秦金炜; 张静露; 秦妍; 陈文静

    2015-01-01

    Objective To study the clinical therapeutic effects of plane plate on Class Ⅱ division 2 malocclusion patients with tem-poromandibular disorders (TMD). Methods 20 outpatients who had Class Ⅱ division 2 malocclusion with temporomandibular joint disorders from January 2013 to December 2014 at Jiangsu Provincial Stomatological Hospital of Orthodontics and TMJ Branch were se-lected in this study. All were treated by the plane plates and used United States Myotronics K7 (Neuromuscular Dentistry analysis sys-tem)was used to record their changes of condylar trajectory and vibration frequency before and after using the flat-screen guide appli-ance. Results ①After being treated by plane plate,maximum mouth opening,protrusion and lateral movement all had little changes compared with the previous treatment (P > 0. 05). ②The style of mouth opening was changed after treatment (P < 0. 05). ③Joint vi-brations were statistically changed compared with those before treatment (P < 0. 05). Conclusions The plane plant can lead to open bite on deep overbite patients,improve jaw movement patterns,and relieve related symptoms of temporomandibular diseases,thus provi-ding guidance for clinical treatment.%目的:对患有颞下颌关节紊乱病的安氏Ⅱ类2分类患者给予平面导板矫治器进行治疗,分析其临床效果,为正畸临床提供指导意义。方法选择2013年1月到2014年12月在南京医科大学附属口腔医院就诊的安氏Ⅱ类2分类错牙合伴颞下颌关节紊乱病患者20例,用美国Myotronics K7神经肌肉牙医学分析系统记录每位患者带用平面导板矫治器治疗前、后的下颌运动轨迹及髁突震动频率的变化。结果①平面导板矫治器治疗后下颌的最大张口度、前伸、侧方运动与治疗前相比变化不大,无统计学意义( P >0.05)。②平面导板矫治器治疗后开口型牙合位偏移与治疗前相比结果有统计学意义(P <0.05)。③平面导板

  15. 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

    apical root resorption of the upper first permanent molars submitted to the action of the appliance. METHODS: Were evaluated periapical X-rays of 19 leucoderms young female - with ages between 8 and 10 years, with dental Class II, division 1 malocclusion, before and after orthodontic treatment, using high-pull headgear. The 76 X-rays were divided into two groups according to their root formation. Group A consisted of 18 X-rays with incomplete root formation, except for the palatine root, before treatment and 18 after treatment. Group B consisted of 20 X-rays where root formation was completed before treatment and 20 after treatment. The root lengths were measured with digital caliper and the registered measures were submitted to the error of the method and statistical analysis, Student t test, to verify the differences regarding the root length before and after the treatment with occipital headgear. RESULTS: In group A, there was a significant increase of the root lengths, while in the group B the differences were not significant. Posttreatment Group A showed no significant differences with the mean root lengths of pretreatment group B, in other words, teeth with incomplete root formation at onset of orthodontic treatment presented normal root growth during the active treatment. CONCLUSION: Therefore, it was concluded that high-pull headgear didn't influence negatively in the root formation and it didn't provoke apical resorption of the molars submitted to the action of the appliance, suggesting that occipital headgear doesn't present risks to the root structure and formation when correctly indicated and applied.

  16. Lip prints: The barcode of skeletal malocclusion

    OpenAIRE

    Pradeep Raghav; Naveen Kumar; Shishir Shingh; N K Ahuja; Priyanka Ghalaut

    2013-01-01

    Introduction: In orthodontics, apart from essential diagnostic aids, there are so many soft tissue analyses in which lips are major part of concern. However, lip prints have never been used in orthodontics as diagnostic aid or forensic tool. Therefore, this study was designed to explore the possible association of lip prints with skeletal malocclusion. Materials and Methods: A sample of 114 subjects in the age group of 18-30 years, from North Indian adult population were selected on the basis...

  17. 前方前牵引疗法治疗替牙期骨性Ⅲ类错牙合患儿的头颅影像及外貌变化%Observation on the Efficacy of Anterior Traction Therapy for Osseous ClassMalocclusion in Children at Dental Transitional Period

    Institute of Scientific and Technical Information of China (English)

    经毓瑛; 周彦恒

    2014-01-01

    Objective] To explore the efficacy of anterior traction therapy for osseous classmalocclusion in chil‐dren at dental transitional period .[Methods] A total of 80 pediatric patients with osseous classmalocclusion in dental transitional period at orthodontic department were chosen .According to the severity ,all patients were divided into treat‐ment group and control group with 40 patients in each group .The treatment group underwent anterior traction therapy , while the control group was not given any therapy during the observation .X‐ray lateral projection of cranium was per‐formed in treatment group and control group .The relevant indexes of variables at mandible plane and sagittal level inclu‐ding upper dental alveolus bed(SNA) angle ,bottom dental alveolus bed(SNB) angle ,ANB angle(the difference between SAN angle and SNA angle) ,face angle(FH‐NP) ,vertical distance between AH point and palatal plane(FH‐PP) ,cross angle of upper central incisor long axis to subspinale line(U1/NA) ,the distance between upper central incisor border and the line of nasal point to subspinale(U1‐NA) ,cross angle of long axis of inferior central incisor and NB line(L1/NB) and the distance of long axis of inferior central incisor and NB line(L1‐NB) were measured .[Results]Compared with the con‐trol group ,the SNA angle in treatment group was increased by 1 .370( P < 0 .05) ,and SNB angle was decreased by 1 .800 ,and ANB angle was increased to 3 .390( P <0 .05) ,but FH‐NP and FH‐PP were decreased( P <0 .05) ,and U1/NA was increased by 2 .13mm and increased to 3 .03mm( P<0 .05) ,and L1/NB was reduced by 3 .890 and reduced to 0 .86mm( P<0 .05) .The average amount of rotation of the treatment group and control group was 0 .82 and -0 .66 , respectively .[Conclusion] After anterior traction therapy for patients with osseous classmalocclusion in dental transi‐tional period ,the mandible of patients has clockwise rotation ,and the maxillary mandibular

  18. Serum alkaline phosphatases concentration in adult patients with skeleton classmalocclusion:preliminary results%成人骨性Ⅱ类错牙合畸形患者血清碱性磷酸酶浓度的初步研究

    Institute of Scientific and Technical Information of China (English)

    马艳; 施优灵; 李金超; 刘继光

    2016-01-01

    Objective To explore the concentration and roles of serum alkaline phosphatases ( ALP) in patients with skeleton classmalocclusion. Methods 45 adult patients with skeleton classmalocclusion and 47 age-and sex-matched healthy controls were se-lected in this study, and the concentrations of serum ALP were collected. The difference between experimental and control groups was assessed by independent Student's t-test with SPSS 18. 0 software. Results The serum ALP level in patients and that in healthy con-trols were (41. 62±1. 97)U/L and (65. 83±2. 70)U/L, respectively. The serum ALP level in male patients and that in healthy con-trols were (52.07±4.63)U/L and (68.25±2.65)U/L, whereas that in female patients and that in healthy controls were (36.40± 0. 92)U/L and (64. 04±4. 28) U/L, respectively. The serum ALP level in patients25 years old vs. that in healthy controls was (41. 20±2. 45)U/L vs. (66. 00±3. 35)U/L, and (51. 29±18. 68)U/L vs. (66. 88±11. 76)U/L for males, while (37. 28±5. 56)U/L vs (65. 18±24. 68)U/L for females. The significant statistical difference was observed (P<0. 05). Conclusion The serum ALP level in adult patients with skeleton classmalocclusion is lower than that in healthy controls, suggesting weaker bone metabolism in the patients, which may be resulted from mandibular hypodevelopment.%目的 研究骨性Ⅱ类错牙合畸形患者的血清碱性磷酸酶浓度及意义.方法 选择45例成人骨性Ⅱ类错牙合畸形患者和47例年龄和性别匹配的正常对照成人,检测其血清碱性磷酸酶浓度.应用SPSS 18.0软件对检测值进行成组t检验统计学分析.结果 成人骨性Ⅱ类错牙合畸形患者和正常对照成人的血清ALP浓度分别为(41.62±1.97)U/L和(65.83±2.70)U/L.其中男性骨性Ⅱ类错牙合畸形患者和对照成人的血清ALP浓度分别为(52.07±4.63)U/L和(68.25±2.65)U/L,女性分别为(36.40±0.92)U/L和(64.04±4.28)U/L.25岁以下骨性Ⅱ类错牙合畸形患

  19. CLINICAL APPLICATION OF MICRO -SCREW IMPLANT ANCHORAGE IN TREATMENT OF ANGLE'S CLASS II DIVISION 1 MALOCCLUSION WITH DEEP OVERBURDEN JAWS%微螺钉种植体支抗在 Angle 氏 II 类1分类深覆颌深覆盖牙颌畸形治疗中的临床应用

    Institute of Scientific and Technical Information of China (English)

    张金望

    2015-01-01

    目的:应用微螺钉种植体支抗植入Angle氏II类1分类深覆颌深覆盖牙颌畸形患者上颌牙列,加强支抗,比较其上颌切牙与第一磨牙的位置变化,探讨自攻型微螺钉种植支抗比传统支抗是否具有优越性。方法选择Angle氏II类1分类深覆颌深覆盖患者68例,随机分为研究组和对照组。研究组使用自攻型微型种植钉作为支抗体;对照组使用Nance弓、横腭杆或口外弓联合作为强支抗。比较两组总的治疗时间,及治疗前后X线头影测量的线距和U1/SN的角度差值。结果①微型种植钉保持稳定而无松动,种植体周围软组织健康,无肿胀感染,患者无明显不适。②研究组平均疗程20个月,对照组平均疗程26个月。③研究组患者在软组织侧貌得到显著的改善,上下唇相对于审美平面分别内收4.26 mm和4.54 mm。 U1/SN角减小了10.2°;对照组上下唇相对审美平面分别内收2.88 mm和3.01 mm。两组之间的差异有统计学意义。研究组上颌第一磨牙矫治前后在前后向和垂直向未发生显著性移动( p>0.05),切牙在前后向发生显著性移动,组间的差异有统计学意义( p<0.01)。结论相比传统支抗技术,微螺钉种植支抗能够更好地控制牙齿移动,缩短整个治疗时间。%Objective To assess theapplication values of self -tapping micro-screw implant anchorage in treatment of Angle's class II division 1 malocclusion with deep overburden jaws , compared with the traditional anchor-age.Micro-screw implantswere inserted in maxillary teeth of patients with Angle's class II division 1 malocclusion with deep overburden jaws tostrengthen anchorage .Changesin position of the maxillary incisor and the first molar were compared.Methods 68 cases of Angle's class II division 1 malocclusion with deep overburden jaws were selected and randomly divided into the research group and the control group .The

  20. Estudo comparativo cefalométrico dos padrões dentofaciais de indivíduos portadores de oclusão normal e de más oclusões de Angle Comparative cephalometric study of dentofacial patterns of individuals with normal occlusion and Angle malocclusions

    Directory of Open Access Journals (Sweden)

    Julio César Mota Pereira

    2011-10-01

    Full Text Available OBJETIVO: avaliar os padrões dentofaciais de pacientes portadores de oclusão normal e más oclusões de Angle quanto a possíveis diferenças entre as grandezas estudadas, em relação ao sexo, dentro de cada grupo e entre os grupos. MÉTODOS: a amostra constou de 200 telerradiografias cefalométricas laterais obtidas de jovens brasileiros, de ambos os sexos, na faixa etária de 11 anos e 2 meses a 19 anos e 10 meses, apresentando dentição permanente. O material foi dividido, quanto ao tipo de oclusão, em cinco grupos: um de pacientes portadores de oclusão normal, e quatro de pacientes portadores de más oclusões de Angle, sendo cada grupo dividido igualmente quanto ao sexo. Foram avaliadas grandezas cefalométricas angulares e lineares. RESULTADOS: na grande maioria das grandezas, os sexos masculino e feminino não diferiram; entre os grupos, a posição da maxila não mostrou diferença significativa, o retrognatismo mandibular foi marcante nos grupos de Classe II divisões 1ª e 2ª e foram observados alguns desequilíbrios verticais com diferenças significativas; o padrão foi hipodivergente para os grupos de oclusão normal e Classe II, divisão 2ª, e neutro para os grupos de Classe I; Classe II, divisão 1ª; e Classe III; a compensação dentoalveolar foi evidente nos grupos de Classe III e de Classe II, divisão 2ª; o grupo de oclusão normal apresentou perfil mais convexo que os padrões americanos. CONCLUSÃO: foi possível configurar, de forma geral, algumas características da morfologia facial para alguns tipos de más oclusões. Entretanto, existe a necessidade de avaliar a face individualmente, pois algumas características permeiam entre os diferentes tipos de oclusão.OBJECTIVE: To determine the dentofacial patterns in patients presenting normal occlusion and Angle malocclusions, evaluating the possible differences in the studied measurements, considering the gender, the differences within each group and the

  1. Cone-beam computed tomography based evaluation of rotational patterns of dentofacial structures in skeletal Class III deformity with mandibular asymmetry

    OpenAIRE

    Ryu, Hyeong-Seok; An, Ki-Yong; Kang, Kyung-Hwa

    2015-01-01

    Objective The purpose of this study was to assess rotational patterns of dentofacial structures according to different vertical skeletal patterns by cone-beam computed tomography (CBCT) and analyze their influence on menton deviation in skeletal Class III deformity with mandibular asymmetry. Methods The control group consisted of 30 young adults (15 men, 15 women) without any severe skeletal deformity. The asymmetry group included 55 adults (28 men, 27 women) with skeletal Class III deformity...

  2. Class III β-tubulin overexpression within the tumor microenvironment is a prognostic biomarker for poor overall survival in ovarian cancer patients treated with neoadjuvant carboplatin/paclitaxel

    OpenAIRE

    Roque, Dana M; Buza, Natalia; Glasgow, Michelle; Bellone, Stefania; Bortolomai, Ileana; Gasparrini, Sara; Cocco, Emiliano; Ratner, Elena; Silasi, Dan-Arin; Azodi, Masoud; Rutherford, Thomas J.; Schwartz, Peter E.; Alessandro D Santin

    2013-01-01

    Critics have suggested that neoadjuvant chemotherapy (NACT) followed by interval debulking may select for resistant clones or cancer stem cells when compared to primary cytoreduction. β-tubulins are chemotherapeutic targets of taxanes and epothilones. Class III β-tubulin overexpression has been linked to chemoresistance and hypoxia. Herein, we describe changes in class III β-tubulin in patients with advanced ovarian carcinoma in response to NACT, in relationship to clinical outcome, and betwe...

  3. Effects of Lifestyle Interventions That Include a Physical Activity Component in Class II and III Obese Individuals: A Systematic Review and Meta-Analysis

    OpenAIRE

    Baillot, Aurélie; Romain, Ahmed J.; Boisvert-Vigneault, Katherine; Audet, Mélisa; Baillargeon, Jean Patrice; Dionne, Isabelle J.; Valiquette, Louis; Chakra, Claire Nour Abou; Avignon, Antoine; Langlois, Marie-France

    2015-01-01

    Background In class II and III obese individuals, lifestyle intervention is the first step to achieve weight loss and treat obesity-related comorbidities before considering bariatric surgery. A systematic review, meta-analysis, and meta-regression were performed to assess the impact of lifestyle interventions incorporating a physical activity (PA) component on health outcomes of class II and III obese individuals. Methods An electronic search was conducted in 4 databases (Medline, Scopus, CIN...

  4. Mechanistic investigation of food effect on disintegration and dissolution of BCS class III compound solid formulations: the importance of viscosity.

    Science.gov (United States)

    Radwan, Asma; Amidon, Gordon L; Langguth, Peter

    2012-10-01

    A negative food effect, i.e. a decrease in bioavailability upon the co-administration of compounds together with food, has been attributed particularly with high solubility/low permeability compounds (BCS class III). Different mechanisms have been proposed including intestinal dilution leading to a lower concentration gradient across the intestinal wall as well as binding of the active pharmaceutical ingredient to food components in the intestine and thereby decreasing the fraction of the dose available for absorption. These mechanisms refer primarily to the compound and not to the dosage form. An increase in viscosity of the dissolution fluid will in particular affect the absorption of BCS type III compounds with preferential absorption in the upper small intestine if the API release is delayed from the dosage form. The present study demonstrated that the increase in viscosity of the dissolution medium, following ingestion of a solid meal, may drastically reduce disintegration and dissolution. For that purpose the viscosity of the standard FDA meal was determined and simulated by solutions of HPMC in buffer. As model formulations, three commercially available tablets containing trospium chloride, a BCS class III m-cholinoreceptor antagonist was used. Trospium chloride drug products have been described to undergo a negative food effect of more than 80% following ingestion with food. The tablets showed prolonged disintegration times and reduced dissolution rates in viscous media, which could be attributed to changes in the liquid penetration rates. The effect was particularly significant for film-coated tablets relative to uncoated dosage forms. The results show the necessity of considering media viscosity when designing in vitro models of drug release for BCS type III drug formulations.

  5. Saliva versus plasma bioequivalence of rusovastatin in humans: validation of class III drugs of the salivary excretion classification system.

    Science.gov (United States)

    Idkaidek, Nasir; Arafat, Tawfiq

    2015-03-01

    Bioequivalence of rusovastatin in healthy human volunteers was done using saliva and plasma matrices in order to investigate the robustness of using saliva instead of plasma as a surrogate for bioequivalence of class III drugs according to the salivary excretion classification system (SECS). Saliva and plasma samples were collected for 72 h after oral administration of rusovastatin 40 mg to 12 healthy humans. Saliva and plasma pharmacokinetic parameters were calculated by non-compartmental analysis. Analysis of variance, 90 % confidence intervals, and intra-subject and inter-subject variability values of pharmacokinetic parameters were calculated using Kinetica program V5. Human effective intestinal permeability was also calculated by SimCYP program V13. Rusovastatin falls into class III (high permeability/low fraction unbound to plasma proteins) and hence was subjected to salivary excretion. A correlation coefficient of 0.99 between saliva and plasma concentrations, and a saliva/plasma concentration ratio of 0.175 were observed. The 90 % confidence limits of area under the curve (AUClast) and maximum concentration (C max) showed similar trends in both saliva and plasma. On the other hand, inter- and intra-subject variability values in saliva were higher than in plasma, leading to the need for a slightly higher number of subjects to be used in saliva studies. Non-invasive saliva sampling instead of the invasive plasma sampling method can be used as a surrogate for bioequivalence of SECS class III drugs when an adequate sample size is used.

  6. Treatment Approach for Maxillary Hypoplasia in Cleft Patients: Class III Elastics with Skeletal Anchorage (Report of Two Cases)

    Science.gov (United States)

    Jahanbin, Arezoo; Kazemian, Mozhgan; Saeedi-Pouya, Iman; Eslami, Neda; Shafaee, Hooman

    2016-01-01

    Introduction: Treatment of cleft lip and palate patients requires a multidisciplinary plan. These patients usually have a hypoplastic maxilla due to the prior surgical scars. Orthognathic surgery to advance the maxilla in these patients is not very efficient; therefore, orthopedic interventions during an appropriate age seems to be essential. Case Report: In this article, two cleft lip and palate patients have been treated with Class III elastics anchored to the maxillary posterior and mandibular anterior miniplates in order to induce maxillary advancement. Conclusion: Both cases showed a significant improvement in their profiles with minimal dentoalveolar compensations. A counterclockwise rotation of the mandible occurred. PMID:27602343

  7. A comparison of soft tissues changes in patients with angle classⅢmalocclusion after orthodontic and surgical treatments%正畸联合正颌治疗安氏Ⅲ类畸形对侧貌的影响研究

    Institute of Scientific and Technical Information of China (English)

    李磊; 王宏伟; 齐素青; 闫明

    2015-01-01

    目的 探讨正畸正颌联合治疗安氏Ⅲ类畸形对侧貌的影响.方法 选取安氏Ⅲ类畸形患者25例,采用正畸正颌联合治疗,治疗前后拍摄X线头颅定位片.结果 治疗后除上下唇角外其余项目差异有统计学意义(P<0.05).结论 正畸正颌联合治疗安氏Ⅲ类畸形可以显著改善侧貌.%Objective Investigate the effect of orthodontic treatment combined with orthognathic surgery operation in treatment of Class III malocclusion deformity soft tissue in patients.methods 25 cases of patients were given orthodontic treatment and orthognathic surgery operation. The X-ray cephalometric were taken before and after treatment.Results Compared with the prior correction, in addition to the angle of up and under lip other projects changed obviously after operation (P<0.05).Conclusion Orthodontic treatment combined with orthognathic surgery operation in treatment of angle Class III malocclusion deformity have signiifcant curative effect.

  8. TGF-{beta}-stimulated aberrant expression of class III {beta}-tubulin via the ERK signaling pathway in cultured retinal pigment epithelial cells

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Eun Jee [Department of Ophthalmology, National Health Insurance Corporation Ilsan Hospital, Gyeonggi-do (Korea, Republic of); Chun, Ji Na; Jung, Sun-Ah [Konyang University Myunggok Medical Research Institute, Kim' s Eye Hospital, Konyang University College of Medicine, Seoul (Korea, Republic of); Cho, Jin Won [Department of Biology, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749 (Korea, Republic of); Lee, Joon H., E-mail: joonhlee@konyang.ac.kr [Konyang University Myunggok Medical Research Institute, Kim' s Eye Hospital, Konyang University College of Medicine, Seoul (Korea, Republic of)

    2011-11-18

    Highlights: Black-Right-Pointing-Pointer TGF-{beta} induces aberrant expression of {beta}III in RPE cells via the ERK pathway. Black-Right-Pointing-Pointer TGF-{beta} increases O-GlcNAc modification of {beta}III in RPE cells. Black-Right-Pointing-Pointer Mature RPE cells have the capacity to express a neuron-associated gene by TGF-{beta}. -- Abstract: The class III {beta}-tubulin isotype ({beta}{sub III}) is expressed exclusively by neurons within the normal human retina and is not present in normal retinal pigment epithelial (RPE) cells in situ or in the early phase of primary cultures. However, aberrant expression of class III {beta}-tubulin has been observed in passaged RPE cells and RPE cells with dedifferentiated morphology in pathologic epiretinal membranes from idiopathic macular pucker, proliferative vitreoretinopathy (PVR) and proliferative diabetic retinopathy (PDR). Transforming growth factor-{beta} (TGF-{beta}) has been implicated in dedifferentiation of RPE cells and has a critical role in the development of proliferative vitreoretinal diseases. Here, we investigated the potential effects of TGF-{beta} on the aberrant expression of class III {beta}-tubulin and the intracellular signaling pathway mediating these changes. TGF-{beta}-induced aberrant expression and O-linked-{beta}-N-acetylglucosamine (O-GlcNac) modification of class III {beta}-tubulin in cultured RPE cells as determined using Western blotting, RT-PCR and immunocytochemistry. TGF-{beta} also stimulated phosphorylation of ERK. TGF-{beta}-induced aberrant expression of class III {beta}-tubulin was significantly reduced by pretreatment with U0126, an inhibitor of ERK phosphorylation. Our findings indicate that TGF-{beta} stimulated aberrant expression of class III {beta}-tubulin via activation of the ERK signaling pathway. These data demonstrate that mature RPE cells have the capacity to express a neuron-associated gene in response to TGF-{beta} stimulation and provide useful information

  9. Sınıf III malokluzyonlarında uygulanan tedavi sistemleri

    Directory of Open Access Journals (Sweden)

    Burcu Balos Tuncer

    2011-11-01

    Full Text Available

    Skeletal Class III malocclusion with a prognathic mandible is one of the most severe maxillofacial deformities. Esthetics and functions are strongly effected and the treatments are long and hard in these malocclusions. Mandibular prognathism or maxillary retrusion or both might cause this type of malocclusions. Treatment approaches depend on the etiology, the severity of the malocclusion and the developmental stage of the subject. In growing children facial growth modification can be an effective method. Orthopedic appliances such as chincup, face mask, maxillary protraction and the functional appliances are mainly used for the correction of Class III malocclusions. In adults fixed orthodontic treatment and orthognathic surgery is required. Within recent years, the number of studies have increased presenting the use of distraction osteogenesis. This review summarizes the etiology, treatment strategies and effects of the different treatment approaches in Class III malocclusions.

     

    ÖZET

    Sınıf III malokluzyonlar, maksillofasiyal deformiteler içinde en ciddi anomalilerden biridir. Bireylerde estetik ve fonksiyon açısından yetersizliğe yol açan ve tedavileri oldukça uzun ve zor anomalilerdir. Bu malokluzyonlara alt çene prognatisi, üst çene retruzyonu veya her ikisi birden sebep olabilir. Tedavi yaklaşımları malokluzyonun kaynaklandığı çeneye, etiyolojisine, malokluzyonun şiddetine ve bireyin içinde bulunduğu büyüme gelişim dönemine bağlı olarak

    değişir. Büyüme dönemindeki çocuklarda yüz büyümesinin yönlendirilmesi etkili bir tedavi yaklaşımıdır. Bu amaçla; çenelik, yüz maskesi veya bazı fonksiyonel apareyler kullanılmaktadır. Erişkin dönemdeki bireylerde ise sabit ortodontik tedaviler ve ortognatik cerrahi yaklaşımları uygulanmaktadır. Son yıllarda distraksiyon osteogenezis yöntemi ile yapılan çalışmalara rastlanmaktadır. Bu derlemede, s

  10. Invertebrate and vertebrate class III myosins interact with MORN repeat-containing adaptor proteins.

    Directory of Open Access Journals (Sweden)

    Kirk L Mecklenburg

    Full Text Available In Drosophila photoreceptors, the NINAC-encoded myosin III is found in a complex with a small, MORN-repeat containing, protein Retinophilin (RTP. Expression of these two proteins in other cell types showed NINAC myosin III behavior is altered by RTP. NINAC deletion constructs were used to map the RTP binding site within the proximal tail domain of NINAC. In vertebrates, the RTP ortholog is MORN4. Co-precipitation experiments demonstrated that human MORN4 binds to human myosin IIIA (MYO3A. In COS7 cells, MORN4 and MYO3A, but not MORN4 and MYO3B, co-localize to actin rich filopodia extensions. Deletion analysis mapped the MORN4 binding to the proximal region of the MYO3A tail domain. MYO3A dependent MORN4 tip localization suggests that MYO3A functions as a motor that transports MORN4 to the filopodia tips and MORN4 may enhance MYO3A tip localization by tethering it to the plasma membrane at the protrusion tips. These results establish conserved features of the RTP/MORN4 family: they bind within the tail domain of myosin IIIs to control their behavior.

  11. Comparison of the dynamax and twin block appliance in the treatment of Classmalocclusion on the position of the pharynx and hyoid%Dynamax和Twin block治疗Ⅱ类错(牙合)对咽腔舌骨位置的影响

    Institute of Scientific and Technical Information of China (English)

    史建陆; 林奕真; 任继业; 林艺犟; 许志强; 王智军; 魏小平; 张敏

    2011-01-01

    Objective To compare the influence of Dynamax and Twin block appliance in the treatment of ClassMalocclusion on the position of the Pharynx and Hyoid.Methods The 15 patients selected for each group were treated with new Dynamax or Twin block for 9 months.After removing the appliances, we observed for 3 months and then conducted cephalometrics of each patients primeters of pharynx and hyoid position.Results Good outcomes were achieved by applying either new Dynamax or Twin block functional appliances, with improvement in most of the pnmeters of pharynx and hyoid position, and the landmarks U and H moved forward more in Dynamax group than in Twin block group, with little significant difference either between the Dynamax and Twin block or between the experimental and control groups.Conclusion We can improve the respiratory function of the Class Ⅱ patients with either new Dynamax or Twin block group.Compared with Twin block, the Dynamax leads to better results.%目的 探讨两种功能矫治器Dynamax和Twin block治疗安氏Ⅱ类1分类下颌后缩患者,对咽腔及舌骨位置等气道指标的影响.方法 设计制作新型Dynamax和传统Twin block矫治器,随机应用于临床选择的符合实验组纳入条件的各15例病例9个月后,去功能矫治器在观察3个月后收集资料进行测量.结果 Dynamax和Twin block矫治器均取得明显的治疗效果,矫治后的大部分指标与发育正常的对照组基本相同;Dynamax组的舌骨(H点)及悬雍垂顶点(U点)较Twin block组前移更多;两实验组间治疗效果绝大部分没有区别.结论 新型Dynamax矫治器和Twin block矫治器矫治安氏Ⅱ类下颌后缩患者均可以取得改善呼吸遭遇气功能的效果,且Dynamax组效果更优.

  12. 78 FR 20268 - Effective Date of Requirement for Premarket Approval for Three Class III Preamendments Devices...

    Science.gov (United States)

    2013-04-04

    ... preamendments devices: Sorbent hemoperfusion devices for the treatment of hepatic coma and metabolic... hemoperfusion devices for the treatment of hepatic coma and metabolic disturbances; cranial electrotherapy... reclassified into class I or II or FDA issues an order finding the device to be substantially equivalent,...

  13. Cardiac resynchronization induces major structural and functional reverse remodeling in patients with New York Heart Association class I/II heart failure

    DEFF Research Database (Denmark)

    St John Sutton, Martin; Ghio, Stefano; Plappert, Ted;

    2009-01-01

    BACKGROUND: Cardiac resynchronization therapy (CRT) improves LV structure, function, and clinical outcomes in New York Heart Association class III/IV heart failure with prolonged QRS. It is not known whether patients with New York Heart Association class I/II systolic heart failure exhibit left...... ventricular (LV) reverse remodeling with CRT or whether reverse remodeling is modified by the cause of heart failure. METHODS AND RESULTS: Six hundred ten patients with New York Heart Association class I/II heart failure, QRS duration > or =120 ms, LV end-diastolic dimension > or =55 mm, and LV ejection...... reduction in LV end-diastolic and end-systolic volume indexes and a 3-fold greater increase in LV ejection fraction in patients with nonischemic causes of heart failure. CONCLUSIONS: CRT in patients with New York Heart Association I/II resulted in major structural and functional reverse remodeling at 1 year...

  14. Klammt open elastic activator and twin blocks in Class II malocclusion treatment. Activador abierto elástico de Klammt y bloques gemelos en el tratamiento del síndrome de clase II, división I

    Directory of Open Access Journals (Sweden)

    Clotilde de la Caridad Mora Pérez

    2009-01-01

    Full Text Available

    class="MsoNormal" style="margin: 1pt 7.0865pt; text-align: justify;">Background: Klammt open elastic activator and twin blocks have been two of the most worldwide studied functional appliances; however, there are different opinions about their effect on the cranium-facial complex. Objective: To determine the efficacy of these appliances in the functional treatment in Class II division I syndrome in early mixed teething. Methods: Prospective, cuasi experimental, “before-after” study without control group, including all children between 6 and 9 years of Area II in Cienfuegos municipality. After applying inclusion criteria, 20 patients were selected through simple randomized sampling and distributed in two groups, one for each technique. Lateral cranium teleradiographies were taken at the beginning and after a year of treatment, and lineal and/or angular measurements of Steiner, Ricketts, McNamara and Legan Burstone cephalograms were applied. Results: Favourable changes in cranium lateral radiographies measurements were obtained mainly from therapy with twin blocks. There was a decrease in the angle formed by the joint planes nasion-point A and nasion-point B and facial convexity, increase in mandible length and inferior facial height. Nasolabial angle and labial protuberance didn´t increase significantly. Onychophagia (Nail biting, anxiety, and malocclusion

    Directory of Open Access Journals (Sweden)

    Avesh Sachan

    2012-01-01

    Full Text Available Nail biting is a stress removing habit adopted by many children and adults. People usually do it when they are nervous, stressed, hungry, or bored. All of these situations are having a common phenomenon between them is anxiety. Onychophagia is also a sign of other emotional or mental disorders. It is a habit that is not easy to quit and reflection of extreme nervousness or inability to handle stressful conditions. This abnormal habit may cause various malocclusions associated with dentoalveolar segment of the oral cavity. Crowding and rotations of incisors are common with this habit.

  15. 骨性安氏Ⅲ类手术患者前牙区的牙槽骨厚度%Study of anterior alveolar bone thickness in skeletal classmalocclusion patients with orthognathic surgery

    Institute of Scientific and Technical Information of China (English)

    张婕; 李小彤

    2016-01-01

    Objective:To investigate the compensation of the anterior alveolar bone thickness in skeletal class Ⅲ patients treated with orthodontic-surgical treatment.Methods:The samples consisted of 54 ske-letal classⅢpatients treated with orthodontic-surgical treatment.Lateral cephalograms were taken before treatment.Descriptive statistics were calculated for corresponding variables,and the differences between the samples and the norms from Peking University normal occlusion sample library were assessed by inde-pendent-sample t test.Correlation analyses were performed to find associations between skeletal charac-teristics and anterior alveolar bone thickness.According to skeletal anteroposterior discrepancy/vertical type (ANB,criteria=-4°;SN-MP,criteria=37.7°),the samples were allocated into group A (severe anteroposterior discrepancy/hypodivergent vertical type,n=1 1 ),group B (moderate anteroposterior dis-crepancy/hypodivergent vertical type,n=1 6),group C (severe anteroposterior discrepancy/hyperdiver-gent vertical type,n=1 4),and group D (moderate anteroposterior discrepancy/hyperdivergent vertical type,n=1 3),and one-way ANOVA with SNK multiple comparison test were performed.Results:The anterior alveolar bone thickness of the skeletal class Ⅲ patients were thinner compared with norm values (P<0.05 ).Correlational analyses showed that,both the upper and lower anterior alveolar bone thick-ness was correlated with the skeletal vertical discrepancy (P<0.05 ),but the anteroposterior type was only correlated with the lower anterior alveolar bone thickness (P<0.05).For the 4 groups according to skeletal anteroposterior discrepancy/vertical type,hypodivergent vertical type had thinner lower ligual and total bone thickness (LP,LW,P<0.05).while for upper alveolar bone thickness (UW),group C and group B exhibited the thinnest and thickest (the values of UW were 7.86 mm and 9.05 mm).Conclusion:The upper and lower anterior alveolar bone thickness of skeletal class

  16. Crescimento da base craniana nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III: parte 3 (Crescimento médio de CF-Po Cranial base growth in different facial types in Class I, II and III orthopedic maxillomandibular relationship: part 3 (Mean growth of CF-Po

    Directory of Open Access Journals (Sweden)

    Lucelma Vilela Pieri

    2007-06-01

    Full Text Available OBJETIVO: este estudo retrospectivo avaliou o crescimento médio de CF-Po nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III. METODOLOGIA: uma amostra aleatória de 300 pacientes brasileiros leucodermas (131 do gênero masculino, 169 do gênero feminino, com idade média inicial de 10 anos e 2 meses (dentadura mista e final de 14 anos e 8 meses (segundos molares em oclusão e tempo médio de observação de 4 anos e 5 meses, foi selecionada em uma clínica particular, em São Paulo, Brasil. Havia 118 pacientes Classe I, 151 Classe II e 31 Classe III. Todas as 600 radiografias cefalométricas laterais foram obtidas no mesmo aparelho de raios-x. As análises de Ricketts e Schwarz modificadas por Faltin foram usadas. A medida linear CF-Po foi feita manualmente pelo mesmo examinador em T1 e T2. Os relacionamentos foram estudados juntos e separadamente, considerando tipo facial e gênero. A análise de variância de ANOVA foi aplicada. RESULTADOS E CONCLUSÕES: o tipo facial retrovertido mostrou-se significativamente desfavorável à correção de Classe III mandibular no gênero masculino; com tendência desfavorável à Classe II mandibular e crescimento ântero-posterior favorável na Classe I. O neutrovertido mostrou-se significativamente favorável à correção de Classe III mandibular em ambos os gêneros; com tendência favorável à correção de Classe II mandibular e ao crescimento ântero-posterior na Classe I. O provertido mostrou-se significativamente desfavorável à correção de Classe III em ambos os gêneros e favorável na Classe II mandibular e com tendência favorável de crescimento ântero-posterior na Classe I, principalmente no gênero masculino.AIM: This retrospective study assessed the cranial base growth and development in different facial types in Class I, II and III orthopedic maxillomandibular relationship. METHODS: A random sample of 300 Brazilian Caucasian patients

  17. Social class, political power, and the state: their implications in medicine--part III.

    Science.gov (United States)

    Navarro, V

    1977-01-01

    This is the third part of an article on the distribution of power and the nature of the state in Western industrialized societies and their implications in medicine. Parts I and II were published in the preceding issue of this Journal. Part I presented a critique of contemporary theories of the Western system of power; discussed the countervailing pluralist and power of elite theories, as well as those of bureaucratic and professional control; and concluded with an examination of the Marxist theories of economic determinism, structural determinism, and corporate statism. Part II presented a Marxist theory of the role, nature, and characteristics of state intervention. Part III focuses on the mode of that intervention and the reasons for its growth, with an added analysis of the attributes of state intervention in the health sector, and of the dialectical relationship between its growth and the current fiscal crisis of the state. In all three parts, the focus is on Western European countries and on North America, with many examples and categories from the area of medicine. PMID:870557

  18. Comparative study of design of piping supports class 1, 2 and 3 considering german code KTA and ASME III - NF

    International Nuclear Information System (INIS)

    The objective of this paper is developing a comparative study of the design criteria for class 1, 2, 3 piping supports considering the American Code ASME Section III - NF and the German Code KTA 3205.1 to the Primary Circuit, KTA 3205.2 to the others systems and KTA 3205.3 series-production standards supports of a PWR nuclear power plant. An additional purpose of the paper is a general analysis of the main design concepts of the American Code ASME Boiler and Pressure Vessel Code, Section III, Division 1 and German Nuclear Design Code KTA that was performed in order to aid the comparative study proposed. The relevance of this study is to show the differences between codes ASME and KTA since they were applied in the design of the Nuclear Power Plants Angra 1 and Angra 2, and to the design of Angra 3, which is at the moment under construction. It is also considered their use in the design of nuclear installations such as RMB - Reator MultiProposito Brasileiro and LABGENE - Laboratorio de Geracao Nucleoeletrica. (author)

  19. Preliminary study on stability after treatment of skeletal Classmalocclusion with temporomandibular disorders after surgery and orthodontic treatment%骨性Ⅱ类错(牙合)伴颞下颌关节紊乱矫正后的长期稳定性

    Institute of Scientific and Technical Information of China (English)

    袁玲君; 房兵

    2011-01-01

    PURPOSE: To preliminarily investigate the stability of skeletal Class II malocclusion with temporomandibular disorders (TMD) after surgery and orthodontic treatment. METHODS: Ten consecutive patients (8 females and 2 males, mean age 22.3 ±2.9 years) were reexamined 2.63 ±1.36 years after treatment. The patients underwent surgery and orthodontic treatment, including mandibular advancement by bilateral sagittal split ramus osteotomy (BSSO) or genioplasty, with rigid internal fixation (RIF).Serial lateral cephalometric radiographs before treatment (T0), after treatment(T1) and at the end of follow-up (T2) were traced. TMJ symptoms and condylar resorption were simultaneously recorded to assess the effects of orthognathic treatment on TMD using magnetic resonance imaging (MRT). SPSS16.0 software package was used for statistical analysis. RESULTS: Paired t test showed no statistically significant posttreatment changes of cephalometric characteristics except that overjet increased by 0.62 mm (P2mm relapse of LI-NB distance and mentolabial fold. No deterioration on TMD was noted. MRI showed no significant changes of disc position and condylar resorption. CONCLUSION: The results suggest that combined orthodontic and orthognathic treatment (including rigid internal fixation) can be used safely to correct skeletal Class II malocclusion with TMD, maintaining a long-term stable result of occlusion without deterioration on TMJ signs and symptoms.%目的:研究骨性Ⅱ类错(牙合)伴颞下颌关节紊乱患者在正颌-正畸联合治疗后面型和咬合的长期稳定性.方法:选择10例在本院正颌-正畸中心治疗结束3年以上、资料齐全的骨性Ⅱ类错(牙合)患者,男2例,女8例,平均年龄(22.3±2.9)岁,治疗结束平均随访期(2.63±1.36)a.治疗方案为术前正畸、正颌手术、术后正畸,手术根据面型测量数据采用双颌手术或上颌手术+颏成形,术中采用坚强内固定.比较治疗前(T0)、治疗结束(T1)

  1. A study on the relationship between maxillary protraction treatment and changes of nasomaxillary complex facial soft tissue of children with skeletal Class m malocclusion%上颌前方牵引矫治骨性Ⅲ类错(牙合)儿童鼻上颌复合体部软组织变化的研究

    Institute of Scientific and Technical Information of China (English)

    朱吉坤; 张桂荣; 郭艳明; 李济强; 刘继辉

    2014-01-01

    目的 评价上颌前方牵引矫治上颌骨发育不足所致的骨性Ⅲ类错(牙合)儿童鼻上颌复合体部软组织变化,为临床治疗上颌后缩的患者提供理论基础和参考依据.方法 选取上颌发育不足、骨性Ⅲ类错(牙合)患儿30例,男女各15例,年龄9 ~11(平均10.5)岁,均处于生长发育高峰前期或高峰期.采取上颌前方牵引矫形治疗,前方牵引时间6~8个月.试验前后拍摄头颅侧位定位X线片,并测量各项鼻部形态及口颌部软组织侧面形态指标,综合分析矫治前后差异.结果 矫治前后鼻部软组织鼻根点距离(Ns-Y)、鼻尖角的差异无统计学意义(P>0.05);治疗后,鼻中点距离(M-Y)增大(P<0.05),鼻尖点距离(Prn-Y)、鼻额角增大(P<0.01),鼻唇角减小(P<0.05).唇部及颏部软组织上唇凹点至Y轴的距离(As-Y)、上唇突点至Y轴的距离(UL-Y)、上唇凸距(UL-E)、上唇基角(S-Ns-Sn)均增大(P<0.01);下唇凸距(LL-E)、软组织颏前点距离(Pos-Y)均减小(P<0.05);矫治前后下唇凹点至Y轴的距离(Bs-Y)的差异无统计学意义.结论 上颌前方牵引不仅可以早期矫治上颌后缩Ⅲ类错(牙合)、改善上下颌骨不调关系,同时有助于鼻上颌复合体部软组织良好外形的形成.鼻部及上唇前移、颏部后移,使患儿侧貌突度更趋于协调美观.%Objective To investigate nasomaxlllary complex facial soft tissue changes after the treatment with maxillary protraction appliance with skeletal Classmalocclusion with a retruded maxilla.Methods Thirty growing subjects with skeletal Classmalocclusions with maxillary retrognathism were selected and treated by facial mask(male 15,female 15,with an average age of 10.5).They were given a maxillary protraction treatment with face mask for 6-8 months.Cephalometric measurements about nasomaxillary complex soft tissue changes were analyzed to draw the statistic conclusion.Results After maxillary protraction treatment

  2. 安氏Ⅱ1高角及低角错牙合病例颅面部生长发育的研究%The research of craniofacial growth and development of the patients with Angle Class II divislon I malocclu-sion patients and high and low angle

    Institute of Scientific and Technical Information of China (English)

    高冬玲; 金鈁; 李扬

    2014-01-01

    Objective:To study the correlation between the characteristics of craniofacial growth and development , molar inclination and not adjusted vertical direction of craniofacial growth and development in Angle class Ⅱ division Ⅰmalocclusion with high and low angle. Method:The analysis of X cephalometrics of 80 cases with Angle class Ⅱ divisionⅠmalocclusion and high and low angle. Result:①.In the cases with high angle,∠SNA and∠SNB reduced,∠ANB slight-ly increased,NP-FH reduced,and the length of the mandible was too short. In the cases with low angle,∠SNA and ∠SNB were normal,∠ANB slightly increased,NP-FH was also normal,the length of the mandible was normal. ②.In cases with high angle,Ar-Go was significantly shorter,leading to S-Go was too small and N-Me,N-ANS,ANS-Me were normal. In cases with low angle,S-Go is relatively large,N-Me and ANS-Me reduced.③U6-OP,U6-SN°,L6-MP° U6-L6°(P<0.01). Conclusion:①.In the cases with high angle,the sagittal relationship between maxilla,mandible and the cranial base was ret-rognathia,the length of the mandible was too small,and the mandibular retrusion was more obvious. In the cases with low angle,the sagittal relationship between maxilla,mandible and the cranial base was normal. ②.In cases with high angle,the sagittal imbalance leads to the trend of opening bite,because the lower jaw backward and rotate. In cases with low angle,the sagittal imbalance leads to the trend of deep overbite,because the lower jaw forward and rotate. ③.Maxillary Molars inclina-tion in cases with high angle was greater than in cases with low angle at occlusal plane and anterior cranial base plane. Mandibular molar inclination in cases with high angle was greater than in cases with low angle at the mandibular plane. Mo-lar inclination certainly reflected the trend of craniofacial development,Especially to the vertical imbalance of craniofacial structures.%目的:研究安氏Ⅱ1错牙合高角、低角病例颅面部生长

  3. Correlation of alveolar bone structure and incisor labial inclination in adolescents with skeletal class II malocclusion of Uygur and Han populations in Xinjiang, China%新疆维汉青少年骨性Ⅱ类切牙唇倾度与牙槽骨结构的相关性

    Institute of Scientific and Technical Information of China (English)

    阮晓慧; 侯鹏; 吴佩玲

    2016-01-01

    BACKGROUND:Location relationship between maxilary incisor labial inclination and the thickness of anterior alveolar bone displays ethnic and regional differences. OBJECTIVE:To study the correlation of alveolar bone structure and incisor labial inclinationin adolescents with skeletal class II malocclusion in Uygur and Han populations of Xinjiang, China. METHODS:Sixty Uygur and 60 Han patients at 11-16 years of age (average 13.8 years old), 32 males and 28 females, with skeletal class II malocclusion wereincluded. The thickness of anterior alveolar bone and incisor labial inclination were measuredon lateralcephalometric films, and the results were analyzed using SPSS 17.0 statistical software. RESULTS AND CONCLUSION:In Han and Uygur populations, palatalalveolar bone thicknessin maxilary incisor regionwas significantly negatively correlated with the inclination of maxilary incisor (r=-0.715 for Han,r=-0.651 for Uygur,P< 0.05), while labial alveolar bone thicknessin mandibular incisor regionwas significantly positively correlated with the lower incisor inclination (r=0.902 for Han,r=0.745 for Uygur,P< 0.05). These results indicate thatthepalatal alveolar bone thicknessin maxilary incisor region decreases with the increase of the inclinationof maxilary incisor; however,thelabial alveolar bone thicknessin mandibular incisor regionincreases with the increase of the lower incisor inclination.%背景:研究指出上颌前牙唇倾度与前牙区唇腭侧牙槽骨厚度的空间位置关系,X射线头影测量存在种族和地域的差异。目的:对新疆维吾尔族及汉族青少年骨性Ⅱ类错牙合不同垂直骨面型患者切牙区牙槽骨形态结构与切牙唇倾度进行相关性分析。方法:选取维吾尔族及汉族年龄在11-16岁骨性Ⅱ类错牙合患者各60例,平均年龄13.8岁,拍摄头颅定位侧位片并测量上下前牙区牙槽骨厚度和前牙唇倾度,利用SPSS 17.0统计软件对测量结果进行比较分析。结

  4. Estudo comparativo das alterações dentoesqueléticas da má-oclusão de Classe II, 1ª divisão de Angle, nos jovens sem tratamento e nos submetidos a dois tipos de aparelhos ortodônticos Comparative study of dentoskeletal changes in untreated Class II, division 1 malocclusions and in those treated with two types of orthodontic appliances

    Directory of Open Access Journals (Sweden)

    Liliana Ávila MALTAGLIATI

    1999-12-01

    Full Text Available A realização deste trabalho teve por objetivo comparar as alterações dentoesqueléticas da má-oclusão de Classe II, 1ª divisão de Angle sem tratamento com as tratadas por dois tipos de aparelhos ortodônticos. As radiografias cefalométricas em norma lateral iniciais e finais de um grupo controle e de dois experimentais, um tratado com o aparelho removível conjugado à ancoragem extrabucal cervical e outro com a terapia ortodôntica fixa sem extrações e ancoragem extrabucal cervical, foram traçadas e submetidas ao teste estatístico. A análise dos resultados revelou que há pouca alteração do padrão de crescimento e que a altura facial ântero-inferior aumentou em todos os grupos. Não houve melhora significante da relação maxilomandibular no grupo controle, enquanto que, nos grupos tratados, a maxila foi retraída, com diminuição significante do ângulo ANB. As alterações dentoalveolares demonstraram que o aparelho utilizado no grupo 2 foi eficiente no controle vertical do crescimento da maxila e na extrusão dos dentes superiores posteriores e anteriores. Estes, em ambos os grupos tratados, foram movimentados para distal e palatino, respectivamente, levando à uma relação molar normal e à redução do trespasse horizontal aumentado. No grupo controle, no entanto, os dentes superiores e inferiores desenvolveram-se em uma direção ântero-inferior, mantendo as características da má-oclusão de Classe II, 1ª divisão de Angle.The purpose of this study was to compare the skeletal and dental changes of the Class II, division 1 malocclusions with and without treatment. Seventy five patients were divided in three groups: control, treated with a modified maxillary splint and treated with fixed appliance and Kloehn headgear, each one having thirteen males and twelve females. The cephalometric radiographs were traced and analyzed by means of the "Dentofacial Planner" software. The results showed that there is little change

  5. Class II malocclusion with deep overbite: a sequential approach

    OpenAIRE

    Fernando Lima Martinelli; Chalana Sangalli Reale; Ana Maria Bolognese

    2012-01-01

    OBJECTIVE: The aim of this case report was to evaluate the results of deep overbite correction by the segmented arch technique. METHODS: The first stage of the treatment was performed with this technique to intrude incisors and canines. A maxillary transpalatal bar and a mandibular lingual arch using 0.051-in archwire were employed associated to a facial bow, anchored primarily with occipital pull and, after molar relationship correction, changed to high pull. RESULTS: Upper incisors presente...

  6. Angle Class I malocclusion treated with lower incisor extraction

    OpenAIRE

    Vanessa Leal Tavares Barbosa

    2013-01-01

    In planning orthodontic cases that include extractions as an alternative to solve the problem of negative space discrepancy, the critical decision is to determine which teeth will be extracted. Several aspects must be considered, such as periodontal health, orthodontic mechanics, functional and esthetic alterations, and treatment stability. Despite controversies, extraction of teeth to solve dental crowding is a therapy that has been used for decades. Premolar extractions are the most common,...

  7. An American Board of Orthodontics case report. Treatment of an open bite malocclusion.

    Science.gov (United States)

    Efstratiadis, S S

    1990-08-01

    The patient had a Class I (Angle) malocclusion characterized by an anterior open bite, bimaxillary dental protrusion, posterior and anterior crossbites, and mandibular midline deviation. A nonextraction treatment was followed for this patient. A Begg appliance (0.020 inch) and a posterior high-pull headgear were used. The prognosis was good because of the rather favorable skeletal pattern of the patient. The active treatment lasted 12 months. The patient was retained with a positioner. The occlusion was stable at 2 years posttreatment.

  8. 40 CFR Figure C-3 to Subpart C of... - Illustration of the Slope and Intercept Limits for Class II and Class III PM10−2.5 Candidate...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 5 2010-07-01 2010-07-01 false Illustration of the Slope and Intercept Limits for Class II and Class III PM10â2.5 Candidate Equivalent Methods C Figure C-3 to Subpart C of Part... Candidate Methods and Reference Methods Pt. 53, Subpt. C, Fig. C-3 Figure C-3 to Subpart C of Part...

  9. Bone Maturation in Patients with Angle’s Class II Division 1 Malocclusion Caused by Dental Development Maduración ósea en pacientes con maloclusión clase II división 1 de Angle a partir del desarrollo dental

    Directory of Open Access Journals (Sweden)

    Clotilde de la Caridad Mora Pérez

    2012-09-01

    Full Text Available Background: chronological age does not always allow assessing the somatic development and maturation of patients. Therefore, we resort to bone maturation study, a safer and more reliable method to assess the biological age of individuals. Objective: To determine bone maturation from dental development in patients with Angle’s class II division 1 malocclusion. Methods: A descriptive, observational and cross-sectional study was conducted at Area II in Cienfuegos. It included 50 children. The study of bone age of patients with class II division 1 with orthodontic treatment was performed through assessment methods of bone maturation in calcification stages of the seven left mandibular teeth, using the Demirjians maturation scale. Results: We found that, generally, bone age increased in relation to decimal, dental and chronological ages in both sexes, mainly in males. It was found that there is a strong correlation between chronological and decimal ages; the correlation between bone age, chronological age and decimal age is lower. Conclusions: The Demirjians method could be used in both sexes to determine bone age in patients under orthodontic treatment; values increased mainly in males.Fundamento: la edad cronológica no siempre permite valorar el desarrollo y la maduración somática del paciente, por lo cual se recurre al estudio de la maduración ósea, método más seguro y fiable para evaluar la edad biológica de los individuos. Objetivo: determinar la maduración ósea a partir del desarrollo dental en pacientes con maloclusión clase II división 1 de Angle. Métodos: estudio descriptivo, observacional, de corte transversal realizado en 50 niños del Área II, de Cienfuegos. Se realizó el estudio de  la edad ósea de pacientes clase II división 1 tributarios de tratamientos ortodóncicos, a partir del m

  10. ELECTROPHARMACOLOGIC EFFECTS AND PHARMACOKINETICS OF ALMOKALANT, A NEW CLASS-III ANTIARRHYTHMIC, IN PATIENTS WITH HEALED OR HEALING MYOCARDIAL INFARCTS AND COMPLEX VENTRICULAR ARRHYTHMIAS

    NARCIS (Netherlands)

    WIESFELD, ACP; CRIJNS, HJGM; TOBE, TJM; ALMGREN, O; BERGSTRAND, RH; ABERG, J; HAAKSMA, J; LIE, KI

    1992-01-01

    The electropharmacologic effects and pharmacokinetics of almokalant, a new class III antiarrhythmic, were investigated in a randomized, placebo-controlled, double-blind study, and efficacy was evaluated. Ten post-myocardial infarction patients with complex ventricular arrhythmias were included and r

  11. Identification of a system required for the functional surface localization of sugar binding proteins with class III signal peptides in Sulfolobus solfataricus

    NARCIS (Netherlands)

    Zolghadr, Behnam; Weber, Stefan; Szabo, Zalan; Driessen, Arnold J. M.; Albers, Sonja-Verena

    2007-01-01

    The hyperthermophilic archaeon Sulfolobus solfataricus contains an unusual large number of sugar binding proteins that are synthesized as precursors with a class III signal peptide. Such signal peptides are commonly used to direct archaeal flagellin subunits or bacterial (pseudo)pilins into extracel

  12. [Molecular evidences of non-ADH pathway in alcohol metabolism and Class III alcohol dehydrogenase (ADH3)].

    Science.gov (United States)

    Haseba, Takeshi

    2014-06-01

    Class I alcohol dehydrogenase (ADH1), a key enzyme of alcohol metabolism, contributes around 70% to the systemic alcohol metabolism and also to the acceleration of the metabolism due to chronic alcohol consumption by increasing its liver content, if the liver damage or disease is not apparent. However, the contribution of ADH1 to alcohol metabolism decreases in case of acute alcohol poisoning or chronic alcohol consumption inducing liver damage or disease. On the contrary, non-ADH pathway, which is independent of ADH1, increases the contribution to alcohol metabolism in these cases, by complementing the reduced role of ADH1. The molecular substantiality of non-ADH pathway has been still unknown in spite of the long and hot controversy between two candidates of microsomal ethanol oxidizing system (MEOS) and catalase. This research history suggests the existence of other candidates. Among ADH isozymes, Class III (ADH3) has the highest Km for ethanol and the highest resistance to pyrazole reagents of specific ADH inhibitors. This ADH3 was demonstrated to increase the contribution to alcohol metabolism in vivo dose-dependently, therefore, is a potent candidate of non-ADH pathway. Moreover, ADH3 is considered to increase the contribution to alcohol metabolism in case of alcoholic liver diseases, because the enzyme content increases in damaged tissues with increased hydrophobicity or the activity of the liver correlates with the accumulated alcohol consumptions of patients with alcoholic liver diseases. Such adaptation of ADH3 to alcohol metabolism in these pathological conditions makes patients possible to keep drinking a lot in spite of decrease of ADH1 activity and develops alcoholism seriously.

  13. Abundant class III acidic chitinase homologue in tamarind (Tamarindus indica) seed serves as the major storage protein.

    Science.gov (United States)

    Rao, Devavratha H; Gowda, Lalitha R

    2008-03-26

    The phyla Leguminosae contains protease inhibitors, lectins, chitinases, and glycohydrolases as major defense proteins in their seeds. Electrophoretic analysis of the seed proteins of tamarind ( Tamarindus indica L.), an agri-waste material, indicated the unusual presence of two major proteins comparable to overexpression of recombinant proteins. These proteins were identified by amino-terminal analysis to be (1) Kunitz-type trypsin inhibitor and (2) class III endochitinase (34000 Da). These two proteins were purified to apparent homogeneity by a single-step chitin bead affinity chromatography and characterized. The Kunitz inhibitor was specific toward inhibiting trypsin with a stoichiometry of 1:1. The 33000 +/- 1000 Da protein, accounting for >50% of the total seed protein, is an acidic glycoprotein exhibiting a very low endotype hydrolytic activity toward chitin derivatives. SDS-PAGE followed by densitometry of tamarind seed germination indicates the disappearance of the chitinase with the concomitant appearance of a cysteine endopeptidase. On the basis of its abundance, accumulation without any pathogenesis-related stimulus, temporal regulation, amino acid composition, and very low enzyme activity, this 34000 Da protein designated "tamarinin" physiologically serves as the major storage protein.

  14. Spitzer IRS Observations of Class I/II Objects in Taurus: Composition, Temperature and Thermal History of the Circumstellar Ices

    CERN Document Server

    Zasowski, G; Watson, Dan M; Furlan, E; Bohac, C J; Hull, C; Green, J D

    2007-01-01

    We present observations of Taurus-Auriga Class I/II protostars obtained with the Spitzer InfraRed Spectrograph. Detailed spectral fits to the 6 and 15 micron features are made, using publicly-available laboratory data, to constrain the molecular composition, abundances, and levels of thermal processing along the lines of sight. We provide an inventory of the molecular environments observed, which have an average composition dominated by water ice with ~12% CO_2 (abundance relative to H_2O), >~2-9% CH_3OH, <~14% NH_3, ~4% CH_4, ~2% H_2CO, ~0.6% HCOOH, and ~0.5% SO_2. We find CO_2/H_2O ratios nearly equivalent to those observed in cold clouds and lines of sight toward the galactic center. The unidentified 6.8 micron profile shapes vary from source to source, and it is shown to be likely that even combinations of the most common candidates (NH_4+ and CH_3OH) are inadequate to explain the feature fully. We discuss correlations among SED spectral indices, abundance ratios, and thermally-processed ice fractions ...

  15. More on fatigue verification of Class 1 nuclear power piping according to ASME BPV III NB-3600

    International Nuclear Information System (INIS)

    In this paper, fatigue verification of Class 1 nuclear power piping according to ASME Boiler and Pressure Vessel Code, Section III, NB-3600, and relevant issues that are often discussed in connection to the power uprate of several Swedish BWR reactors in recent years, are dealt with. Key parameters involved in the fatigue verification, i.e. the alternating stress intensity Salt, the penalty factor Ke and the cumulative damage factor U, and relevant computational procedures applicable for the assessment of low-cycle fatigue failure using strain-controlled data, are particularly addressed. A so-called simplified elastic-plastic discontinuity analysis for alternative verification when basic fatigue requirements found unsatisfactory, and the procedures provided in NB-3600 for evaluating the alternating stress intensity Salt, are reviewed in detail. Our emphasis is placed on other procedures alternative to the simplified elastic-plastic discontinuity analysis. A more in-depth discussion is given to an alternative suggested earlier by the authors using nonlinear finite element analyses. This paper is a continuation of our work presented in ICONE16/17/18, which attempted to categorize design rules in the code into linear design rules and non-linear design rules and to clarify corresponding design requirements and finite element analyses, in particular, those non-linear ones. (author)

  16. PCSK1 rs6232 Is Associated with Childhood and Adult Class III Obesity in the Mexican Population

    Science.gov (United States)

    Villalobos-Comparán, Marisela; Villamil-Ramírez, Hugo; Villarreal-Molina, Teresa; Larrieta-Carrasco, Elena; León-Mimila, Paola; Romero-Hidalgo, Sandra; Jacobo-Albavera, Leonor; Liceaga-Fuentes, Adriana E.; Campos-Pérez, Francisco J.; López-Contreras, Blanca E.; Tusié-Luna, Teresa; del Río-Navarro, Blanca E.; Aguilar-Salinas, Carlos A.; Canizales-Quinteros, Samuel

    2012-01-01

    Background Common variants rs6232 and rs6235 in the PCSK1 gene have been associated with obesity in European populations. We aimed to evaluate the contribution of these variants to obesity and related traits in Mexican children and adults. Methodology/Principal Findings Rs6232 and rs6235 were genotyped in 2382 individuals, 1206 children and 1176 adults. Minor allele frequencies were 0.78% for rs6232 and 19.99% for rs6235. Rs6232 was significantly associated with childhood obesity and adult class III obesity (OR = 3.01 95%CI 1.64–5.53; P = 4×10−4 in the combined analysis). In addition, this SNP was significantly associated with lower fasting glucose levels (P = 0.01) and with increased insulin levels and HOMA-B (P = 0.05 and 0.01, respectively) only in non-obese children. In contrast, rs6235 showed no significant association with obesity or with glucose homeostasis parameters in any group. Conclusion/Significance Although rs6232 is rare in the Mexican population, it should be considered as an important risk factor for extreme forms of obesity. PMID:22737226

  17. Pseudomonas aeruginosa Exhibits Deficient Biofilm Formation in the Absence of Class II and III Ribonucleotide Reductases Due to Hindered Anaerobic Growth.

    Science.gov (United States)

    Crespo, Anna; Pedraz, Lucas; Astola, Josep; Torrents, Eduard

    2016-01-01

    Chronic lung infections by the ubiquitous and extremely adaptable opportunistic pathogen Pseudomonas aeruginosa correlate with the formation of a biofilm, where bacteria grow in association with an extracellular matrix and display a wide range of changes in gene expression and metabolism. This leads to increased resistance to physical stress and antibiotic therapies, while enhancing cell-to-cell communication. Oxygen diffusion through the complex biofilm structure generates an oxygen concentration gradient, leading to the appearance of anaerobic microenvironments. Ribonucleotide reductases (RNRs) are a family of highly sophisticated enzymes responsible for the synthesis of the deoxyribonucleotides, and they constitute the only de novo pathway for the formation of the building blocks needed for DNA synthesis and repair. P. aeruginosa is one of the few bacteria encoding all three known RNR classes (Ia, II, and III). Class Ia RNRs are oxygen dependent, class II are oxygen independent, and class III are oxygen sensitive. A tight control of RNR activity is essential for anaerobic growth and therefore for biofilm development. In this work we explored the role of the different RNR classes in biofilm formation under aerobic and anaerobic initial conditions and using static and continuous-flow biofilm models. We demonstrated the importance of class II and III RNR for proper cell division in biofilm development and maturation. We also determined that these classes are transcriptionally induced during biofilm formation and under anaerobic conditions. The molecular mechanism of their anaerobic regulation was also studied, finding that the Anr/Dnr system is responsible for class II RNR induction. These data can be integrated with previous knowledge about biofilms in a model where these structures are understood as a set of layers determined by oxygen concentration and contain cells with different RNR expression profiles, bringing us a step closer to the understanding of this

  18. Pseudomonas aeruginosa exhibits deficient biofilm formation in the absence of class II and III ribonucleotide reductases due to hindered anaerobic growth.

    Directory of Open Access Journals (Sweden)

    Anna eCrespo

    2016-05-01

    Full Text Available Chronic lung infections by the ubiquitous and extremely adaptable opportunistic pathogen Pseudomonas aeruginosa correlate with the formation of a biofilm, where bacteria grow in association with an extracellular matrix and display a wide range of changes in gene expression and metabolism. This leads to increased resistance to physical stress and antibiotic therapies, while enhancing cell-to-cell communication. Oxygen diffusion through the complex biofilm structure generates an oxygen concentration gradient, leading to the appearance of anaerobic microenvironments.Ribonucleotide reductases (RNRs are a family of highly sophisticated enzymes responsible for the synthesis of the deoxyribonucleotides, and they constitute the only de novo pathway for the formation of the building blocks needed for DNA synthesis and repair. P. aeruginosa is one of the few bacteria encoding all three known RNR classes (Ia, II and III. Class Ia RNRs are oxygen dependent, class II are oxygen independent, and class III are oxygen sensitive. A tight control of RNR activity is essential for anaerobic growth and therefore for biofilm development.In this work we explored the role of the different RNR classes in biofilm formation under aerobic and anaerobic initial conditions and using static and continuous-flow biofilm models. We demonstrated the importance of class II and III RNR for proper cell division in biofilm development and maturation. We also determined that these classes are transcriptionally induced during biofilm formation and under anaerobic conditions. The molecular mechanism of their anaerobic regulation was also studied, finding that the Anr/Dnr system is responsible for class II RNR induction. These data can be integrated with previous knowledge about biofilms in a model where these structures are understood as a set of layers determined by oxygen concentration and contain cells with different RNR expression profiles, bringing us a step closer to the

  19. McNamara分析法评价改良SUS2矫治器治疗安氏Ⅱ类错牙合的临床疗效%Evaluation of the clinical effects of refined SUS2 on Class II malocclusion by McNamara method

    Institute of Scientific and Technical Information of China (English)

    浦逢燕; 李青奕

    2016-01-01

    Objective To compare the dentofacial changes produced by refined Sabbagh Universal Spring ( SUS2 ) in late adolescent patients with ClassⅡ malocclusion, and to quantify them in comparison with patients treated by traditional appliance. Methods The study was carried out on two groups of ClassⅡpatients. McNamara cephalometric analysis was performed on lateral cephalometric radi⁃ographs before and after treatment. Results Both the refined SUS2 group and traditional group reduced the distance of A to N⁃FH, the values of which were 0.6 and 0.4mm, respectively. Lower 1 horizontal to FOP ( function occlusal plane) moved forward by 0.3 and 1. 5mm. As to Lower 1 –Apo, the changes of the two groups were 0.6 and 2.5mm, respectively (P<0.05). Conclusion Both appli⁃ances corrected Class II discrepancies through dentoalveolar changes. However, refined SUS2 appliance can promote mandible forward earlier before leveling the teeth compared to the traditional method, thus taking more advantages of the patients’ growth potential.%目的:采用McNamara分析法评价改良SUS2矫治器矫治安氏Ⅱ类错牙合的效果。方法分别采用改良SUS2矫治器和传统SUS2矫治器治疗共20例安氏Ⅱ类错牙合,对治疗前后头颅侧位定位片采用McNamara分析进行分析比较。结果改良SUS2组和SUS2组都造成了上齿槽座点(A点)到鼻根点到眶耳平面(N⁃FH)垂线距离的减小,分别减小了0.6 mm和0.4 mm。下切牙切缘沿功能牙合平面(function occlusal plane,FOP)前移了分别为0.3 mm和1.5 mm。对于下切牙切缘到上齿槽座点与颏前点连线( L1–Apo),则分别前移了0.6 mm和2.5 mm。结论改良SUS2矫治器可以取得和传统SUS2矫治器相似的临床效果,但允许在排齐牙列之前就前伸下颌,可以更好地利用患者的生长潜力。

  20. Avaliação das alterações do plano oclusal em telerradiografias em norma lateral no tratamento de más oclusões de Classe II, 1ª divisão, com Bionator de Balters, em pacientes retrovertidos, neutrovertidos e provertidos Evaluation of occlusal plane changes in retroverted, neutroverted and proverted patients, with Class II, division 1, malocclusion treated with Balters' Bionator

    Directory of Open Access Journals (Sweden)

    Ingrid Madeira de Barros Nunes

    2007-01-01

    Full Text Available OBJETIVO: este trabalho objetiva verificar as alterações do plano oclusal funcional de Ricketts, utilizando as variáveis que orientam este plano nas análises cefalométricas de Ricketts e Schawrz-Faltin, em pacientes portadores de má oclusão de Classe II de Angle, 1ª divisão, associada ao retrognatismo mandibular, cuja terapêutica indicada tenha sido a Bionatorterapia. METODOLOGIA: a amostra coletada neste estudo retrospectivo consta de 128 telerradiografias em norma lateral de 64 indivíduos retrovertidos, neutrovertidos e provertidos, de ambos os gêneros, no estágio de desenvolvimento da oclusão em fase mista ou permanente jovem. A faixa etária dos indivíduos selecionados para o estudo variou entre 7 anos e 1 mês a 13 anos e 2 meses no momento T1, sendo a média inicial de 10 anos de idade. A média de duração do tratamento foi de 19,7 meses. RESULTADOS E CONCLUSÃO: os resultados mostraram comportamentos distintos do plano oclusal, conforme o tipo facial retrovertido, neutrovertido ou provertido. O controle do plano oclusal na Bionatorterapia, pelo manejo do Bionator conforme o tipo facial de cada paciente, por meio de desgastes seletivos no acrílico e conseqüente erupção diferenciada dos dentes, pode influenciar favoravelmente o crescimento geral da face em cada tipo facial.AIM: This work aims to verify the changes of Ricketts functional occlusal plane making use of variables which guide this same plane in the cephalometric analysis of Ricketts and Schwarz-Faltin among patients with Class II, division 1 malocclusion, associated to mandible retrognathism, whose therapy indicated has been Bionatortherapy. METHODS: The sample collected in this retrospective survey has 128 lateral cephalograms of 64 retroverted, neutroverted and proverted individuals, of both genders, at the stage of developing occlusion, either in mixed phase or permanent young. The age scale of individuals selected by the survey goes from 7 years and 1

  1. Molecular cloning of class III chitinase gene from Avicennia marina and its expression analysis in response to cadmium and lead stress.

    Science.gov (United States)

    Wang, Li-Ying; Wang, You-Shao; Zhang, Jing-Ping; Gu, Ji-Dong

    2015-10-01

    Mangrove species have high tolerance to heavy metal pollution. Chitinases have been widely reported as defense proteins in response to heavy metal stress in terrestrial plants. In this study, a full-length cDNA sequence encoding an acidic and basic class III chitinase (AmCHI III) was cloned by using RT-PCR and RACE methods in Avicennia marina. AmCHI III mRNA expression in leaf of A. marina were investigated under Cd, Pb stresses on using real-time quantitative PCR. The deduced AmCHI III protein consists of 302 amino acids, including a signal putative peptide region, and a catalytic domain. Homology modeling of the catalytic domain revealed a typical molecular structure of class III plant chitinases. Results further demonstrated that the regulation of AmCHI III mRNA expression in leaves was strongly dependent on Cd, Pb stresses. AmCHI III mRNA expressions were significantly increased in response to Cd, Pb, and peaked at 7 days Cd-exposure, 7 days Pb-exposure, respectively. AmCHI III mRNA expression exhibited more sensitive to Pb stress than Cd stress. This work was the first time cloing chitinase from A. marina, and it brought evidence on chitinase gene involving in heavy metals (Cd(2+) and Pb(2+)) resistance or detoxification in plants. Further studies including the promoter and upstream regulation, gene over-expression and the response of mangrove chitinases to other stresses will shed more light on the role of chitinase in mangrove plants. PMID:26044930

  2. Clinical treatment approach of a child with molar incisor hypomineralization (MIH combined with malocclusion.

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    Rossitza Kabaktchieva

    2012-04-01

    Full Text Available Introduction. Molar incisor hypomineralization (MIH was defined as "hypomineralisation of systemic origin of permanent first molars, frequently associated with affected incisors". MIH includes the presence of demarcated opacity, post eruptive enamel breakdown, atypical restoration. Тhe approach to management suggested: risk identification, early diagnosis, remineralization for prevention of caries and post eruption breakdown, restorations. The clinicians very seldom notice that children with MIH usually have both- hypomineralisation and malocclusions, and they do not discuss combine treatment plan.Aim. To present our interdisciplinary approach to a patient with MIH, combined with malocclusion.Material and methods. We are presenting 9 year old child with contusio and fractura coronae dentis noncomplicata, distal occlusion, overjet, overbite and retrusion. Two consecutive stages were defined: First stage:- Professional oral hygiene and local remineralisation therapy- Vital pulp therapy of tooth 21 - Space gaining for restoration of the lost height of the molars by the means of posterior bite-plane removable appliance- Restoration of the molars with metal inlays- Lingual tipping of the lower incisorsSecond stage:- Class II correction- Growth control Results.First phase: - The tooth 21 was restored with aesthetic composite material;- Occlusion was raised with occlusal restorations (inleys and orthodontic appliance. Second phase:Medialisation of mandible and holding maxillary growth with functional appliance and occipital EOA until class one occlusal relations.Conclusion. Children with MIH should be examined and treated complex in collaboration with orthodontist and if necessary by other specialists too.

  3. Treatment of division II malocclusion in young adult with Forsus™ fatigue-resistant device

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    U S Krishna Nayak

    2012-01-01

    Full Text Available The traditional technique for correcting class II malocclusion - involving the use of class II elastics and headgear - has been problematic due to its dependence on patient compliance. Functional orthopedic treatment seeks to correct malocclusions and harmonize the shape of the dental arch and orofacial functions. Removable functional appliances are normally very large in size, have unstable fixation, cause discomfort, exert pressure on the mucosa, reduce space for the tongue, cause difficulties in deglutition and speech, and very often affect esthetic appearance. With a fixed appliance like the Forsus™ fatigue-resistant device (FRD, as the appliance is fixed, there is less dependence on patient compliance and the remaining growth after the pubertal growth spurt can be harbored effectively. The Forsus™ FRD is not as rigid as the previous fixed functional appliances and hence is comfortable for the patients. In this case report we describe a patient at the end of the growth stage who had mandibular retrognathia and was successfully treated with the Forsus™ FRD.

  4. Class III β-tubulin is a predictive marker for taxane-based chemotherapy in recurrent and metastatic gastric cancer

    International Nuclear Information System (INIS)

    Class III β-tubulin (TUBB3) is a prognostic marker in various tumors, but the role of TUBB3 in advanced gastric cancer is not clearly defined. We analyzed the significance of TUBB3 expression, along with that of excision repair cross-complementation group 1 (ERCC1) in recurrent and metastatic gastric cancer patients receiving taxane-based first-line palliative chemotherapy. We reviewed the cases of 146 patients with advanced gastric adenocarcinoma who received taxane-based first-line palliative chemotherapy between 2004 and 2010 at Chonnam National University Hwasun Hospital (Gwangju, Korea). Immunohistochemical staining for TUBB3 and ERCC1 was performed using paraffin wax-embedded tumor tissues. We evaluated the patients’ response to chemotherapy, progression-free survival (PFS), and overall survival (OS). In total, 146 patients with advanced gastric cancer received docetaxel and cisplatin (n = 15) or paclitaxel and cisplatin (n = 131). The median PFS was significantly shorter for patients with high-level TUBB3 expression than for patients with low-level TUBB3 expression (3.63 vs. 6.67 months, P = 0.001). OS was not associated with TUBB3 expression (13.1 vs. 13.1 months, P = 0.769). By multivariate analysis, only TUBB3 was related to a shorter PFS (HR 2.74, 95% CI 1.91-3.91, P = 0.001). Patients with high-level ERCC1 expression showed a lower response rate than patients with low-level ERCC1 expression (24 vs. 63.2%, P = 0.001); however, ERCC1 had no clinical effect on PFS or OS. TUBB3 was a strong predictive marker in recurrent and metastatic gastric cancer patients receiving taxane-based first-line palliative chemotherapy. No clinical impact of ERCC1 was evident in this setting

  5. The ERECTA, CLAVATA and class III HD-ZIP Pathways Display Synergistic Interactions in Regulating Floral Meristem Activities.

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    Udi Landau

    Full Text Available In angiosperms, the production of flowers marks the beginning of the reproductive phase. At the emergence of flower primordia on the flanks of the inflorescence meristem, the WUSCHEL (WUS gene, which encodes a homeodomain transcription factor starts to be expressed and establishes de novo stem cell population, founder of the floral meristem (FM. Similarly to the shoot apical meristem a precise spatial and temporal expression pattern of WUS is required and maintained through strict regulation by multiple regulatory inputs to maintain stem cell homeostasis. However, following the formation of a genetically determined fixed number of floral organs, this homeostasis is shifted towards organogenesis and the FM is terminated. In here we performed a genetic study to test how a reduction in ERECTA, CLAVATA and class III HD-ZIP pathways affects floral meristem activity and flower development. We revealed strong synergistic phenotypes of extra flower number, supernumerary whorls, total loss of determinacy and extreme enlargement of the meristem as compared to any double mutant combination indicating that the three pathways, CLV3, ER and HD-ZIPIII distinctively regulate meristem activity and that they act in parallel. Our findings yield several new insights into stem cell-driven development. We demonstrate the crucial requirement for coupling floral meristem termination with carpel formation to ensure successful reproduction in plants. We also show how regulation of meristem size and alternation in spatial structure of the meristem serve as a mechanism to determine flower organogenesis. We propose that the loss of FM determinacy due to the reduction in CLV3, ER and HD-ZIPIII activity is genetically separable from the AGAMOUS core mechanism of meristem termination.

  6. Cell wall-bound cationic and anionic class III isoperoxidases of pea root: biochemical characterization and function in root growth.

    Science.gov (United States)

    Kukavica, Biljana M; Veljovicc-Jovanovicc, Sonja D; Menckhoff, Ljiljana; Lüthje, Sabine

    2012-07-01

    Cell wall isolated from pea roots was used to separate and characterize two fractions possessing class III peroxidase activity: (i) ionically bound proteins and (ii) covalently bound proteins. Modified SDS-PAGE separated peroxidase isoforms by their apparent molecular weights: four bands of 56, 46, 44, and 41kDa were found in the ionically bound fraction (iPOD) and one band (70kDa) was resolved after treatment of the cell wall with cellulase and pectinase (cPOD). Isoelectric focusing (IEF) patterns for iPODs and cPODs were significantly different: five iPODs with highly cationic pI (9.5-9.2) were detected, whereas the nine cPODs were anionic with pI values between pH 3.7 and 5. iPODs and cPODs showed rather specific substrate affinity and different sensitivity to inhibitors, heat, and deglycosylation treatments. Peroxidase and oxidase activities and their IEF patterns for both fractions were determined in different zones along the root and in roots of different ages. New iPODs with pI 9.34 and 9.5 were induced with root growth, while the activity of cPODs was more related to the formation of the cell wall in non-elongating tissue. Treatment with auxin that inhibits root growth led to suppression of iPOD and induction of cPOD. A similar effect was obtained with the widely used elicitor, chitosan, which also induced cPODs with pI 5.3 and 5.7, which may be specifically related to pathogen defence. The differences reported here between biochemical properties of cPOD and iPOD and their differential induction during development and under specific treatments implicate that they are involved in specific and different physiological processes. PMID:22760472

  7. Down syndrome: a risk factor for malocclusion severity?

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    Leandro Silva MARQUES

    2015-01-01

    Full Text Available The aims of the present study were to compare aspects related to malocclusion between individuals with Down syndrome (DS and a control group, establish malocclusion severity, and identify determinant factors. A total of 120 individuals (60 with DS and 60 with no physical or mental impairment, were included in the study. Data were collected through interviews, analyses of the medical charts, and oral examinations. The criteria of the Dental Aesthetic Index were used for the diagnosis of malocclusion. Chi-square test (p ≤ 0.05 and multivariate logistic regression were used for comparisons between the two groups and to determine the association between the dependent (malocclusion severity and independent variables. Statistically significant differences were found between the two groups for the following variables: missing teeth, diastema, overjet, mandibular protrusion, anterior open bite, posterior crossbite, facial type, lip incompetence, and Angle classification. DS, a history of premature birth, and long face pattern were found to be associated with malocclusion severity. Individuals with DS exhibited more occlusal problems than those in the control group.

  8. Apresentação de um caso clínico de Classe III de Angle, tratado com o aparelho extrabucal basculante inferior de ação reversa, proposto por Baptista Apresentation of a Angle Class III clinic case, treated with lower headgear of reverse action appliance, suggested by Baptista

    OpenAIRE

    Sylvio Gonçalves Filho; Andrea Chaves; Miguel Neil Benvenga

    2005-01-01

    As más oclusões de Classe III são as de menor incidência em nossas clínicas. Porém, a intervenção precoce têm-se mostrado muito importante para que não haja um agravamento do quadro, influenciando o comportamento psicossocial do paciente. Neste artigo serão demonstrados os resultados com um aparelho muito simples de usar, com boa colaboração dos pacientes e resultados animadores.Early treatment in patients with Class III maloclusion can avoid psychological disordes.The effects of orthopedic t...

  9. 自锁托槽结合平面导板在安氏Ⅱ类2分类错牙合畸形中的应用研究%Clinical comparative study on the self-locking brackets combined with occlusal guide for angle classIIdivision 2 malocclusion

    Institute of Scientific and Technical Information of China (English)

    李渤; 黄家全; 柏钢; 骆秋郧

    2015-01-01

    used to assess the alteration in hard tissue,and measurements of width and arch length of dentition were made on dental casts to investigate changes associated with the correction.Paired t- tests and group t- tests were used instatistical analysis. Results There was significant increase in length and widths of dental arch with self- ligating and conventional bracket after treatment,there was no significant differences between self- ligatiing and conventional group ( P>0.05);both group were enlarged in widths of the Basal Bone arch after treatment,there was significant differences between self- ligatiing and conventional group ( P<0.05);both groups were no enlarged in length of the maxillary Basal Bone arch after treatment, but they were enlarged in the mandibular Basal Bone arch , also there was significant increase in U1- SNoand L1- MPoin both groups,but there were no significant difference between self- ligating and conventional bracket groups;there was significant change in treat time between two groups, self- ligating groups were less. Conclusion Self- ligating bracket system can cause the proclination of the incisors and increase the arch and Basal Bone width to some degree,It is good to unlock from three dimensional Direction.Self- ligating bracket was better than conventional bracket for increase Basal Bone width.It can prevents the bracket off and open bit quickly combined with occlusal guide,and Shortening the treatment time.Particularly suited for angle class II division 2 malocclusion.

  10. Prevalência de má oclusão em crianças entre 6 e 10 anos: um panorama brasileiro An overview of the prevalence of malocclusion in 6 to 10-year old children in Brazil

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    Marcos Alan Vieira Bittencourt

    2010-12-01

    Full Text Available OBJETIVO: estabelecer um panorama da ocorrência de más oclusões em crianças brasileiras de 6 a 10 anos de idade, além de duas situações clínicas frequentemente associadas a elas, a cárie e a perda prematura de dentes decíduos. MÉTODOS: a amostra selecionada foi aleatória e intencional, tendo-se avaliado 4.776 crianças. A coleta dos dados foi realizada por meio de exame clínico e anamnese, como parte da campanha "Prevenir é melhor que tratar", conduzida em 18 estados brasileiros e no Distrito Federal, com a participação de ortodontistas filiados à Associação Brasileira de Ortodontia e Ortopedia Facial (ABOR. RESULTADOS E CONCLUSÕES: verificou-se que apenas 14,83% das crianças eram portadoras de oclusão normal, enquanto 85,17% possuíam algum tipo de alteração oclusal - sendo 57,24% portadoras de má oclusão de Classe I; 21,73%, de Classe II e 6,2%, de Classe III. Observou-se, também, a ocorrência de mordida cruzada em 19,58% das crianças, sendo 10,41%, na região anterior e 9,17% na posterior; de sobremordida profunda em 18,09%; e de mordida aberta em 15,85%. Cárie e/ou perdas dentárias estavam presentes em 52,97% das crianças. Além disso, verificou-se a possibilidade de intervenção ortodôntica preventiva em 72,34% das crianças examinadas, e interceptora em 60,86%. Sendo assim, destaca-se que a presença, nos postos públicos de saúde, de um especialista em Ortodontia, com qualificação que atenda aos padrões estabelecidos pela ABOR e pela World Federation of Orthodontists (WFO, pode beneficiar sobremaneira as crianças carentes brasileirasOBJECTIVES: To provide an overview of the malocclusions present in Brazilian children aged 6 to 10 years, and present two clinical situations often associated with these malocclusions, i.e., caries and premature loss of deciduous teeth. METHODS: A sample comprised of 4776 randomly and intentionally selected children was evaluated. Data collection was performed by clinical

  11. Evaluación de la maloclusión, alteraciones funcionales y hábitos orales en una población escolar: Tarragona y Barcelona Evaluation of malocclusion, functional and oral habits alteration in a school student population: Tarragona and Barcelona

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    V.J. García García

    2011-04-01

    : 1051 schoolchildren were included in the study with a mean age of 9.32 years. 72.8% presented as Angle Class I, 19.0% and 5.2% Class II / 1 and II / 2, respectively and 2.9% Class III. Nail biting habit was the most frequent habit with 46.4%. The highest level of functional limitation was tonsils hypertrophy with 21.2%. There is a statically significant relationship between sagittal malocclusion and respiration type and tongue mobility, and between horizontal malocclusion and digital suction and tongue mobility (p<0.05. Conclusions: The diagnosis of functional disorders and oral habits can be a warning of the presence of malocclusion.

  12. TaqMan Probe-Based Real-Time PCR Assay for Detection and Discrimination of Class I, II, and III tfdA Genes in Soils Treated with Phenoxy Acid Herbicides▿ †

    OpenAIRE

    Bælum, Jacob; Jacobsen, Carsten S.

    2009-01-01

    Separate quantification of three classes of tfdA genes was performed using TaqMan quantitative real-time PCR for 13 different soils subsequent to mineralization of three phenoxy acids. Class III tfdA genes were found to be involved in mineralization more often than class I and II tfdA genes.

  13. Estudo comparativo das dimensões transversais dos arcos dentários entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão A comparative study of arch widths of white Brazilians with normal occlusion and Class II, Division 1, malocclusion

    OpenAIRE

    Rejman Roberto; Décio Rodrigues Martins; Helio Scavone Jr.; Flávio Augusto Cotrim-Ferreira; Flávio Vellini-Ferreira

    2006-01-01

    OBJETIVO: avaliar as possíveis diferenças nas dimensões transversais dos arcos dentários superiores e inferiores entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão. METODOLOGIA: foram avaliados 170 pares de modelos em gesso de jovens brasileiros leucodermas, com dentadura permanente, sendo 76 com oclusão normal (41 do gênero feminino e 35 do masculino) e média de idade de 13 anos e 6 meses e 94 com má oclusão de Classe II, 1ª divisão (58 do gênero feminino e 36 do masculino...

  14. Association between class III obesity (BMI of 40-59 kg/m2 and mortality: a pooled analysis of 20 prospective studies.

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    Cari M Kitahara

    2014-07-01

    Full Text Available BACKGROUND: The prevalence of class III obesity (body mass index [BMI]≥40 kg/m2 has increased dramatically in several countries and currently affects 6% of adults in the US, with uncertain impact on the risks of illness and death. Using data from a large pooled study, we evaluated the risk of death, overall and due to a wide range of causes, and years of life expectancy lost associated with class III obesity. METHODS AND FINDINGS: In a pooled analysis of 20 prospective studies from the United States, Sweden, and Australia, we estimated sex- and age-adjusted total and cause-specific mortality rates (deaths per 100,000 persons per year and multivariable-adjusted hazard ratios for adults, aged 19-83 y at baseline, classified as obese class III (BMI 40.0-59.9 kg/m2 compared with those classified as normal weight (BMI 18.5-24.9 kg/m2. Participants reporting ever smoking cigarettes or a history of chronic disease (heart disease, cancer, stroke, or emphysema on baseline questionnaires were excluded. Among 9,564 class III obesity participants, mortality rates were 856.0 in men and 663.0 in women during the study period (1976-2009. Among 304,011 normal-weight participants, rates were 346.7 and 280.5 in men and women, respectively. Deaths from heart disease contributed largely to the excess rates in the class III obesity group (rate differences = 238.9 and 132.8 in men and women, respectively, followed by deaths from cancer (rate differences = 36.7 and 62.3 in men and women, respectively and diabetes (rate differences = 51.2 and 29.2 in men and women, respectively. Within the class III obesity range, multivariable-adjusted hazard ratios for total deaths and deaths due to heart disease, cancer, diabetes, nephritis/nephrotic syndrome/nephrosis, chronic lower respiratory disease, and influenza/pneumonia increased with increasing BMI. Compared with normal-weight BMI, a BMI of 40-44.9, 45-49.9, 50-54.9, and 55-59.9 kg/m2 was associated with an

  15. Estudo cefalométrico das alterações dentoesqueléticas da má oclusão de Classe II, divisão 1 tratada com o aparelho de Herbst com cantiléver Cephalometric study in patients that displayed Class II, division 1 malocclusion treated with herbst appliance

    OpenAIRE

    Ana Carla Raphaelli Nahás; José Fernando Castanha Henriques; Guilherme Janson; Bryan D. Tompson; Donald G. Woodside

    2008-01-01

    OBJETIVO: Realizou-se um estudo cefalométrico, em telerradiografias, objetivando-se determinar os efeitos no complexo craniofacial de pacientes com más oclusões de Classe II, divisão 1 submetidos ao tratamento com o aparelho de Herbst com cantiléver. METODOLOGIA: Para tanto, utilizou-se uma amostra composta por dois grupos, sendo um experimental e um controle. O grupo experimental originou-se da Faculdade de Odontologia de Bauru - USP, com 25 pacientes tratados com o aparelho ortopédico funci...

  16. The activity of class I, II, III and IV of alcohol dehydrogenase (ADH) isoenzymes and aldehyde dehydrogenase (ALDH) in brain cancer.

    Science.gov (United States)

    Laniewska-Dunaj, Magdalena; Jelski, Wojciech; Orywal, Karolina; Kochanowicz, Jan; Rutkowski, Robert; Szmitkowski, Maciej

    2013-07-01

    The brain being highly sensitive to the action of alcohol is potentially susceptible to its carcinogenic effects. Alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) are the main enzymes involved in ethanol metabolism, which leads to the generation of carcinogenic acetaldehyde. Human brain tissue contains various ADH isoenzymes and possess also ALDH activity. The purpose of this study was to compare the capacity for ethanol metabolism measured by ADH isoenzymes and ALDH activity in cancer tissues and healthy brain cells. The samples were taken from 62 brain cancer patients (36 glioblastoma, 26 meningioma). For the measurement of the activity of class I and II ADH isoenzymes and ALDH activity, the fluorometric methods were used. The total ADH activity and activity of class III and IV isoenzymes were measured by the photometric method. The total activity of ADH, and activity of class I ADH were significantly higher in cancer cells than in healthy tissues. The other tested classes of ADH and ALDH did not show statistically significant differences of activity in cancer and in normal cells. Analysis of the enzymes activity did not show significant differences depending on the location of the tumor. The differences in the activity of total alcohol dehydrogenase, and class I isoenzyme between cancer tissues and healthy brain cells might be a factor for metabolic changes and disturbances in low mature cancer cells and additionally might be a reason for higher level of acetaldehyde which can intensify the carcinogenesis.

  17. A study of the effectiveness for response to loss of Class IV power of one standby Class III generator operating in a continuous or test cycle mode

    International Nuclear Information System (INIS)

    This paper presents the results of a reliability study that models, evaluates and compares the effectiveness for response to loss of Class 4 power (LOCLIV) of a single available Class 3 standby generator (SG) at an operating CANDU plant. The modelling is based upon operating and licensing considerations at Point Lepreau Generating Station (PLGS) and is applicable to cases where one of its two SG's is out of service for maintenance when a LOCLIV event occurs. The different licensing requirements for two modes of SG operation, either continuous or in a series of successive testing cycles, when the reactor is shut down or operating at power, have been modelled. Techniques have been developed to convolve the modelled probability of occurrence of a LOCLIV at a particular time instant with the probability of successful SG response and Class 3 system reconfiguration from the existing operational state tot he required safety response state. The concepts, techniques and models developed to measure the response to a LOCLIV event by an SG in continuous or cyclic mode of operation are described in this paper. (author). 6 refs., 3 tabs., 10 figs

  18. Cone-Beam Computed Tomography Assessment of Lower Facial Asymmetry in Unilateral Cleft Lip and Palate and Non-Cleft Patients with Class III Skeletal Relationship.

    Directory of Open Access Journals (Sweden)

    Yifan Lin

    Full Text Available To evaluate, using cone-beam computed tomography (CBCT, both the condylar-fossa relationships and the mandibular and condylar asymmetries between unilateral cleft lip and palate (UCLP patients and non-cleft patients with class III skeletal relationship, and to investigate the factors of asymmetry contributing to chin deviation.The UCLP and non-cleft groups consisted of 30 and 40 subjects, respectively, in mixed dentition with class III skeletal relationships. Condylar-fossa relationships and the dimensional and positional asymmetries of the condyles and mandibles were examined using CBCT. Intra-group differences were compared between two sides in both groups using a paired t-test. Furthermore, correlations between each measurement and chin deviation were assessed.It was observed that 90% of UCLP and 67.5% of non-cleft subjects had both condyles centered, and no significant asymmetry was found. The axial angle and the condylar center distances to the midsagittal plane were significantly greater on the cleft side than on the non-cleft side (P=0.001 and P=0.028, respectively and were positively correlated with chin deviation in the UCLP group. Except for a larger gonial angle on the cleft side, the two groups presented with consistent asymmetries showing shorter mandibular bodies and total mandibular lengths on the cleft (deviated side. The average chin deviation was 1.63 mm to the cleft side, and the average absolute chin deviation was significantly greater in the UCLP group than in the non-cleft group (P=0.037.Compared with non-cleft subjects with similar class III skeletal relationships, the subjects with UCLP showed more severe lower facial asymmetry. The subjects with UCLP presented with more asymmetrical positions and rotations of the condyles on axial slices, which were positively correlated with chin deviation.

  19. Crescimento da base craniana nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III: Parte 2 (Crescimento médio de Ba-Na, CC-Na e CC-Ba Cranial base growth in different facial types in Class I, II and III orthopedic maxillomandibular relationship: Part 2 (Mean growth of Ba-Na, CC-Na and CC-Ba

    Directory of Open Access Journals (Sweden)

    Lucelma Vilela Pieri

    2007-04-01

    Full Text Available OBJETIVO: este estudo retrospectivo avaliou o crescimento médio da base craniana nos diferentes tipos faciais e de relacionamentos maxilomandibulares ortopédicos.METODOLOGIA: uma amostra aleatória de 300 pacientes brasileiros leucodermas (131 do gênero masculino, 169 do gênero feminino, com idade média inicial de 10 anos e 2 meses (dentadura mista e final de 14 anos e 8 meses (segundos molares em oclusão e tempo médio de observação de 4 anos e 5 meses, foi selecionada em uma clínica particular, em São Paulo, Brasil. Havia 118 Classe I, 151 Classe II e 31 Classe III. Todas as 600 radiografias cefalométricas laterais foram obtidas no mesmo aparelho de raios-x. As análises de Ricketts e Schwarz modificadas por Faltin foram usadas. As medidas lineares (Ba-Na, CC-Na e CC-Ba foram feitas manualmente pelo mesmo examinador em T1 e T2. Os relacionamentos foram estudados juntos e separadamente, considerando tipo facial e gênero. O teste t-pareado e ANOVA foram aplicados. RESULTADOS E CONCLUSÕES: o tipo facial retrovertido cresceu significantemente mais em CC-Na na Classe II, sendo a sua correção desfavorável no gênero feminino; com tendência favorável na Classe III e crescimento dentro do esperado na Classe I. O neutrovertido cresceu significantemente mais em CC-Na nas Classes I e II, sendo desfavorável na Classe II; com crescimento eqüitativo de CC-Na e CC-Ba na Classe III e levemente acima do esperado na Classe I. O provertido teve crescimento eqüitativo em todas as Classes, sendo significantemente favorável na Classe II mandibular; com tendência favorável na Classe III e crescimento médio acima do esperado na Classe I.AIM: This retrospective study evaluated the cranial base mean growth in different facial types and orthopedic maxillomandibular relationship. METHODS: A random sample of 300 Brazilian Caucasian patients (131 males, 169 females, initial and final mean age (10 years 2 months-mixed dentition; 14 years 8 months

  20. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin), Class III

    Energy Technology Data Exchange (ETDEWEB)

    Dutton, Shirley P.; Flanders, William A.

    2001-11-04

    The objective of this Class III project was demonstrate that reservoir characterization and enhanced oil recovery (EOR) by CO2 flood can increase production from slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico. Phase 1 of the project, reservoir characterization, focused on Geraldine Ford and East Ford fields, which are Delaware Mountain Group fields that produce from the upper Bell Canyon Formation (Ramsey sandstone). The demonstration phase of the project was a CO2 flood conducted in East Ford field, which is operated by Orla Petco, Inc., as the East Ford unit.

  1. Relationship of physical activity and weight loss in women with Class II and Class III obesity: Mediation of exercise-induced changes in tension and depression

    OpenAIRE

    Annesi, James J.

    2010-01-01

    El ejercicio físico predice tanto la pérdida de peso como la mejora en el estado de ánimo. Debido al gasto energético mínimo relacionado con el ejercicio en personas obesas y a su pobre estado cardiovascular se sugirió que el cambio en el estado de ánimo inducido por el ejercicio puede mediar la relación de éste con la pérdida de peso. En el presente estudio experimental, mujeres con obesidad de Clase II y III (N = 75) participaron en un programa de ejercicio moderado y educación en nutrición...

  2. Application for Permit to Operate a Class III Solid Waste Disposal Site at the Nevada Test Site - U10c Disposal Site

    Energy Technology Data Exchange (ETDEWEB)

    NSTec Environmental Programs

    2010-08-05

    The NTS is located approximately 105 km (65 mi) northwest of Las Vegas, Nevada. NNSA/NSO is the federal lands management authority for the NTS and NSTec is the Management & Operations contractor. Access on and off the NTS is tightly controlled, restricted, and guarded on a 24-hour basis. The NTS is posted with signs along its entire perimeter. NSTec is the operator of all solid waste disposal sites on the NTS. The U10C Disposal Site is located in the northwest corner of Area 9 at the NTS (Figure 1) and is located in a subsidence crater created by two underground nuclear events, one in October 1962 and another in April 1964. The disposal site opened in 1971 for the disposal of rubbish, refuse, pathological waste, asbestos-containing material, and industrial solid waste. A Notice of Intent form to operate the disposal site as a Class II site was submitted to the state of Nevada on January 26, 1994, and was acknowledged in a letter to the DOE on February 8, 1994. It operated as a state of Nevada Class II Solid Waste Disposal Site (SWDS) until it closed on October 5, 1995, for retrofit as a Class III SWDS. The retrofit consisted of the installation of a minimum four-foot compacted soil layer to segregate the different waste types and function as a liner to inhibit leachate and water flow into the lower waste zone. Five neutron monitoring tubes were installed in this layer to monitor possible leachate production and water activity. Upon acceptance of the installed barrier and approval of an Operating Plan by NDEP/BFF, the site reopened in January 1996 as a Class III SWDS for the disposal of industrial solid waste and other inert waste.

  3. Apresentação de um caso clínico de Classe III de Angle, tratado com o aparelho extrabucal basculante inferior de ação reversa, proposto por Baptista Apresentation of a Angle Class III clinic case, treated with lower headgear of reverse action appliance, suggested by Baptista

    Directory of Open Access Journals (Sweden)

    Sylvio Gonçalves Filho

    2005-02-01

    Full Text Available As más oclusões de Classe III são as de menor incidência em nossas clínicas. Porém, a intervenção precoce têm-se mostrado muito importante para que não haja um agravamento do quadro, influenciando o comportamento psicossocial do paciente. Neste artigo serão demonstrados os resultados com um aparelho muito simples de usar, com boa colaboração dos pacientes e resultados animadores.Early treatment in patients with Class III maloclusion can avoid psychological disordes.The effects of orthopedic therapy an mandibular growth with Batista’s reverse arch is showd in this case, indicating that is possible to solve this maloclusion with efficacy.

  4. Can Dermatoglyphics Be Used as a Marker for Predicting Future Malocclusions?

    OpenAIRE

    Eslami, Neda; Jahanbin, Arezoo; Ezzati, Atefeh; Banihashemi, Elham; Kianifar, Hamidreza

    2016-01-01

    Introduction Dermal ridges and craniofacial structures form from the same embryonic tissues during the same embryonic period. Thus, this might indicate a possible association between dermatoglyphics and facial skeletal disorders, such as malocclusions. Early diagnosis of skeletal malocclusions sometimes can prevent future surgical procedures. The aim of this study was to compare the dermatoglyphic characteristics of different malocclusions. Methods In this cross-sectional study, 323 patients ...

  5. Investigation and analysis of the psychological impact of malocclusion on Junior high school students in Wujiaqu city%五家渠市初中生错牙合畸形对心理健康影响的调查分析

    Institute of Scientific and Technical Information of China (English)

    吴秋瑾; 贾德蛟; 刘海霞

    2016-01-01

    nationality, aging 11.49-16.55 years. And they received questionnaire survey based on Mental Health Inventory of Middle School Students and then were checked the registration according to Incisor Classiifcation and individual normal occlusion criterion. They were divided into ifve groups, including incisor Class I, Class II/1, Class II/2, Class III malocclusion and individual normal occlusion group. Statistical analysis involved Kruskal-Wallis H test.Results In terms of total average of the mental health, compulsive symptoms, hostility, interpersonal tension and sensitivity, anxiety, learning pressure and emotional imbalance, when we compared incisor Class I group, Class II/1 group, Class II/2 group, individual normal occlusion group with incisor class III group, psychological abnormality differences had no statistical signiifcance (P > 0.05). In terms of bigotry, depression, maladjustment, comparing the other 4 groups with incisor class III group, we could ifnd that abnormal psychological differences had statistical signiifcance (P0.0125). In terms of psychological imbalance, comparing incisor class III group with the other four groups, we could conclude that abnormal psychological differences were all statistically signiifcant (P<0.0125), psychological abnormality ratio of incisor class III group was higher than the rest of the four groups.ConclusionsMalocclusion has a certain adverse impact on mental health of junior middle school students, especially the incisor class III. We should encourage junior middle school students with malocclusion to receive orthodontic treatment as soon as possible,giving guidance and intervention to the psychological problems that may occur.

  6. Two-Stage Mucogingival Surgery with Free Gingival Autograft and Biomend Membrane and Coronally Advanced Flap in Treatment of Class III Millers Recession.

    Science.gov (United States)

    Rath, Avita; Varma, Smrithi; Paul, Renny

    2016-01-01

    Introduction. Gingival recession is an apical shift of the gingival margin with exposure of the root surface. This migration of the marginal tissue leads to esthetic concerns, dentin hypersensitivity, root caries, and cervical wear. It is, paradoxically, a common finding in patients with a high standard of oral hygiene, as well as in periodontally untreated populations with poor oral hygiene. Changing the topography of the marginal soft tissue in order to facilitate plaque control is a common indication for root coverage procedures and forms a major aspect of periodontal plastic surgeries. The regeneration of a new connective tissue attachment to denuded root surface is by allowing the selective coronal regrowth of periodontal ligament cells while excluding the gingival tissues from the root during wound healing by means of a barrier membrane. Case Presentation. This case reports a two-stage surgical technique for treatment of Miller's class III defect using free gingival autograft and type I absorbable collagen membrane (BioMend®, Zimmer Dental, USA)(§). Conclusions. The 6-month follow-up of the case showed a significant increase in attached gingiva suggesting it as a predictable alternative in the treatment of Millers class III defects. PMID:27525131

  7. Molecular Cloning and Characterization of a Vacuolar Class III Peroxidase Involved in the Metabolism of Anticancer Alkaloids in Catharanthus roseus1[C

    Science.gov (United States)

    Costa, Maria Manuela R.; Hilliou, Frederique; Duarte, Patrícia; Pereira, Luís Gustavo; Almeida, Iolanda; Leech, Mark; Memelink, Johan; Barceló, Alfonso Ros; Sottomayor, Mariana

    2008-01-01

    Catharanthus roseus produces low levels of two dimeric terpenoid indole alkaloids, vinblastine and vincristine, which are widely used in cancer chemotherapy. The dimerization reaction leading to α-3′,4′-anhydrovinblastine is a key regulatory step for the production of the anticancer alkaloids in planta and has potential application in the industrial production of two semisynthetic derivatives also used as anticancer drugs. In this work, we report the cloning, characterization, and subcellular localization of an enzyme with anhydrovinblastine synthase activity identified as the major class III peroxidase present in C. roseus leaves and named CrPrx1. The deduced amino acid sequence corresponds to a polypeptide of 363 amino acids including an N-terminal signal peptide showing the secretory nature of CrPrx1. CrPrx1 has a two-intron structure and is present as a single gene copy. Phylogenetic analysis indicates that CrPrx1 belongs to an evolutionary branch of vacuolar class III peroxidases whose members seem to have been recruited for different functions during evolution. Expression of a green fluorescent protein-CrPrx1 fusion confirmed the vacuolar localization of this peroxidase, the exact subcellular localization of the alkaloid monomeric precursors and dimeric products. Expression data further supports the role of CrPrx1 in α-3′,4′-anhydrovinblastine biosynthesis, indicating the potential of CrPrx1 as a target to increase alkaloid levels in the plant. PMID:18065566

  8. The Effect of early physiotherapy on the recovery of mandibular function after orthognathic surgery for Class III correction: part I--jaw-motion analysis.

    Science.gov (United States)

    Teng, Terry Te-Yi; Ko, Ellen Wen-Ching; Huang, Chiung Shing; Chen, Yu-Ray

    2015-01-01

    The aim of this prospective study was to compare the mandibular range of motion in Class III patients with and without early physiotherapy after orthognathic surgery (OGS). This study consisted of 63 Class III patients who underwent 2-jaw OGS. The experimental group comprised 31 patients who received early systematic physical rehabilitation. The control group consisted of 32 patients who did not have physical rehabilitation. Twelve variables of 3-dimensional (3D) jaw-motion analysis (JMA) were recorded before surgery (T1) and 6 weeks (T2) and 6 months (T3) after surgery. A 2-sample t test was conducted to compare the JMA results between the two groups at different time points. At T2, the JMA data were measured to be 77.5%-145.7% of presurgical values in the experimental group, and 60.3%-90.6% in the control group. At T3, the measurements were 112.2%-179.2% of presurgical values in the experimental group, and 77.6%-157.2% in the control group. The patients in the experimental group exhibited more favorable recovery than did those in the control group, from T1 to T2 and T1 to T3. However, after termination of physiotherapy, no significant difference in the extent of recovery was observed between groups up to 6 months after OGS.

  9. Two-Stage Mucogingival Surgery with Free Gingival Autograft and Biomend Membrane and Coronally Advanced Flap in Treatment of Class III Millers Recession

    Science.gov (United States)

    Paul, Renny

    2016-01-01

    Introduction. Gingival recession is an apical shift of the gingival margin with exposure of the root surface. This migration of the marginal tissue leads to esthetic concerns, dentin hypersensitivity, root caries, and cervical wear. It is, paradoxically, a common finding in patients with a high standard of oral hygiene, as well as in periodontally untreated populations with poor oral hygiene. Changing the topography of the marginal soft tissue in order to facilitate plaque control is a common indication for root coverage procedures and forms a major aspect of periodontal plastic surgeries. The regeneration of a new connective tissue attachment to denuded root surface is by allowing the selective coronal regrowth of periodontal ligament cells while excluding the gingival tissues from the root during wound healing by means of a barrier membrane. Case Presentation. This case reports a two-stage surgical technique for treatment of Miller's class III defect using free gingival autograft and type I absorbable collagen membrane (BioMend®, Zimmer Dental, USA)§. Conclusions. The 6-month follow-up of the case showed a significant increase in attached gingiva suggesting it as a predictable alternative in the treatment of Millers class III defects. PMID:27525131

  10. MALOCCLUSIONS AND QUALITY OF LIFE. Cross-sectional and longitudinal studies in children.

    Science.gov (United States)

    Dimberg, Lillemor

    2015-01-01

    There are few longitudinal studies of the prevalence of malocclusions and possible self-correction of malocclusions during the development of the dentition. Early intervention might be unnecessary if self-correction of the malocclusion occurs during the transition from the primary to the permanent dentition. Most studies are cross-sectional and in those of longitudinal design, the results are inconsistent and difficult to interpret. Malocclusions may or may not influence the quality of life in children and adolescents. Thus, evaluations of the influence of different malocclusions on quality of life will certainly underpin a broader understanding and knowledge about how malocclusions affect the daily life of young patients. This information may also be important when it comes to assessing the most appropriate time for starting orthodontic treatment, not only from a professional point of view, but also, most importantly, from the patients' perspective. The overall aim of this thesis was therefore to evaluate the prevalence of malocclusions, and to document changes occurring during the development of the dentition, from the primary dentition stage at age 3, through the mixed dentition at age 7, to the early permanent dentition at age 11.5 years. Further aims were to review the current state of knowledge about the impact of malocclusions on oral health related quality of life (OHRQoL) and to investigate how malocclusions affect the quality of life in a cohort of children, aged 11.5 years, whose dental care is provided by the Swedish Public Dental Service.

  11. The effect of implant placement in patients with either Kennedy class II and III on oral health-related quality of life: a prospective clinical trial.

    Science.gov (United States)

    van Eekeren, P J A; Aartman, I H A; Tahmaseb, A; Wismeijer, D

    2016-04-01

    There is little evidence of the effect of implants restored with fixed partial dentures on oral health-related quality of life (OHRQoL) in partially edentulous Kennedy class II and III patients. The aim of this study was to determine the change in OHRQoL in Kennedy classification II and III patients treated with a two-implant-supported fixed dental prosthesis (FDP). Kennedy class II and III patients received dental implants and an FDP. Oral health-related quality of life was measured by administration of the Oral Health Impact Profile-14 (OHIP-14NL) questionnaire at intake (T1), 2 weeks after surgery (T2) and after 1 year of loading (T3). The mean OHIP score at T1 was 6·5 ± 1·2, 2·4 ± 1·0 at T2, and 0·9 ± 0·3 at T3. There was a statistically significant difference between T1 and T2 (P = 0·002) and T1 and T3 (P < 0·001) but not between T2 and T3 (P = 0·407). The OHIP score in Kennedy II patients decreased from 4·8 ± 3·2 at T1 to 1·5 ± 2·0 at T2 and 1·1 ± 1·8 at T3, and that in Kennedy III patients decreased from 8·9 ± 9·6 at T1 to 3·6 ± 8·9 at T2 and 0·8 ± 2·2 at T3. There were no statistically significant differences in the reductions in Kennedy II and III patients. Oral health-related quality of life changed positively in patients treated with implants and an FDP in both groups. There was no change in OHRQoL between the times of implant placement and FDP placement. PMID:26599422

  12. 鞍山地区错牙合畸形患者的 Bolton 指数分析%Bolton Analysis in Different Malocclusion in Anshan Area

    Institute of Scientific and Technical Information of China (English)

    刘启明

    2013-01-01

    Objective :To analyze the frequencies of Bolton index ratios and Bolton tooth size discrepancy frequency in different malocclusions in Anshan .Methods:Bolton indexes were measured and analyzed in ran-domly chosen 150 dental casts of three Angle's malocclusions by the method described by Bolton .Results:Bolton indices of anterior and overall tooth size of Class Ⅲ patients were significiently greater than that of Class Ⅱ .The anterior and overall tooth size discrepancies frequency were 21 .33% and 13 .33% for all the malocclusions ,respectively ,and were no significant differences in anterior or overall tooth size discrepancies frequency among the three Angle's malocclusions in Anshan .Conclusion:Tooth size discrepancy of malocclu-sion patients was not the general cause of malocclusion ,but Bolton's tooth size analysis be performed before initiation of orthodontic treatment in Anshan .%目的:分析鞍山地区错牙合畸形患者的Bolton指数及Bolton指数不调发生率的分布情况。方法:选择150例错牙合畸形患者的记存模型,安氏Ⅰ、Ⅱ、Ⅲ类错颌患者各50例,分别测量上、下颌前牙量和全牙量,计算Bolton指数值并对其分布进行分析。结果:鞍山地区安氏Ⅲ类错牙合畸形患者的前牙及全牙Bolton指数均大于安氏Ⅱ类,具有显著性差异(P<0.05);鞍山地区错牙合畸形患者的前牙比及全牙比不调的发生率分别为21.33%、13.33%,但是不同安氏分类间差异无统计学意义( P>0.05)。结论:鞍山地区错牙合患者的Bolton指数异常不是错牙合畸形发生的主要原因,但在临床制定矫治计划时应予以考虑。

  13. Relationship of physical activity and weight loss in women with Class II and Class III obesity: Mediation of exercise-induced changes in tension and depression

    Directory of Open Access Journals (Sweden)

    James J. Annesi

    2010-01-01

    Full Text Available El ejercicio físico predice tanto la pérdida de peso como la mejora en el estado de ánimo. Debido al gasto energético mínimo relacionado con el ejercicio en personas obesas y a su pobre estado cardiovascular se sugirió que el cambio en el estado de ánimo inducido por el ejercicio puede mediar la relación de éste con la pérdida de peso. En el presente estudio experimental, mujeres con obesidad de Clase II y III (N = 75 participaron en un programa de ejercicio moderado y educación en nutrición durante 24 semanas en centros de la Asociación Cristiana de Jóvenes (YMCA en el sudeste de Estados Unidos. Tal como se esperaba, la participación en las sesiones de ejercicio se relacionó con la pérdida de peso (¿ = -.47, pero, de forma directa, representaron solamente un 17% de la pérdida de peso. Utilizando la aproximación de Baron y Kenny, se encontró una mediación parcial significativa para los cambios en 24 semanas en las puntuaciones de tensión y depresión. Esto sugiere que el ejercicio afectó indirectamente al cambio de peso mediante vías psicológicas y apoyó los principios de la teoría social cognitiva. Después de la replicación, los resultados pueden ayudar a mejorar las teorías explicativas y los tratamientos de control de peso.

  14. Characteristics and prevalence within serogroup O4 of a J96-like clonal group of uropathogenic Escherichia coli O4:H5 containing the class I and class III alleles of papG.

    Science.gov (United States)

    Johnson, J R; Stapleton, A E; Russo, T A; Scheutz, F; Brown, J J; Maslow, J N

    1997-01-01

    The recent discovery of a geographically dispersed clonal group of Escherichia coli O4:H5 that includes prototypic uropathogenic strain J96 prompted us to determine the prevalence of J96-like strains within serogroup O4 and to further assess the characteristics of such strains. We used O:K:H;F serotyping, PCR-based genomic fingerprinting, pulsed-field gel electrophoresis (PFGE), multilocus enzyme electrophoresis (MLEE), and PCR detection of the three papG alleles and of the cytotoxic necrotizing factor 1 (cnf1) and aerobactin (aer) gene sequences to characterize the 15 O4 strains among 336 E. coli isolates from three clinical collections (187 from mixed-source bacteremia, 75 from urosepsis, and 74 from acute cystitis). J96-like strains constituted approximately half of the O4 strains, or 2% of the total population. In contrast to other O4 strains, the J96-like strains characteristically exhibited specific group III capsular antigens, the H5 flagellar and F13 fimbrial antigens, a distinctive PCR genomic fingerprint, the class III papG allele (plus, in 50% of strains, the enigmatic class I papG allele), and cnf1 but lacked aer. A subset of these strains was remarkably homogeneous with respect to all these characteristics and exhibited a distinctive PFGE fingerprint and MLEE pattern. These findings clarify the epidemiological relevance of J96 as a model extraintestinal pathogen, provide further evidence of the class I papG allele outside of strain J96, and offer insights into the evolution of E. coli serogroup O4. PMID:9169745

  15. Malocclusion prevalence and orthodontic treatment need in central Anatolian adolescents compared to European and other nations' adolescents

    Directory of Open Access Journals (Sweden)

    Fundagul Bilgic

    2015-12-01

    Full Text Available Abstract Objective: To determine the prevalence of malocclusion and orthodontic treatment need in a large sample of Central Anatolian adolescents and compare them with European-other nations' adolescents. Methods: The sample included 1125 boys and 1204 girls aged between 12 and 16 years with no previous orthodontic treatment history. Occlusal variables examined were molar relationship, overjet, overbite, crowding, midline diastema, posterior crossbite, and scissors bite. The dental health (DHC and aesthetic components (AC of the Index of Orthodontic Treatment Need (IOTN were used as an assessment measure of the need for orthodontic treatment for the total sample. Results: The results indicated a high prevalence of Class I (34.9% and Class II, Division 1 malocclusions (40.0%. Moreover, increased (18% and reduced bites (14.%, and increased (25.1% and reversed overjet (10.% were present in the sample. Conclusion: Using the DHC of the IOTN, the proportion of subjects estimated to have great and very great treatment need (grades 4 and 5 was 28.%. However, only 16.7% of individuals were in need (grades 8-10 of orthodontic treatment according to the AC.

  16. Effects of lifestyle interventions that include a physical activity component in class II and III obese individuals: a systematic review and meta-analysis.

    Directory of Open Access Journals (Sweden)

    Aurélie Baillot

    Full Text Available In class II and III obese individuals, lifestyle intervention is the first step to achieve weight loss and treat obesity-related comorbidities before considering bariatric surgery. A systematic review, meta-analysis, and meta-regression were performed to assess the impact of lifestyle interventions incorporating a physical activity (PA component on health outcomes of class II and III obese individuals.An electronic search was conducted in 4 databases (Medline, Scopus, CINAHL and Sportdiscus. Two independent investigators selected original studies assessing the impact of lifestyle interventions with PA components on anthropometric parameters, cardiometabolic risk factors (fat mass, blood pressure, lipid and glucose metabolism, behaviour modification (PA and nutritional changes, and quality of life in adults with body mass index (BMI ≥ 35 kg/m2. Estimates were pooled using a random-effect model (DerSimonian and Laird method. Heterogeneity between studies was assessed by the Cochran's chi-square test and quantified through an estimation of the I².Of the 3,170 identified articles, 56 met our eligibility criteria, with a large majority of uncontrolled studies (80%. The meta-analysis based on uncontrolled studies showed significant heterogeneity among all included studies. The pooled mean difference in weight loss was 8.9 kg (95% CI, 10.2-7.7; p < 0.01 and 2.8 kg/m² in BMI loss (95% CI, 3.4-2.2; p < 0.01. Long-term interventions produced superior weight loss (11.3 kg compared to short-term (7.2 kg and intermediate-term (8.0 kg interventions. A significant global effect of lifestyle intervention on fat mass, waist circumference, blood pressure, total cholesterol, LDL-C, triglycerides and fasting insulin was found (p<0.01, without significant effect on HDL-C and fasting blood glucose.Lifestyle interventions incorporating a PA component can improve weight and various cardiometabolic risk factors in class II and III obese individuals. However, further

  17. Malocclusion and deleterious oral habits in a north Indian adolescent population: A correlational study

    Directory of Open Access Journals (Sweden)

    Nidhi Pruthi

    2013-01-01

    Full Text Available Objective: To assess the prevalence of malocclusion and deleterious oral habits among 12 and 15-year-old school children in Shimla city, India and to find, if any correlation exists between the two. Design: Correlational study design. Setting: Twelve schools in Shimla city, India. Materials and Methods: Prevalence of malocclusion and orthodontic treatment need was assessed using the Dental Aesthetic Index (DAI among a sample of 961, 12 and 15-year-old school children in Shimla city, who received no orthodontic treatment before or during the study. Subjects were also assessed for deleterious oral habits. Statistical Analysis: Chi-square and Mann-Whitney U tests were used. Multivariate regression analysis was used to test the correlation of habits with mean DAI score and malocclusion traits. Results: Mean DAI score was 26.81±5.25. Nearly 53% of the study sample presented with malocclusion, ranging from ′definite′ to ′handicapping′ based on the DAI scores. The prevalence of various deleterious oral habits was 25.9%. About 29% of children with any oral habit developed malocclusion as compared to those without any habit (P value=0.023. Tongue thrusting, mouth breathing and thumb sucking habits had a significant impact on malocclusion. Conclusion: There was high prevalence of malocclusion (52.7%. Abnormal oral habits, particularly mouth breathing and tongue thrusting had a significant impact on malocclusion, resulting in higher frequency of crowding in anterior teeth, open bite, and spacing.

  18. Study on Tensile Fatigue Behavior of Thermal Butt Fusion in Safety Class III High-Density Polyethylene Buried Piping in Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jong Sung; Lee, Young Ju [Sunchon National University, Suncheon (Korea, Republic of); Oh, Young Jin [KEPCO E and C, Yongin (Korea, Republic of)

    2015-01-15

    High-density polyethylene (HDPE) piping, which has recently been applied to safety class III piping in nuclear power plants, can be butt-joined through the thermal fusion process, which heats two fused surfaces and then subject to axial pressure. The thermal fusion process generates bead shapes on the butt fusion. The stress concentrations caused by the bead shapes may reduce the fatigue lifetime. Thus, investigating the effect of the thermal butt fusion beads on fatigue behavior is necessary. This study examined the fatigue behavior of thermal butt fusion via a tensile fatigue test under stress-controlled conditions using finite element elastic stress analysis. Based on the results, the presence of thermal butt fusion beads was confirmed to reduce the fatigue lifetime in the low-cycle fatigue region while having a negligible effect in the medium- and high-cycle fatigue regions.

  19. Frontal soft tissue analysis using a 3 dimensional camera following two-jaw rotational orthognathic surgery in skeletal class III patients.

    Science.gov (United States)

    Choi, Jong Woo; Lee, Jang Yeol; Oh, Tae-Suk; Kwon, Soon Man; Yang, Sung Joon; Koh, Kyung Suk

    2014-04-01

    Although two dimensional cephalometry is the standard method for analyzing the results of orthognathic surgery, it has potential limits in frontal soft tissue analysis. We have utilized a 3 dimensional camera to examine changes in soft tissue landmarks in patients with skeletal class III dentofacial deformity who underwent two-jaw rotational setback surgery. We assessed 25 consecutive Asian patients (mean age, 22 years; range, 17-32 years) with skeletal class III dentofacial deformities who underwent two-jaw rotational surgery without maxillary advancement. Using a 3D camera, we analyzed changes in facial proportions, including vertical and horizontal dimensions, facial surface areas, nose profile, lip contour, and soft tissue cheek convexity, as well as landmarks related to facial symmetry. The average mandibular setback was 10.7 mm (range: 5-17 mm). The average SNA changed from 77.4° to 77.8°, the average SNB from 89.2° to 81.1°, and the average occlusal plane from 8.7° to 11.4°. The mid third vertical dimension changed from 58.8 mm to 57.8 mm (p = 0.059), and the lower third vertical dimension changed from 70.4 mm to 68.2 mm (p = 0.0006). The average bigonial width decreased from 113.5 mm to 109.2 mm (p = 0.0028), the alar width increased from 34.7 mm to 36.1 mm (p-value = 0.0002), and lip length was unchanged. Mean mid and lower facial surface areas decreased significantly, from 171.8 cm(2) to 166.2 cm(2) (p = 0.026) and from 71.23 cm(2) to 61.9 cm(2) (p orthognathic surgery, and enabled quantitative analysis of changes in frontal soft tissue landmarks and facial proportions that were not possible with conventional 2D cephalometric analysis.

  20. BtcA, A class IA type III chaperone, interacts with the BteA N-terminal domain through a globular/non-globular mechanism.

    Directory of Open Access Journals (Sweden)

    Chen Guttman

    Full Text Available Bordetella pertussis, the etiological agent of "whooping cough" disease, utilizes the type III secretion system (T3SS to deliver a 69 kDa cytotoxic effector protein, BteA, directly into the host cells. As with other T3SS effectors, prior to its secretion BteA binds BtcA, a 13.9 kDa protein predicted to act as a T3SS class IA chaperone. While this interaction had been characterized for such effector-chaperone pairs in other pathogens, it has yet to be fully investigated in Bordetella. Here we provide the first biochemical proof that BtcA is indeed a class IA chaperone, responsible for the binding of BteA's N-terminal domain. We bring forth extensive evidence that BtcA binds its substrate effector through a dual-interface binding mechanism comprising of non-globular and bi-globular interactions at a moderate micromolar level binding affinity. We demonstrate that the non-globular interactions involve the first 31 N-terminal residues of BteA287 and their removal leads to destabilization of the effector-chaperone complex and lower binding affinities to BtcA. These findings represent an important first step towards a molecular understanding of BteA secretion and cell entry.

  1. Crescimento da base craniana nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III: parte 1 Cranial base growth in different facial types in Class I, II and III orthopedic maxillomandibular relationship: part 1

    OpenAIRE

    Lucelma Vilela Pieri; Kurt Faltin Junior; Cristina Lúcia Feijó Ortolani; Rolf Marçon Faltin; Márcia Aparecida Alves de Almeida

    2007-01-01

    OBJETIVO: este estudo retrospectivo avaliou o crescimento médio anual da base craniana nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III. METODOLOGIA: uma amostra aleatória de 300 pacientes brasileiros leucodermas (131 do gênero masculino, 169 do gênero feminino), com idade média inicial de 10 anos e 2 meses (dentadura mista) e final de 14 anos e 8 meses (segundos molares em oclusão) e tempo médio de observação de 4 anos e 5 meses, foi selec...

  2. Crescimento da base craniana nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III: parte 3 (Crescimento médio de CF-Po) Cranial base growth in different facial types in Class I, II and III orthopedic maxillomandibular relationship: part 3 (Mean growth of CF-Po)

    OpenAIRE

    Lucelma Vilela Pieri; Kurt Faltin Junior; Cristina Lúcia Feijó Ortolani; Rolf Marçon Faltin; Márcia Aparecida Alves de Almeida

    2007-01-01

    OBJETIVO: este estudo retrospectivo avaliou o crescimento médio de CF-Po nos diferentes tipos faciais nos relacionamentos maxilomandibulares ortopédicos de Classe I, II e III. METODOLOGIA: uma amostra aleatória de 300 pacientes brasileiros leucodermas (131 do gênero masculino, 169 do gênero feminino), com idade média inicial de 10 anos e 2 meses (dentadura mista) e final de 14 anos e 8 meses (segundos molares em oclusão) e tempo médio de observação de 4 anos e 5 meses, foi selecionada em uma ...

  3. [Relationship between malocclusion and TMJ dysfunction. Literature review].

    Science.gov (United States)

    Gonzalez Sequeros, O; Royo-Villanova Perez, M L

    1991-01-01

    The purpose of this paper is to discuss some current concepts of maloclusion and TMJ Syndrome by reviewing the most significative literature. This analysis the great differences between well-knowing authors about very important subjects in occlusion, as the condylar position in centric relation and in TMJ Syndrome, or what kind of malocclusion (morphologic and functional, skeletal or dental) was the cause of TMJ Syndrome. The theory of emotional stress would be useful to explain some of the discrepancies, by reducing the occlusal disharmony to predisposal factors depending on the personal adaptation to stress. PMID:1867734

  4. Esthetic orthodontic treatment using the invisalign appliance for moderate to complex malocclusions.

    Science.gov (United States)

    Boyd, Robert L

    2008-08-01

    In this report, three patients were treated with a new treatment protocol for Invisalign to demonstrate that a variety of complex malocclusions can be successfully treated using this protocol, including correction of moderate crowding, correction of moderate Class II division 1, and deep overbite. Previous studies of Invisalign showed significant limitations for more complex orthodontic treatment, although a few recent case reports have shown successfully completed moderate to difficult orthodontic malocclusions. One reason for the discrepancy is that the earlier studies were done during the first four years of the appliance development (now ten years of clinical use), when significant problems existed with accomplishing bodily movement, torquing of roots, extrusions, and rotations of premolars and canines. The new protocol included new methods for anterior/posterior corrections, showing on the computer the effect of elastics for Class II treatment simulated as a one-stage anterior/posterior movement at the end of treatment. Staging for interproximal reduction (IPR) is now automatically staged when there is better access to interproximal contacts to avoid IPR where significant overlap between teeth is present to avoid performing IPR on surfaces that may be damaged by instruments such as burs, strips, and disks when cut on a sharp angle. Staging for tooth movements is now also done to enable combination movements to occur simultaneously for each tooth with the tooth that needs to move the most (the lead tooth) determining the minimum number of stages required. All other teeth move at a slower rate than the lead tooth throughout the duration of treatment. Attachments are now placed in the middle of the crown automatically for rotation and automatically sized in proportion to the clinical crown. Use of 1 mm thick (buccal-lingual dimension) horizontal beveled rectangular attachments is standard on premolars for retention of aligners during intrusive movements, such as

  5. Severity of malocclusion in adolescents: populational-based study in the north of Minas Gerais, Brazil

    Directory of Open Access Journals (Sweden)

    Marise Fagundes Silveira

    2016-01-01

    Full Text Available ABSTRACT OBJECTIVE To identify the factors associated with severity of malocclusion in a population of adolescents. METHODS In this cross-sectional population-based study, the sample size (n = 761 was calculated considering a prevalence of malocclusion of 50.0%, with a 95% confidence level and a 5.0% precision level. The study adopted correction for the effect of delineation (deff = 2, and a 20.0% increase to offset losses and refusals. Multistage probability cluster sampling was adopted. Trained and calibrated professionals performed the intraoral examinations and interviews in households. The dependent variable (severity of malocclusion was assessed using the Dental Aesthetic Index (DAI. The independent variables were grouped into five blocks: demographic characteristics, socioeconomic condition, use of dental services, health-related behavior and oral health subjective conditions. The ordinal logistic regression model was used to identify the factors associated with severity of malocclusion. RESULTS We interviewed and examined 736 adolescents (91.5% response rate, 69.9% of whom showed no abnormalities or slight malocclusion. Defined malocclusion was observed in 17.8% of the adolescents, being severe or very severe in 12.6%, with pressing or essential need of orthodontic treatment. The probabilities of greater severity of malocclusion were higher among adolescents who self-reported as black, indigenous, pardo or yellow, with lower per capita income, having harmful oral habits, negative perception of their appearance and perception of social relationship affected by oral health. CONCLUSIONS Severe or very severe malocclusion was more prevalent among socially disadvantaged adolescents, with reported harmful habits and perception of compromised esthetics and social relationships. Given that malocclusion can interfere with the self-esteem of adolescents, it is essential to improve public policy for the inclusion of orthodontic treatment among

  6. Severity of malocclusion in adolescents: populational-based study in the north of Minas Gerais, Brazil

    Science.gov (United States)

    Silveira, Marise Fagundes; Freire, Rafael Silveira; Nepomuceno, Marcela Oliveira; Martins, Andrea Maria Eleutério de Barros Lima; Marcopito, Luiz Francisco

    2016-01-01

    ABSTRACT OBJECTIVE To identify the factors associated with severity of malocclusion in a population of adolescents. METHODS In this cross-sectional population-based study, the sample size (n = 761) was calculated considering a prevalence of malocclusion of 50.0%, with a 95% confidence level and a 5.0% precision level. The study adopted correction for the effect of delineation (deff = 2), and a 20.0% increase to offset losses and refusals. Multistage probability cluster sampling was adopted. Trained and calibrated professionals performed the intraoral examinations and interviews in households. The dependent variable (severity of malocclusion) was assessed using the Dental Aesthetic Index (DAI). The independent variables were grouped into five blocks: demographic characteristics, socioeconomic condition, use of dental services, health-related behavior and oral health subjective conditions. The ordinal logistic regression model was used to identify the factors associated with severity of malocclusion. RESULTS We interviewed and examined 736 adolescents (91.5% response rate), 69.9% of whom showed no abnormalities or slight malocclusion. Defined malocclusion was observed in 17.8% of the adolescents, being severe or very severe in 12.6%, with pressing or essential need of orthodontic treatment. The probabilities of greater severity of malocclusion were higher among adolescents who self-reported as black, indigenous, pardo or yellow, with lower per capita income, having harmful oral habits, negative perception of their appearance and perception of social relationship affected by oral health. CONCLUSIONS Severe or very severe malocclusion was more prevalent among socially disadvantaged adolescents, with reported harmful habits and perception of compromised esthetics and social relationships. Given that malocclusion can interfere with the self-esteem of adolescents, it is essential to improve public policy for the inclusion of orthodontic treatment among health care

  7. A method for establishing class III medical device equivalence: sodium hyaluronate (GenVisc 850 for the treatment of knee osteoarthritis

    Directory of Open Access Journals (Sweden)

    Doros G

    2016-07-01

    Full Text Available Gheorghe Doros,1 Philip T Lavin,2 Michael Daley,3 Larry E Miller4 1School of Public Health, Boston University, Boston, 2Lavin Consulting LLC, Framingham, MA, 3OrthogenRx Inc., Doylestown, PA, 4Miller Scientific Consulting, Inc., Asheville, NC, USA Abstract: Although the concept of equivalence for drugs (generics and biologics (biosimilars has been readily adopted, the concept of equivalence or indistinguishable characteristics for class III medical devices has yet to be specifically addressed regarding a defined regulatory approval process in the US. In September 2015, GenVisc 850® (sodium hyaluronate, a hyaluronic acid approved for the treatment of knee osteoarthritis, was approved by the US Food and Drug Administration (FDA based upon indistinguishable characteristics in comparison to an approved branded hyaluronic acid (Supartz®/Supartz FX™. The purpose of this paper is to review the methodology and report the main outcomes used to demonstrate clinical comparability of GenVisc 850 with Supartz/Supartz FX. The FDA approval was collectively attained using prospectively defined methods for preclinical, physical, and chemical testing, as well as noninferiority in clinical performance comparisons. Evidence from five randomized controlled studies of Supartz/Supartz FX vs saline control injections (used for Supartz approval, two randomized controlled trials of GenVisc 850 vs saline control injections, and one randomized controlled study of GenVisc 850 vs Supartz/Supartz FX provided evidence of safety for GenVisc 850. Efficacy was further assessed based on assessment of the same Supartz studies and three prospectively identified GenVisc 850 studies. A Bayesian network meta-analysis was used to demonstrate that the clinical efficacy of GenVisc 850 was noninferior to Supartz/Supartz FX and superior to saline control. Overall, safety of GenVisc 850 was similar to that of Supartz/Supartz FX and saline control injections, while efficacy of GenVisc 850

  8. Treatment of Bignathic Malocclusions With Multistage Active Force Orthodontic Movements in a Cat.

    Science.gov (United States)

    Lothamer, Chad W; Soukup, Jason W

    2016-03-01

    Abstract Untreated malocclusions may lead to negative oral health sequelae including, but not limited to, pain, dental trauma, periodontal disease, and endodontic disease. Thus, orthodontic treatments of malocclusion in companion animals are often pursued for reasons other than cosmesis. Treatment may provide a pain-free, functional occlusion with the opportunity for the best possible long-term oral health. This report describes the multistage orthodontic treatment of a bignathic malocclusion in a cat, highlighting the complexities and complications that may arise with orthodontic movement of multiple teeth. PMID:27487651

  9. Sirtuin and pan-class I/II deacetylase (DAC) inhibition is synergistic in preclinical models and clinical studies of lymphoma.

    Science.gov (United States)

    Amengual, Jennifer E; Clark-Garvey, Sean; Kalac, Matko; Scotto, Luigi; Marchi, Enrica; Neylon, Ellen; Johannet, Paul; Wei, Ying; Zain, Jasmine; O'Connor, Owen A

    2013-09-19

    Understanding the molecular pathogenesis of lymphoma has led to paradigm-changing treatment opportunities. One example involves tailoring specific agents based on the cell of origin in aggressive lymphomas. Germinal center (GC)-derived diffuse large B-cell lymphoma (DLBCL) is known to be driven by an addiction to Bcl6, whereas the activated B-cell (ABC) subtype is driven by nuclear factor κB. In the GC subtype, there is a critical inverse relationship between Bcl6 and p53, the functional status of which is linked to each transcription factor's degree of acetylation. Deacetylation of Bcl6 is required for its transcriptional repressor effects allowing for the oncogene to drive lymphomagenesis. Conversely, acetylation of p53 is activating when class III deacetylases (DACs), or sirtuins, are inhibited by niacinamide. Treatment of DLBCL cell lines with pan-DAC inhibitors in combination with niacinamide produces synergistic cytotoxicity in GC over ABC subtypes. This correlated with acetylation of both Bcl6 and p53. This combination also produced remissions in a spontaneous aggressive B-cell lymphoma mouse model expressing Bcl6. In a phase 1 proof-of-principle clinical trial, 24% of patients with relapsed or refractory lymphoma attained a response to vorinostat and niacinamide, and 57% experienced disease stabilization. We report herein on the preclinical and clinical activity of this targeted strategy in aggressive lymphomas. This trial was registered at www.clinicaltrials.gov as #NCT00691210.

  10. The Composition of Metals Bound to Class III Metallothionein (Phytochelatin and Its Desglycyl Peptide) Induced by Various Metals in Root Cultures of Rubia tinctorum.

    Science.gov (United States)

    Maitani, T.; Kubota, H.; Sato, K.; Yamada, T.

    1996-04-01

    The induction of phytochelatins (PCs) and their desglycyl peptides (both are referred to as class III metallothionein [CIIIMT]) by exposure to various metals (Ag+, As3+, As5+, Cd2+, Cu2+, Ga3+, Hg2+, In3+, Ni2+, Pb2+, Pd2+, Se4+, and Zn2+) and the metal composition in the CIIIMTs were investigated in root cultures of Rubia tinctorum L. All of these metal species induced PCs to various degrees when analyzed by the postcolumn derivatization high-performance liquid chromatography method. The desglycyl peptides of PCs often were also present. However, only Ag, Cd, and Cu were bound to the CIIIMTs that they induced when analyzed by the high-performance liquid chromatography-inductively coupled plasma-atomic emission spectrometry method. Cu was also bound to the CIIIMTs induced by Ag+, As3+, and Cd2+. After Ag+ exposure, an Fe peak that may be of Fe-CIIIMT was also observed. However, most of the metal species studied were not bound to the CIIIMTs that they induced. PMID:12226248

  11. 乌鲁木齐地区错(牙合)畸形患者Bolton指数分析%Analysis on Bolton index of patients with malocclusion in Urumqi

    Institute of Scientific and Technical Information of China (English)

    庾英姿; 米丛波; 祖青

    2011-01-01

    目的 通过对乌鲁木齐地区各类错(牙合)畸形患者Bolton指数分析,了解其地区分布特点.方法 选取错(牙合)畸形患者初诊模型180副,按照安氏分类分为三组,测量模型、计算各组Bolton指数前牙比、全牙比及牙量不调率,并进行统计学分析.结果 前牙及全牙Bolton指数性别间差异无统计学意义;各错牙合组前牙及全牙比差异无统计学意义;以超出中国人Bolton指数平均值2倍标准差范围为牙量不调,各错(牙合)组牙量不调率差异无统计学意义.结论 牙量不调普遍存在于各类错(牙合)畸形患者中,Bolton分析应成为正畸诊断和确定治疗计划的依据之一.%Objective To investigate Bolton index of patients with malocclusion in Urumqi,and to acquaint its distribution.Methods The samples were derived from 180 pairs of cast of patients with malocclusion before orthodontic treatment.According to Angles classification of malocclusion,the subject was divided into three groups.Anterior,overall ratios and the frequencies of tooth size discrepancies were calculated,then statistic analysises were done.Results For the mean anterior or overall tooth size ratios,no statistically significant differences was found between the genders or among the malocclusion classes, No significant differences were found between the distributions of subjects with clinically significant tooth size discrepancies, categorized by more than two standard deviations from the Chinese's Bolton means among the malocclusion groups.Conclusion Tooth sizediscrepancies are common in orthodontic populations,Bolton analysis is one of the factors during orthodontic diagnosis and treatment.

  12. A comparison of soft tissues changes in patients with skeletal classⅢ malocclusion after orthodontic and surgical treatments%正畸-正颌治疗骨性Ⅲ类错牙合畸形对软组织稳定性的影响探究

    Institute of Scientific and Technical Information of China (English)

    董欣; 王宏伟; 孟卫东; 苑玉良; 李巧磊; 陈志岭

    2015-01-01

    目的:探讨正畸正颌联合治疗骨性Ⅲ类错牙合畸形对软组织的影响。方法:收集2012年1月至2014年1月来我院就诊的骨性Ⅲ类错牙合畸形患者68例,均给予正畸治疗和正颌外科手术,通过X线头颅定位侧位片检测患者矫正前、治疗后3个月、治疗后1年软组织变化。结果:治疗后3月与矫正前比较,除上下唇角外其余项目均有明显或显著的统计学意义(P0.05)。结论:正畸正颌联合治疗骨性Ⅲ类错牙合畸形在术后3个月内具有显著疗效,治疗后1年存在轻微复发,但对手术效果无本质影响。%Objective: Investigate the effect of orthodontic treatment combined with orthognathic surgery operation in treatment of skeletal class III malocclusion deformity on bone and sotf tissue in patients.Methods: Collected 68 cases of patients accepted treatment in our hospital from January 2012 to January 2014 were given orthodontic treatment and orthognathic surgery operation. hTrough the X-ray cephalometric detected changes of skeletal and sotf tissue before treatment, 3 months and 1 year atfer operation.Results:Compared with the prior correction, in addition to the angle of up and under lip other projects changed obviously 3 months atfer operation (P0.05). Conclusion: Orthodontic treatment combined with orthognathic surgery operation in treatment of skeletal class III malocclusion deformity havesigniifcant curative effect atfer 3 months atfer operation, and there is a slight relapse one year atfer the operation, but no essential inlfuence on the operation effect.

  13. Prevalence of malocclusion traits and orthodontic treatment in a Finnish adult population.

    Science.gov (United States)

    Krooks, Laura; Pirttiniemi, Pertti; Kanavakis, Georgios; Lähdesmäki, Raija

    2016-07-01

    Objective The aim of the study was to examine the prevalence of malocclusion traits and the extent of orthodontic treatment in a Finnish adult population. Materials and methods The study population comprised subjects (n = 1964) from the Northern Finland Birth Cohort 1966 living in the city of Oulu and within 100 km of it. A clinical oral and dental examination with registration of occlusion was carried out in 2012 in connection with a 46-year follow-up survey. Data on previous orthodontic treatment were collected based on a questionnaire. Results In the clinical examination, 39.5% of the subjects had at least one malocclusion trait. The most common malocclusion traits were lateral crossbite (17.9%), overbite ≥ 6 mm (11.7%) and overjet ≥ 6 mm (9.7%). Crossbite on the left premolars, negative overjet and increased overbite were found more frequently in men. The prevalence of malocclusion traits was at the same level in treated and untreated groups. Overall, 18.6% of the subjects had undergone orthodontic treatment. Women showed a significantly higher prevalence of orthodontic treatment. Conclusions The most common malocclusion trait in the present study was lateral crossbite. Significant male dominance in the prevalence of malocclusion was observed, which has not been reported earlier in Finland. Orthodontic treatment of malocclusion traits was more common among females in Northern Finland. This study indicates that orthodontic treatment provided in childhood was, on average, adequate in reducing malocclusion traits to the level observed in the general population. PMID:26940248

  14. Resting position of the head and malocclusion in a group of patients with cerebral palsy

    OpenAIRE

    Martinez-Mihi, Victoria; Silvestre, Francisco J.; Orellana, Lorena M.; Silvestre-Rangil, Javier

    2014-01-01

    Cerebral palsy are found as a result of these disorders, along with associated neuromuscular functional alterations that affect the resting position of the head. In this context, the resting position of the head could be responsible for several skeletal and dental occlusal disorders among patients with cerebral palsy. Objective: To assess the presence of malocclusions in patients with cerebral palsy, define the most frequent types of malocclusions, and evaluate how the resting position of the...

  15. Resting position of the head and malocclusion in a group of patients with cerebral palsyn

    OpenAIRE

    Martínez Mihi, Victoria; Silvestre Donat, Francisco Javier; Orellana, Lorena Mirtala; Silvestre Rangil, Javier

    2014-01-01

    Cerebral palsy are found as a result of these disorders, along with associated neuromuscular functional alterations that affect the resting position of the head. In this context, the resting position of the head could be responsible for several skeletal and dental occlusal disorders among patients with cerebral palsy. Objective: To assess the presence of malocclusions in patients with cerebral palsy, define the most frequent types of malocclusions, and evaluate how the resting pos...

  16. Skeletal Malocclusion: A Developmental Disorder With a Life-Long Morbidity

    OpenAIRE

    Joshi, Nishitha; Hamdan, Ahmad M.; Fakhouri, Walid D.

    2014-01-01

    The likelihood of birth defects in orofacial tissues is high due to the structural and developmental complexity of the face and the susceptibility to intrinsic and extrinsic perturbations. Skeletal malocclusion is caused by the distortion of the proper mandibular and/or maxillary growth during fetal development. Patients with skeletal malocclusion may suffer from dental deformities, bruxism, teeth crowding, trismus, mastication difficulties, breathing obstruction and digestion disturbance if ...

  17. Malocclusion and TMJ disorders in teenagers from private and public schools in Mexico City

    OpenAIRE

    Sánchez Pérez, Leonor; Irigoyen Camacho, María Esther; Molina Frechero, Nelly; Mendoza Roaf, Patricia Lorelei; Medina Solís, Carlo Eduardo; Acosta Gío, Enrique; Maupomé, Gerardo

    2013-01-01

    Objective: To identify, among Mexican teenagers from public and private schools, the frequency, severity of malocclusion and orthodontic treatment needs, and their possible association with temporomandibular joint disorders. Material and Methods: Fifteen-year-old students were recruited from public and private schools. Clinical findings were registered as follows: oral hygiene status with the Oral Hygiene Index-Simplified, malocclusion using the Dental Aesthetic Index (DAI), and TMJ disorders...

  18. Malocclusion in Elementary School Children in Beirut: Severity and Related Social/Behavioral Factors

    OpenAIRE

    Antoine Hanna; Monique Chaaya; Celine Moukarzel; Khalil El Asmar; Miran Jaffa; Ghafari, Joseph G.

    2015-01-01

    Aim. To assess severity of malocclusion in Lebanese elementary school children and the relationship between components of malocclusion and sociodemographic and behavioral factors. Methods. Dental screening was performed on 655 school children aged 6–11 from 2 public (PB) and 5 private (PV) schools in Beirut. A calibrated examiner recorded occlusion, overjet, overbite, posterior crossbite, midline diastema, and crowding. Another examiner determined the DMFT (Decayed/Missing/Filled Teeth) score...

  19. The influence of asthma onset and severity on malocclusion prevalence in children and adolescents

    OpenAIRE

    Luiz Sekio Tanaka; Cássia Cilene Dezan; Karen Barros Parron Fernandes; Flaviana Bombarda de Andrade Ferreira; Luiz Reynaldo de Figueiredo Walter; Alcindo Cerci Neto; Silvia Fernandes Chadi

    2012-01-01

    OBJECTIVE: The influence of asthma, its severity levels and onset time on malocclusion occurrence were investigated. METHODS: The sample was composed by 176 children/adolescents, of both genders, aged 3 to 15 years, that were divided in two groups. The asthma group (AG) enrolled 88 children/adolescents that were seen at the Breathe Londrina Program. The asthma-free group (AFG) enrolled 88 preschool and school children recruited in 2 public schools. Malocclusion diagnosis was made according to...

  20. Association between oronasopharyngeal abnormalities and malocclusion in Northeastern Brazilian preschoolers

    Science.gov (United States)

    Gomes, Genara Brum; Vieira-Andrade, Raquel Gonçalves; de Sousa, Raulison Vieira; Firmino, Ramon Targino; Paiva, Saul Martins; Marques, Leandro Silva; Granville-Garcia, Ana Flávia

    2016-01-01

    Abstract Objective: Evidence is contradictory regarding the association between oronasopharyngeal abnormalities and malocclusion. The aim of the present study was to assess the association between oronasopharyngeal abnormalities and malocclusion (anterior open bite and posterior crossbite) in preschoolers. Methods: A cross-sectional study was conducted with a representative sample of 732 preschoolers aged 3-5 years old selected randomly from private and public preschools. Anterior open bite (AOB) and posterior crossbite (PC) were evaluated through a clinical exam. Parents/caregivers answered a questionnaire addressing sociodemographic indicators and oronasopharyngeal issues. Statistical analysis involved descriptive analysis and Poisson regression (p < 0.05). Results: The prevalences of AOB and PC were 21.0% and 11.6%, respectively. Being three years old (PR = 1.244; 95% CI = 1.110-1.394; p < 0.001), being four years old (PR = 1.144; 95% CI = 1.110 - 1.394; p = 0.015), absence of allergy (PR = 1.158; 95% CI = 1.057 - 1.269; p = 0.002), not having undergone nose surgery (PR = 1.152; 95% CI = 1.041 - 1.275; p = 0.006) and having a sore throat more than five times in the same year (PR = 1.118; 95% CI = 1.011 - 1.237; p = 0.030) were significantly associated with AOB. The absence of asthma (PR = 1.082; 95% CI = 1.012 - 1.156; p = 0.020), not having undergone throat surgery (PR = 1.112; 95% CI = 1.068 - 1.158; p < 0.001) and not having undergone nose surgery (PR = 1.114; 95% CI = 1.069 - 1.160; p < 0.001) remained associated with PC. Conclusion: Significant associations were found between oronasopharyngeal-reported abnormalities and the presence of AOB and PC in preschoolers. PMID:27409652

  1. Educational Intervention on Risk Factors Associated with Malocclusions in Five-year-old Children

    Directory of Open Access Journals (Sweden)

    Amarelys Morera Pérez

    2016-04-01

    Full Text Available Background: educational programs aimed at increasing knowledge on oral health and promoting proper oral hygiene habits allow controlling or limiting the development of dento-maxillofacial defects that lead to many aesthetic, functional and mental disorders.Objective: to assess the effectiveness of an educational intervention on risk factors associated with malocclusions in children aged five years. Methods: a quasi-experimental, before and after study was conducted in 67 children living in the Health Area number 2 in Cienfuegos municipality. Risk factors associated with malocclusions were identified, as well as the knowledge needs of the children and their parents. An educational program on risk factors associated with malocclusions was designed and implemented. Surveys were applied before and after the intervention. The variables studied included risk factors associated with malocclusions and the level of knowledge about them. Results: children and parents increased their knowledge about risk factors associated with malocclusions. Ninety four point three percent of the most common oral habits (tongue thrusting, finger-sucking and bottle feeding were eliminated. Conclusion: the intervention was effective since it raised the level of knowledge of the children and their parents and led to the elimination of a considerable number of modifiable risk factors associated with malocclusions.

  2. Exploring the association between feeding habits, non-nutritive sucking habits, and malocclusions in the deciduous dentition

    OpenAIRE

    Lopes-Freire, Gabriela Mesquita; Cárdenas, Abel Belizario Cahuana; Suarez de Deza, José Enrique Espasa; Ustrell-Torrent, Josep Maria; Oliveira, Luciana Butini; Boj Quesada JR, Joan Ramon

    2015-01-01

    Background This study aimed to explore the association between feeding habits, non-nutritive sucking habits, and malocclusions in deciduous dentition. Methods A cross-sectional observational survey was carried out in 275 children aged 3 to 6 years and included clinical evaluations of malocclusions and structured interviews. Statistical significance for the association between feeding habits and the development of malocclusion was determined using chi-square and Fisher’s exact tests. In additi...

  3. Postsurgical Relapse in Class III Patients Treated With Two-Jaw Surgery: Conventional Three-Stage Method Versus Surgery-First Approach.

    Science.gov (United States)

    Park, Heon-Mook; Yang, Il-Hyung; Choi, Jin-Young; Lee, Jong-Ho; Kim, Myung-Jin; Baek, Seung-Hak

    2015-11-01

    The aim of this study was to investigate the pattern, amount, and distribution of postsurgical relapse in skeletal Class III patients treated with two-jaw surgery (TJS) using conventional three-stage method (CTM) and surgery-first approach (SFA). A total of 38 patients who underwent the nonextraction approach and TJS (LeFort I posterior impaction and mandibular setback) were divided into CTM and SFA groups (all n = 19/group). Lateral cephalograms were taken before treatment (T0), at 1 month before surgery (T1), immediately after surgery (T2), and at debonding (T3) for CTM patients and at T0, T2, and T3 stages for SFA patients. Cephalometric measurements and statistical analyses were performed. There were no significant differences in the cephalometric variables at all stages except maxillary incisor inclination (U1-UOP) and overbite at T0 between 2 groups. They also did not exhibit significant differences in the amounts of surgical movement except for advancement of the maxilla. The mandible in both groups was rotated slightly clockwise by surgery and counterclockwise during T2-T3 without a significant difference. Distribution of cases with "high relapse" (>30%) and "low relapse" (<30%) of the mandible differed for 2 groups (P < 0.05). SFA group had more "high relapse" cases than CTM group (57.9% versus 26.3%). Postsurgical relapse of the mandible had a positive relationship with the amount of mandibular setback in SFA group (P < 0.01) and clockwise rotation of the proximal segment of the mandible in both groups (P < 0.05 and P < 0.01). The results suggest that SFA might be an effective alternative to CTM if the cause of "high relapse" including amounts of mandibular setback and clockwise rotation of the proximal segment of the mandible during surgery can be controlled.

  4. A method for establishing class III medical device equivalence: sodium hyaluronate (GenVisc 850) for the treatment of knee osteoarthritis.

    Science.gov (United States)

    Doros, Gheorghe; Lavin, Philip T; Daley, Michael; Miller, Larry E

    2016-01-01

    Although the concept of equivalence for drugs (generics) and biologics (biosimilars) has been readily adopted, the concept of equivalence or indistinguishable characteristics for class III medical devices has yet to be specifically addressed regarding a defined regulatory approval process in the US. In September 2015, GenVisc 850® (sodium hyaluronate), a hyaluronic acid approved for the treatment of knee osteoarthritis, was approved by the US Food and Drug Administration (FDA) based upon indistinguishable characteristics in comparison to an approved branded hyaluronic acid (Supartz®/Supartz FX™). The purpose of this paper is to review the methodology and report the main outcomes used to demonstrate clinical comparability of GenVisc 850 with Supartz/Supartz FX. The FDA approval was collectively attained using prospectively defined methods for preclinical, physical, and chemical testing, as well as noninferiority in clinical performance comparisons. Evidence from five randomized controlled studies of Supartz/Supartz FX vs saline control injections (used for Supartz approval), two randomized controlled trials of GenVisc 850 vs saline control injections, and one randomized controlled study of GenVisc 850 vs Supartz/Supartz FX provided evidence of safety for GenVisc 850. Efficacy was further assessed based on assessment of the same Supartz studies and three prospectively identified GenVisc 850 studies. A Bayesian network meta-analysis was used to demonstrate that the clinical efficacy of GenVisc 850 was noninferior to Supartz/Supartz FX and superior to saline control. Overall, safety of GenVisc 850 was similar to that of Supartz/Supartz FX and saline control injections, while efficacy of GenVisc 850 was noninferior to that of Supartz/Supartz FX and superior to saline control injections. PMID:27471412

  5. Functional and structural comparison of pyrrolnitrin- and iprodione-induced modifications in the class III histidine-kinase Bos1 of Botrytis cinerea.

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    Sabine Fillinger

    Full Text Available Dicarboximides and phenylpyrroles are commonly used fungicides against plant pathogenic ascomycetes. Although their effect on fungal osmosensing systems has been shown in many studies, their modes-of-action still remain unclear. Laboratory- or field-mutants of fungi resistant to either or both fungicide categories generally harbour point mutations in the sensor histidine kinase of the osmotic signal transduction cascade.In the present study we compared the mechanisms of resistance to the dicarboximide iprodione and to pyrrolnitrin, a structural analogue of phenylpyrrole fungicides, in Botrytis cinerea. Pyrrolnitrin-induced mutants and iprodione-induced mutants of B. cinerea were produced in vitro. For the pyrrolnitrin-induced mutants, a high level of resistance to pyrrolnitrin was associated with a high level of resistance to iprodione. For the iprodione-induced mutants, the high level of resistance to iprodione generated variable levels of resistance to pyrrolnitrin and phenylpyrroles. All selected mutants showed hypersensitivity to high osmolarity and regardless of their resistance levels to phenylpyrroles, they showed strongly reduced fitness parameters (sporulation, mycelial growth, aggressiveness on plants compared to the parental phenotypes. Most of the mutants presented modifications in the osmosensing class III histidine kinase affecting the HAMP domains. Site directed mutagenesis of the bos1 gene was applied to validate eight of the identified mutations. Structure modelling of the HAMP domains revealed that the replacements of hydrophobic residues within the HAMP domains generally affected their helical structure, probably abolishing signal transduction. Comparing mutant phenotypes to the HAMP structures, our study suggests that mutations perturbing helical structures of HAMP2-4 abolish signal-transduction leading to loss-of-function phenotype. The mutation of residues E529, M427, and T581, without consequences on HAMP structure

  6. Application for a Permit to Operate a Class III Solid Waste Disposal Site at the Nevada Test Site Area 5 Asbestiform Low-Level Solid Waste Disposal Site

    International Nuclear Information System (INIS)

    The NTS solid waste disposal sites must be permitted by the state of Nevada Solid Waste Management Authority (SWMA). The SWMA for the NTS is the Nevada Division of Environmental Protection, Bureau of Federal Facilities (NDEP/BFF). The U.S. Department of Energy's National Nuclear Security Administration Nevada Site Office (NNSA/NSO) as land manager (owner), and National Security Technologies (NSTec), as operator, will store, collect, process, and dispose all solid waste by means that do not create a health hazard, a public nuisance, or cause impairment of the environment. NTS disposal sites will not be included in the Nye County Solid Waste Management Plan. The NTS is located approximately 105 kilometers (km) (65 miles (mi)) northwest of Las Vegas, Nevada (Figure 1). The U.S. Department of Energy (DOE) is the federal lands management authority for the NTS, and NSTec is the Management and Operations contractor. Access on and off the NTS is tightly controlled, restricted, and guarded on a 24-hour basis. The NTS has signs posted along its entire perimeter. NSTec is the operator of all solid waste disposal sites on the NTS. The Area 5 RWMS is the location of the permitted facility for the Solid Waste Disposal Site (SWDS). The Area 5 RWMS is located near the eastern edge of the NTS (Figure 2), approximately 26 km (16 mi) north of Mercury, Nevada. The Area 5 RWMS is used for the disposal of low-level waste (LLW) and mixed low-level waste. Many areas surrounding the RWMS have been used in conducting nuclear tests. A Notice of Intent to operate the disposal site as a Class III site was submitted to the state of Nevada on January 28, 1994, and was acknowledged as being received in a letter to the NNSA/NSO on August 30, 1994. Interim approval to operate a Class III SWDS for regulated asbestiform low-level waste (ALLW) was authorized on August 12, 1996 (in letter from Paul Liebendorfer to Runore Wycoff), with operations to be conducted in accordance with the ''Management Plan

  7. Application for a Permit to Operate a Class III Solid Waste Disposal Site at the Nevada Test Site Area 5 Asbestiform Low-Level Solid Waste Disposal Site

    Energy Technology Data Exchange (ETDEWEB)

    NSTec Environmental Programs

    2010-09-14

    The NTS solid waste disposal sites must be permitted by the state of Nevada Solid Waste Management Authority (SWMA). The SWMA for the NTS is the Nevada Division of Environmental Protection, Bureau of Federal Facilities (NDEP/BFF). The U.S. Department of Energy's National Nuclear Security Administration Nevada Site Office (NNSA/NSO) as land manager (owner), and National Security Technologies (NSTec), as operator, will store, collect, process, and dispose all solid waste by means that do not create a health hazard, a public nuisance, or cause impairment of the environment. NTS disposal sites will not be included in the Nye County Solid Waste Management Plan. The NTS is located approximately 105 kilometers (km) (65 miles [mi]) northwest of Las Vegas, Nevada (Figure 1). The U.S. Department of Energy (DOE) is the federal lands management authority for the NTS, and NSTec is the Management and Operations contractor. Access on and off the NTS is tightly controlled, restricted, and guarded on a 24-hour basis. The NTS has signs posted along its entire perimeter. NSTec is the operator of all solid waste disposal sites on the NTS. The Area 5 RWMS is the location of the permitted facility for the Solid Waste Disposal Site (SWDS). The Area 5 RWMS is located near the eastern edge of the NTS (Figure 2), approximately 26 km (16 mi) north of Mercury, Nevada. The Area 5 RWMS is used for the disposal of low-level waste (LLW) and mixed low-level waste. Many areas surrounding the RWMS have been used in conducting nuclear tests. A Notice of Intent to operate the disposal site as a Class III site was submitted to the state of Nevada on January 28, 1994, and was acknowledged as being received in a letter to the NNSA/NSO on August 30, 1994. Interim approval to operate a Class III SWDS for regulated asbestiform low-level waste (ALLW) was authorized on August 12, 1996 (in letter from Paul Liebendorfer to Runore Wycoff), with operations to be conducted in accordance with the &apos

  8. A New View of Alcohol Metabolism and Alcoholism—Role of the High-Km Class III Alcohol Dehydrogenase (ADH3)

    Science.gov (United States)

    Haseba, Takeshi; Ohno, Youkichi

    2010-01-01

    The conventional view is that alcohol metabolism is carried out by ADH1 (Class I) in the liver. However, it has been suggested that another pathway plays an important role in alcohol metabolism, especially when the level of blood ethanol is high or when drinking is chronic. Over the past three decades, vigorous attempts to identify the enzyme responsible for the non-ADH1 pathway have focused on the microsomal ethanol oxidizing system (MEOS) and catalase, but have failed to clarify their roles in systemic alcohol metabolism. Recently, using ADH3-null mutant mice, we demonstrated that ADH3 (Class III), which has a high Km and is a ubiquitous enzyme of ancient origin, contributes to systemic alcohol metabolism in a dose-dependent manner, thereby diminishing acute alcohol intoxication. Although the activity of ADH3 toward ethanol is usually low in vitro due to its very high Km, the catalytic efficiency (kcat/Km) is markedly enhanced when the solution hydrophobicity of the reaction medium increases. Activation of ADH3 by increasing hydrophobicity should also occur in liver cells; a cytoplasmic solution of mouse liver cells was shown to be much more hydrophobic than a buffer solution when using Nile red as a hydrophobicity probe. When various doses of ethanol are administered to mice, liver ADH3 activity is dynamically regulated through induction or kinetic activation, while ADH1 activity is markedly lower at high doses (3–5 g/kg). These data suggest that ADH3 plays a dynamic role in alcohol metabolism, either collaborating with ADH1 or compensating for the reduced role of ADH1. A complex two-ADH model that ascribes total liver ADH activity to both ADH1 and ADH3 explains the dose-dependent changes in the pharmacokinetic parameters (β, CLT, AUC) of blood ethanol very well, suggesting that alcohol metabolism in mice is primarily governed by these two ADHs. In patients with alcoholic liver disease, liver ADH3 activity increases, while ADH1 activity decreases, as alcohol

  9. Estudo cefalométrico das alterações no perfil facial em pacientes Classe III dolicocefálicos submetidos à cirurgia ortognática bimaxilar Cephalometric study of the facial profile changes in Class III patients submitted to bimaxillary orthognathic surgery

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    Hewerson Santos Tavares

    2005-10-01

    Full Text Available O presente estudo avaliou as modificações no perfil facial de 15 pacientes portadores de má oclusão Classe III esquelética que foram submetidos a tratamento ortodôntico pré-cirúrgico e cirurgia ortognática bimaxilar estabilizada com fixação rígida. Oito pacientes foram submetidos à mentoplastia. Foram utilizadas telerradiografias pré-cirúrgicas (T1 e pós-cirúrgicas (T2 com um intervalo mínimo de 6 meses. Foram analisados deslocamentos horizontais e verticais em pontos do tecido ósseo e tecido mole. Foi realizada uma comparação entre os casos tratados com e sem mentoplastia (teste t mostrando não haver diferenças entre os grupos. A regressão linear múltipla evidenciou uma correlação significante no sentido horizontal para os pontos Pg e Pgm e vertical para os pontos Me e Mem. Foi encontrada baixa correlação para movimentos no sentido horizontal nos pontos Sena e A, e para os pontos Pn, Sn e Ph. No sentido vertical, os deslocamentos mais evidentes foram entre os pontos Pg, Gn e Me e Sena e A, porém com correlações de baixa intensidade.The present study evaluated the facial profile modifications in 15 skeletal Class III patients that were submitted to presurgical orthodontic treatment and orthognathic bimaxillary surgery stabilized with a rigid fixation. Eight of the patients have undergone to genioplastic surgery. Presurgical (T1 and late postsurgical (T2 radiographs taken apart with a minimum of 6 month interval had been used. The horizontal and vertical displacement of skeletal and soft tissue profile points were analyzed. The comparison of the cases submitted or not to a genioplastic surgery (t Test showed no differences for the displacement of the skeletal and soft tissue points. The multiple linear regression analysis showed a significant correlation for horizontal movements of the Pg and Pgm points and for vertical movements of the Me and Mem points. A low correlation was found for the horizontal movements of

  10. Posição habitual de língua e padrão de deglutição em indivíduo com oclusão classe III, pré e pós-cirurgia ortognática Tongue's rest position and deglutition standards in a patient with malocclusion Class III, pre and post orthognathic surgery

    Directory of Open Access Journals (Sweden)

    Cássia Sígolo

    2009-06-01

    Full Text Available TEMA: os distúrbios miofuncionais orofaciais dos indivíduos que apresentam desproporções maxilomandibulares podem estar relacionados à condição muscular orofacial e às diferentes funções por elas realizadas. PROCEDIMENTOS: a paciente realizou um exame radiográfico de videofluoroscopia no qual se observou quantas deglutições foram necessárias para total limpeza das valéculas e qual foi a posição da língua após a deglutição de saliva. O exame foi realizado com bário líquido e pão de queijo. RESULTADOS: na avaliação pré-operatória, foi encontrada a língua posicionada no soalho da cavidade oral; mastigação com movimento compensatório de língua, com amassamento do alimento pela língua, contra o palato; deglutição com projeção anterior de língua, diminuição da elevação de dorso de língua; elevação de palato mole e laringe adequada; diminuição de ejeção oral para líquido e função de clearance faríngeo completa para líquidos e sólidos. No exame pós-operatório, foi observada a posição habitual de língua em soalho da boca; mastigação com movimento compensatório de língua, com amassamento do alimento pela língua, contra o palato; elevação de palato mole e laringe adequada, ejeção oral satisfatória para líquido e função de clearance faríngeo completo para líquidos e sólidos. CONCLUSÃO: foi observado padrão adaptativo funcional em mastigação e deglutição mantido, mesmo após a cirurgia corretiva para a adequação da deformidade dentofacial, apesar da melhora da força de ejeção oral.BACKGROUND: the orofacial myofunctional disorders of individuals that have maxillomandibular disproportions can be related the orofacial muscular condition and the different functions accomplished by them. PROCEDURES: the patient was submitted to a radiographic video-fluoroscopic examination where in which we observed how many swallowing were needed to complete full cleaning of the valecular region and what was the position of the tongue after saliva swallowing. The examination was conducted with liquid Barium and cheese bread. RESULTS: in the pre-surgery evaluation, we found: the tongue's standard rest position is the bottom of the oral cavity; chewing was made with compensatory tongue movement (the food was crushed by the tongue against the palate; deglutition with pre-projection of tongue, decreasing in the back of the tongue elevation; adequate elevation of the soft palate and larynx; strength decreasing of oral ejection for liquid; and complete clearance pharyngeal function for liquids and solids. In the post-operative evaluation, we observed the frequent position of the tongue in the bottom of the mouth; chewing with tongue compensatory movement, (the food was smashed by the tongue against the palate; adequate elevation of the soft palate and larynx, satisfactory strength of oral ejection; and complete pharyngeal clearance function for liquids and solids. CONCLUSION: even after corrective dent facial surgery the adaptive functional standard was consistent in chewing and swallowing, despite of the improvement in the oral ejection power.

  11. Malocclusion in Elementary School Children in Beirut: Severity and Related Social/Behavioral Factors

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    Antoine Hanna

    2015-01-01

    Full Text Available Aim. To assess severity of malocclusion in Lebanese elementary school children and the relationship between components of malocclusion and sociodemographic and behavioral factors. Methods. Dental screening was performed on 655 school children aged 6–11 from 2 public (PB and 5 private (PV schools in Beirut. A calibrated examiner recorded occlusion, overjet, overbite, posterior crossbite, midline diastema, and crowding. Another examiner determined the DMFT (Decayed/Missing/Filled Teeth score. A questionnaire filled by the parents provided data on sociodemographic and behavioral factors. Multinomial, binomial, and multiple linear regressions tested the association of these factors with occlusal indices. Results. Malocclusion was more severe in PB students. Age and sucking habit were associated with various components of malocclusion. Crowding was more prevalent among males and significantly associated with the DMFT score. Income and educational level were significantly higher (P<0.05 in PV pupils and deleterious habits were more frequent in PB children. Conclusions. Children of lower socioeconomic background had more severe malocclusions and poorer general dental health. Compared to Western and WHO norms, the findings prompt health policy suggestions to improve dental care of particularly public school children through regular screenings in schools, prevention methods when applicable, and cost effective practices through public and private enabling agencies.

  12. Individual and contextual determinants of malocclusion in 12-year-old schoolchildren in a Brazilian city

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    Lidia Moraes Ribeiro JORDÃO

    2015-01-01

    Full Text Available The aim of this study was to describe malocclusion prevalence and its association with individual and contextual factors among Brazilian 12-year-old schoolchildren. This cross-sectional study included data from an oral health survey carried out in Goiânia, Brazil (n = 2,075, and data from the files of the local health authority. The data were collected through oral clinical examinations. The Dental Aesthetic Index (DAI was used to assess occlusion. The presence of malocclusion (DAI > 25 was used as the dependent variable. The individual independent variables consisted of adolescents’ sex and race and their mothers’ level of schooling. The clinical variables were caries experience and presence of adverse periodontal condition (calculus and/or gingival bleeding. The contextual variables included type of school and the location of schools in the city’s health districts. The Rao-Scott test and multilevel logistic regression were performed. The prevalence of malocclusion was 40.1%. In the final model, significantly higher rates of malocclusion were found among those who attended schools located in less affluent health districts and whose mothers had fewer years of education. Rates were also higher among those presenting calculus and/or gingival bleeding. Malocclusion demonstrated a high prevalence rate and the inequalities in its distribution were determined by individual and contextual factors.

  13. Frequency of rhinitis and orofacial disorders in patients with dental malocclusion

    Science.gov (United States)

    Imbaud, Tamara Christine de Souza; Mallozi, Márcia Carvalho; Domingos, Vanda Beatriz Teixeira Coelho; Solé, Dirceu

    2016-01-01

    Abstract Objective: To describe the frequency and etiology of rhinitis, oral breathing, types of malocclusion and orofacial disorders in patients treated for dental malocclusion. Methods: Patients with poor dental occlusion (n=89, 8-15 years) undergoing orthodontic treatment at the Postgraduate Orthodontics Center (São Paulo, Brazil) participated in the study. Rhinitis and oral breathing were diagnosed by anamnesis, clinical assessment and allergic etiology of rhinitis through immediate hypersensitivity skin prick test with airborne allergens. The association between types of breathing (oral or nasal), rhinitis and types of dental malocclusion, bruxism and cephalometric alterations (increased Y axis of facial growth) compared to standard cephalometric tracing (Escola de Odontologia da Universidade de São Paulo) were assessed. Results: The frequency of rhinitis in patients with dental malocclusion was 76.4% (68), and, of these, 81.7% were allergic (49/60 positive skin prick test), whereas the frequency of oral breathing was 62.9%. There was a significant association between an increased Y axis of facial growth and oral breathing (pbruxism. Conclusions: The frequency of rhinitis in children with dental malocclusion is higher than that in the general population, which is approximately 30%. Patients with oral breathing have a tendency to a dolichofacial growth pattern (increased Y axis of facial growth). In patients with rhinitis, regardless of the presence of oral breathing, the dolichofacial growth tendency was not observed. PMID:26631324

  14. Malocclusion and deleterious oral habits among adolescents in a developing area in northeastern Brazil.

    Science.gov (United States)

    Thomaz, Erika Bárbara Abreu Fonseca; Cangussu, Maria Cristina Teixeira; Assis, Ana Marlúcia Oliveira

    2013-01-01

    Although malocclusions represent a serious public health issue, there is insufficient information about this problem in adolescents in Brazil, especially in poorer areas. The purpose of this cross-sectional study was to estimate the prevalence of facial alterations, dental malocclusions, and deleterious oral habits (DOH) among adolescents in a developing area in northeastern Brazil and to test the hypothesis that the occurrence of DOH in infancy is associated with DOH during adolescence. The study included a probabilistic population-based sample of 2,060 Brazilian students aged 12-15 years. Facial characteristics (type of facial profile, facial symmetry, and passive lip sealing) and malocclusions (Angle and Dental Aesthetic Index, DAI) were evaluated. DOH in infancy and adolescence were evaluated by interviews with the parents and adolescents. Most adolescents presented with normal facial characteristics. The malocclusion prevalence (Angle) was 83%. The DAI ranged from 13 to 69 (mean ± SD: 25.9 ± 7.7). Orthodontic treatment was necessary in 45.1% of the sample. The most prevalent DOH in adolescents were nail biting, object biting, cheek/lip biting, and bruxism, which were associated with finger sucking during infancy (P < 0.05). We conclude that malocclusions and DOH are common among Brazilian adolescents and that finger sucking during infancy may be a good predictor of DOH occurrence during adolescence.

  15. Malocclusion and deleterious oral habits among adolescents in a developing area in northeastern Brazil

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    Erika Bárbara Abreu Fonseca Thomaz

    2013-02-01

    Full Text Available Although malocclusions represent a serious public health issue, there is insufficient information about this problem in adolescents in Brazil, especially in poorer areas. The purpose of this cross-sectional study was to estimate the prevalence of facial alterations, dental malocclusions, and deleterious oral habits (DOH among adolescents in a developing area in northeastern Brazil and to test the hypothesis that the occurrence of DOH in infancy is associated with DOH during adolescence. The study included a probabilistic population-based sample of 2,060 Brazilian students aged 12-15 years. Facial characteristics (type of facial profile, facial symmetry, and passive lip sealing and malocclusions (Angle and Dental Aesthetic Index, DAI were evaluated. DOH in infancy and adolescence were evaluated by interviews with the parents and adolescents. Most adolescents presented with normal facial characteristics. The malocclusion prevalence (Angle was 83%. The DAI ranged from 13 to 69 (mean ± SD: 25.9 ± 7.7. Orthodontic treatment was necessary in 45.1% of the sample. The most prevalent DOH in adolescents were nail biting, object biting, cheek/lip biting, and bruxism, which were associated with finger sucking during infancy (P < 0.05. We conclude that malocclusions and DOH are common among Brazilian adolescents and that finger sucking during infancy may be a good predictor of DOH occurrence during adolescence.

  16. Educational Intervention in 7- to 11-year-old Children with Malocclusions. Area VII, Cienfuegos

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    Clotilde de la Caridad Mora Pérez

    2014-12-01

    Full Text Available Background: according to the World Health Organization, malocclusions are the third health problem in the world; consequently their detection and proper treatment are a priority. Objective: to evaluate the outcome of an educational intervention in children with malocclusions caused by oral habits. Methods: a quasi-experimental study involving 52 children with malocclusions was conducted in an elementary school in Cienfuegos from September 2010 through June 2011. First, the diagnosis was established; subsequently the Nice Smile Program was implemented on a weekly basis and finally, the results of the educational, preventive and therapeutic actions targeted at children, parents and educators were evaluated in order to reduce malocclusions and their clinical manifestations. Results: the level of awareness in children, parents and educators increased significantly, and 64.6 % of dentomaxillofacial deformities (abnormal bilabial closure, increased overjet and open bite, was eradicated; hence, there was a reduction of children with malocclusions. Conclusion: the intervention was effective since it led to increased awareness about dentomaxillofacial deformities in children, parents and educators. In addition, it contributed to the eradication of this problem in children, and in general, to the improvement of the components of the stomatognathic system.

  17. Associação entre doença hepática gordurosa não alcoólica e marcadores de lesão/função hepática com componentes da síndrome metabólica em indivíduos obesos classe III Association between non-alcoholic fatty liver disease and liver function/injury markers with metabolic syndrome components in class III obese individuals

    Directory of Open Access Journals (Sweden)

    Gabriela Villaça Chaves

    2012-06-01

    Full Text Available OBJETIVO: Investigar a associação entre doença hepática gordurosa não alcoólica (DHGNA e os marcadores de lesão e função hepática com os componentes da síndrome metabólica (SM em indivíduos obesos classe III. MÉTODOS: A população estudada foi constituída por 144 pacientes com obesidade classe III (IMC > a 40 kg/m². A SM foi identificada segundo o critério do NCEP ATP III, por meio da determinação do perfil lipídico, glicemia e insulina basal. Foram quantificados ainda os marcadores de função e lesão hepática. A resistência à insulina (RI foi verificada pelo índice HOMA-IR e o diagnóstico da DHGNA por ressonância magnética. Os cálculos estatísticos foram realizados pelo programa estatístico SPSS na versão 13.0. A associação foi verificada pelo teste Mann-Whitney e qui-quadrado, com nível de significância de 5%. RESULTADOS: Foi encontrada associação significativa entre o diagnóstico de SM e DHGNA (χ² = 6,84; p = 0,01. Quanto aos componentes diagnósticos para SM, constatou-se associação positiva e significativa entre HDL-c (p = 0,05, circunferência da cintura (p OBJECTIVE: To investigate the association between non-alcoholic fatty liver disease (NAFLD and liver function/injury markers with components of metabolic syndrome (MS in class III obese individuals. METHODS: The study population consisted of 144 patients with class III obesity (body mass index [BMI] > 40 kg/m². MS was diagnosed according to the National Cholesterol Education Program - Adult Treatment Panel III (NCEP ATP III criteria, by determining the lipid profile, blood glucose and basal insulin. Liver function/injury markers were also quantified. Insulin resistance (IR was measured by HOMA-IR and NAFLD diagnosis was established by magnetic resonance imaging (MRI. Statistical calculations were performed by SPSS version 13.0. The association was assessed by the Mann-Whitney and Chi-square tests, with a level of significance set at 5

  18. Correction of an adult Class II division 2 individual using fixed functional appliance: A noncompliance approach

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    Shrinivas Basavaraddi

    2016-01-01

    Full Text Available This case report describes the application of fixed functional appliance in the treatment of an adult female having Class II division 2 malocclusion with retroclination of upper incisors. Fixed functional appliance was used to correct the overjet after the uprighting of upper incisors. Fixed functional appliance was fitted on a rigid rectangular arch wire. Application of fixed functional appliance achieved a good Class I molar relationship along with Class I canine relationship with normal overjet and overbite. Fixed functional appliance is effective in the treatment of Class II malocclusions, even in adult patients, and can serve as an alternate choice of treatment instead of orthognathic surgery. This is a case; wherein, fixed functional appliance was successfully used to relieve deep bite and overjet that was ensued after leveling and aligning. We demonstrate that fixed functional appliance can act as a “noncompliant corrector” and use of Class II elastics can be avoided.

  19. SKELETODENTAL CHANGES DURING THE PUBERTAL GROWTH SPURT IN CLASS II DIV I FEMALES: A LONGITUDINAL STUDY

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    M. Shirazi Sh. Etemad Moghadam

    1996-07-01

    Full Text Available This study aimed to determine the quantity and character of growth changes in the skeletodental complex of class II div I malocclusion during the pubertal growth spurt in females. Longitudinal hand-wrist radiographs were obtained from each subject and the onset anil end of the pubertal growth spurt was determined. Accordingly two lateral cephaliograms were taken, superimposed and analyzed. This sample consisted of 36 girls (18 class I ami 18 class II div I malocclusions, with no history of orthodontic treatment. Tl"e results indicate that true changes exist during the short period of pubertal growth spurt, which differ in amount ami direction, in various parts of the face am! cranium; also the pubertal growth spurt may have different effects on identical parameters, when compared between class I and class II div I subjects.

  20. 上海市奉贤区错牙合畸形的 Bolton 指数检测%Bolton analysis with malocclusions in Shanghai Fengxian district

    Institute of Scientific and Technical Information of China (English)

    桂千千; 周宏原; 孙双; 刘梅

    2016-01-01

    differences in anterior ratios among the three Angle malocclusion class(P <0.05).Bolton anterior ratios were (79.88 ±3.15)%,(78.91 ±2.86)% and (80.59 ±1.55)%,mean of Class I and mean of ClassⅢwere bigger than that of Class Ⅱ.Bolton overall ratios of Angle class Ⅰ,classⅡ and class Ⅲ were (79.88 ± 3.15)%,(79.88 ±3.15)% and (79.88 ±3.15)%,and there were no obvious differences in overall ratios among them.Conclusion Bolton index with malocclusions for Shanghai Fengxian District accord with normol Bolton index of our country.Gender and age are not the influencing factors of Bolton index in Fengxian District.Bloton index anomalies are the important fator in malocclusions.We should pay more attention to the Bolton analysis of classmalocclusions in clinical practice,and draw up a treatment plan combined with specific classification.

  1. Mandibular Incisor Extraction Treatment of a Class I Malocclusion with Bolton Discrepancy: A Case Report

    OpenAIRE

    Bayram, Mehmet; ÖZER, Mete

    2007-01-01

    Many approaches for crowded mandibular anterior teeth are currently employed: distal movement of posterior teeth, lateral movement of canines, labial movement of incisors, interproximal enamel reduction, removal of premolars, removal of one or two incisors, and various combinations of the above. Selecting the best treatment is often difficult, and all guidelines do not apply to every case. Treatment by extraction of one single mandibular incisor is not popular in the orthodontic profession de...

  2. Breastfeeding, Bottle Feeding Practices and Malocclusion in the Primary Dentition: A Systematic Review of Cohort Studies

    Directory of Open Access Journals (Sweden)

    Ana Paula Hermont

    2015-03-01

    Full Text Available The World Health Organization recommends exclusive breast feeding for at least six months. However, there is no scientific evidence of the benefits of breast feeding for oral health in children under primary dentition. This study aimed to search for scientific evidence regarding the following question: is bottle feeding associated with malocclusion in the primary dentition compared to children that are breastfed? An electronic search was performed in seven databases. The systematic review included 10 cohort studies. It was not possible to conduct meta-analysis; therefore a qualitative analysis was assessed. The majority of studies evaluated feeding habits by means of questionnaires and conducted a single examination. Three studies observed that bottle feeding was significantly associated with overjet and posterior crossbite. Studies reported several cut-off times for breastfeeding (varying from 1 month up to 3 years of age and several types of malocclusion. Controlling for non-nutritive sucking habits was reported for only half of the studies and this may have led to biased results. The scientific evidence could not confirm a specific type of malocclusion associated with the feeding habits or an adequate time of breastfeeding to benefit the children against malocclusion. Further cohort studies are needed to confirm this evidence.

  3. The relationship between malocclusion, benign joint hypermobility syndrome, condylar position and TMD symptoms.

    Science.gov (United States)

    Barrera-Mora, José Ma; Espinar Escalona, Eduardo; Abalos Labruzzi, Camilo; Llamas Carrera, José Ma; Ballesteros, Emilio Jiménez-Castellanos; Solano Reina, Enrique; Rocabado, Mariano

    2012-04-01

    The current study investigated the association between temporomandibular disorders, malocclusion patterns, benign joint hypermobility syndrome and the initial condylar position. One hundred sixty-two subjects were analyzed using the Rocabado Temporomandibular Pain Analysis; Helkimo Index parameters; the Carter-Wilkinson modified test; and a mounting cast with condylar position indicator registration (MPI). The study revealed a significant association between: 1. Delta H, skeletal pattern (p = 0.034); 2. Delta Y, transversal malocclusion (p = 0.04); 3. right and left, Delta Z, right and left posteroinferior synovial pain (p < 0.05); 4. hypermobility scale, gender (p < 0.001), malocclusion pattern (p = 0.021); 5. TMJ function impairment, gender (p = 0.043); 6. sagittal malocclusion pattern, right temporomandibular pain analysis joint (TPAJ) (p = 0.0034); 7. TMJ function impairment, left and right TPAJ (p = 0.007); and 8. mandibular motion, left and right TPAJ (p = 0.035, p = 0.015). The conclusion was that anterior crossbite and condylar displacements in the vertical plane are risk factors in developing TMJ symptoms.

  4. Malocclusion in elementary school children in beirut: severity and related social/behavioral factors.

    Science.gov (United States)

    Hanna, Antoine; Chaaya, Monique; Moukarzel, Celine; El Asmar, Khalil; Jaffa, Miran; Ghafari, Joseph G

    2015-01-01

    Aim. To assess severity of malocclusion in Lebanese elementary school children and the relationship between components of malocclusion and sociodemographic and behavioral factors. Methods. Dental screening was performed on 655 school children aged 6-11 from 2 public (PB) and 5 private (PV) schools in Beirut. A calibrated examiner recorded occlusion, overjet, overbite, posterior crossbite, midline diastema, and crowding. Another examiner determined the DMFT (Decayed/Missing/Filled Teeth) score. A questionnaire filled by the parents provided data on sociodemographic and behavioral factors. Multinomial, binomial, and multiple linear regressions tested the association of these factors with occlusal indices. Results. Malocclusion was more severe in PB students. Age and sucking habit were associated with various components of malocclusion. Crowding was more prevalent among males and significantly associated with the DMFT score. Income and educational level were significantly higher (P dental health. Compared to Western and WHO norms, the findings prompt health policy suggestions to improve dental care of particularly public school children through regular screenings in schools, prevention methods when applicable, and cost effective practices through public and private enabling agencies. PMID:25691902

  5. Malocclusion in early anatomically modern human: a reflection on the etiology of modern dental misalignment.

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    Rachel Sarig

    Full Text Available Malocclusions are common in modern populations. Yet, as the study of occlusion requires an almost intact dentition in both the maxilla and mandible, searching for the ultimate cause of malocclusion is a challenge: relatively little ancient material is available for research on occlusal states. The Qafzeh 9 skull is unique, as its preserved dentition allowed us to investigate the presence and manifestations of malocclusion. The aim of this study was thus to examine the occlusal condition in the Qafzeh 9 specimen in light of modern knowledge regarding the etiology of malocclusion. We revealed a pathologic occlusion in the Qafzeh 9 skull that probably originated in the early developmental stage of the dentition, and was aggravated by forces applied by mastication. When arch continuity is interrupted due to misalignment of teeth as in this case, force transmission is not equal on both sides, causing intra-arch outcomes such as mesialization of the teeth, midline deviation, rotations and the aggravation of crowding. All are evident in the Qafzeh 9 skull: the midline deviates to the left; the incisors rotate mesio-buccally; the left segment is constricted; the left first molar is buccally positioned and the left premolars palatally tilted. The inter-arch evaluation revealed anterior cross bite with functional shift that might affect force transmission and bite force. In conclusion, the findings of the current study suggest that malocclusion of developmental origin was already present in early anatomically modern humans (AMH (the present case being the oldest known case, dated to ca. 100,000 years; that there is no basis to the notion that early AMH had a better adjustment between teeth and jaw size; and that jaw-teeth size discrepancy could be found in prehistoric populations and is not a recent phenomenon.

  6. Frequency of rhinitis and orofacial disorders in patients with dental malocclusion

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    Tamara Christine de Souza Imbaud

    2016-06-01

    Full Text Available Abstract Objective: To describe the frequency and etiology of rhinitis, oral breathing, types of malocclusion and orofacial disorders in patients treated for dental malocclusion. Methods: Patients with poor dental occlusion (n=89, 8-15 years undergoing orthodontic treatment at the Postgraduate Orthodontics Center (São Paulo, Brazil participated in the study. Rhinitis and oral breathing were diagnosed by anamnesis, clinical assessment and allergic etiology of rhinitis through immediate hypersensitivity skin prick test with airborne allergens. The association between types of breathing (oral or nasal, rhinitis and types of dental malocclusion, bruxism and cephalometric alterations (increased Y axis of facial growth compared to standard cephalometric tracing (Escola de Odontologia da Universidade de São Paulo were assessed. Results: The frequency of rhinitis in patients with dental malocclusion was 76.4% (68, and, of these, 81.7% were allergic (49/60 positive skin prick test, whereas the frequency of oral breathing was 62.9%. There was a significant association between an increased Y axis of facial growth and oral breathing (p<0.001, as well as between oral breathing and rhinitis (p=0.009. There was no association between rhinitis and bruxism. Conclusions: The frequency of rhinitis in children with dental malocclusion is higher than that in the general population, which is approximately 30%. Patients with oral breathing have a tendency to a dolichofacial growth pattern (increased Y axis of facial growth. In patients with rhinitis, regardless of the presence of oral breathing, the dolichofacial growth tendency was not observed.

  7. Frequency of rhinitis and orofacial disorders in patients with dental malocclusion

    Science.gov (United States)

    Imbaud, Tamara Christine de Souza; Mallozi, Márcia Carvalho; Domingos, Vanda Beatriz Teixeira Coelho; Solé, Dirceu

    2016-01-01

    Abstract Objective: To describe the frequency and etiology of rhinitis, oral breathing, types of malocclusion and orofacial disorders in patients treated for dental malocclusion. Methods: Patients with poor dental occlusion (n=89, 8-15 years) undergoing orthodontic treatment at the Postgraduate Orthodontics Center (São Paulo, Brazil) participated in the study. Rhinitis and oral breathing were diagnosed by anamnesis, clinical assessment and allergic etiology of rhinitis through immediate hypersensitivity skin prick test with airborne allergens. The association between types of breathing (oral or nasal), rhinitis and types of dental malocclusion, bruxism and cephalometric alterations (increased Y axis of facial growth) compared to standard cephalometric tracing (Escola de Odontologia da Universidade de São Paulo) were assessed. Results: The frequency of rhinitis in patients with dental malocclusion was 76.4% (68), and, of these, 81.7% were allergic (49/60 positive skin prick test), whereas the frequency of oral breathing was 62.9%. There was a significant association between an increased Y axis of facial growth and oral breathing (p<0.001), as well as between oral breathing and rhinitis (p=0.009). There was no association between rhinitis and bruxism. Conclusions: The frequency of rhinitis in children with dental malocclusion is higher than that in the general population, which is approximately 30%. Patients with oral breathing have a tendency to a dolichofacial growth pattern (increased Y axis of facial growth). In patients with rhinitis, regardless of the presence of oral breathing, the dolichofacial growth tendency was not observed. PMID:26631324

  8. The novel pterostilbene derivative ANK-199 induces autophagic cell death through regulating PI3 kinase class III/beclin 1/Atg‑related proteins in cisplatin‑resistant CAR human oral cancer cells.

    Science.gov (United States)

    Hsieh, Min-Tsang; Chen, Hao-Ping; Lu, Chi-Cheng; Chiang, Jo-Hua; Wu, Tian-Shung; Kuo, Daih-Huang; Huang, Li-Jiau; Kuo, Sheng-Chu; Yang, Jai-Sing

    2014-08-01

    Pterostilbene is an effective chemopreventive agent against multiple types of cancer cells. A novel pterostilbene derivative, ANK-199, was designed and synthesized by our group. Its antitumor activity and mechanism in cisplatin-resistant CAR human oral cancer cells were investigated in this study. Our results show that ANK-199 has an extremely low toxicity in normal oral cell lines. The formation of autophagic vacuoles and acidic vesicular organelles (AVOs) was observed in the ANK-199-treated CAR cells by monodansylcadaverine (MDC) and acridine orange (AO) staining, suggesting that ANK-199 is able to induce autophagic cell death in CAR cells. Neither DNA fragmentation nor DNA condensation was observed, which means that ANK-199-induced cell death is not triggered by apoptosis. In accordance with morphological observation, 3-MA, a specific inhibitor of PI3K kinase class III, can inhibit the autophagic vesicle formation induced by ANK-199. In addition, ANK-199 is also able to enhance the protein levels of autophagic proteins, Atg complex, beclin 1, PI3K class III and LC3-II, and mRNA expression of autophagic genes Atg7, Atg12, beclin 1 and LC3-II in the ANK-199-treated CAR cells. A molecular signaling pathway induced by ANK-199 was therefore summarized. Results presented in this study show that ANK-199 may become a novel therapeutic reagent for the treatment of oral cancer in the near future (patent pending).

  9. Class III antiarrhythmic agents in cardiac failure: lessons from clinical trials with a focus on the Grupo de Estudio de la Sobrevida en la Insuficiencia Cardiaca en Argentina (GESICA).

    Science.gov (United States)

    Doval, H C

    1999-11-01

    The results of previous clinical trials, in a variety of clinical settings, showed that class I agents may consistently increase mortality in sharp contrast to the effects of beta blockers. Attention has therefore shifted to class III compounds for potential beneficial effects on long-term mortality among patients with underlying cardiac disease. Clinical trials with d-sotalol, the dextro isomer (devoid of beta blockade) of sotalol, showed increased mortality in patients with low ejection fraction after myocardial infarction and in those with heart failure; whereas in the case of dofetilide, the impact on mortality was neutral. Because of the complex effects of its actions as an alpha-adrenergic blocker and a class III agent, the impact on mortality of amiodarone in patients with heart failure is of particular interest. A meta-analysis of 13 clinical trials revealed significant reductions in all-cause and cardiac mortality among patients with heart failure or previous myocardial infarction. Among these were 5 controlled clinical trials that investigated the effects of amiodarone on mortality among patients with heart failure. None of these trials was large relative to the beta-blocker trials in the postinfarction patients. However, the larger 2 of the 5 amiodarone trials produced discordant effects on mortality, neutral in one and significantly positive in the other. Some of the differences may be accounted for by the differences in eligibility criteria and baseline characteristics. Future trials that may be undertaken to resolve the discrepancies may need to allow for the newer findings on the effects of concomitant beta blockers, implantable devices, and possibly, spironolactone. All these modalities of treatment have been shown in controlled clinical trials to augment survival in patients with impaired ventricular function or manifest heart failure. Additional trials, some of which are currently in progress, compare amiodarone with implantable devices and other

  10. A comparative study of oral health amongst trisomy 21 children living in Riyadh, Saudi Arabia: Part 1 caries, malocclusion, trauma

    Directory of Open Access Journals (Sweden)

    M. AlSarheed

    2015-10-01

    Conclusions: While there was no significant difference in the incidence of caries between children with and without T21, practitioners should be aware of the disparities in malocclusion and trauma in this vulnerable population.

  11. Relação entre o estado nutricional de vitamina a e a regressão da esteatose hepática após gastroplastia em Y- de- Roux para tratamento da obesidade classe III Relationship of the nutritional status of vitamin a and the regression of hepatic steatosis after Roux-en-Y gastric bypass surgery for treatment of class III obesity

    Directory of Open Access Journals (Sweden)

    Luiz Gustavo de Oliveira e Silva

    2012-12-01

    Full Text Available RACIONAL: A vitamina A participa de várias funções primordiais no organismo humano e as suas concentrações séricas podem estar diminuídas nas doenças crônicas não transmissíveis. OBJETIVO: Avaliar a relação entre o estado nutricional da vitamina A, e a regressão da esteatose hepática em indivíduos submetidos à gastroplastia em Y-de-Roux para tratamento da obesidade classe III. MÉTODOS: Foram estudados 30 pacientes obesos classe III, de ambos os sexos, com esteatose hepática, submetidos à gastroplastia em Y-de-Roux. Seis meses após a operação, os pacientes foram submetidos à ultrassonografia abdominal e distribuídos em dois grupos: grupo 1 - pacientes com esteatose detectada na ultrassonografia e grupo 2 - pacientes sem esteatose detectada na ultrassonografia. No pré-operatório e seis meses após a operação foram realizadas análises antropométricas e exames bioquímicos: insulina basal, glicemia, Homeostasis Model Assessment Index (HOMA IR, colesterol, HDL, LDL, triglicerídeos, AST, ALT, Gama-GT, albumina, bilirrubina total, retinol, e beta caroteno. RESULTADOS: A média de perda de peso foi de 35,05 + 10,47 (pBACKGROUND: Vitamin A participates in several essentials functions in the human body and their serum concentrations may be decreased in non-transmissible diseases. AIM: To assess the relationship of the nutritional status of Vitamin A through the serum concentrations of retinol and beta carotene, with regression of hepatic steatosis in individuals who undergone Roux-en-Y gastric bypass surgery for treatment of class III obesity. METHODS: Were included 30 individuals, male and female, submitted to Roux-en-Y gastric bypass for treatment of class III obesity, who were diagnosed through an abdominal ultrasonography as presenting hepatic steatosis. From the result of an ultrasonography screened six months after the surgical procedure those subjects were divided into two groups: group 1 - patients with steatosis

  12. An Update on Midface Advancement Using Le Fort II and III Distraction Osteogenesis.

    Science.gov (United States)

    Tahiri, Youssef; Taylor, Jesse

    2014-11-01

    Le Fort II and III distraction osteogenesis (DO) is a powerful tool in the craniofacial armamentarium that is most often employed to treat patients with craniofacial syndromes such as Crouzon, Apert, or Pfeiffer syndrome who present with midfacial retrusion, shallow orbits, exorbitism, malocclusion, obstructive sleep apnea and facial imbalance. In this article, the authors will provide the reader with an update on techniques for the treatment of various forms of midfacial retrusion. PMID:25383053

  13. Prevalence of gingival diseases, malocclusion and fluorosis in school-going children of rural areas in Udaipur district

    Directory of Open Access Journals (Sweden)

    Dhar V

    2007-06-01

    Full Text Available High prevalence of dental diseases has been recorded in Rajasthan, however, not much work has been done to ascertain the prevalence of dental diseases in Udaipur district. This study was conducted among 1,587 government school children of Udaipur district in the age group of 5-14 years for recording the prevalence of gingival diseases, fluorosis and malocclusion. Gingivitis was found in 84.37% of children, malocclusion in 36.42% and fluorosis in 36.36%.

  14. The prevalence of malocclusion and its association with dental caries among 12-18-year-old disabled adolescents

    OpenAIRE

    Vellappally, Sajith; Seby J Gardens; Al Kheraif, Abdul-Aziz Abdullah; Krishna, Madhusudan; Babu, Suresh; Hashem, Mohamed; Jacob, Vimal; Anil, Sukumaran

    2014-01-01

    Background To assess the prevalence of malocclusion among 12-18-year-old disabled adolescents in Chennai, Tamil Nadu, India, by using the Dental Aesthetic Index (DAI) and to determine the association of malocclusion with dental caries. Methods This cross-sectional study included 243 children with various mental disabilities with or without physical infirmities. The Dental Aesthetic Index (DAI) and the dentition status were recorded using the World Health Organization Oral Health Surveys – Bas...

  15. Prevalence of malocclusion and orthodontic treatment needs among 12-15 years old school children of Udaipur, India

    OpenAIRE

    Tak, Mridula; Nagarajappa, Ramesh; Sharda, Archana J; Asawa, Kailash; Tak, Aniruddh; Jalihal, Sagar; Kakatkar, Gauri

    2013-01-01

    Objective: The objective of the study is to assess the prevalence of malocclusion and orthodontic treatment needs among 12-15 years old school children of Udaipur, India. Materials and Methods: A cross-sectional descriptive survey was conducted among 887 subjects aged 12-15 years. The prevalence of malocclusion and orthodontic treatment needs was assessed using dental aesthetic index (World Health Organization, 1997). General information on demographic data was also recorded. Chi-square test,...

  16. Transient analyses of the 400MWth-class EFIT accelerator driven transmuter with the multi-physics code: SIMMER-III

    Energy Technology Data Exchange (ETDEWEB)

    Liu Ping, E-mail: ping.liu@areva.co [Karlsruhe Institute of Technology (KIT), Institute for Nuclear and Energy Technologies (IKET), P. O. Box 3640, D-76021 Karlsruhe (Germany); Chen Xuenong; Rineiski, Andrei; Maschek, Werner [Karlsruhe Institute of Technology (KIT), Institute for Nuclear and Energy Technologies (IKET), P. O. Box 3640, D-76021 Karlsruhe (Germany)

    2010-10-15

    In the EUROTRANS Programme of the 6th FP of the EC, EFIT, the European Facility for Industrial Transmutation, a generic conceptual design of a 400MWth ADS transmuter loaded with a CERCER U-free fuel with an MgO matrix, is developed. The safety objectives for the EFIT are achieved on the basis of the defense-in-depth concept. For the safety assessment various protected and unprotected design basis conditions (DBC) and design extension conditions (DEC) transients have been analyzed as e.g. the protected and unprotected loss of flow (PLOF/ULOF), beam trip transients, over power transients and especially the unprotected blockage accidents (UBAs). Key safety analyses of the EFIT core have been performed with the SIMMER-III code, currently the only code which can handle core disruptive conditions for heavy liquid metal cooled reactors. Unprotected transients set upper safety limits and play an important role in the overall safety assessment and transient behaviors of an ADS with MgO based fuel and T91 cladding. The high temperature range is still affected by significant uncertainties, therefore, unprotected accidents with a potential of fuel failure and fission gas release deserve special attention. In this paper, analyses of important and challenging transient cases will be presented. The SIMMER-III simulated results indicate that under the current conditions, the EFIT core can survive in most of the transient cases without pin failure except in the UBA cases. The analyses thus demonstrate the general high safety potential of an ADS like EFIT. Results of the UBA cases show that pin failure happens in the core center and propagation of the pin failure could be possible, while the core will finally arrive at a lower power condition because of the sweeping out of the fuel from the active core.

  17. Sinus lifting before Le Fort I maxillary osteotomy: a suitable method for oral rehabilitation of edentulous patients with skelettal class-III conditions: review of the literature and report of a case

    Directory of Open Access Journals (Sweden)

    Meyer Ulrich

    2007-01-01

    Full Text Available Abstract Background Functional rehabilitation of patients afflicted with severe mandibular and maxillary alveolar atrophy might be challenging especially in malformed patients. Methods Treatment planning using sinus lifting and implant placement before Le Fort I maxillary osteotomy in a patient with severe mandibular and posterior maxillary alveolar atrophy and skelettal class-III conditions due to cleft palate are described. Results A full functional and esthetic rehabilitation of the patient was achieved by a stepwise surgical approach performed through sinus lifting as the primary approach followed by implant placement and subsequent Le Fort I maxillary osteotomy to correct the maxillo-mandibular relation. Conclusion Stabilisation of the maxillary complex by a sinus lifting procedure in combination with computer aided implant placement as preorthodontic planning procedure before Le Fort I maxillary osteotomy seems to be suitable in order to allow ideal oral rehabilitation especially in malformed patients.

  18. Prevalence of malocclusion in relation to premature loss of primary teeth.

    Science.gov (United States)

    Pedersen, J; Stensgaard, K; Melsen, B

    1978-07-01

    The influence of premature extraction of primary teeth. The influence of the site of extraction was analyzed by studying the frequency of malocclusion in the group of children with extraction in the mandible or maxilla only. It was found that early loss of primary teeth would result in an increased frequency of sagittal, vertical as well as transversal malocclusion. As a consequence the need for treatment would increase significantly by early extraction of primary teeth. Whereas extraction in the maxilla would tend to result in need for extraction of permanent teeth; extraction in the mandible would often lead to need for orthodontic treatment of longer duration. On the basis of these findings it could be concluded that maintaining a high standard of dental service for preschool children must be considered good economy, since the need for premature extractions is reduced.

  19. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin), Class III

    Energy Technology Data Exchange (ETDEWEB)

    Dutton, Shirley P.; Flanders, William A.; Zirczy, Helena H.

    2000-05-24

    The objective of this Class 3 project was to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Phase 1 of the project, reservoir characterization, was completed this year, and Phase 2 began. The project is focused on East Ford field, a representative Delaware Mountain Group field that produces from the upper Bell Canyon Formation (Ramsey sandstone). The field, discovered in 1960, is operated by Oral Petco, Inc., as the East Ford unit. A CO{sub 2} flood is being conducted in the unit, and this flood is the Phase 2 demonstration for the project.

  20. Evaluation of factors affecting the diet quality of patients with orthodontic malocclusion

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    Nehir Canıgür Bavbek

    2016-08-01

    Full Text Available OBJECTIVE: The aim was to assess factors which may contribute to the diet quality of adolescents with orthodontic malocclusion. MATERIALS and METHOD: Demographic and dietary data of 46 girls and 30 boys (mean age 11.4 ± 1.4 years, with good oral and systemic health were obtained. Data were evaluated in relation to skeletal growth pattern, malocclusion, overjet, overbite, number of posterior functional tooth units (PFTU and parental education level. Dietary intake was measured by using 24-hour dietary recall method, and diet quality was assessed by using the Healthy Eating Index-2010 (HEI-2010. Energy and nutrient intake was calculated by using the Nutrition Information System (BeBiS program. Intergroup comparisons were performed by using Mann-Whitney U and Kruskal-Wallis tests. RESULTS: Maternal education level affected the total HEI (p = 0.002, total fruit (p = 0.007, whole fruit (p = 0.018 and refined grains (p = 0.044 scores. Skeletal growth patterns, malocclusions, overjet and overbite did not alter the diet quality. Overbite was positively correlated with energy (r = 0.297, p = 0.009, carbohydrate (r = 0.238, p = 0.039 and protein (r = 0.305, p = 0.007 intake. Overjet was positively correlated with greens and beans scores (r = 0.238, p = 0.038. PFTU was positively correlated with the body mass index (r = 0.327, p = 0.004. CONCLUSION: From a clinical perspective, malocclusion may not have a significant impact on the nutritional habits of adolescents. Maternal educational level, however, was found to be the main determinant for the diet quality during adolescence.

  1. Lingual frenulum and malocclusion: An overlooked tissue or a minor issue

    OpenAIRE

    Anna Cecilia Vaz; Pavithra M Bai

    2015-01-01

    Context: Tongue-tie (more formally known as ankyloglossia) is a congenital anomaly characterized by an abnormally short lingual frenulum, which may restrict mobility of the tongue tip impairing its ability to fulfill its functions. The clinical significance of ankyloglossia is varied; rarely symptomatic to a host of problems including infant feeding difficulties, speech disorders, malocclusions, and others. Aims: The need of this study was to evaluate the occurrence and severity of tongue...

  2. Orthodontic treatment need for adolescents in the Campania region: the malocclusion impact on self-concept

    OpenAIRE

    Carotenuto, Marco

    2014-01-01

    Letizia Perillo,1 Maria Esposito,2 Alberto Caprioglio,3 Stefania Attanasio,1 Annamaria Chiara Santini,2 Marco Carotenuto2 1Department of Orthodontics, Second University of Naples, Naples, Italy; 2Clinic of Child and Adolescent Neuropsychiatry, Department of Mental Health, Physical and Preventive Medicine, Second University of Naples, Naples, Italy; 3Department of Orthodontics, University of Insubria, Varese, Italy Background: Dental malocclusions can be considered not only as an oral health ...

  3. Dental Malocclusion and Body Posture in Young Subjects: A Multiple Regression Study

    OpenAIRE

    Giuseppe Perinetti; Luca Contardo; Armando Silvestrini Biasati; Lucia Perdoni; Attilio Castaldo

    2010-01-01

    OBJECTIVES: Controversial results have been reported on potential correlations between the stomatognathic system and body posture. We investigated whether malocclusal traits correlate with body posture alterations in young subjects to determine possible clinical applications. METHODS: A total of 122 subjects, including 86 males and 36 females (age range of 10.8–16.3 years), were enrolled. All subjects tested negative for temporomandibular disorders or other conditions affecting the stomatogna...

  4. The influence of asthma onset and severity on malocclusion prevalence in children and adolescents

    Directory of Open Access Journals (Sweden)

    Luiz Sekio Tanaka

    2012-02-01

    Full Text Available OBJECTIVE: The influence of asthma, its severity levels and onset time on malocclusion occurrence were investigated. METHODS: The sample was composed by 176 children/adolescents, of both genders, aged 3 to 15 years, that were divided in two groups. The asthma group (AG enrolled 88 children/adolescents that were seen at the Breathe Londrina Program. The asthma-free group (AFG enrolled 88 preschool and school children recruited in 2 public schools. Malocclusion diagnosis was made according to WHO criteria (OMS, 1999. RESULTS: A higher prevalence in malocclusions in asthmatic patients in mixed dentition was observed when compared to controls (p0.05 and permanent dentition (p>0.05. A significant association was seen between asthma onset time and marked maxillary overjet (p<0.05, and open bite (p<0.05 in the mixed dentition, being both conditions more common among those that have presented the symptoms of asthma prior to 12 months of age. CONCLUSION: The results of this study indicate that the early manifestation of asthma at first year of life can cause dentofacial changes. Therefore, the prompt diagnostic of the illness, as well as the establishment of a proper therapy could improve the symptoms and chronic complications of asthma and also reduce its impact on craniofacial development.

  5. A Determination of H_0 with the CLASS Gravitational Lens B1608+656 III. A Significant Improvement in the Precision of the Time Delay Measurements

    CERN Document Server

    Fassnacht, C D; Koopmans, L V E; Rusin, D

    2002-01-01

    The gravitational lens CLASS B1608+656 is the only four-image lens system for which all three independent time delays have been measured. This makes the system an excellent candidate for a high-quality determination of H_0 at cosmological distances. However, the original measurements of the time delays had large (12-20%) uncertainties, due to the low level of variability of the background source during the monitoring campaign. In this paper, we present results from two additional VLA monitoring campaigns. In contrast to the ~5% variations seen during the first season of monitoring, the source flux density changed by 25-30% in each of the subsequent two seasons. We analyzed the combined data set from all three seasons of monitoring to improve significantly the precision of the time delay measurements; the delays are consistent with those found in the original measurements, but the uncertainties have decreased by factors of two to three. We combined the delays with revised isothermal mass models to derive a mea...

  6. Mycobacterium tuberculosis class II apurinic/apyrimidinic-endonuclease/3'-5' exonuclease III exhibits DNA regulated modes of interaction with the sliding DNA β-clamp.

    Science.gov (United States)

    Khanam, Taran; Rai, Niyati; Ramachandran, Ravishankar

    2015-10-01

    The class-II AP-endonuclease (XthA) acts on abasic sites of damaged DNA in bacterial base excision repair. We identified that the sliding DNA β-clamp forms in vivo and in vitro complexes with XthA in Mycobacterium tuberculosis. A novel 239 QLRFPKK245 motif in the DNA-binding domain of XthA was found to be important for the interactions. Likewise, the peptide binding-groove (PBG) and the C-terminal of β-clamp located on different domains interact with XthA. The β-clamp-XthA complex can be disrupted by clamp binding peptides and also by a specific bacterial clamp inhibitor that binds at the PBG. We also identified that β-clamp stimulates the activities of XthA primarily by increasing its affinity for the substrate and its processivity. Additionally, loading of the β-clamp onto DNA is required for activity stimulation. A reduction in XthA activity stimulation was observed in the presence of β-clamp binding peptides supporting that direct interactions between the proteins are necessary to cause stimulation. Finally, we found that in the absence of DNA, the PBG located on the second domain of the β-clamp is important for interactions with XthA, while the C-terminal domain predominantly mediates functional interactions in the substrate's presence.

  7. Orthodontic treatment need for adolescents in the Campania region: the malocclusion impact on self-concept

    Directory of Open Access Journals (Sweden)

    Perillo L

    2014-03-01

    Full Text Available Letizia Perillo,1 Maria Esposito,2 Alberto Caprioglio,3 Stefania Attanasio,1 Annamaria Chiara Santini,2 Marco Carotenuto2 1Department of Orthodontics, Second University of Naples, Naples, Italy; 2Clinic of Child and Adolescent Neuropsychiatry, Department of Mental Health, Physical and Preventive Medicine, Second University of Naples, Naples, Italy; 3Department of Orthodontics, University of Insubria, Varese, Italy Background: Dental malocclusions can be considered not only as an oral health problem, because they are linked to quality of life perception. Many factors related to malocclusion have strong influences on the perception of facial esthetics (eg, anterior tooth alignment, tooth shape and position, lip thickness, symmetric gingival or tooth contour, lip profile, and overjet. Many reports have shown that the perception of facial esthetics can influence psychological development from early childhood to adulthood. The aim of this study is to investigate the effect of dental malocclusion on self-esteem in a sample of adolescents. Materials and methods: The study population was composed of 516 orthodontically untreated subjects (256 males mean ages 13.75±1.977 years recruited from schools in the Campania region of Italy between January 2011 and July 2011. To evaluate the self-esteem grade in our population, all subjects filled out the Multidimensional Self Concept Scale questionnaire and attended an orthodontic clinical evaluation to estimate dental occlusal aspects. Results: Pearson's analysis shows the relationship in our sample between some occlusal characteristics (crossbite and dental crowding and aspects of self-concept evaluation (social, competence, academic, physical, and global score of the Multidimensional Self Concept Scale questionnaire. Moreover, logistic regression analysis shows the potential role of dental crowding (odds ratio 5.359; 95% confidence interval 3.492–8.225 and crossbite (odds ratio 6.153; 95% confidence

  8. 骨性错(牙合)患者颌面部美观的自我评价%Self-evaluation of dentofacial esthetics in skeletal malocclusion patients

    Institute of Scientific and Technical Information of China (English)

    孙伟; 侯敏; 王建国

    2013-01-01

    目的 调查骨性错(牙合)患者以及正常人群对牙、颌面部美观的自我评价是否存在差异.方法 受试者分为3组:骨性错(牙合)Ⅱ类组、骨性错(牙合)Ⅲ类组以及对照组.3组间性别、年龄比较,差异无统计学意义.通过问卷调查的方式,分别对自己牙齿和面部美观的满意度进行自我评估.使用方差分析、直线回归和Logistic回归进行统计学处理.结果 骨性错(牙合)患者对自己牙、颌面外形的满意度低于对照组(P<0.05).骨性Ⅱ类错(牙合)患者和所有女性对她们的牙齿外形的满意度较低.其中牙齿的形状(44.5%)和前突(17.8%)是牙齿外形满意度低的最主要原因.3组受试者中女性均比男性对自己的颌面部外观满意度低.最不满意的面部外观主要集中在颏部(53%)、面部轮廓(37%)以及微笑时牙齿显露的部位(33%).骨性Ⅲ类错(牙合)患者比骨性Ⅱ类错(牙合)患者更渴望改变他们的侧貌.结论 女性和骨性错(牙合)患者对他们的颌面美观满意度低.骨性Ⅱ类错(牙合)患者对他们牙齿美观满意度低,骨性Ⅲ类错(牙合)患者更关心他们的侧貌.%Objective To investigate the difference between the self-evaluation of patients with dental and facial esthetics in skeletal malocclusion and normal persons.Methods The subjects were divided into three groups:62 patients with skeletal Class Ⅱ,84 patients with skeletal Class Ⅲ,as well as 130 persons in control group.There was no obvious difference in gender and age among the three groups.Happiness with dental and facial appearance was assessed using questionnaires.Analysis of variance,linear regression and logistic regression were used for statistical analysis.Results Skeletal malocclusion patients were less happy with their dental appearance than control group.Class Ⅱ patients and women had lower happiness scores for their dental appearance.Among skeletal malocclusion patients,the shape (44.5

  9. Relação entre má oclusão e hábitos em respiradores orais Relationship between malocclusion and oral habits in mouth breathing

    Directory of Open Access Journals (Sweden)

    Flávia Leães de Almeida

    2009-03-01

    Full Text Available OBJETIVO: verificar a relação entre má oclusão e hábitos orais deletérios em um grupo de respiradores orais. MÉTODOS: estudo retrospectivo realizado por meio da análise de dados dos prontuários de 41 crianças, com idades entre sete e 12 anos, sendo 21 do sexo masculino e 20 do sexo feminino, todas respiradoras orais. As informações coletadas foram organizadas em um Banco de Dados no programa Excel, considerando-se as variáveis: idade, sexo, presença e tipo de hábito oral, e presença e tipo de má oclusão. RESULTADOS: todas as crianças apresentavam algum tipo de má oclusão, com predomínio de classe II de Angle, e sobressaliência acentuada; entre os hábitos, o mais incidente foi o de colocação de objetos na boca, embora todas as crianças tenham apresentado um, ou mais hábitos deletérios; no cruzamento das variáveis, a única relação estatisticamente significante encontrada foi entre o hábito de lamber lábios e a sobressaliência acentuada. CONCLUSÃO: conclui-se que, nessa amostra, a presença de hábitos deletérios não foi determinante para a instalação das más oclusões, que a respiração oral pode ter desencadeado as más oclusões nesse grupo e que, a associação dos hábitos deletérios com a respiração oral, pode ter agido como fator agravante para a instalação, ou desenvolvimento das más oclusões nessas crianças.PURPOSE: to check the relationship between malocclusion and deleterious oral habits in a group of mouth breathing. METHODS: this study was accomplished through data analysis of 41 children handbooks, with ages between 7 and 12 years, being 21 of masculine gender and 20 of feminine gender, all mouth breathing. The collected information was organized in a database using an Excel program, considering the variables: age, gender, presence and type of oral habit, and presence and type of malocclusion. RESULTS: all children presented some type of malocclusion, with prevalence of class II of

  10. PowerScope a Class II corrector - A case report.

    Science.gov (United States)

    Paulose, Joby; Antony, Palathottungal Joseph; Sureshkumar, Brijesh; George, Susha Mariam; Mathew, Manu Mundackal; Sebastian, Joseph

    2016-01-01

    Managing mild to moderate Class II malocclusion is a one of the common and major challenges to orthodontists. Class II discrepancies with mandibular deficiency during active growth are usually treated by myofunctional appliances. Fixed functional appliances evolved due to the noncompliance with conventional myofunctional appliances. This case report illustrates the efficiency of PowerScope in correction of skeletal Class II with mandibular deficiency in a patient aged 13 years who has reported to the department with a chief complaint of forwardly placed upper front teeth. This case with functional jaw retrusion was treated initially with MBT 0.022" prescription followed by PowerScope. Pre-, mid- and post-treatment cephalograms were obtained, and cephalometric analysis was performed. Stable and successful results were obtained with a substantial improvement in facial profile, skeletal jaw relationship, and overall esthetic appearance of the patient. A significant forward displacement of the mandible was the principal element for successful correction of Class II malocclusion. PowerScope provides the best results for Class II management, thus enables us to treat such cases by a nonextraction approach rather than contemplating extractions. PMID:27307671

  11. Malocclusion, dental aesthetic self-perception and quality of life in a 18 to 21 year-old population: a cross section study

    Directory of Open Access Journals (Sweden)

    Claudino Dikson

    2013-01-01

    Full Text Available Abstract Background Aesthetic alterations in the face can be self-perceived and can affect quality of life. For young people, physical attractiveness is an important factor affecting social relationships. The aim of this study was to estimate the prevalence of malocclusion, identify the most common types and test its association with oral aesthetic self-perception in 18 to 21 year-old population of male young adults. Methods A cross-sectional study was carried out involving 138 Brazilian Army soldiers. Data collection included socio demographic profile, malocclusion status through the Dental Aesthetic Index (DAI and oral aesthetic self-perception as indicated by the Oral Aesthetic Subjective Impact Scale (OASIS. The chi-square and Fisher’s exact test were used to test for homogeneity of proportions. The stepwise multivariate logistic regression analysis was used to test for the relationship between the poorer oral aesthetic self-perception and parental and soldier’s education, per capita income, history of caries in all teeth and only on anterior teeth, dental trauma, previous orthodontic treatment and malocclusion. Results The prevalence of malocclusion was 45.6%. Incisor teeth crowding and misalignment of lower incisors were the most common types of malocclusions. A statistically significant and independent association between malocclusion and poorer oral aesthetic self-perception in the multivariate analysis was observed. Subjects with severe malocclusion conditions showed 88% higher prevalence [prevalence ratio =1.88 (95% CI, 1.30 – 2.72; p = 0.001] of poorer aesthetic self-perception comparing to those with minor malocclusion. Conclusions A high prevalence of malocclusion was observed. The young adults presenting severe malocclusion had a higher and independent prevalence of poorer oral aesthetic self-perception.

  12. Investigation of Class I, II and III Integrons among Acinetobacter Strains Isolated from Ventilator-Associated Pneumonia Patients in Intensive Care Unit of Rasoul Akram Hospital in Tehran, Iran

    Directory of Open Access Journals (Sweden)

    Hajar Mohammadi-Barzelighi

    2015-10-01

    Full Text Available Background: Multi-drug resistant strains of Acinetobacter spp. have created therapeutic problems worldwide. The objective of this study was to detect integrons  in Acinetobacter  spp. isolates  from Ventilator-Associated  Pneu- monia patients using PCR method.Methods: A total 51 Bronchoalveolar lavage samples were obtained from pa-tients in ICU and examined for Acinetobacter spp. infection by biochemical and PCR methods using blaOXA51-like primers. Antimicrobial susceptibility testing was performed using disk diffusion and MIC methods.Results: Among 51 patients with VAP (62.7% males, 35.2% females, mean age 53 year, 50 (98% were positive, with a high prevalence of gram-nega- tive bacteria, mainly Acinetobacter spp. (70%, from which A. baumani was detected in 34 (68% and A. lwoffii in 1 (2% of isolates. More than 90% of isolates were resistant to imipenem,  piperacillin+tazobactam,  third genera- tion cephalosporins and gentamicin, while the most effective antibiotic was colistin (100%. The correlation coefficient between disk diffusion and MIC was 0.808 (p = 0.001. Three Acinetobacter isolates (8% harbored integrase I gene but none of isolates contained Class II or III integrons.Conclusion: The results showed that colistin was an effective antibiotic andcan be used for treatment  of patients in ICU. Due to the high number of MDR isolates lacking Integrons it can be concluded that although class I in- tegrons are important among clinical isolates of A. baumannii, they have no significant  role  in  dissemination  of  antibiotic  resistance  genes  in  Rasoul Akram  Hospital in Tehran, Iran. The presence of IntI in A. lwoffii may be related to transfer of integron to A. baumannii which can be considered as an important threat for hospitalized patients.

  13. Treating dental crowding with mandibular incisor extraction in an Angle Class I patient

    OpenAIRE

    Gislana Braga Machado

    2015-01-01

    Mandibular dental crowding often encourages patients to seek orthodontic treatment. The orthodontist should decide between protrusion of incisors or decrease in dental volume so as to achieve proper alignment and leveling. The present study reports the treatment of an Angle Class I malocclusion adolescent female brachyfacial patient with severe mandibular dental crowding, increased curve of Spee and deep overbite. The patient was treated with extraction of a mandibular incisor. This case was ...

  14. Deciding factors in the treatment of Class II division 1 cases with and without single-jaw extractions.

    Science.gov (United States)

    Afaf, Houb-Dine; Bahije, Loubna; Zaoui, Fatima; Abouqal, Redouane; Rerhrhaye, Wiam

    2014-06-01

    Extraction of two upper premolars in Class II division 1 occlusions often constitutes a therapeutic compromise for the orthodontic practitioner. The aim of our study was to compare the initial occlusal and cephalometric severity of Class II division 1 malocclusions in two groups of patients treated with and without extraction of two upper premolars and thus determine the factor or factors determining this therapeutic option. Examination of the casts and cephalometric analysis of 31 patients presenting a Class II division 1 malocclusion were made. The non-extraction group comprised 16 patients and the group undergoing extraction of two upper premolars comprised 15 patients. Discriminant analysis was applied using binary decision trees in order to identify the variable which best distinguished the two groups. Maxillary incisor-canine crowding was selected to discriminate between the patients at pretreatment stage; 93.5% of the patients were correctly classified using this factor. PMID:24820698

  15. Root growth restraint can be an acclimatory response to low pH and is associated with reduced cell mortality: a possible role of class III peroxidases and NADPH oxidases.

    Science.gov (United States)

    Graças, J P; Ruiz-Romero, R; Figueiredo, L D; Mattiello, L; Peres, L E P; Vitorello, V A

    2016-07-01

    Low pH (Solanum lycopersicum cv Micro-Tom) roots were exposed directly or gradually to low pH through step-wise changes in pH over periods ranging from 4 to 24 h. Roots exposed gradually to pH 4.5 grew even less than those exposed directly, indicating a plant-coordinated response. Direct exposure to pH 4.0 suppressed root growth and caused high cell mortality, in contrast to roots exposed gradually, in which growth remained inhibited but cell viability was maintained. Total class III peroxidase activity increased significantly in all low pH treatments, but was not correlated with the observed differential responses. Use of the enzyme inhibitors salicylhydroxamic acid (SHAM) or diphenyleneiodonium chloride (DPI) suggest that peroxidase and, to a lesser extent, NADPH oxidase were required to prevent or reduce injury in all low pH treatments. However, a role for other enzymes, such as the alternative oxidase is also possible. The results with SHAM, but not DPI, were confirmed in tobacco BY-2 cells. Our results indicate that root growth inhibition from low pH can be part of an active plant response, and suggest that peroxidases may have a critical early role in reducing loss of cell viability and in the observed root growth constraint. PMID:26891589

  16. ISW for the Treatment of Adult Angle Class I Crowding with Acceptable Lateral Profile Case

    OpenAIRE

    Tian-yu OU-YANG; Jian-hong YU; Tsai, Ya-Yu; Yu, Chien-Chih

    2015-01-01

    This article describes a 34-year-old adult female with chief complaint of poor dental alignment. She presented with Angle Class I crowding with acceptable lateral profile and had been treated with a non-extraction approach. The diagnosed after examination and analysis was Angle Class I malocclusion on Class I skeletal base with deep overbite and severe crowding. Treatment plan was carried out to preserve premolars and create space by using the MEAW technique, combined with ...

  17. Clinical association between teeth malocclusions, wrong posture and ocular convergence disorders: an epidemiological investigation on primary school children

    Directory of Open Access Journals (Sweden)

    Silvestrini-Biavati Armando

    2013-01-01

    Full Text Available Abstract Background As the various systems in the body are inter-connected to form a single structural unit, a pathological condition in one area can also affect other areas. There are many known correlations between the visual and motor system. The importance of visual function, particularly the paracentral peripheral field of view, in motor coordination, ambulation and the maintenance of balance has been amply demonstrated. In line with current medical principles, which are moving towards a more holistic view of the human body, this study aims to investigate, in an interdisciplinary manner, the incidence of dental malocclusions together with posture and eye convergence disorders. Methods Six hundred and five children attending at the 3rd, 4th and 5th years of seven Genoa primary schools were examined. Each child underwent the following examinations: (i dental/occlusal; (ii orthoptic; and (iii postural. Occlusal data concerned the presence of cross-bite, midline deviation with a mandibular shift, bad habits and deep or open bite. Postural assessment involved frontal and lateral inspection, investigation during trunk flexion and ambulation, and note of any asymmetry in the lower limbs. The recorded orthoptic data included those pertaining to ocular dominance, a cover test, convergence and the Brock string test. Results A prevalence of cases with an unphysiological gait was found in patients with overjet (14.70% or overbite (14.87%, while the percentage of patients with normal occlusion that showed an unphysiological gait was 13.08%. Also, about 93.8%–94.2% of children showed normal legs without dysmetry, with no difference in respect to the type of occlusion. Subjects with an open bite or deep bite showed a slightly different distribution of right or left dominant eyes. Conclusion About 13% of children showed a pathological gait and, among them, vertical anomalies of occlusion (deep bite or open bite were prevalent with respect to the other

  18. Three-dimensional finite element analysis of unilateral mastication in malocclusion cases using cone-beam computed tomography and a motion capture system

    Science.gov (United States)

    2016-01-01

    Purpose Stress distribution and mandible distortion during lateral movements are known to be closely linked to bruxism, dental implant placement, and temporomandibular joint disorder. The present study was performed to determine stress distribution and distortion patterns of the mandible during lateral movements in Class I, II, and III relationships. Methods Five Korean volunteers (one normal, two Class II, and two Class III occlusion cases) were selected. Finite element (FE) modeling was performed using information from cone-beam computed tomographic (CBCT) scans of the subjects’ skulls, scanned images of dental casts, and incisor movement captured by an optical motion-capture system. Results In the Class I and II cases, maximum stress load occurred at the condyle of the balancing side, but, in the Class III cases, the maximum stress was loaded on the condyle of the working side. Maximum distortion was observed on the menton at the midline in every case, regardless of loading force. The distortion was greatest in Class III cases and smallest in Class II cases. Conclusions The stress distribution along and accompanying distortion of a mandible seems to be affected by the anteroposterior position of the mandible. Additionally, 3-D modeling of the craniofacial skeleton using CBCT and an optical laser scanner and reproduction of mandibular movement by way of the optical motion-capture technique used in this study are reliable techniques for investigating the masticatory system. PMID:27127690

  19. Evaluation of Sander Ⅱ appliance in the treatment of Angle Ⅱ malocclusion with mandibular retrusion of adolecents%SanderⅡ矫治青少年下颌后缩的疗效评价

    Institute of Scientific and Technical Information of China (English)

    司新芹; 李湘琳; 李洋; 侯玉霞; 王菲; 潘峰; 刘路

    2016-01-01

    目的:评价 SanderⅡ型矫治器治疗青少年下颌后缩者颅面软硬组织的改善情况,分析其作用机制。方法:选择15例青少年安氏Ⅱ类下颌后缩患者(男6例,女9例),采用 SanderⅡ型矫治器矫治,比较其治疗前、后 X 线头影测量的28项指标的改变情况。结果:治疗后患者的 SNB、B-OLP、Pg-OLP、Ii-OLP、Ms-OLP、Mi-OLP、N-Me、ANS-Me、S-Go、软组织面角、鼻唇角、颏厚度均显著增加;ANB、覆盖、H 角、U1-E 线距均较治疗前显著减小,且差异均有统计学意义(P <0.05)。SN-MP、SN-OL 和Y轴无改变。结论:SanderⅡ型矫治器可有效地促进下颌骨健康的生长发育,通过协调上、下颌骨位置而有效的改善下颌后缩面型。%Objective:To evaluate the effects of Sander Ⅱ appliance in the orthodontic treatment of adolescent ClassⅡmalocclusion. Methods:15 cases (6 male and 9 female)of adolescent ClassⅡ malocclusion with mandibular retrution were treated with Sander Ⅱappliance.Pre-treatment and post-treatment Lateral cephalogram measurements were traced and analyzed in terms of 28 indicators. SPSS 19.0 software package was used for paired t test.Results:After treatment,15 patients achieved remarkable improvement in the maxillofacial profile and normal overjet of teeth.The cephalometric analysis showed that ANB,OJ,H°and U1-E decreased(P <0. 05),SNB,B-OLP,Pg-OLP(mm),Ii-OLP,Ms-OLP(mm),Mi-OLP(mm),N-Me,ANS-Me,S-Go,Go-Gn,N'-Pg'/FH,Cm-Sn-Ls and Pg-Pg'increased(P <0.05).There was no significant change in SN-MP,SN-OL and Y-axis before and after treatment. Conclusion:Sander Ⅱ appliance is effective in the treatment of adolescent early Classmalocclusion.

  20. Fermilab III

    International Nuclear Information System (INIS)

    The total ongoing plans for Fermilab are wrapped up in the Fermilab III scheme, centrepiece of which is the proposal for a new Main Injector. The Laboratory has been awarded a $200,000 Illinois grant which will be used to initiate environmental assessment and engineering design of the Main Injector, while a state review panel recommended that the project should also benefit from $2 million of funding

  1. 成年正畸患者心理状况与ICON指数的相关性研究%Correlation Study between malocclusion severity and psychological state of adolescent malocclusion patients

    Institute of Scientific and Technical Information of China (English)

    徐庆; 张延晓; 臧爱平; 唐丽琴

    2011-01-01

    Objective To identify the correlation between malocclusion severity and psychological state of adolescent malocclusion patients. Methods 100 initial visited malocclusion patients (25.2±3.4 years old; Female 50,Male 50) were contained in this study.The psychological state of adolescent malocclusion patients and ICON index were evaluated from the SCL-90 scale and study models.Correlations between them were analyzed by the independent-T test, Kendall test and Spearman test in SPSS 16.0. Results Except for the factors of forcing and hostile, the other factor marks of SCL-90 were higher significantly in experiment group than those in normal pattern. Paranoia and interpersonal sensitivity have sex differences. ICON value in patients were significantly positively correlated with somatization, interpersonal sensitivity and depression factors, and negatively correlated with paranoid ideation. Conclusion Most adult orthodontic patients have mental problems.There is some correlation with malocclusion severity,we should be attention to identify and take some corresponding steps.%目的:通过分析成年正畸患者的心理状况和错??(牙合)畸形的严重程度,初步探求二者的关联性,为临床工作提供指导.方法:以100例(男50例,女50例)成年正畸患者为研究对象,利用精神症状自评量表(Symptom Checklist 90,SCL-90)获取数据,采用反映错??(牙合)畸形严重程度的评分标准(Index of complexity,outcome and need,ICON)对正畸治疗前的模型进行评分,SPSS软件统计学分析.结果:成年正畸患者除恐怖和敌对外,其它因子均高于全国常模;偏执和人际关系敏感因子存在性别差异.患者ICON值与躯体化、人际关系敏感和抑郁因子存在显著正相关性;与偏执因子存在负相关性.结论:成年正畸患者存在不同程度的心理问题,与错??(牙合)畸形的严重程度存在一定程度的关联性,在临床治疗中应注意鉴别并辅助心理治疗.

  2. Lateral cephalometric diagnosis of asymmetry in Angle Class II subdivision compared to Class I and II

    Directory of Open Access Journals (Sweden)

    Aparecida Fernanda Meloti

    2014-08-01

    Full Text Available INTRODUCTION: Lateral cephalometric radiographs are traditionally required for orthodontic treatment, yet rarely used to assess asymmetries. OBJECTIVE: The objective of the present study was to use lateral cephalometric radiographs to identify existing skeletal and dentoalveolar morphological alterations in Class II subdivision and to compare them with the existing morphology in Class I and II relationship. MATERIAL AND METHODS: Ninety initial lateral cephalometric radiographs of male and female Brazilian children aged between 12 to 15 years old were randomly and proportionally divided into three groups: Group 1 (Class I, Group 2 (Class II and Group 3 (Class II subdivision. Analysis of lateral cephalometric radiographs included angular measurements, horizontal linear measurements and two indexes of asymmetry that were prepared for this study. RESULTS: In accordance with an Index of Dental Asymmetry (IDA, greater mandibular dental asymmetry was identified in Group 3. An Index of Mandibular Asymmetry (IMA revealed less skeletal and dental mandibular asymmetry in Group 2, greater skeletal mandibular asymmetry in Group 1, and greater mandibular dental asymmetry in Group 3. CONCLUSION: Both IDA and IMA revealed greater mandibular dental asymmetry for Group 3 in comparison to Groups 1 and 2. These results are in accordance with those found by other diagnostic methods, showing that lateral cephalometric radiography is an acceptable method to identify existing skeletal and dentoalveolar morphological alterations in malocclusions.

  3. Cephalometric evaluation of the hyoid triangle before and after maxillary rapid expansion in patients with skeletal class II, mixed dentition, and infantile swallowing

    Science.gov (United States)

    Parisella, Valeria; Vozza, Iole; Capasso, Francesca; Luzzi, Valeria; Ierardo, Gaetano; Nofroni, Italo; Polimeni, Antonella

    2012-01-01

    Summary Background Rocabado’s hyoid triangle is the only cephalometric parameter that can assess the effects of orthodontic treatment on tongue posture. Aim To evaluate the restoration of tongue posture and function by conducting a cephalometric assessment of the hyoid triangle before and after rapid maxillary expansion. Methods Sixty-four healthy patients aged 6–11 years with skeletal class II malocclusion, mixed dentition, and infantile swallowing took part in this study. They submitted to lateral cephalometric radiography before and after orthodontic maxillary rapid expansion, in order to assess the resulting changes in the proportions of the hyoid triangle (following Rocabado’s parameters). The cephalometric findings were compared according to sex, age, and divergence using the chi-square McNemar test at the 5% significance level (p<0.05). Results The orthodontic treatment resulted an improvement from skeletal class II malocclusion to class I, with elimination of infantile swallowing in 81.8% of male patients [95% confidence interval (CI)=61.5–92.7%], in 87.1% of patients aged 6–7 years (95% CI=71.1–94.9%). Conclusions This cephalometric analysis revealed that the hyoid triangle was modified by the orthodontic maxillary expansion, reconditioning of tongue posture and function particularly among male, aged 6–7 years old with skeletal class II malocclusion, mixed dentition, and infantile swallowing. PMID:23386929

  4. Alcohol dehydrogenase (ADH) isozymes in the Adh{sup N}/Adh{sup N} strain of Peromyscus maniculatus (ADH{sup {minus}}deermouse) and a possible role of Class III ADH in alcohol metabolism

    Energy Technology Data Exchange (ETDEWEB)

    Haseba, Takeshi; Yamamoto, Isao; Kamii, Hajime [Nippon Medical School, Tokyo (Japan)] [and others

    1995-10-01

    Deermouse ADH isozymes have been investigated recently using cDNA probes; these studies have revealed the deletion of the Adh-1 gene for Class I ADH in the ADH{sup {minus}} strain but the presence of the Adh-2 gene encoding a possible new class of ADH in both ADH{sup {minus}} and ADH{sup +} strains. However, this potential class of ADH has not been identified as an electrophoretic phenotype, although its mRNA has been found exclusively in the liver of both strains. Furthermore, deermouse ADH isozymes other than Class I have not been systematically studied at a class level. In the present study, we thoroughly investigated the ADH systems in deermouse using hexanol as a substrate, in addition to ethanol, to detect all classes of ADH. The classes of ADH in the liver and stomach were compared between the two strains by a kinetic study and electrophoretic analysis on the basis of substrate specificity, pyrazole sensitivity, and immunoreactivity. Furthermore, we compared the liver and stomach ADH activities of deermouse with those of the ddY mouse strain and we discuss the possible roles of ADH isozymes other than Class I in alcohol metabolism of the ADH{sup {minus}} strain. 37 refs., 4 figs., 1 tab.

  5. New Method for Fabrication of Gunning Splint in Orthognathic Surgery for Edentulous Patients

    OpenAIRE

    Siadat, H.; M. Arshad; Shirani, G.; Alikhasi, M.

    2012-01-01

    Treatment planning poses difficulties in edentulous patients for orthognathic surgeryprediction and fixation.Treatment of severe class III malocclusion frequently requires orthognathic surgicalprocedures. For such patients, orthognathic surgery would be the only optionbefore prosthetic rehabilitation.This clinical report describes step-by-step fabrication of a surgical splint for anedentulous 22-year-old patient with a severe class III malocclusion.The patient wound up in class I occlusions a...

  6. PowerScope a Class II corrector – A case report

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    Joby Paulose

    2016-01-01

    Full Text Available Managing mild to moderate Class II malocclusion is a one of the common and major challenges to orthodontists. Class II discrepancies with mandibular deficiency during active growth are usually treated by myofunctional appliances. Fixed functional appliances evolved due to the noncompliance with conventional myofunctional appliances. This case report illustrates the efficiency of PowerScope in correction of skeletal Class II with mandibular deficiency in a patient aged 13 years who has reported to the department with a chief complaint of forwardly placed upper front teeth. This case with functional jaw retrusion was treated initially with MBT 0.022” prescription followed by PowerScope. Pre-, mid- and post-treatment cephalograms were obtained, and cephalometric analysis was performed. Stable and successful results were obtained with a substantial improvement in facial profile, skeletal jaw relationship, and overall esthetic appearance of the patient. A significant forward displacement of the mandible was the principal element for successful correction of Class II malocclusion. PowerScope provides the best results for Class II management, thus enables us to treat such cases by a nonextraction approach rather than contemplating extractions.

  7. A descriptive study of malocclusion in Malian, Cuban and Venezuelan 5-9 year-old children

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    Roberto Macías Gil

    2014-05-01

    Full Text Available Introduction Awareness of the oral health status of a population is indispensable to correctly plan, organize, direct and supervise dental care. Its periodic evaluation allows monitoring the progress of primary dental care programs, and introducing necessary adjustments in order to accomplish dental care goals. In this context, early orthodontic intervention allows correct development of oral occlusion and prevents complications. Objective The purpose of this study is to study dental occlusion characteristics in Malian, Cuban, and Venezuelan children from Bamako, Mali (between 2006 and 2008, the state of Portuguesa, Venezuela (between 2011 and 2013, and Bartolome Maso in Granma, Cuba (between 2009 and 2011. It also aims to determine prevalence, to classify malocclusion according to Angle criteria, and to identify risk factors for this condition. Methods A descriptive cross-sectional study was conducted using simple or stratified random sampling depending on the patient’s age, the time period of the mission (two years and the place where the study was conducted. Among the patients seeking basic dental care, those who were between five and nine years old were included and their data collected in a form designed for that purpose. Results Malocclusion is most frequently found in Cuban children (79.1%, followed by Venezuelan children (67.2% and Malian children (40%. Angle type I malocclusion predominates with 50.2% in Malian, 58.5% in Venezuelan, and 78.7 in Cubans. One of the most important risk factors was dental cavities in the three groups: 91.8% in Malian, 78.26% in Venezuelan, and 34.7% in Cubans. Deforming oral habits were also observed from 40.7%, 65.5% up to 72.1%. Premature tooth loss appeared between 60% and 84.1% and was directly related to dental cavities. Interproximal cavities and defective dental restorations were also observed. Conclusion Malocclusion was found in over 40% of cases and Angle type I was the most prevalent. Risk

  8. 安氏Ⅱ类错牙合牙量不调的对比研究%Comparison of the tooth size discrepancies between ClassⅡ1 andⅡ2 malocclusion

    Institute of Scientific and Technical Information of China (English)

    李伟; 黄玉婷

    2016-01-01

    AIM:To compare of the tooth size discrepancies between Class Ⅱ1 and Ⅱ2 malocclusion. METHODS:120 casts of ClassⅡdivision 1 and Class II division 2 malocclusion were included.Mesio-distal width of the teeth was measured and Bolton Index was calculated.Statistical analysis was made between the 2 groups. RESULTS:1.The sum of anterior tooth width and the sum of total dentition width were not significantly differenct be-tween the 2 groups(P >0.05)of in the male,but were significantly different in the females(P <0.05).2.There was no significant difference of the Bolton index between the two groups(P <0.05).CONCLUSION:Tooth size discrep-encie in maxillary and mandibular can be one of the factors resulting in deep overbite and overjet of Class II malocclu-sion.%目的:探讨安氏Ⅱ类错牙合中两亚类错牙合畸形在牙牙合特征方面的差异。方法:选择安氏Ⅱ1、Ⅱ2类错牙合患者各120例,分别测量并比较两亚类错牙合的前、全牙冠宽度及 Bolton 指数。结果:①在安氏Ⅱ1、Ⅱ2类错牙合患者中,男性前牙冠宽度之和及全牙列牙冠宽度之和在两类错牙合之间无显著性差异(P >0.05),而在女性中则差异显著(P <0.05);②同种类型错牙合不同性别间及合并男女后比较安氏Ⅱ1、Ⅱ2类错牙合,前牙比及全牙比的 Bolton 指数均无显著性差异(P >0.05)。结论:上下颌牙量不调是造成安氏Ⅱ类错牙合深覆盖、深覆牙合的因素之一。

  9. Maloclusiones en niños y adolescentes de caseríos y comunidades nativas de la Amazonía de Ucayali, Perú Malocclusions in children and adolescents from villages and native communities in the Ucayali amazon region in Peru

    Directory of Open Access Journals (Sweden)

    Arón Aliaga-Del Castillo

    2011-03-01

    Full Text Available Se realizó un estudio descriptivo transversal para evaluar la prevalencia de maloclusiones en niños y adolescentes de 2 a 18 años de edad de caseríos y comunidades nativas de la selva de Ucayali, Perú. Se evaluó la presencia de maloclusiones usando la clasificación de Angle así como alteraciones ortodónticas. Se incluyeron 201 sujetos, 106 (52,7% fueron mujeres, la mayoría (54,7% tuvieron entre 6 y 12 años. Se encontró una prevalencia de maloclusiones del 85,6%; la más prevalente según la clasificación de Angle fue la clase I (59,6%. Se evidenciaron alteraciones ortodónticas en el 67,2% de casos. Las alteraciones ortodónticas encontradas más frecuentes fueron apiñamiento dentario (28,4%, mordida cruzada anterior (17,4%, sobresalte exagerado (8,5%, sobremordida exagerada (5,0% y mordida abierta anterior (5,0%. Se evidencia una alta prevalencia de maloclusiones y alteraciones ortodónticas en las comunidades nativas evaluadas, por lo que es necesario implementar programas preventivos para mejorar la salud bucal de estas poblaciones marginadas.We conducted a cross-sectional descriptive study to assess the prevalence of malocclusions in children and adolescents aged 2 to 18 years of villages and native communities of the Ucayali jungle of Peru. We assessed the presence of malocclusions using Angle’s classification and orthodontic changes. We evaluated 201 individuals, 106 (52.7% were women, most of them (54.7% had between 6 and 12 years. The prevalence of malocclusions was 85.6%, the most prevalent according to Angle’s classification was class I (59.6%. Orthodontic alterations were present in 67.2% of cases. The most frequent were dental crowding (28.4%, anterior crossbite (17.4%, exaggerated overjet (8.5%, excessive overbite (5.0% and anterior open bite (5.0%. We found a high prevalence of malocclusion and orthodontic changes in the evaluated native communities, highlighting the need to implement preventive programs to

  10. A growth-related concept for skeletal class II treatment.

    Science.gov (United States)

    Teuscher, U

    1978-09-01

    The use of a combined activator--high-pull headgear appliance for treatment of Class II, Division 1 malocclusion is presented as a preliminary report. The activator itself is equipped with a palatal bar, lower lip pads, and torque-control auxiliaries for the upper incisors. The face-bow is mounted directly on the activator, and the extraoral force vector is equivalent to that of an anterior high-pull vector. During bite registration the veritcal displacement of the mandible is restricted to a minimum, and the anterior displacement should not exceed 6 mm. On the basis of current knowledge of the growth of the bony facial structures, treatment objectives and a specific approach for skeletal Class II correction are defined. Following these objectives, the therapy aims at correcting the malocclusion without diverting the anterior landmarks of the bony face from their specific lines of growth. This is brought about by the corresponding mechanics of the activator-headgear combination. The corrective effect of this appliance may be assumed to be the result of several different factors. The maxillary dentition is restrained in a posterior cranial direction, and an inhibitory effect on the maxilla counter to its line of development is attained. The mandibular dentition is influenced in an anterior downward direction by means of the bite registration, and the occlusion is unlocked during treatment. Any transfer of distally directed headgear forces from the maxilla to the mandible is prevented. Temporary stimulation of condylar growth, possibly combined with temporary posterior deflection of condylar growth, may also be induced. In this way it is possible to take maximum advantage of condylar growth in the sagittal dimension. Thus, not only is the malocclusion corrected but, at the same time, decisive profile improvement is achieved by anterior development of the mandible. From the experience gained so far with a Class II, Division 1 sample undergoing treatment with the

  11. Treating dental crowding with mandibular incisor extraction in an Angle Class I patient

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    Gislana Braga Machado

    2015-06-01

    Full Text Available Mandibular dental crowding often encourages patients to seek orthodontic treatment. The orthodontist should decide between protrusion of incisors or decrease in dental volume so as to achieve proper alignment and leveling. The present study reports the treatment of an Angle Class I malocclusion adolescent female brachyfacial patient with severe mandibular dental crowding, increased curve of Spee and deep overbite. The patient was treated with extraction of a mandibular incisor. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO as a requirement for the title of certified by the BBO.

  12. Treating dental crowding with mandibular incisor extraction in an Angle Class I patient.

    Science.gov (United States)

    Machado, Gislana Braga

    2015-01-01

    Mandibular dental crowding often encourages patients to seek orthodontic treatment. The orthodontist should decide between protrusion of incisors or decrease in dental volume so as to achieve proper alignment and leveling. The present study reports the treatment of an Angle Class I malocclusion adolescent female brachyfacial patient with severe mandibular dental crowding, increased curve of Spee and deep overbite. The patient was treated with extraction of a mandibular incisor. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO) as a requirement for the title of certified by the BBO. PMID:26154463

  13. Distalization of maxillary arch and correction of Class II with mini-implants: A report of two cases

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    Pawankumar Dnyandeo Tekale

    2015-01-01

    Full Text Available This article reports the successful use of mini-screws in the maxilla to treat two patients of age 21-year and 17-year-old girls. Both the patients had a skeletal Class II malocclusion with protrusive maxillary teeth and angels Class II mal-occlusion. Temporary anchorage devices (TADs in the posterior dental region between maxillary second premolar and maxillary first molar teeth on both sides were used as anchorage for the retraction and intrusion of her maxillary anterior teeth. Those appliances, combined with a compensatory curved maxillary archwire, eliminated spacing, deep bite, forwardly placed and proclined upper front teeth and the protrusive profile, corrected the molar relationship from Class II to Class I. With no extra TADs in the anterior region for intrusion, the treatment was workable and simple. The patient received a satisfactory occlusion and an attractive smile. This technique requires minimal compliance and is particularly useful for correcting Class II patients with protrusive maxillary front teeth and dental deep bite.

  14. Effects of long-term treatment with testosterone on weight and waist size in 411 hypogonadal men with obesity classes I-III: observational data from two registry studies

    OpenAIRE

    Saad, F.; Yassin, A; Doros, G; Haider, A

    2015-01-01

    Background/Objectives: Long-term testosterone replacement therapy (TRT) up to 5 years has been shown to produce progressive and sustainable weight loss (WL) in hypogonadal men. This study investigated effects of long-term TRT up to 8 years in hypogonadal men with different obesity classes. Subjects/Methods: From two independent observational registries we identified a total of 411 obese, hypogonadal men receiving TRT in urological clinics. The effects of TRT on anthropometric as well as metab...

  15. 49 CFR 173.468 - Test for LSA-III material.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Test for LSA-III material. 173.468 Section 173.468... SHIPMENTS AND PACKAGINGS Class 7 (Radioactive) Materials § 173.468 Test for LSA-III material. (a) LSA-III Class 7 (radioactive) material must meet the test requirement of paragraph (b) of this section....

  16. The prevalence of malocclusion and orthodontic treatment need among 15-year-old school children in Galle district in Sri Lanka: An epidemiological study

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    Chathurangi Niroshana Gunatissa

    2016-01-01

    Full Text Available Background: To ascertain the prevalence of malocclusion and orthodontic treatment need among 15 year old school children in Galle district in the Southern Province in Sri Lanka. Objective: To ascertain the prevalence of malocclusion and orthodontic treatment need among 15-year-old school children in Galle district in the Southern Province in Sri Lanka. Materials and Methods: A descriptive cross-sectional study was carried out among 802 school children in the Galle district. Multi-stage cluster sampling technique combined with probability proportionate to size method was used to select the sample. Occlusal characteristics including overjet, overbite, crossbites, crowding, and spacing were recorded using a standard pro forma and the need for orthodontic treatment was assessed using the index of orthodontic treatment need dental health component. SPSS 17 for Windows was used to analyze the data. The awareness of malocclusion among the subjects was also assessed. Results: It was observed that the prevalence of malocclusion among the sample was 69.5%, and the overall treatment need was 26.6%.

  17. Prevalence, intensity and extent of Oral Impacts on Daily Performances associated with self-perceived malocclusion in 11-12-year-old children

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    Flores-Mir Carlos

    2007-05-01

    Full Text Available Abstract Background To determine the prevalence, intensity and extent of the Oral Impacts on Daily Performances associated with self-perceived malocclusion among Peruvian schoolchildren. Methods Eight hundred and five children aged 11 to 12 years attending 4 of 7 randomly selected schools linked to a Health Centre in Lima, Peru, participated in the study. The Spanish (PeruChild-OIDP was used to assess the prevalence, intensity and extent of oral impacts on 8 daily performances (eating, speaking, teeth cleaning, sleeping, smiling, studying, emotion and social contact. Self-perceived malocclusion included complaints about position of teeth, spacing of teeth and deformity of mouth or face. The prevalence of oral impacts was compared by covariables using the Chi-square test, whereas the intensity and extent of oral impacts were compared by covariables through the Mann-Whitney test. Results Only 15.5% of children reported impacts associated with self-perceived malocclusion during the last 3 months.