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Sample records for class iii malocclusion

  1. Pseudo Class III malocclusion.

    Science.gov (United States)

    Al-Hummayani, Fadia M

    2016-04-01

    The treatment of deep anterior crossbite is technically challenging due to the difficulty of placing traditional brackets with fixed appliances. This case report represents a none traditional treatment modality to treat deep anterior crossbite in an adult pseudo class III malocclusion complicated by severely retruded, supraerupted upper and lower incisors. Treatment was carried out in 2 phases. Phase I treatment was performed by removable appliance "modified Hawley appliance with inverted labial bow," some modifications were carried out to it to suit the presented case. Positive overbite and overjet was accomplished in one month, in this phase with minimal forces exerted on the lower incisors. Whereas, phase II treatment was performed with fixed appliances (braces) to align teeth and have proper over bite and overjet and to close posterior open bite, this phase was accomplished within 11 month. PMID:27052290

  2. Pseudo Class III malocclusion

    Science.gov (United States)

    Al-Hummayani, Fadia M.

    2016-01-01

    The treatment of deep anterior crossbite is technically challenging due to the difficulty of placing traditional brackets with fixed appliances. This case report represents a none traditional treatment modality to treat deep anterior crossbite in an adult pseudo class III malocclusion complicated by severely retruded, supraerupted upper and lower incisors. Treatment was carried out in 2 phases. Phase I treatment was performed by removable appliance “modified Hawley appliance with inverted labial bow,” some modifications were carried out to it to suit the presented case. Positive overbite and overjet was accomplished in one month, in this phase with minimal forces exerted on the lower incisors. Whereas, phase II treatment was performed with fixed appliances (braces) to align teeth and have proper over bite and overjet and to close posterior open bite, this phase was accomplished within 11 month. PMID:27052290

  3. Orthodontic treatment alternative to a class III subdivision malocclusion

    OpenAIRE

    Guilherme Janson; José Eduardo Prado de Souza; Sérgio Estelita Cavalcante Barros; Pedro Andrade Junior; Alexandre Yudi Nakamura

    2009-01-01

    Class III malocclusions are considered one of the most complex and difficult orthodontic problems to diagnose and treat. Skeletal and/or dental asymmetries in patients presenting with Class III malocclusions can worsen the prognosis. Recognizing the dentoalveolar and skeletal characteristics of subdivision malocclusions and their treatment possibilities is essential for a favorable nonsurgical correction. Therefore, this article presents a nonsurgical asymmetric extraction approach to Class I...

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

    OpenAIRE

    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...

  5. Class III Malocclusion Surgical-Orthodontic Treatment

    Science.gov (United States)

    Furquim, Bruna Alves; de Freitas, Karina Maria Salvatore; Janson, Guilherme; Simoneti, Luis Fernando; de Freitas, Marcos Roberto; de Freitas, Daniel Salvatore

    2014-01-01

    The aim of the present case report is to describe the orthodontic-surgical treatment of a 17-year-and-9-month-old female patient with a Class III malocclusion, poor facial esthetics, and mandibular and chin protrusion. She had significant anteroposterior and transverse discrepancies, a concave profile, and strained lip closure. Intraorally, she had a negative overjet of 5 mm and an overbite of 5 mm. The treatment objectives were to correct the malocclusion, and facial esthetic and also return the correct function. The surgical procedures included a Le Fort I osteotomy for expansion, advancement, impaction, and rotation of the maxilla to correct the occlusal plane inclination. There was 2 mm of impaction of the anterior portion of the maxilla and 5 mm of extrusion in the posterior region. A bilateral sagittal split osteotomy was performed in order to allow counterclockwise rotation of the mandible and anterior projection of the chin, accompanying the maxillary occlusal plane. Rigid internal fixation was used without any intermaxillary fixation. It was concluded that these procedures were very effective in producing a pleasing facial esthetic result, showing stability 7 years posttreatment. PMID:25431691

  6. Archform Comparisons between Skeletal Class II and III Malocclusions

    OpenAIRE

    Zou, Wei; Wu, Jiaqi; Jiang, JiuHui; Xu, Tianmin; Li, CuiYing

    2014-01-01

    The purpose of this cross-sectional research was to explore the relationship of the mandibular dental and basal bone archforms between severe Skeletal Class II (SC2) and Skeletal Class III (SC3) malocclusions. We also compared intercanine and intermolar widths in these two malocclusion types. Thirty-three virtual pretreatment mandibular models (Skeletal Class III group) and Thirty-five Skeletal Class II group pretreatment models were created with a laser scanning system. FA (the midpoint of t...

  7. Class III malocclusion with severe anteroposterior discrepancy

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    Susana Maria Deon Rizzatto

    2012-10-01

    Full Text Available This study aims at reporting the clinical case of a patient with Class III skeletal malocclusion with severe maxillary deficiency, producing a reduced midface associated with severe mandibular prognathism. The pre-surgical orthodontic preparation was composed mainly by dentoalveolar expansion and repositioning of the incisors in the lower arch. Then, a combined maxillary and mandibular orthognathic surgery was performed. The treatment objectives were achieved, with significant improvement in facial esthetics and occlusion, followed by post-treatment stability. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO, as part of the requirements for obtaining the title of Diplomate by BBO.O objetivo deste artigo é relatar o caso clínico de um paciente portador de má oclusão de Classe III esquelética com acentuada deficiência maxilar, causando redução do terço médio da face, associada a severo prognatismo mandibular. O preparo ortodôntico pré-cirúrgico foi composto, principalmente, pela expansão dentoalveolar da maxila e o reposicionamento dos incisivos na arcada inferior. Depois, foi realizada a cirurgia ortognática combinada maxilomandibular. Os objetivos do tratamento foram atingidos, com significativa melhora da oclusão e da estética facial, seguida de estabilidade pós-tratamento. Esse caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, como parte dos requisitos para obtenção do título de Diplomado pelo BBO.

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

    Directory of Open Access Journals (Sweden)

    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.

  9. Skeletal components of class III malocclusions and compensation mechanisms.

    Science.gov (United States)

    Spalj, S; Mestrovic, S; Lapter Varga, M; Slaj, M

    2008-08-01

    The aim of this retrospective study was to assess the skeletal characteristics of sagittal maxillary and mandibular discrepancies resulting in class III malocclusions and compensation mechanisms in one Caucasian European population (Croatian). The study sample included 107 patients (63 females and 44 males), aged between 11 and 18 years of age (mean age 14.6 +/- 2.2), with a class III malocclusion. Forty-three angular and linear measurements were assessed from the pre-treatment lateral cephalographs of each subject. anova, Tukey post hoc and t-test were used for statistical analysis. The most common differential skeletal type was mandibular prognathism with a normal maxilla (43%), followed by maxillary retrognathism with a normal mandibular position (19.6%), while the combination of maxillary retrognathism and mandibular prognathism was found to be rare (Habsburg jaw'. PMID:18699972

  10. 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.

  11. Presence of Third Molar Germs in Orthodontic Patients with Class II/2 and Class III Malocclusions

    OpenAIRE

    Maričić, Barbara Mady; Legović, Mario; Šlaj, Martina; Lapter Varga, Marina; Žuvić Butorac, Marta; Kapović, Miljenko

    2009-01-01

    The aim of this study was to determine the presence of third molar germs in patients with Class II/2 and Class III malocclusions. The study comprised 146 examinees from Zagreb and Istria. Examinees with Class II/2 malocclusions amounted to 77 and those with Class III 69. With regard to development of dentition the examinees were divided into two groups: Group I subjects with early mixed dentition (23 subjects with Class II/2 and 21 subjects with Class III), and Group II subjects with late mix...

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

    OpenAIRE

    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...

  13. A roentgenocephalometric study on the condylar displacement in angle's class I and III malocclusion

    International Nuclear Information System (INIS)

    The purpose of this investigation was to know correlation of mean values between centric occlusion and centric relation by the cephalogram in Angle's Class I and III malocclusion subjects. 22 adults with Angle's Class I malocclusion (17 men and 5 women, 21 to 27 years of age) and 14 adult with Angle's class III malocclusion (10 men and 4 women, 21 to 27 years of age) were selected form the dental students in Yonsei University. Each subject was given two lateral cephalometric radiographics and cephalometric analysis was performed. All data form these analyses was recorded and statistically processed with CYBER computer system. The results were obtained as follows: 1. There was a strong positive correlation between centric occlusion and centric relation in all subjects with Angle's Class I and III malocclusion. 2. In Angle's Class I malocclusion, measurements in lower facial height revealed significant difference between centric occlusion and centric relation (p<0.05). 3.When the mandible was movement was 1.27 mm (0.2-2.8 mm) in Angle's Class I malocclusion, 1.70 mm(0.55-4.15 mm) in Angle's Class III malocclusion, and 1.44 mm (0.2- 4.15 mm) in all subjects.

  14. Treatment Options for Class III Malocclusion in Growing Patients with Emphasis on Maxillary Protraction

    Science.gov (United States)

    Azamian, Zeinab; Shirban, Farinaz

    2016-01-01

    It is very difficult to diagnose and treat Class III malocclusion. This type of malocclusion involves a number of cranial base and maxillary and mandibular skeletal and dental compensation components. In Class III malocclusion originating from mandibular prognathism, orthodontic treatment in growing patients is not a good choice and in most cases orthognathic surgery is recommended after the end of growth. Approximately 30–40% of Class III patients exhibit some degree of maxillary deficiency; therefore, devices can be used for maxillary protraction for orthodontic treatment in early mixed dentition. In cases in which dental components are primarily responsible for Class III malocclusion, early therapeutic intervention is recommended. An electronic search was conducted using the Medline database (Entrez PubMed), the Cochrane Collaboration Oral Health Group Database of Clinical Trials, Science Direct, and Scopus. In this review article, we described the treatment options for Class III malocclusion in growing patient with an emphasis on maxillary protraction. It seems that the most important factor for treatment of Class III malocclusion in growing patient is case selection. PMID:27144056

  15. A radiographic study of temporomandibular joints in skeletal class III malocclusion

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    Kim, Sung Eun; Kim, Kae Duk [Chosun University College of Medicine, Kwangju (Korea, Republic of)

    2003-06-15

    To investigate the differences between the position of the mandibular condyles in temporomandibular joints of patients presenting with normal occlusion and skeletal class III malocclusion. Forty-two subjects with normal occlusion and thirty-seven subjects exhibiting skeletal class III malocclusion prior to orthodontic treatment were included in the study. Transcranial radiographs of each subject were taken at centric occlusion and 1 inch mouth opening. The positional relationship between the mandibular condyles with articular fossae and articular eminences at two positional states were evaluated and analyzed statistically. The mandibular condyles of the skeletal class III malocclusion group were found to be located more anteriorly from the center of the articular fossae compared to the normal occlusion group in centric occlusion. The mandibular condyles of the skeletal Class III malocclusion group were located more superiorly from the middle of articular height than those of the normal occlusion group in centric occlusion. However, these differences were not statistically significant. At 1 inch mouth opening, the mandibular condyles of the skeletal class III malocclusion group were placed more posteriorly from the articular eminences than those of the normal occlusion group. The mean angle of the articular eminence posterior slope were 56.51 .deg. {+-} 6.29 .deg. in the normal occlusion group and 60.37 .deg. {+-} 6.26 .deg. in the skeletal Class III malocclusion group. The mandibular condyles of the skeletal Class III malocclusion group were placed more anteriorly at centric occlusion and more posteriorly at 1 inch mouth opening when compared with those of the normal occlusion group.

  16. A radiographic study of temporomandibular joints in skeletal class III malocclusion

    International Nuclear Information System (INIS)

    To investigate the differences between the position of the mandibular condyles in temporomandibular joints of patients presenting with normal occlusion and skeletal class III malocclusion. Forty-two subjects with normal occlusion and thirty-seven subjects exhibiting skeletal class III malocclusion prior to orthodontic treatment were included in the study. Transcranial radiographs of each subject were taken at centric occlusion and 1 inch mouth opening. The positional relationship between the mandibular condyles with articular fossae and articular eminences at two positional states were evaluated and analyzed statistically. The mandibular condyles of the skeletal class III malocclusion group were found to be located more anteriorly from the center of the articular fossae compared to the normal occlusion group in centric occlusion. The mandibular condyles of the skeletal Class III malocclusion group were located more superiorly from the middle of articular height than those of the normal occlusion group in centric occlusion. However, these differences were not statistically significant. At 1 inch mouth opening, the mandibular condyles of the skeletal class III malocclusion group were placed more posteriorly from the articular eminences than those of the normal occlusion group. The mean angle of the articular eminence posterior slope were 56.51 .deg. ± 6.29 .deg. in the normal occlusion group and 60.37 .deg. ± 6.26 .deg. in the skeletal Class III malocclusion group. The mandibular condyles of the skeletal Class III malocclusion group were placed more anteriorly at centric occlusion and more posteriorly at 1 inch mouth opening when compared with those of the normal occlusion group.

  17. Surgical treatment of dental and skeletal Class III malocclusion

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    Ione Helena Vieira Portella Brunharo

    2013-02-01

    Full Text Available Orthodontic preparation for surgical treatment of skeletal Class III malocclusion involves joint planning with an oral and maxillofacial surgeon to address the functional and esthetic needs of the patient. In order to allow surgical manipulation of the jaws in the preoperative phase, the need to achieve a negative overjet through incisor decompensation often leads the orthodontist to extract the upper first premolars. This report illustrates an orthodontic preparation case where due to specific factors inherent in the patient's psychological makeup retroclination of the upper incisors and proclination of the mandibular incisors was achieved without removing any teeth. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO in partial fulfillment of the requirements for obtaining the BBO Diploma.O preparo ortodôntico para tratamento cirúrgico do padrão esquelético de Classe III envolve o planejamento em conjunto com o cirurgião bucomaxilofacial, com o objetivo de solucionar as necessidades funcionais e estéticas do paciente. A fim de permitir a manipulação cirúrgica das bases ósseas, a obtenção de overjet negativo por meio da descompensação dos incisivos, na fase pré-cirúrgica, leva, com frequência, o ortodontista a optar pela exodontia dos primeiros pré-molares superiores. O presente relato ilustra um caso de preparo ortodôntico no qual, devido a fatores específicos inerentes à questão psicológica da paciente, a retroinclinação dos incisivos superiores e vestibularização dos incisivos inferiores foi realizada sem a remoção de elementos dentários. 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.

  18. 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

  19. 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.

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

    Science.gov (United States)

    Muthukumar, Kirthika; Vijaykumar, N M; Sainath, M C

    2016-01-01

    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. PMID:27041912

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

    Science.gov (United States)

    Florián-Vargas, Karla; Honores, Marcos J. Carruitero; Bernabé, Eduardo; Flores-Mir, Carlos

    2016-01-01

    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. PMID:27275616

  2. 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.

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

    OpenAIRE

    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...

  4. 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.

  5. Early orthopedic correction of skeletal Class III malocclusion using combined reverse twin block and face mask therapy

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    Vinay Kumar Chugh

    2015-01-01

    Full Text Available A 6-year 8-month-old girl presented with a moderate Class III malocclusion characterized by mid-face deficiency and an anterior cross bite. In the first phase, the patient was treated with combination of reverse twin block and facemask therapy. In phase two, fixed appliances were placed in the permanent dentition. The post treatment results were good and a favorable growth tendency could be observed. The correction of the Class III malocclusion occurred by a combination of skeletal and dental improvements. This report shows successful correction of skeletal Class III malocclusion in the early transitional dentition using combination therapy.

  6. A roentgenocephalometric study on the condylar displacement in angle's class I and III malocclusion

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    Lee, Jeong Hwa; Park, Chang Seo [Dept. of Oral Radiology, College of Dentistry, Yonsei University, Seoul (Korea, Republic of)

    1986-11-15

    The purpose of this investigation was to know correlation of mean values between centric occlusion and centric relation by the cephalogram in Angle's Class I and III malocclusion subjects. 22 adults with Angle's Class I malocclusion (17 men and 5 women, 21 to 27 years of age) and 14 adult with Angle's class III malocclusion (10 men and 4 women, 21 to 27 years of age) were selected form the dental students in Yonsei University. Each subject was given two lateral cephalometric radiographics and cephalometric analysis was performed. All data form these analyses was recorded and statistically processed with CYBER computer system. The results were obtained as follows: 1. There was a strong positive correlation between centric occlusion and centric relation in all subjects with Angle's Class I and III malocclusion. 2. In Angle's Class I malocclusion, measurements in lower facial height revealed significant difference between centric occlusion and centric relation (p<0.05). 3.When the mandible was movement was 1.27 mm (0.2-2.8 mm) in Angle's Class I malocclusion, 1.70 mm(0.55-4.15 mm) in Angle's Class III malocclusion, and 1.44 mm (0.2- 4.15 mm) in all subjects.

  7. 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.

  8. 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.

  9. Long-term stability of surgical-orthodontic correction of class III malocclusions with long-face syndrome

    OpenAIRE

    Gallego-Romero, David; Llamas-Carrera, José M.; Torres-Lagares, Daniel; Paredes, Vanessa; Espinar, Eduardo; Guevara, Eduardo; Gutiérrez-Pérez, José L.

    2011-01-01

    Objectives: In the first place, to evaluate skeletal changes of the maxilla and mandible induced by surgical-orthodontic correction of malocclusions class III with long-face syndrome and secondly, to analyze the stability of these skeletal changes in the long term (more than 6 years). Design of Study: A retrospective, unicentric and longitudinal study of 19 patients who had undergone surgical and orthodontic therapy for class III skeletal malocclusion with long-face syndrome was undertaken. A...

  10. Using Networks To Understand Medical Data: The Case of Class III Malocclusions

    OpenAIRE

    Scala, A.; P. Auconi; M. Scazzocchio; Caldarelli, G.; J. A. McNamara; Franchi, L

    2012-01-01

    A system of elements that interact or regulate each other can be represented by a mathematical object called a network. While network analysis has been successfully applied to high-throughput biological systems, less has been done regarding their application in more applied fields of medicine; here we show an application based on standard medical diagnostic data. We apply network analysis to Class III malocclusion, one of the most difficult to understand and treat orofacial anomaly. We ...

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

    OpenAIRE

    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 ...

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

    OpenAIRE

    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 ...

  13. Evaluation of arch width among Class I normal occlusion, Class II Division 1, Class II Division 2, and Class III malocclusion in Indian population

    OpenAIRE

    Dolly Patel; Falguni Mehta; Nimesh Patel; Nishit Mehta; Ipist Trivedi; Apexa Mehta

    2015-01-01

    Objective: To test the hypothesis that there is no difference between Class I (CI) normal occlusion, Class II division 1 (CIId1) and CII division 2 (CIId2), and Class III (CIII) malocclusion with respect to arch widths, width of the maxillary and mandibular arches, gender dimorphism within groups, and gender comparisons. Materials and Methods: Samples of 40 CI subjects, 40 CIId1 subjects, 40 CIId2 subjects, and 34 CIII subjects were studied. All subjects were Indians with no history of or...

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

    Science.gov (United States)

    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

  15. 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.

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

    Science.gov (United States)

    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

  17. 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.

  18. 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.

  19. 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.

  20. Influence of morphological parameters on the development of gingival recession in class III malocclusion.

    Science.gov (United States)

    Warmuz, Justyna; Jagielak, Maciej; Botzenhart, Ute; Seeliger, Julia; Gedrange, Tomasz; Dominiak, Marzena

    2016-07-01

    Cephalometric analysis, including both basic cranio- and gnathometric measurements and detailed evaluation of the construction of skeletal, muscular and mucosal systems combined with estimation of the risk of recession's occurrence, can be used to determine the direction of therapy and ensure appropriate aesthetic-functional effects of treatment. The objective of the present study was to compare the influence of the chosen morphologic parameters on the development of gingival recession in the front part of the jaw in patients with Angle class III. The research material was based on the medical documentation of 1800 patients. Sixty generally healthy patients qualified for the research with prognathism. On the basis of the side-head cephalograms, measurements were carried out to describe the bone structure in the front section of the lower jaw. The lower incisor teeth set-up was also analyzed. Gum recession of the lower incisor teeth was assessed on the basis of the inside-mouth photos of the patients with class III malocclusion. The occurrence of recession in a further 4 patients resulted from such a positioning of the lower teeth. In patients in the first group, treated with complex ortho-surgical treatment, the lower incisor teeth were adjusted much more vertically in the alveola and, thus, recession occurred only in one patient. Complex orthodontic-surgical therapy contributes to recession development to a lesser degree than the sham treatment and makes it a safe alternative therapy in patients with high diathesis for occurrence or progression of an existing recession. PMID:26162503

  1. 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.

  2. Analysis of variation of sagittal position of the jaw bones in skeletal class III malocclusion

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    Stojanović Zdenka

    2012-01-01

    Full Text Available Background/Aim. Skeletal Class III malocclusion is a discrepancy in the sagittal jaw relationship, due to imbalances in their development and/or position, resulting in the dominant appearance of the lower jaw in facial profile. The aim of this study was to determine variations in the sagittal position of the jaw bones to the cranial base in subjects with skeletal Class III, for the earliest possible diagnosis of malocclusion. Methods. Fifty children and as many adults with skeletal Class III, both sexes, were examined and selected, based on the findings of sagittal interjaw relationship (ANB ≤ 0° from the cephalometric analysis of tele-x-ray profile head shots. The subjects were grouped according to age. The first group consisted of children aged 6-12 years, and another group, of adults aged 18-26 years. We measured the angles of maxillary prognathism (SNA, mandibular prognathism (SNB and ANB. Based on these results, within the respective groups subclassification into the subgroups was done, among which a significant difference measured values was evaluated. In both groups a significant correlation of the determined values was evaluated. Results. An average SNA angle ranged 77.36 ± 3.58 in children and 77.32 ± 4.88 in adults, while an average SNB angle was 79.46 ± 3.91 in the group of children and 81.12 ± 3.76 in adults. An average ANB angle was -2.10 ± 2.07 in children, and -4.00 ± 2.34 in adults. In both groups, a significant correlation between the measured values and a significant difference in the values of all the measured parameters were found between patients from different subgroups (p < 0.01. Conclusion. The most common morphological variation of sagittal position of the upper jaw is its retrognatism, which is equally present in both children and adults. Sagittal position of the lower jaw in most of the adults was prognathic, while mandible prognathism in the children was less present.

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

    Science.gov (United States)

    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

  4. 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.

  5. 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.

  6. 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

  7. Má oclusão Classe III de Angle com discrepância anteroposterior acentuada Angle Class III malocclusion with severe anteroposterior discrepancy

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    Carlos Alexandre Câmara

    2010-04-01

    Full Text Available O caso clínico apresentado refere-se ao tratamento de uma paciente com 36 anos, que apresentava uma má oclusão Classe III esquelética e dentária, com ausência dos caninos superiores. Foi realizado um tratamento ortodôntico-cirúrgico combinado, com avanço de maxila (Le Fort 1 e ajustes oclusais nos primeiros pré-molares superiores, que substituíram os caninos. Esse 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 anterossuperior acentuada, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.This case report describes the treatment of a 36-year-old patient who presented a skeletal and dental Class III malocclusion and missing upper canines. The patient was treated with orthosurgical maxillary advancement (Le Fort 1 and occlusal adjustment of the first premolars, which replaced the canines. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO, as representative of Category 4, i.e., malocclusion with severe anteroposterior discrepancy, as part of the requirements for obtaining the BBO Diploma.

  8. Facial and occlusal esthetic improvements of an adult skeletal Class III malocclusion using surgical, orthodontic, and implant treatment

    Science.gov (United States)

    de Almeida Cardoso, Mauricio; de Avila, Erica Dorigatti; Guedes, Fabio Pinto; Battilani Filho, Valter Antonio Ban; Capelozza Filho, Leopoldino; Correa, Marcio Aurelio; Nary Filho, Hugo

    2016-01-01

    The aim of this clinical report is to describe the complex treatment of an adult Class III malocclusion patient who was disappointed with the outcome of a previous oral rehabilitation. Interdisciplinary treatment planning was performed with a primary indication for implant removal because of marginal bone loss and gingival recession, followed by orthodontic and surgical procedures to correct the esthetics and skeletal malocclusion. The comprehensive treatment approach included: (1) implant removal in the area of the central incisors; (2) combined orthodontic decompensation with mesial displacement and forced extrusion of the lateral incisors; (3) extraction of the lateral incisors and placement of new implants corresponding to the central incisors, which received provisional crowns; (4) orthognathic surgery for maxillary advancement to improve occlusal and facial relationships; and finally, (5) orthodontic refinement followed by definitive prosthetic rehabilitation of the maxillary central incisors and reshaping of the adjacent teeth. At the three-year follow-up, clinical and radiographic examinations showed successful replacement of the central incisors and improved skeletal and esthetic appearances. Moreover, a Class II molar relationship was obtained with an ideal overbite, overjet, and intercuspation. In conclusion, we report the successful esthetic anterior rehabilitation of a complex case in which interdisciplinary treatment planning improved facial harmony, provided gingival architecture with sufficient width and thickness, and improved smile esthetics, resulting in enhanced patient comfort and satisfaction. This clinical case report might be useful to improve facial esthetics and occlusion in patients with dentoalveolar and skeletal defects. PMID:26877982

  9. Treatment of skeletal class III malocclusion using face mask therapy with alternate rapid maxillary expansion and constriction (Alt-RAMEC protocol

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    Anand Ramchandra Rathi

    2015-01-01

    Full Text Available Class III malocclusion is very common malocclusion and can be due to maxillary retrusion, mandibular prognathism, or combination. Ellis and McNamara found a combination of maxillary retrusion and mandibular protrusion to be the most common skeletal relationship (30%. The treatment should be carried out as early as possible for permitting normal growth of the skeletal bases. Reverse pull head gear combined with maxillary expansion can effectively correct skeletal Class III malocclusion due to maxillary deficiency in growing patient. An eight-year-old female patient with chief complaint of prognathic mandible and anterior crossbite was successfully treated in duration of 5 months with facemask and expansion therapy based on Alternate Rapid Maxillary Expansion and Constriction (Alt-RAMEC protocol.

  10. Treatment of skeletal class III malocclusion using face mask therapy with alternate rapid maxillary expansion and constriction (Alt-RAMEC) protocol.

    Science.gov (United States)

    Rathi, Anand Ramchandra; Kumari, N Retna; Vadakkepuriyal, Kannan; Santhkumar, Madhu

    2015-01-01

    Class III malocclusion is very common malocclusion and can be due to maxillary retrusion, mandibular prognathism, or combination. Ellis and McNamara found a combination of maxillary retrusion and mandibular protrusion to be the most common skeletal relationship (30%). The treatment should be carried out as early as possible for permitting normal growth of the skeletal bases. Reverse pull head gear combined with maxillary expansion can effectively correct skeletal Class III malocclusion due to maxillary deficiency in growing patient. An eight-year-old female patient with chief complaint of prognathic mandible and anterior crossbite was successfully treated in duration of 5 months with facemask and expansion therapy based on Alternate Rapid Maxillary Expansion and Constriction (Alt-RAMEC) protocol. PMID:26381639

  11. 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

  12. Evaluation depth of the curve of Spee in class I, class II, and class III malocclusion: A cross sectional study

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    Sanjna Nayar

    2015-01-01

    Full Text Available Occlusal plane is an essential consideration when multiple long-span posterior restorations are designed. When restorations are added to an existing tooth arrangement characterized by rotated, tipped, or extruded teeth, excursive interferences may be incorporated, resulting in detrimental squeal. The curve of Spee, which exists in the ideal natural dentition, allows harmony to exist between the anterior tooth and condylar guidance. This curve exists in the sagittal plane and is the best viewed from a lateral aspect. It permits total posterior disclusion on mandibular protrusion, given proper anterior tooth guidance. It is unclear that whether the curve of Spee is a description of the occlusal surface of each arch separately or in maximal intercuspation. The purpose of this study was to examine the differences in the depth of curve of Spee between the class I, class II, class III and to investigate the relationship of depth of curve of Spee with over jet, over-bite.

  13. Orthodontic treatment of a transposed maxillary canine and first premolar in a young patient with Class III malocclusion.

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    Gracco, Antonio; Siviero, Laura; Perri, Alessandro; Favero, Lorenzo; Stellini, Edoardo

    2015-11-01

    A 12-year-old girl was referred to our clinic for evaluation of an unaesthetic dental appearance. All permanent teeth were erupted, while the deciduous maxillary right canine was retained. Cone-beam computed tomography revealed a complete transposition of the maxillary left canine and first premolar involving both the crowns and the roots. Initial cephalometric analysis showed a skeletal Class III pattern, with a slight maxillary retrusion and a compensated proclination of the upper incisors. The patient's teeth were considered to be in the correct position; therefore, we decided to attempt treatment by correcting the transposition and using only orthodontic compensation of the skeletal Class III malocclusion. After 25 months of active orthodontic treatment, the patient had a Class I molar and canine relationship on both sides, with ideal overbite and overjet values. Her profile was improved, her lips were competent, and cephalometric evaluation showed acceptable maxillary and mandibular incisor inclinations. The final panoramic radiograph showed that good root parallelism was achieved. Two-year follow-up intraoral photography showed stable results. PMID:26629478

  14. 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.

  15. 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

  16. 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.

  17. 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.

  18. Management of skeletal class III malocclusion with a palatally impacted cuspid

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    Chris HN Chang

    2012-01-01

    Maintain the A-P position of the maxilla.Extrude lower molars to open the VDO by clockwise rotation to effectively retract the mandible relative to the maxilla.Retract the mandibular incisors.Correct the anterior X-bite and align the midlinesEstablish a normal overjet and overbite in a mutually protected, Class I occlusion.Retract lower lip to improve facial balance 0.022-in Damon D3® (standard torque and Inspire Ice® brackets ( Ormco were used. The simplicity of mechanics is illustrated

  19. 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.

  20. Evaluation of the dental arch asymmetry in natural normal occlusion and Class II malocclusion individuals

    OpenAIRE

    Paulo Estevão Scanavini; Luiz Renato Paranhos; Fernando César Torres; Maria Helena Ferreira Vasconcelos; Renata Pilli Jóias; Marco Antonio Scanavini

    2012-01-01

    OBJECTIVE: To verify the presence and degree of asymmetry of dental arches in Brazilian individuals with natural normal occlusion and Class II, Divisions 1 and 2 malocclusions. METHODS: The study evaluated the symmetry of the maxillary and mandibular dental arches of 180 pairs of dental casts, divided into: Group I = 60 pairs of natural normal occlusion individuals; Group II = 60 pairs of Class II, Division 1 malocclusion individuals; and Group III = 60 pairs of Class II, Division 2 malocclus...

  1. 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.

  2. 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...

  3. 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

  4. 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

  5. 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...

  6. Evaluation of the dental arch asymmetry in natural normal occlusion and Class II malocclusion individuals

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    Paulo Estevão Scanavini

    2012-02-01

    Full Text Available OBJECTIVE: To verify the presence and degree of asymmetry of dental arches in Brazilian individuals with natural normal occlusion and Class II, Divisions 1 and 2 malocclusions. METHODS: The study evaluated the symmetry of the maxillary and mandibular dental arches of 180 pairs of dental casts, divided into: Group I = 60 pairs of natural normal occlusion individuals; Group II = 60 pairs of Class II, Division 1 malocclusion individuals; and Group III = 60 pairs of Class II, Division 2 malocclusion individuals. A device was used to measure dental midline deviation and the canine tip in the dental arches (in degrees. It was also verified the distance of the upper canines from the palatal suture, intercanine distance, and anteroposterior upper and lower first molar position. RESULTS: Dental arches of individuals from all groups presented asymmetry, regardless of the presence of malocclusion. Group I showed a lower asymmetry degree in relation to Groups II and III. The asymmetry in Groups II and III was similar. CONCLUSION: The dental arches of individuals with natural normal occlusion and with Class II, Division 1 and Division 2 malocclusions showed asymmetry. The asymmetry degree was higher in the mandibular dental arches than in the maxillary dental arches in all 3 evaluated groups.

  7. Angle Class I malocclusion with anterior negative overjet

    Science.gov (United States)

    de Souza, Paulo Ávila

    2016-01-01

    ABSTRACT This clinical case report describes the orthodontic treatment of an 8-year and 9-month old female patient with Angle Class I malocclusion, anterior crossbite and canine Class III relationship. Orthodontic treatment was carried out in two stages. The first one was orthopedic, while the second one included the use of a fixed appliance and the need for space gain for reshaping of maxillary lateral incisors. The two-stage treatment combined with multidisciplinary Restorative Cosmetic Dentistry allowed excellent esthetic and functional outcomes to be achieved. 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:27275622

  8. 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...

  9. Morphometric analysis of treatment effects of bone-anchored maxillary protraction in growing Class III patients

    OpenAIRE

    Baccetti, T.; Clerck, H.J. de; Cevidanes, L. H.; Franchi, L

    2010-01-01

    The aim of the present morphometric investigation was to evaluate the effects of bone-anchored maxillary protraction (BAMP) in the treatment of growing patients with Class III malocclusion. The shape and size changes in the craniofacial configuration of a sample of 26 children with Class III malocclusions consecutively treated with the BAMP protocol were compared with a matched sample of 15 children with untreated Class III malocclusions. All subjects in the two groups were at a prepubertal s...

  10. 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...

  11. Treatment of Class II Division 1 Malocclusion using Cervical Headgear

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    Priska Lestari Hendrawan

    2013-07-01

    Full Text Available Class II division 1 malocclusions have many variation and treatment options. Choosing the right treatment begins with a correct diagnosis. The aim of this article is to describe treatment of Class II division 1 malocclusion in a growing patient using combined cervical headgear and non-extraction fixed orthodontic therapy. Class I molar and canine relationship was achieved with normal overbite and overjet. There is improvement in jaw relationship and facial profile. This correction was achieved by downward displacement and inhibition of the forward growth of maxilla with favorable growth of mandible, upper molar distalization and retraction of upper incisors from cervical headgear use. There was neither downward rotation of the mandible nor maxillary first molar extrusion. Treatment time, favorable mandibular growth pattern and patient compliance proved to be determining factors in the success of this treatment.DOI: 10.14693/jdi.v16i3.106

  12. Non-extraction treatment of skeletal class II malocclusion

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    Abhay K Jain

    2012-01-01

    Full Text Available Introduction: Every orthodontist at some point in his clinical practice has faced the dilemma of how ′best′ to manage a mild to moderate Class II malocclusion. Aims and Objectives: To demonstrate the efficacy of Forsus™ Fatigue Resistant Device in the management of Class II malocclusion. Materials and Method: A patient having Class II division 1 malocclusion with functional jaw retrusion was treated using MBT 0.022" prescription and Forsus FRD appliance. Pre- and post-treatment photographs and lateral cephalograms were taken. Cephalometric analysis was done, and results were superimposed. Result: 7-8 months of Forsus wear obtained stable and successful results with improvement in facial profile, skeletal jaw relationship, and mild increase in IMPA. Discussion and Conclusion: Greater forward displacement of the mandible was the predominant factor for successful treatment Class II patient. Forsus gives good results for class II management, and it would be wise to consider treating such cases by non-extraction approach rather than contemplating extractions.

  13. 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...

  14. 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.

  15. Dentofacial characteristics of patients with Angle Class I and Class II malocclusions

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    Rogério Lacerda dos Santos

    2012-04-01

    Full Text Available OBJECTIVE: The present study assessed some cephalometric measurements of the soft tissue profile in order to observe the behavior of facial convexity in patients with Class I, Class II division 1, and Class II division 2 malocclusions. METHODS: One hundred and thirty pre-treatment teleradiographs of Caucasian patients aged 10-16 years (mean age of 12.6 years were selected for study and divided into 3 groups. The cephalometric measurements used in the present study were the following: H.SN, Cx, NLA, MLA, UL-SUL-S, LL-S, IMPA, and 1-SN. Analysis of variance and Tukey's test were applied for measurements H.SN, Cx, IMPA, 1-SN, MLA, and NLA, whereas Kruskal-Wallis and Dunn's tests were applied for UL-S and LL-S. RESULTS: The results showed statistically significant differences for the measurements H.SN, Cx, UL-S, and IMPA between Groups I, II-1 and II-2 (p < 0.05. Measurements LL-S and MLA showed statistically significant difference between Groups I and II-1 only (p < 0.05. On the other hand, no statistically significant differences were found for measurement NLA among the 3 groups (p < 0.05. CONCLUSION: Regarding facial characteristics expressed by measurements H.SN, Cx, and UL-S, one could conclude that Class II division 1 and Class II division 2 malocclusions, both differed from Class I malocclusion. In addition, Class II division 1 malocclusion was found to have facial characteristics expressed by MLA, which differentiate it from the Class II division 2 and Class 1 malocclusions. Class I, Class II division 1 and Class II division 2 malocclusions showed no difference in facial characteristics expressed by the measurement NLA, and measurement LL-S was directly related to eversion of the lower lip.

  16. 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.

  17. 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.

  18. 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...

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

    OpenAIRE

    Silva, Nayanna Nadja e; Rosa Helena Wanderley Lacerda; Alexandre Wellos Cunha Silva; Tania Braga Ramos

    2015-01-01

    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 o...

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

    OpenAIRE

    Silva, Nayanna Nadja e; Lacerda, Rosa Helena Wanderley; Silva, Alexandre Wellos Cunha; Ramos, Tania Braga

    2015-01-01

    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...

  1. 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

  2. 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.

  3. Maxillary canine-first premolar bilateral transposition in a Class III patient: A case report.

    Science.gov (United States)

    Potrubacz, Maciej Iancu; Tepedino, Michele; Chimenti, Claudio

    2016-05-01

    Tooth transposition is a rare dental anomaly that often represents a challenge for the clinician. The case of a girl with skeletal Class III malocclusion and concomitant maxillary canine-first premolar bilateral transposition, followed from 7 to 17 years of age, is presented. After a first phase of treatment aimed at resolving the Class III malocclusion, the transposition was maintained and the case finalized with a multibracket appliance. PMID:26280661

  4. Dentofacial characteristics of patients with Angle Class I and Class II malocclusions

    OpenAIRE

    Rogério Lacerda dos Santos; Antônio Carlos de Oliveira Ruellas

    2012-01-01

    OBJECTIVE: The present study assessed some cephalometric measurements of the soft tissue profile in order to observe the behavior of facial convexity in patients with Class I, Class II division 1, and Class II division 2 malocclusions. METHODS: One hundred and thirty pre-treatment teleradiographs of Caucasian patients aged 10-16 years (mean age of 12.6 years) were selected for study and divided into 3 groups. The cephalometric measurements used in the present study were the following: H.SN, C...

  5. 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.

  6. Long-term pharyngeal airway changes after bionator treatment in adolescents with skeletal Class II malocclusions

    OpenAIRE

    Han, Seimin; Choi, Yoon Jeong; Chung, Chooryung J.; Kim, Ji Young; Kim, Kyung-Ho

    2014-01-01

    Objective The aim of this study was to evaluate long-term changes in the pharyngeal airway dimensions after functional appliance treatment in adolescents with skeletal Class II malocclusions. Methods Pharyngeal airway dimensions were compared between subjects with skeletal Class II malocclusions (n = 24; mean age: 11.6 ± 1.29 years) treated with a Class II bionator and age-matched control subjects with skeletal Class I occlusions (n = 24; mean age: 11.0 ± 1.21 years) using a series of lateral...

  7. 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.

  8. Association of Dental Anomalies with Different Types of Malocclusions in Pretreatment Orthodontic Patients

    OpenAIRE

    Dwijendra, K S; Parikh, Vishal; George, Soja Sara; Kukkunuru, Gururam Tej; Chowdary, Gali Nagarjuna

    2015-01-01

    Background: The study is planned to correlate the existence of dental anomalies with different types of malocclusion as the occurrence of anomalies is common in malocclusion. Materials and Methods: The present study was conducted among 430 patients with different types of malocclusion as 161 patients having Class I, 203 with Class II, and 66 with Class III malocclusion. The age of the patients ranged from 12 to 15 years. Diagnosis was done on the basis of history, clinical, cephalometric, rad...

  9. 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.

  10. 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.

  11. 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. PMID:22196191

  12. Stability of molar relationship after non-extraction Class II malocclusion treatment

    OpenAIRE

    Darwin Vaz de Lima; Karina Maria Salvatore de Freitas; Marcos Roberto de Freitas; Guilherme Janson; José Fernando Castanha Henriques; Arnaldo Pinzan

    2013-01-01

    OBJECTIVE: This study aimed to evaluate the stability of molar relationship after non-extraction treatment of Class II malocclusion. METHODS: The sample comprised 39 subjects (16 females, 23 males) with initial Class II malocclusion treated with no extractions, using fixed appliances. Mean age at the beginning of treatment was 12.94 years, at the end of treatment was 15.14 years and at post-retention stage was 21.18 years. Mean treatment time was 2.19 years and mean time of post-treatment eva...

  13. The Role of Malocclusion in Individuals with Temporomandibular Joint Disorders

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    Munire Ece Sabah

    2002-01-01

    Full Text Available The percentage of patients was determined in normal population and amongst different malocclusion groups. The study was conducted on 68 patients of which 34 had temporomandibular disorders. The percentage of individuals without any problem relating their jaw joints, mostly belong to the Class I / normal malocclusion group while the patients in the temporomandibular disorders group show some inclination to Class II Division 2 and Class III Angle malocclusions.

  14. The Role of Malocclusion in Individuals with Temporomandibular Joint Disorders

    OpenAIRE

    Munire Ece Sabah

    2002-01-01

    The percentage of patients was determined in normal population and amongst different malocclusion groups. The study was conducted on 68 patients of which 34 had temporomandibular disorders. The percentage of individuals without any problem relating their jaw joints, mostly belong to the Class I / normal malocclusion group while the patients in the temporomandibular disorders group show some inclination to Class II Division 2 and Class III Angle malocclusions.

  15. 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.

  16. 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.

  17. Management of severe class II division II malocclusion using simplified MPA - A case report

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    Yugandhar Garlapati

    2013-01-01

    Full Text Available A fully established Class II Div. II malocclusion case with severe mandibular deficiency treated with simplified mandibular protraction appliance (MPA along with Begg′s looped archwire is presented. This type of case with antero-posterior and vertical skeletal dysplasia demands correction of the underlying skeletal malocclusions in growing patients. The task becomes very daunting especially in patients with skeletal deep bite with retroclined upper incisors. One such case treated to produce optimal skeletal and dentoalveolar relationship with the help of a fixed functional device is illustrated in this case report.

  18. 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

  19. 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.

  20. 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

  1. 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...

  2. 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.

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

    OpenAIRE

    Rashmi Bhat; Ravi M. Subrahmanya

    2014-01-01

    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 w...

  4. Maxillary first molar extraction in Class II malocclusion: Follow-up studies on treatment effects

    OpenAIRE

    Livas, Christos

    2015-01-01

    This PhD research investigated treatment effects of extraction of one and two maxillary first molars in Class II subdivision and Class II/1 malocclusion cases respectively from a longer time perspective. Private practice records were scrutinized to evaluate aspects of a treatment technique combining maxillary first molar extraction(s) and Begg brackets; outcome stability, influence on the position of maxillary third molars, interference of adjacent anatomical structures in closing extraction ...

  5. Dental and orthopedic effects of Bass and Herbst therapy for correction of severe class II division 1 malocclusions

    OpenAIRE

    Ömblus, Jane

    1996-01-01

    Ömblus J (1996). Dental and orthopedic effects of Bass and Herbst therapy for correction of severe Class 1I division l malocclusions. Thesis, Karolinska Institutet. Functional appliance therapy to correct Class II division I malocclusions has been a subject of debate throughout this century. The aims of this thesis, based on six publications, were to evaluate the dental and orthopedic effects of Bass appliance therapy in relation to treatment intensity, age, an...

  6. 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.

  7. 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...

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

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    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.

  9. Alveolar bone thickness and lower incisor position in skeletal Class I and Class II malocclusions assessed with cone-beam computed tomography

    OpenAIRE

    Baysal, Asli; Ucar, Faruk Izzet; Buyuk, Suleyman Kutalmis; Ozer, Torun; Uysal, Tancan

    2013-01-01

    Objective To evaluate lower incisor position and bony support between patients with Class II average- and high-angle malocclusions and compare with the patients presenting Class I malocclusions. Methods CBCT records of 79 patients were divided into 2 groups according to sagittal jaw relationships: Class I and II. Each group was further divided into average- and high-angle subgroups. Six angular and 6 linear measurements were performed. Independent samples t-test, Kruskal-Wallis, and Dunn post...

  10. 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.

  11. 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...

  12. Orthodontic Camouflage Treatment in an Adult Patient with a Class II, Division 1 Malocclusion – A Case Report

    OpenAIRE

    Naragond, Appasaheb; Kenganal, Smitha; Sagarkar, Roshan; Sugaradday,

    2012-01-01

    Since so many decades, various treatment modalities have been presented for the treatment for the class II, div 1 malocclusions. In recent times, we have seen enormously increasing numbers of young adults who desire the shortest, cost effective and a non surgical correction of Class II malocclusions and they accept dental camouflage as a treatment option to mask the skeletal discrepancy. This case report presents one such case of a 22 year old non-growing female who had a skeletal Class II, d...

  13. 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.

  14. 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.

  15. 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.......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....

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

    Directory of Open Access Journals (Sweden)

    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.

  17. Evaluation of dentoskeletal effects of Farmand functional appliance (Fa II on class II malocclusion

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    Yassaei S.

    2007-07-01

    Full Text Available Background and Aim: Functional appliances refer to a variety of removable or fixed appliances designed to alter the mandibular position both sagitally and vertically, resulting in orthodontic and orthopedic changes. Despite the long history of functional appliances, there is still much controversy related to their effectiveness and mode of action. The aim of this study was to evaluate dental and skeletal effects of Fa II in patients with class II malocclusion due to mandibular deficiency.Materials and Methods: In this before-after clinical trial, 35 patients with class II div I malocclusion were selected. These samples were under treatment with Fa II appliance for 11 months. The range of age of females was 10-13 years and males 11-14 years. Combination analysis was used to determine skeletal and dental effects. Paired t-test was used to compare the differences of mean value pre and post treatment. P<0.05 was considered as the level of significance. Results: There was significant difference between pre and post treatment in respect to posterior and anterior facial height, eruption of upper and lower posterior teeth, eruption of upper anterior teeth, mandibular body length, ANB angle, IMPA and 1 to SN. No significant difference was observed between pre and post treatment regarding facial growth.Conclusion: Treatment with Fa II functional appliance leads to significant alterations in dental and skeletal elements of craniofacial complex and improvement of dental and jaws relationship.

  18. 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

  19. 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.

  20. 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

  1. 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.

  2. 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.

  3. Twenty -year post-treatment assessment of class II division 1 malocclusion treated with non-extraction approach

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    Ashok Karad

    2013-01-01

    This article describes twenty-year post-treatment assessment of a class II division 1 malocclusion case, treated in the late mixed dentition stage, with the non-extraction treatment approach - molar-inserted headgear along with a fixed appliance therapy.

  4. 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.

  5. Study of the number of occlusal contacts in maximum intercuspation before orthodontic treatment in subjects with Angle Class I and Class II Division 1 malocclusion

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    Gustavo Adolfo Watanabe-Kanno

    2012-02-01

    Full Text Available OBJECTIVE: Define and compare numbers and types of occlusal contacts in maximum intercuspation. METHODS: The study consisted of clinical and photographic analysis of occlusal contacts in maximum intercuspation. Twenty-six Caucasian Brazilian subjects were selected before orthodontic treatment, 20 males and 6 females, with ages ranging between 12 and 18 years. The subjects were diagnosed and grouped as follows: 13 with Angle Class I malocclusion and 13 with Angle Class II Division 1 malocclusion. After analysis, the occlusal contacts were classified according to the established criteria as: tripodism, bipodism, monopodism (respectively, three, two or one contact point with the slope of the fossa; cuspid to a marginal ridge; cuspid to two marginal ridges; cuspid tip to opposite inclined plane; surface to surface; and edge to edge. RESULTS: The mean number of occlusal contacts per subject in Class I malocclusion was 43.38 and for Class II Division 1 malocclusion it was 44.38, this difference was not statistically significant (p>0.05. CONCLUSIONS: There is a variety of factors that influence the number of occlusal contacts between a Class I and a Class II, Division 1 malocclusion. There is no standardization of occlusal contact type according to the studied malocclusions. A proper selection of occlusal contact types such as cuspid to fossa or cuspid to marginal ridge and its location in the teeth should be individually defined according to the demands of each case. The existence of an adequate occlusal contact leads to a correct distribution of forces, promoting periodontal health.

  6. Cephalometric assessment of vertical control in the treatment of class II malocclusion with a combined maxillary splint

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    Ivana Uglik Garbui

    2010-03-01

    Full Text Available Vertical control is one of the primary objectives sought by orthodontists when treating malocclusions in hyperdivergent individuals. This investigation aimed at assessing vertical control, by cephalometric measurements, during the treatment of Angle Class II Division 1 malocclusion. Thirty cases, selected from the files of the São Leopoldo Mandic Dental Research Center, Brazil, of subjects with Angle Class II Division 1 malocclusion and facial hyperdivergence, were used in this study. The patients were treated using a combined extraoral appliance during a mean treatment time of 1.1 years. Pre- and posttreatment cephalometric measurements were compared to assess vertical control. The results were submitted to ANOVA (p = 5%. The ANOVA test revealed no statistically significant difference between the pretreatment and posttreatment values of OP (Occlusal plane angle and SN.MP. While there was a decrease in Y-axis, FMA, and PP.MP, there was an increase in SN.PP, Co-Go, AFH, PFH, and FHI. It was concluded that the divergence in the facial lower third of the patients did not increase, suggesting that the combined extraoral appliance with the line of force application directed to the resistance center of the maxilla was effective in treating Angle Class II malocclusion in hyperdivergent subjects.

  7. 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.

  8. Association between Bolton discrepancy and Angle malocclusions

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    Rodrigo Hermont CANÇADO

    2015-01-01

    Full Text Available This study aimed to assess and compare the overall and anterior ratios of tooth size discrepancies in all Angle malocclusion groups. The following null hypothesis (H0 was tested: no difference between tooth size discrepancies (overall and anterior would be observed among Angle malocclusion groups. The sample comprised of 711 pre-orthodontic treatment study casts of Brazilian patients with a mean age of 17.42 years selected from private practices in Brazil. The casts were divided into 3 groups according to the type of malocclusion: Class I (n = 321, Class II (n = 324, and Class III patients (n = 66. The measurement of the greatest mesiodistal width of the teeth was performed using a centesimal precision digital caliper directly on the study casts, from the distal surface of the left first molar to the distal surface of the right first molar. The overall and anterior ratios between the maxillary and mandibular teeth were evaluated using Bolton’s method. The following statistical tests were applied: chi-square, independent t-test, and one-way ANOVA. Results showed that all Angle malocclusions groups exhibited a ratio compatible with those recommended by Bolton. With respect to the overall and anterior ratios among the malocclusion groups, no statistically significant differences were found. The null hypothesis was accepted because the results showed no differences in the overall and anterior ratios of tooth size discrepancies among different Angle malocclusion groups.

  9. 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 ...

  10. Radiographic cephalometric study using Ricketts analysis for dentoskeletal patterns evaluation of patients having class II, division I malocclusion treated during mixed dentition period

    International Nuclear Information System (INIS)

    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

  11. The distribution of cervical vertebrae anomalies among dental malocclusions

    OpenAIRE

    Hasan Kamak; Eren Yildirim

    2015-01-01

    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. De...

  12. 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

  13. 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)

  14. Facial soft tissue thickness among skeletal malocclusions: is there a difference?

    OpenAIRE

    Kamak, Hasan; Celikoglu, Mevlut

    2012-01-01

    Objective The purpose of this study was to determine the soft tissue thickness of male and female orthodontic patients with different skeletal malocclusions. Methods Soft tissue thickness measurements were made on lateral cephalometric radiographs of 180 healthy orthodontic patients with different skeletal malocclusions (Class I: 60 subjects, Class II: 60 subjects, Class III: 60 subjects). Ten measurements were analyzed. For statistical evaluation, one-way ANOVA and Kruskal-Wallis tests were ...

  15. Assessing Angle's malocclusion among cleft lip and/or palate patients in Jammu

    OpenAIRE

    Gupta, Akshay; Gupta, Anur; Bhardwaj, Amit; Vikram, S.; Gomathi, Ajeetha; Singh, Karanprakash

    2016-01-01

    Objective: The study was conducted to examine the patients with abnormalities of cleft lip and/or palate and its association with different types of malocclusion. Materials and Methods: This descriptive study was done among 168 patients with abnormalities of cleft lip and/or palate. Angle's classification of malocclusion was applied for assessment of occlusion as Class I, Class II, and Class III. The types of oral clefts classification such as cleft lip unilateral and cleft lip bilateral, cle...

  16. Changes in Cranial Base Morphology in Class I and Class II Division 1 Malocclusions

    OpenAIRE

    Agarwal, Anirudh; Pandey, Harsh; Bajaj, Kamal; Pandey, Lavesh

    2013-01-01

    Introduction: The cranial base plays a key role in craniofacial growth; it helps to integrate spatially and functionally different patterns of growth in various adjoining regions of the skull such as components of the brain, the nasal and oral cavity and the pharynx. The aim of this study was to evaluate the difference in cranial base flexure between skeletal and dental Class I and Class II division 1.

  17. Morphology of the temporomandibular joint in skeletal class iii symmetrical and asymmetrical cases: a study by cephalometric laminography.

    Science.gov (United States)

    Akahane, Y; Deguchi, T; Hunt, N P

    2001-06-01

    The aetiology of asymmetric growth in the mandible is not well understood. Previous studies have indicated that the functional lateral shift of the mandible in the period of prepubertal growth may translate to a true skeletal asymmetry, exclusively in skeletal Class III malocclusion. This asymmetry develops more characteristic features during the pubertal and post-pubertal growth periods. Early correction of a functional lateral shift of the mandible is recommended. The purpose of this study was to examine the relationship between the morphology of the temporomandibular joints and asymmetry in skeletal Class III malocclusion in adult female patients. Cephalometric and laminographic findings in 36 asymmetric skeletal Class III patients with a lateral shift of mandible (group 3) were compared to those of 25 symmetric skeletal Class I patients (group 1) and the same number of symmetric skeletal Class III malocclusions (group 2). All the patients had received no orthodontic treatment. The results showed that the TMJ of the side to which the mandible shifted showed a significantly narrower and shorter shape of the condyle head, smaller superior condylar space, and steeper eminence than those of the unshifted side. PMID:11395526

  18. 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.

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

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    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.

  20. 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.

  1. 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.

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

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    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

  3. Malocclusion Pattern (Angle's) in Mauritian Orthodontic Patients

    Science.gov (United States)

    Durgesh, B. H.; Prakash, Prashanth; Ramakrishnaiah, Ravikumar; Subashchandra Phulari, Basavaraj; Al Kheraif, Abdul Aziz A.

    2012-01-01

    The aim of the study was to assess the pattern of malocclusion in different ethnic group of Mauritian population visiting the Orthodontic Department at Mauras College of Dentistry and Hospital, Republic of Mauritius. The study population comprised of 624 patients who visited the orthodontic department during 2010. The clinical examination was conducted by a well-calibrated orthodontist. The data were recorded in the case sheets and was analyzed for presence of angles class I, class II, and class III malocclusion in both male and female patients of Asian, African, Caucasian, and Chinese ethnicity aged 5–55 years. Malocclusion was found to be high in females compared to males. 414 patients (150 male + 264 female) presented with class I, 182 patients (52 male + 130 female) presented with class II, and 28 patients (12 male + 16 female) presented with class III. Asian ethnic group were more affected and patient seeking orthodontic treatment was high in 11–15 years age group. PMID:22655203

  4. Sınıf III malokluzyonlarında uygulanan tedavi sistemleri

    OpenAIRE

    Burcu Balos Tuncer

    2011-01-01

    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...

  5. Sınıf III malokluzyonlarında uygulanan tedavi sistemleri

    OpenAIRE

    Balos Tuncer, Burcu

    2011-01-01

    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 effec...

  6. Comparison of Natural Head Position in Different Anteroposterior Malocclusions

    OpenAIRE

    Zohreh Hedayati; Maryam Paknahad; Farbod Zorriasatine

    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 t...

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

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    Mônica Costa Armond

    2012-04-01

    Full Text Available 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.

  8. Assessing Angle's malocclusion among cleft lip and/or palate patients in Jammu

    Science.gov (United States)

    Gupta, Akshay; Gupta, Anur; Bhardwaj, Amit; Vikram, S.; Gomathi, Ajeetha; Singh, Karanprakash

    2016-01-01

    Objective: The study was conducted to examine the patients with abnormalities of cleft lip and/or palate and its association with different types of malocclusion. Materials and Methods: This descriptive study was done among 168 patients with abnormalities of cleft lip and/or palate. Angle's classification of malocclusion was applied for assessment of occlusion as Class I, Class II, and Class III. The types of oral clefts classification such as cleft lip unilateral and cleft lip bilateral, cleft palate (CP), unilateral cleft lip with palate (UCLP) and bilateral cleft lip with palate (BCLP) was considered. Chi-square test was applied to analyze the data at P clefts patients as cleft lip (81), CP (31), and both cleft lip and palate (53). The occurrence of unilateral cleft lip (44) was maximum among the sample followed by UCLP (39), and bilateral cleft lip (31). Maximum subjects with Class II (10.7%) and Class III (4.9%) malocclusion were seen with unilateral cleft lip deformities. None of the patients with UCLP had Class III malocclusion. Conclusion: Cleft lip was the most commonly observed deformity and high frequency of Class II and III malocclusion was evident. Therefore, patients with such abnormalities should be screened timely. PMID:27195223

  9. 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

  10. 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

  11. 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...

  12. 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

  13. 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

  14. Determination of the relative parallelism of occlusal plane to three ala-tragal lines in various skeletal malocclusions: A cephalometric study

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    Shashinandan K Venugopalan

    2012-01-01

    Results: The result from the present study showed that in Class I and Class III malocclusion, the line drawn from the lower border of ala of the nose to the inferior position of the tragus (Camper′ plane C was relatively parallel to occlusal plane; and, in Class II malocclusion, the line drawn from the lower border of ala of nose to middle border of tragus (Camper′s plane B was relatively parallel to occlusal plane.

  15. Three-dimensional dental arch changes of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusion

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    Adriano Porto Peixoto

    2014-08-01

    Full Text Available INTRODUCTION: This study assessed the three-dimensional changes in the dental arch of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusions at three different periods. METHODS: Landmarks previously identified on upper and lower dental casts were digitized on a three-dimensional digitizer MicroScribe-3DX and stored in Excel worksheets in order to assess the width, length and depth of patient's dental arches. RESULTS: During orthodontic preparation, the maxillary and mandibular transverse dimensions measured at the premolar regions were increased and maintained throughout the follow-up period. Intercanine width was increased only in the upper arch during orthodontic preparation. Maxillary arch length was reduced during orthodontic finalization, only. Upper and lower arch depths were stable in the study periods. Differences between centroid and gingival changes suggested that upper and lower arch premolars buccaly proclined during the pre-surgical period. CONCLUSIONS: Maxillary and mandibular dental arches presented transverse expansion at premolar regions during preoperative orthodontic preparation, with a tendency towards buccal tipping. The transverse dimensions were not altered after surgery. No sagittal or vertical changes were observed during the follow-up periods.

  16. Assessment of maxillary and mandibular incisors inclination in individuals with class II division 1 malocclusion, according to the facial pattern

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    Aldrieli Regina AMBROSIO

    2009-12-01

    Full Text Available Introduction and objective: The aim of this study was tocephalometrically evaluate the maxillary and mandibular incisorsinclination in individuals with Angle class II division 1 malocclusion,and then correlate these incisor inclinations with the facial pattern. Material and methods: The sample consisted of 44 individuals with ages ranging from 7 years and 11 months to 14 years old, divided into three groups based on the different facial patterns: brachyfacial,mesofacial and dolichofacial. The maxillary incisors inclination was evaluated using the 1.NA angle; the mandibular incisors inclination was evaluated considering –1.NB and IMPA angles. Interincisal angle was also measured (1.––1. After measuring, data were submitted to analysis of variance. Tukey’s test (alpha = 0.05 was applied to identify in which facial patterns existed difference. Results and conclusion: It was observed that only the IMPA angle measures showed statistically significant differences between its mean values according to facial pattern (p ≤ 0.05. It is concluded that mandibular and maxillary incisors were correctly positioned, considering NA and NB angles respectively. It was not possible to correlate the incisor inclinations to the facial pattern of the subjects. A positive correlation exists between mandibular incisors inclination related to Tweed’s mandibular plane (IMPA and the facial pattern of the subjects. Furthermore, the interincisal angle was slightly decreased when compared to the normal values.

  17. 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

  18. Cephalometric assessment of maxillary length in Serbian children with skeletal class III

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    Stojanović Zdenka

    2013-01-01

    Full Text Available Background/Aim. Malocclusion of skeletal class III is a complex irregularity of sagittal inter-jaw relationship, which is due to irregularities of sagittal position of one or both of the jaw bones, which is often associated with disproportionate ratio of their length. The aim of this study was to determine whether the length of the jaw of children with skeletal class III in the period of mixed dentition was changed. Methods. Fifty children with skeletal class III and the same number of those with skeletal class I, of both sexes, have been selected on the basis of cephalometric analysis of profile tele-x-ray of the head. All the children aged 6-12 had mixed dentition, and were divided according to sex and age into three subgroups within each group. The length of maxilla, mandible and cranial base were measured. Proportions among the lengths measured within each group were found and difference significance in the measured lengths and their proportions among groups and subgroups were evaluated. Results. The children with skeletal class III, compared with the findings in the control group, had significantly lower values of maxillary length, total maxillary length, as well as lower values of their lengths in proportion to lengths of the front or the total length of cranial base and in proportion to mandibular lengths (p < 0.05. Among the patients of different sexes, both in the test and the control group, a significant difference in the values of the measured lengths was found. Conclusion. The children with skeletal class III have significantly shorter maxilla than those with skeletal class I.

  19. 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...

  20. Relationship between vertical facial patterns and dental arch form in class II malocclusion

    OpenAIRE

    Grippaudo, Cristina; Oliva, Bruno; Greco, Anna Lucia; Sferra, Simone; Deli, Roberto

    2013-01-01

    Background The purpose of this study is to evaluate the relationship between dental arch form and the vertical facial pattern determined by the angle between the mandibular plane and the anterior cranial base (Sella-nasion/mandibular plane angle (SN-MP)) in skeletal class II untreated patients. Methods A sample of 73 Caucasians patients with untreated skeletal class II in permanent dentition was divided into three groups according to the values of the angle SN-MP. An evaluation of the arch fo...

  1. 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...

  2. 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.

  3. 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.

  4. Treatment effects of R-appliance and Anterior Inclined Bite Plate in Class II, Division I malocclusion

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    Rahman Showkatbakhsh

    2011-12-01

    Full Text Available OBJECTIVES: The purpose of this study was to compare the effects of a differently designed functional appliance (R-appliance and the Anterior Inclined Bite Plate (AIBP in Class II Division I (Cl II Div I cases. MATERIAL AND METHODS: Fifty patients (28 girls, 22 boys were chosen for the study: 25 patients (13 girls, 12 boys with mean age of 10.4±0.8 years were treated with R-appliance for 11±2 months, the other 25 patients (15 girls, 10 boys with mean age of 9±1.2 years were treated with AIBP for 10±2 months. All patients had Cl II Div I malocclusion due to mandibular deficiency. Lateral cephalograms were analyzed at the beginning (T1, T 1 and end of the study (T2, T 2. RESULTS: Paired T-test showed that SNB had a significant increase in both groups. The same test revealed that IMPA was reduced in R-appliance for 3.1±4.7 (p<0.01, but it was increased for 0.1±5.1 (p<0.9 in AIBP group. T-test showed that the inter-group difference of IMPA was statistically significant (p<0.05. SNA showed an increase in both groups (p<0.9. Ar-B and Ar-Pog showed an increase in both groups and the differences between them were statistically significant. CONCLUSIONS: Mandibular advancement was achieved in both groups, but R-appliance achieved this result without lingual tipping of lower incisors.

  5. 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

  6. 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

  7. 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)

  8. 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

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

    Directory of Open Access Journals (Sweden)

    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.

  10. 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.

  11. Impact of different malocclusion types on the vertical mandibular asymmetry in young adult sample

    OpenAIRE

    Al Taki, Amjad; Ahmed, Mohammed H.; Ghani, Hussain A.; Al Kaddah, Fatma

    2015-01-01

    Objective: The aim of this study was to investigate the vertical mandibular asymmetry in a group of adult patients with different types of malocclusions, based on Angle's dental classification. Materials and Methods: A sample of 102 patients (age range 19–28) who went for routine orthodontic treatment in the institution were divided into four groups: Class I, 26 patients; Class II/1, 30 patients; Class III, 23 patients; and control group (CG) with normal occlusion, 23 patients. Condylar asymm...

  12. 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...

  13. 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)

  14. Long-term stability of maxillary group distalization with interradicular miniscrews in a patient with a Class II Division 2 malocclusion.

    Science.gov (United States)

    Kuroda, Shingo; Hichijo, Natsuko; Sato, Minami; Mino, Akiko; Tamamura, Nagato; Iwata, Mitsuhiro; Tanaka, Eiji

    2016-06-01

    We successfully treated a Class II Division 2 patient with maxillary group distalization using interradicular miniscrews. A woman, aged 28 years 11 months, had a convex profile and an excessive overjet caused by a skeletal Class II jaw-base relationship. After leveling and alignment, titanium miniscrews were obliquely implanted between the maxillary second premolar and first molar. To distalize the maxillary dentition, nickel-titanium closing coil springs with a 2-N load were placed between the screws and the hooks on the archwire. After 28 months of active orthodontic treatment, a proper facial profile and an acceptable occlusion were achieved with a 4-mm distalization of the maxillary dentition. The resultant occlusion was stable throughout a 5-year retention period. Interradicular miniscrews were useful to distalize the maxillary dentition for correcting a Class II malocclusion. This new strategy, group distalization with miniscrews, can make the treatment simpler with greater predictability. PMID:27242002

  15. Má oclusão Classe II de Angle tratada sem extrações e com controle de crescimento Angle Class II malocclusion treated without extractions and with growth control

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    Flávia Artese

    2009-06-01

    Full Text Available A má oclusão Classe II de Angle é caracterizada por uma discrepância dentária anteroposterior, que geralmente está acompanhada por alterações esqueléticas. O tratamento ortodôntico precoce permite a correção da discrepância esquelética por controle de crescimento (primeira fase, o que favorece a correção do posicionamento dentário, mais tardiamente (segunda fase. Este relato descreve o tratamento de um caso de má oclusão Classe II, divisão 2, de Angle, em duas fases, e 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. O caso foi avaliado como representante da Categoria 1, ou seja, má oclusão Classe II de Angle tratada sem extrações dentárias e com controle de crescimento.Angle Class II malocclusion is characterized by an anteroposterior dental discrepancy which is generally accompanied by skeletal disharmonies. Early orthodontic treatment allows the correction of skeletal discrepancies using growth control (first phase which favors later correction of tooth positioning (second phase. This case report describes an Angle Class II, division 2, malocclusion treated in two phases and was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as part of the requirements for BBO certification. It was evaluated as a Category 1 case, i.e., Class II malocclusion treated without extractions, with growth control.

  16. Assessment of the dentoskeletal changes following the use of twin-block functional appliance and inclined anterior bite plan in the patients with class II malocclusion div 1 in 11-14 years old

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    Allahyar Geramy

    2015-12-01

    Full Text Available Background and Aims: Cl II malocclusion is one of the most common abnormalities in human societies and using a simple, affordable and accessible treatment that can be provided by general practitioners or specialists, to prevent future malocclusion complications is vital. Cl II malocclusion treatment using functional appliances such as twin block and anterior inclined bite plan have less cost, side effects and complications compared to fixed orthodontic or orthosurgery. Until now, the dentoskeletal changes resulting from the application of twin block and anterior inclined bite plan in patients with Class II malocclusion has not been evaluated. The objective of the present study was to assess the dentoskeletal changes following the use of twin-block functional appliance and inclined anterior bite plan in the patients with class II malocclusion div 1 during mixed dentition. Materials and Methods: In this retrospective cohort trial, 60 patients with the definitive diagnosis of Class II div. 1 malocclusion having ANB>2 and FMA angel between 20 and 30 and without any previous treatment or syndrome who were treated with twin-block or inclined anterior bite plan appliance were selected and their lateral cephalometries were traced before and after treatment. Selected distance and angular landmarks were measured on the cephalograms with the good reliability (ICC=0.953 and the changes occurred in the landmarks were statistically analyzed using Student t test. Results: Due to the increased mandibular growth, most of the landmarks experienced significant changes following the treatment with twin-block and inclined bite plan (P0.05, however, SNA (P=0.04, overjet (P=0.007 and wits appraisal (P=0.004 changed differently after using the appliances. Conclusion: Despite with most similarities of both twin-block and anterior inclined bite plan to correct class II div. 1 malocclusion, Due to the advantages of anterior inclined bite plan such as less size, good

  17. 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

  18. 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

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

    OpenAIRE

    Krisnawati Krisnawati

    2015-01-01

    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 ...

  20. 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.

  1. A study to evaluate the changes in 3rd molar angulation with extraction of four premolars in class II malocclusion therapy

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    Özge Uslu-Akçam

    2015-01-01

    Full Text Available Aim: The objectives of the study are to evaluate the changes in third molar angulation during orthodontic treatment with extraction of premolars in Class II malocclusions, and to evaluate the relationship between the angulation of third molars and positional changes of incisors and molars. Materials and Methods: This study was conducted on lateral cephalograms and dental panoramic tomograms of 30 patients (mean age 13.48 years with skeletodental Class II malocclusion treated with four first premolar extractions. Twenty-four cases were treated with edgewise, and six were treated with Begg technique. The changes in the eruption pattern of the third molars were observed at the beginning of the treatment (T1 and at the end of the treatment (T2. The changes in the anteroposterior position of the incisors and molars, original molar space, and mesiodistal third molar angulation were tested by paired t-test. Results: The positional changes of the upper/lower incisors and first molars and original molar space were found similar in edgewise and Begg technique. Original molar space was increased in both jaws during orthodontic treatment. Long axis angle of the upper right third molar due to occlusal plane was increased nonsignificantly. Lower right third molars uprighted significantly. A positive correlation was found between the inclination of the lower right third molars and position of lower incisors and first molars. Conclusion: Treatment with extraction of premolars result in a greater space in the third molar region as a result of the mesial movement of the molars during space closure.

  2. 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.

  3. 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.

  4. Epidemiology study of malocclusion children between 6 and 8 years old in city of Curitiba – Paraná

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    Marina de Oliveira RIBAS

    2004-11-01

    Full Text Available This study appraised 1550 children with ages varying from 6to 8 years in the city of Curitiba, in order to determine theprevalence of malocclusion and its distribution according tothe different ethnic groups. It was selected to participate in thestudy, randomly, a school of 1st degree of the State Net of PublicTeaching of each one of the 9 areas of the City of Curitiba. Allthe racial groups presented a larger incidence of malocclusionof Class I. The Feodermic racial group presented the largestpercentage of Class III. Class II malocclusion presented a highprevalence in the racial groups of Leucodermics andMelanodemics. In this study the buccal conditions and themalocclusions prevalence were appraised in relation to theeconomic and social level of children between 6 and 8 years old of some public schools in the city of Curitiba. The statisticalmethod used was chi-squared. The results showed that therewas no statistical difference in relation to the buccal conditionsand the prevalence of malocclusion among the city areas, exceptfor a specific one, called Cajuru, where the prevalence of ClassI and Class III malocclusion was higher than expected.

  5. 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.

  6. Size of lower jaw as an early indicator of skeletal class III development

    Directory of Open Access Journals (Sweden)

    Stojanović Zdenka

    2008-01-01

    Full Text Available Background/Aim. Malocclusion of skeletal class III is a complex abnormality, with a characteristic sagital position of the lower jaw in front of the upper one. A higher level of prognatism of the lower jaw in relation to the upper one can be the consequence of its excessive length. The aim of this study was to find the differences in the length of the lower jaw in the children with skeletal class III and the children with normal sagital interjaw relation (skeletal class I in the period of mixed dentition. Methods. After clinical and x-ray diagnostics, profile tele-x-rays of the head were analyzed in 60 examinees with mixed dentition, aged from 6 to 12 years. The examinees were divided into two groups: group 1 - the children with skeletal class III and group 2 - the children with skeletal class I. The length of the lower jaw, upper jaw and cranial base were measured. The proportional relations between the lengths measured within each group were established and the level of difference in the lengths measured and their proportions between the groups were estimated. Results. No significant difference between the groups was found in the body length, ramus and the total length of the lower jaw. Proportional relation between the body length and the length of the lower jaw ramus and proportional relation between the forward cranial base and the lower jaw body were not significantly different. A significant difference was found in proportional relations of the total length of the lower jaw with the total lengths of cranial base and the upper jaw and proportional relation of the length of the lower and upper jaw body. Conclusion. Of all the analyzed parameters, the following were selected as the early indicators of the development of skeletal class III on the lower jaw: greater total length of the lower jaw, proportional to the total lengths of cranial base and the upper jaw, as well as greater length of the lower jaw body, proportional to the length of

  7. Radiographic cephalometry assessment of the linear and angular parameters on cranial base in children with skeletal class III

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    Stojanović Zdenka M.

    2007-01-01

    Full Text Available Background/Aim. In malocclusion of skeletal class III, mandible is located in front of maxilla in sagital plain, which is manifested by a lower value of the sagital inter-jaw angle than in skeletal class I, where the jaw sagital relation is normal. Apart from the deformities on mandible and/or maxilla, in skeletal class III deformities are also frequent on the cranial base. The aim of this research was to find the differences in the parameter values on the cranial base among the children with skeletal class III and the children with skeletal class I in the period of mixed dentition. Methods. After clinical examination and orthopan-tomography, profile radiography of the head was analyzed in 60 examinees, aged from 6−12 years. The examinees were divided into two groups: group 1 - the children with skeletal class III; group 2 - the children with skeletal class I. Both linear and angular parameters on the cranial base were measured, as well as the angles of maxillary and mandible prognatism and the angle of sagital inter-jaw relation. The level of difference in the parameter values between the groups was estimated and the degree of correlation of the main angle of the cranial base with the angles of sagital position of the jaws in each of the two groups was established. Results. A significant difference between the groups was found only in the average values of the angles of maxillary prognatism and sagital interjaw relation. In the group 1, the main angle of the cranial base was in a significant correlation with the angles of sagital positions of the jaws, while in the group 2, such significance was not found. Conclusion. There were no significant differences in the parameter values on the cranial base between the groups. There was a significant correlation of the main angle of the cranial base with the angles of sagital position of the jaws in the group 1 only. .

  8. Measuring Palatal Height in Normal Occlusion and Malocclusions

    OpenAIRE

    M. Zarringhalam

    2004-01-01

    Statement of Problem: Due to the appearance of palatal height difference in orthodontic patients we decided to carry out this study.Purpose: The purpose of this research was to determine palatal height in persons with normal occlusion and different malocclusions (class I, II Div I and III) and comp aring them with each other.Materials and Methods : In this cross sectional research, 240 subjects were selected. Sixty cases (30 girls and 30 boys) with normal occlusion within 16-18 years old were...

  9. 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

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    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.

  10. 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....

  11. [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

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

    Directory of Open Access Journals (Sweden)

    Danaie S

    2005-06-01

    Full Text Available 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.

  13. 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

  14. 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.

  15. 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

  16. 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...

  17. 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.

  18. 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...

  19. 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.

  20. 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.

  1. 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...

  2. 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

  3. 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

  4. 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.

  5. Má oclusão de Classe I com biprotrusão e ausência dos primeiros molares inferiores Angle Class I malocclusion with bimaxillary dental protrusion and missing mandibular first molars

    Directory of Open Access Journals (Sweden)

    Aldino Puppin Filho

    2011-12-01

    Full Text Available O presente relato de caso descreve o tratamento ortodôntico de uma paciente de 24 anos de idade, portadora de má oclusão de Classe I de Angle, com protrusão dos incisivos superiores e inferiores, além de perda recente dos primeiros molares inferiores. O tratamento idealizado envolveu a exodontia dos primeiros pré-molares superiores, aliada ao fechamento dos espaços presentes na arcada inferior. O resultado obtido demonstra a necessidade de planos de tratamento individualizados e a importância dos conceitos biomecânicos para movimentar adequadamente os dentes. Esse caso clínico foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria livre escolha, como parte dos requisitos para obtenção do título de Diplomado pelo BBO.This case report describes the orthodontic treatment of a 24-year-old patient presenting with Angle Class I malocclusion, bimaxillary dental protrusion and recent loss of mandibular molars. Treatment involved extraction of the maxillary first premolars and closing of mandibular first molar spaces. Treatment outcomes demonstrate the need for individualized treatment planning and highlight the key role played by biomechanical concepts in achieving proper orthodontic tooth movement. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO as representative of the free choice category in partial fulfillment of the requirements for obtaining the BBO Diploma.

  6. 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.

  7. 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.

  8. 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.

  9. 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

  10. 25 CFR 291.4 - What must a proposal requesting Class III gaming procedures contain?

    Science.gov (United States)

    2010-04-01

    ... integrity of gaming operations as set forth in 25 CFR Part 542; (5) Provisions for records retention... 25 Indians 1 2010-04-01 2010-04-01 false What must a proposal requesting Class III gaming... ENTERPRISES CLASS III GAMING PROCEDURES § 291.4 What must a proposal requesting Class III gaming...

  11. Diverse functions and reactions of class III peroxidases.

    Science.gov (United States)

    Shigeto, Jun; Tsutsumi, Yuji

    2016-03-01

    Higher plants contain plant-specific peroxidases (class III peroxidase; Prxs) that exist as large multigene families. Reverse genetic studies to characterize the function of each Prx have revealed that Prxs are involved in lignification, cell elongation, stress defense and seed germination. However, the underlying mechanisms associated with plant phenotypes following genetic engineering of Prx genes are not fully understood. This is because Prxs can function as catalytic enzymes that oxidize phenolic compounds while consuming hydrogen peroxide and/or as generators of reactive oxygen species. Moreover, biochemical efforts to characterize Prxs responsible for lignin polymerization have revealed specialized activities of Prxs. In conclusion, not only spatiotemporal regulation of gene expression and protein distribution, but also differentiated oxidation properties of each Prx define the function of this class of peroxidases. PMID:26542837

  12. 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

  13. 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.

  14. Transdisciplinary treatment of Class III malocclusion using conventional implant-supported anchorage: 10-year posttreatment follow-up

    Directory of Open Access Journals (Sweden)

    Mariana Roennau Lemos Rinaldi

    2015-06-01

    Full Text Available INTRODUCTION: Combined treatment offers advantages for partially edentulous patients. Conventional implants, used as orthodontic anchorage, enable previous orthodontic movement, which provides appropriate space gain for crown insertion. OBJECTIVE: This case report describes the treatment of a 61-year and 10-month-old patient with negative overjet which made ideal prosthetic rehabilitation impossible, thereby hindering dental and facial esthetics. CASE REPORT: After a diagnostic setup, conventional implants were placed in the upper arch to anchor intrusion and retract anterior teeth. Space gain for lateral incisors was achieved in the lower arch by means of an orthodontic appliance. CONCLUSIONS: Integrated planning combining Orthodontics and Implantology provided successful treatment by means of conventional implant-supported anchorage. The resulting occlusal relationship proved stable after 10 years.

  15. 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

    OpenAIRE

    Rogério Lacerda dos Santos; Antônio Carlos de Oliveira Ruellas

    2009-01-01

    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...

  16. 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

  17. 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.

  18. 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

  19. A Comparative Study of Dermatoglyphics in Individuals with Normal Occlusions and Malocclusions

    OpenAIRE

    Reddy, Boggula Rama Mohan; Sankar, Singaraju Gowri; E.T., Roy; Govulla, Supraja

    2013-01-01

    Introduction: Dermatoglyphics is the study on edpidermal ridges on the palmar and plantar surfaces of the feet and hand. Embryological development of orodental structures and these dermal patterns occur during the same period. The environmentally influenced genetic predisposition is found in different types of malocclusions. This malocclusion should also exhibit different dermal patterns which are unique for each class.

  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. 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...

  2. 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...

  3. 78 FR 14352 - Notice of Approved Class III Tribal Gaming Ordinances

    Science.gov (United States)

    2013-03-05

    ... National Indian Gaming Commission Notice of Approved Class III Tribal Gaming Ordinances AGENCY: National Indian Gaming Commission. ACTION: Notice. SUMMARY: The purpose of this notice is to inform the public of the approved Class III tribal gaming ordinances. DATES: Effective Date: This notice is effective...

  4. 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-...

  5. 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 .

  6. The biowaiver extension for BCS class III drugs: the effect of dissolution rate on the bioequivalence of BCS class III immediate-release drugs predicted by computer simulation.

    Science.gov (United States)

    Tsume, Yasuhiro; Amidon, Gordon L

    2010-08-01

    The Biopharmaceutical Classification System (BCS) guidance issued by the FDA allows waivers for in vivo bioavailability and bioequivalence studies for immediate-release (IR) solid oral dosage forms only for BCS class I drugs. However, a number of drugs within BCS class III have been proposed to be eligible for biowaivers. The World Health Organization (WHO) has shortened the requisite dissolution time of BCS class III drugs on their Essential Medicine List (EML) from 30 to 15 min for extended biowaivers; however, the impact of the shorter dissolution time on AUC(0-inf) and C(max) is unknown. The objectives of this investigation were to assess the ability of gastrointestinal simulation software to predict the oral absorption of the BCS class I drugs propranolol and metoprolol and the BCS class III drugs cimetidine, atenolol, and amoxicillin, and to perform in silico bioequivalence studies to assess the feasibility of extending biowaivers to BCS class III drugs. The drug absorption from the gastrointestinal tract was predicted using physicochemical and pharmacokinetic properties of test drugs provided by GastroPlus (version 6.0). Virtual trials with a 200 mL dose volume at different drug release rates (T(85%) = 15 to 180 min) were performed to predict the oral absorption (C(max) and AUC(0-inf)) of the above drugs. Both BCS class I drugs satisfied bioequivalence with regard to the release rates up to 120 min. The results with BCS class III drugs demonstrated bioequivalence using the prolonged release rate, T(85%) = 45 or 60 min, indicating that the dissolution standard for bioequivalence is dependent on the intestinal membrane permeability and permeability profile throughout the gastrointestinal tract. The results of GastroPlus simulations indicate that the dissolution rate of BCS class III drugs could be prolonged to the point where dissolution, rather than permeability, would control the overall absorption. For BCS class III drugs with intestinal absorption patterns

  7. 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…

  8. 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...

  9. 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...

  10. 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...

  11. 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.

  12. 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

  13. 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

  14. 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

  15. Viral Class 1 RNase III Involved in Suppression of RNA Silencing

    OpenAIRE

    Kreuze, Jan F.; Savenkov, Eugene I.; Cuellar, Wilmer; Li, Xiangdong; Valkonen, Jari P. T.

    2005-01-01

    Double-stranded RNA (dsRNA)-specific endonucleases belonging to RNase III classes 3 and 2 process dsRNA precursors to small interfering RNA (siRNA) or microRNA, respectively, thereby initiating and amplifying RNA silencing-based antiviral defense and gene regulation in eukaryotic cells. However, we now provide evidence that a class 1 RNase III is involved in suppression of RNA silencing. The single-stranded RNA genome of sweet potato chlorotic stunt virus (SPCSV) encodes an RNase III (RNase3)...

  16. 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 hear...

  17. A comparison of the treatment effects of the Forsus Fatigue Resistance Device and the Twin Block appliance in patients with class II malocclusions

    OpenAIRE

    Hanoun A; Al-Jewair TS; Tabbaa S; Allaymouni MA; Preston CB

    2014-01-01

    Abdulfatah Hanoun,1 Thikriat S Al-Jewair,1,2 Sawsan Tabbaa,1 Mhd Amer Allaymouni,1 Charles B Preston1 1Department of Orthodontics, School of Dental Medicine, State University of New York at Buffalo, NY, USA; 2College of Dentistry, University of Dammam, Saudi Arabia Objectives: We evaluated the skeletal and dentoalveolar effects of the Forsus Fatigue Resistance Device (FRD) and the Twin Block appliance (TB) in comparison with nontreated controls in the treatment of patients with class II divi...

  18. 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.

  19. 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

  20. Interferência do tipo de má oclusão nas medidas dos movimentos mandibulares: um estudo realizado com o apoio do exército brasileiro Interference of malocclusion types in mandibular movements measures: a study supported by the Brazilian army

    Directory of Open Access Journals (Sweden)

    Andrea Luiza Taumaturgo Metzger

    2009-03-01

    Full Text Available OBJETIVO: correlacionar os diferentes tipos de má oclusões dentais com as medidas de lateralidade e protrusão mandibular e amplitude de abertura bucal de indivíduos adultos normais. MÉTODOS: neste estudo participaram 127 militares do sexo masculino que serviam no 21º Depósito de Suprimento do Exército Brasileiro em São Paulo, no ano de 2005, com idades entre 18 e 32 anos. Do total de militares, 47 (39,16% foram excluídos. Desse modo, a amostra final foi de 80 indivíduos os quais foram divididos em grupo controle (31 - 38,75% e grupo experimental (49 - 61,25%. Na avaliação, foi realizada uma breve anamnese e inspeção oral, com posterior medição dos movimentos mandibulares de abertura bucal, protrusão e lateralidade para direita e para esquerda. RESULTADOS: 69,38% de indivíduos portadores da má oclusão Classe I de Angle; 16,32% de Classe II-1; 6,12% de Classe II-2; 8,16% de Classe III. A medida de abertura de boca, relacionada com os tipos de má oclusão, não foi estatisticamente significante, apesar de terem sido obtidas as maiores medidas nos indivíduos portadores de Classe III. Já nas medidas de protrusão e lateralidade mandibular existiu uma diferença estatisticamente significante nos grupos de uma maneira em geral. 40,42% dos indivíduos apresentavam ausência de algum dente molar. CONCLUSãO: não houve relação entre a medida de abertura de boca com a presença de má oclusões. Entretanto, houve relação entre as medidas de protrusão e de lateralidade mandibular para a direita e para a esquerda com má oclusões.PURPOSE: to establish the relationship between different types of dental malocclusions and lateralization and protrusion measures and mouth opening in normal adult subjects. METHODS: it was made with 127 military men who served at the 21st Supply Deposit of Brazilian Army, in Sao Paulo, in 2005, with ages between 18 and 32 years. 47 subjects were excluded. Because of that, the final sample counted with

  1. 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.

  2. Glass ionomer cement as an occlusive barrier in Class III furcation defect

    Directory of Open Access Journals (Sweden)

    Rameshwari Singhal

    2011-01-01

    Full Text Available Predicting the prognosis of molars that have experienced furcation invasion, is often a frustrating experience to the dental clinician and disappointing report to the patient involved. Although multiple treatment modalities have been attempted to retain teeth with severe furcation invasion, clinical success has not been predictable. A case report involving the use of glass ionomer cement (GIC as an occlusive barrier in the management of Class III furcation defect involving mandibular first molar is presented. A literature review on the subject matter was conducted using Medline, Google search engines, and manual library search. GIC restoration of Class III furcation invasion gives a satisfactory result. Surgical and nonsurgical treatment options are available for the management of the condition. GIC as an occlusive barrier in Class III furcation invasion is an economical and less invasive treatment option. It also makes home care easy for the patient.

  3. 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

  4. 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

  5. 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.

  6. Load Flow and Short Circuit Analysis of the Class III Power System of HANARO

    International Nuclear Information System (INIS)

    The planning, design, and operation of electric power system require engineering studies to assist in the evaluation of the system performance, reliability, safety and economics. The Class III power of HANARO supplies power for not only HANARO but also RIPF and IMEF. The starting current of most ac motors is five to ten times normal full load current. The loads of the Class III power are connected in consecutive orders at an interval for 10 seconds to avoid excessive voltage drop. This technical report deals with the load flow study and motor starting study for the Class III power of HANARO using ETAP(Electrical Transient Analyzer Program) to verify the capacity of the diesel generator. Short-circuit studies are done to determine the magnitude of the prospective currents flowing throughout the power system at various time intervals after a fault occurs. Short-circuit studies can be performed at the planning stage in order to help finalize the system layout, determine voltage levels, and size cables, transformers, and conductors. From this study, we verify the short circuit current capacity of air circuit breaker(ACB) and automatic transfer switch(ATS) of the Class III power

  7. 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 ...

  8. 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

  9. A Tomographic Study of Condylar Position in Asymptomatic Subjects with Malocclusion

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Young Ju; Ko, Kwang Jun [Dept. of Oral Radiology, College of Dentistry, Chon Buk National University, Chonju (Korea, Republic of)

    1989-11-15

    The author analysed tomograms and submento-vertex radiograms of 90 temporomandibular joints from 45 asymptomatic young adults. 15 had Angle class I malocclusion, 15 class II and 15 class III. Corrected lateral tomograms were obtained in three condylar positions; centric occlusion, centric relation and 1 inch mouth opening. The condylar angulation, depth of cut, joint spaces were analysed in each radiogram. The obtained results were as follow; 1. The mean condylar angulation in Angle class I, II, III group was 17.55 {+-} 5.51 degree,13.33 {+-} 8.85 degree,16.25 {+-} 6.60 degree, respectively, and there was no significant difference in each group. The mean condylar angulation of right side (16.62 {+-} 7.23 degree) was larger than left side (14.80 {+-} 7.33 degree). 2. The mean depth of cut in Angle class I, II, III group was 8.13 {+-} 1.61 cm, 3.05 {+-} 3.80 cm, 7.75 {+-} 2.19 cm, respectively. Angle class I and class II group revealed significant difference in measurement (p<0.01). 3. The mean height of articular fossa in Angle class I, II, III group was 8.67 {+-} 3.06 mm, 9.61 {+-} 2.57 mm, 8.93 {+-} 2.83 mm, respectively. And the mean width of articular fossa was 19.90 {+-} 2.80 mm, 19.48 {+-} 3.83 mm, 20.36 {+-} 4.82 mm, respectively. 4. The mean height and width of condylar head was 5.11{+-} 1.16 mm, 11.20 {+-} 2.26 mm, respectively. 5. In centric occlusion, the superior joint space was the largest (3.42 {+-} 1.42 mm), followed by anterior joint space (2.94 {+-} 1.95 mm) and the posterior joint space (2.64 {+-} 1.19 mm). In centric relation, the anterior joint space was the largest (3.86 {+-} 2.17 mm), followed by the superior joint space (3.64 {+-} 3.68 mm) and the posterior joint space (1.18 {+-} 0.77 mm). 6. The displaced measurement from centric relation to centric occlusion was 1.10 {+-} 1.04 mm anteriorly and 0.24 {+-} 0.97 mm inferiorly. In 1 inch mouth opening state, the condylar head displaced posteroinferiorly (2.49 {+-} 2.49 mm posteriorly, 1

  10. 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

  11. 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.

  12. 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

  13. Masseter function and skeletal malocclusion

    OpenAIRE

    Sciote, J. J.; Raoul, G.; Ferri, J.; Close, J; Horton, M.J.; Rowlerson, A

    2013-01-01

    The aim of this work is to review the relationship between the function of the masseter muscle and the occurrence of malocclusions. An analysis was made of the masseter muscle samples from subjects who underwent mandibular osteotomies. The size and proportion of type-II fibers (fast) decreases as facial height increases. Patients with mandibular asymmetry have more type-II fibers on the side of their deviation. The insulin-like growth factor and myostatin are expressed differently depending o...

  14. 40 CFR 144.21 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells.

    Science.gov (United States)

    2010-07-01

    ... recovery and hydrocarbon storage) and III wells. 144.21 Section 144.21 Protection of Environment... hydrocarbon storage) and III wells. (a) An existing Class I, II (except enhanced recovery and hydrocarbon... decision; or (9) For Class II wells (except enhanced recovery and hydrocarbon storage), five years...

  15. 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...

  16. Malocclusions in guinea pigs, chinchillas and rabbits

    OpenAIRE

    Legendre, Loïc F.J.

    2002-01-01

    The types of malocclusions encountered in rodents and lagomorphs are classified. Diagnosis, treatment, and prognosis are reviewed. Some malocclusions are curable, whereas others can only be controlled. The need to perform a complete oral examination and to find a cause for the condition is stressed, as it will seriously affect the prognosis.

  17. 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.

  18. Glass ionomer cement as an occlusive barrier in Class III furcation defect

    OpenAIRE

    Rameshwari Singhal

    2011-01-01

    Predicting the prognosis of molars that have experienced furcation invasion, is often a frustrating experience to the dental clinician and disappointing report to the patient involved. Although multiple treatment modalities have been attempted to retain teeth with severe furcation invasion, clinical success has not been predictable. A case report involving the use of glass ionomer cement (GIC) as an occlusive barrier in the management of Class III furcation defect involving mandibular first m...

  19. Characterizing Distributions of Class III Milk Prices: Implications for Risk Management

    OpenAIRE

    Wang, Dabin; Tomek, William G.

    2005-01-01

    Descriptive statistics and time-series econometric models are used to characterize the behavior of monthly fluid milk prices. Prices in April, May and June appear to be more variable than those in subsequent months, and the spring-time prices are perhaps skewed. Econometric models can capture the historical behavior of spot prices, but forecasts converge to the marginal distribution of the sample prices in about six months. Futures prices for Class III milk have the expected time-to-maturity ...

  20. 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.

  1. 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.

  2. Prevalence of Spaced and Non-Spaced Dentition and Occlusal Relationship of Primary Dentition and its Relation to Malocclusion in School Children of Davangere

    Science.gov (United States)

    Shavi, Girish R; Hiremath, Neel V; Shukla, Ravikumar; Bali, Praveen Kumar; Jain, Swapnil Kumar; Ajagannanavar, Sunil Lingaraj

    2015-01-01

    Background: The aim of the current study was carried to determine the relation of spacing, closed dentition, and occlusal relation with malocclusion in the primary dentition in children during deciduous dentition period among school children of Davangere. Materials and Methods: A total of 945 school children all having deciduous teeth were included in the study. Informed consent for the child’s participation is taken from the school principal. The dentition was examined under natural daylight, and the data was recorded. All the school children were screened for spaced and non-spaced dentition, molar and canine relationship. Results: The results concluded that most of the children showed spaced dentition (82.1%) when compared to non-spaced dentition (17.9%) with males shown more spaced dentition than compared to females. Among all children examined for molar and canine relation, flush terminal molar relation (65%) showed highest among all molar relation followed by mesial step (31%) and distal step (4%), and Class I canine relation (90%) was significant followed by Class II (6%) and Class III canine relation (4%). No significant difference was seen between right and left side. Conclusion: The study concludes that determining the malocclusion and its correction at an early age helps in preventing a future complication in permanent dentition since stable primary occlusion leads to ideal occlusion in permanent dentition. Spacing, i.e., primate and physiologic space with the terminal molar relation in primary dentition indicates proper alignment of the permanent dentition. PMID:26435622

  3. 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.

  4. 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...

  5. 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.

  6. 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...

  7. Bacillus subtilis class Ib ribonucleotide reductase is a dimanganese(III)-tyrosyl radical enzyme.

    Science.gov (United States)

    Zhang, Yan; Stubbe, Joanne

    2011-06-28

    Bacillus subtilis class Ib ribonucleotide reductase (RNR) catalyzes the conversion of nucleotides to deoxynucleotides, providing the building blocks for DNA replication and repair. It is composed of two proteins: α (NrdE) and β (NrdF). β contains the metallo-cofactor, essential for the initiation of the reduction process. The RNR genes are organized within the nrdI-nrdE-nrdF-ymaB operon. Each protein has been cloned, expressed, and purified from Escherichia coli. As isolated, recombinant NrdF (rNrdF) contained a diferric-tyrosyl radical [Fe(III)(2)-Y(•)] cofactor. Alternatively, this cluster could be self-assembled from apo-rNrdF, Fe(II), and O(2). Apo-rNrdF loaded using 4 Mn(II)/β(2), O(2), and reduced NrdI (a flavodoxin) can form a dimanganese(III)-Y(•) [Mn(III)(2)-Y(•)] cofactor. In the presence of rNrdE, ATP, and CDP, Mn(III)(2)-Y(•) and Fe(III)(2)-Y(•) rNrdF generate dCDP at rates of 132 and 10 nmol min(-1) mg(-1), respectively (both normalized for 1 Y(•)/β(2)). To determine the endogenous cofactor of NrdF in B. subtilis, the entire operon was placed behind a Pspank(hy) promoter and integrated into the B. subtilis genome at the amyE site. All four genes were induced in cells grown in Luria-Bertani medium, with levels of NrdE and NrdF elevated 35-fold relative to that of the wild-type strain. NrdE and NrdF were copurified in a 1:1 ratio from this engineered B. subtilis. The visible, EPR, and atomic absorption spectra of the purified NrdENrdF complex (eNrdF) exhibited characteristics of a Mn(III)(2)-Y(•) center with 2 Mn/β(2) and 0.5 Y(•)/β(2) and an activity of 318-363 nmol min(-1) mg(-1) (normalized for 1 Y(•)/β(2)). These data strongly suggest that the B. subtilis class Ib RNR is a Mn(III)(2)-Y(•) enzyme. PMID:21561096

  8. 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

    Directory of Open Access Journals (Sweden)

    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

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

    Directory of Open Access Journals (Sweden)

    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

  10. 40 CFR 147.1653 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.1653 Section 147.1653 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  11. 40 CFR 147.903 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.903 Section 147.903 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  12. 40 CFR 147.1153 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.1153 Section 147.1153 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  13. 40 CFR 147.1353 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.1353 Section 147.1353 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  14. 40 CFR 147.303 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.303 Section 147.303 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  15. 40 CFR 147.103 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.103 Section 147.103 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  16. 40 CFR 147.2153 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.2153 Section 147.2153 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  17. 40 CFR 147.1953 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.1953 Section 147.1953 Protection of... enhanced recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection...

  18. 40 CFR 147.1453 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.1453 Section 147.1453 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  19. 40 CFR 147.253 - Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized...

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Existing Class I, II (except enhanced recovery and hydrocarbon storage) and III wells authorized by rule. 147.253 Section 147.253 Protection of... recovery and hydrocarbon storage) and III wells authorized by rule. Maximum injection pressure. The...

  20. 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

    Directory of Open Access Journals (Sweden)

    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.

  1. 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 ...

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

    Directory of Open Access Journals (Sweden)

    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.

  3. 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

  4. Relationship between tooth dimensions and malocclusion

    International Nuclear Information System (INIS)

    Objective: To observe the difference in dimension of teeth among adult females with and without malocclusion. Methods: The cross-sectional study was conducted at Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, from April 2011 to April 2013, and used non-probability consecutive sampling. Mesiodistal and buccolingual crown dimensions were measured on study casts by using digital sliding caliper in 2 groups of females. Group1 had 150 subjects with normal occlusion, while Group 2 had 234 with malocclusion. Independent t test was conducted to evaluate the difference between the dimensions of teeth of the two groups. Statistical analysis was done on SPSS version 16, and p value was considered significant at 0.05. Results: Overall, the difference between the groups showed a greater tooth dimension in the malocclusion group of population compared to the normal group, and the most significant difference was observed in the mesiodistal dimension of maxillary 2nd premolar, which was 0.9+-0.6801mm greater in dimension in the malocclusion group compared to the normal group. The least difference was observed in the buccolingual dimension of the mandibular central incisor where the malocclusion group had only 0.08+-0.5247mm larger mandibular central incisors in the buccolingual dimension compared to the normal group. Conclusion: Mesiodistal and buccolingual crown dimensions were characteristically larger in the malocclusion group. (author)

  5. 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)

  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

    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)

  8. 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

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

    Directory of Open Access Journals (Sweden)

    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

  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. 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

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

    Directory of Open Access Journals (Sweden)

    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.

  13. 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

  14. Shoot meristem function and leaf polarity: the role of class III HD-ZIP genes.

    Directory of Open Access Journals (Sweden)

    Mary E Byrne

    2006-06-01

    Full Text Available The shoot apical meristem comprises an organized cluster of cells with a central region population of self-maintaining stem cells providing peripheral region cells that are recruited to form differentiated lateral organs. Leaves, the principal lateral organ of the shoot, develop as polar structures typically with distinct dorsoventrality. Interdependent interactions between the meristem and developing leaf provide essential cues that serve both to maintain the meristem and to pattern dorsoventrality in the initiating leaf. A key component of both processes are the class III HD-ZIP genes. Current findings are defining the developmental role of members of this family and are identifying multiple mechanisms controlling expression of these genes.

  15. 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

  16. S-Nitrosoglutathione is a substrate for rat alcohol dehydrogenase class III isoenzyme.

    Science.gov (United States)

    Jensen, D E; Belka, G K; Du Bois, G C

    1998-04-15

    An enzyme isolated from rat liver cytosol (native molecular mass 78. 3 kDa; polypeptide molecular mass 42.5 kDa) is capable of catalysing the NADH/NADPH-dependent degradation of S-nitrosoglutathione (GSNO). The activity utilizes 1 mol of coenzyme per mol of GSNO processed. The isolated enzyme has, as well, several characteristics that are unique to alcohol dehydrogenase (ADH) class III isoenzyme: it is capable of catalysing the NAD+-dependent oxidations of octanol (insensitive to inhibition by 4-methylpyrazole), methylcrotyl alcohol (stimulated by added pentanoate) and 12-hydroxydodecanoic acid, and also the NADH/NADPH-dependent reduction of octanal. Methanol and ethanol oxidation activity is minimal. The enzyme has formaldehyde dehydrogenase activity in that it is capable of catalysing the NAD+/NADP+-dependent oxidation of S-hydroxymethylglutathione. Treatment with the arginine-specific reagent phenylglyoxal prevents the pentanoate stimulation of methylcrotyl alcohol oxidation and markedly diminishes the enzymic activity towards octanol, 12-hydroxydodecanoic acid and S-hydroxymethylglutathione; the capacity to catalyse GSNO degradation is also checked. Additionally, limited peptide sequencing indicates 100% correspondence with known ADH class III isoenzyme sequences. Kinetic studies demonstrate that GSNO is an exceptionally active substrate for this enzyme. S-Nitroso-N-acetylpenicillamine and S-nitrosated human serum albumin are not substrates; the activity towards S-nitrosated glutathione mono- and di-ethyl esters is minimal. Product analysis suggests that glutathione sulphinamide is the major stable product of enzymic GSNO processing, with minor yields of GSSG and NH3; GSH, hydroxylamine, nitrite, nitrate and nitric oxide accumulations are minimal. Inclusion of GSH in the reaction mix decreases the yield of the supposed glutathione sulphinamide in favor of GSSG and hydroxylamine. PMID:9531510

  17. 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.

  18. 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.

  19. A Tomographic Study of Condylar Position in Asymptomatic Subjects with Malocclusion

    International Nuclear Information System (INIS)

    The author analysed tomograms and submento-vertex radiograms of 90 temporomandibular joints from 45 asymptomatic young adults. 15 had Angle class I malocclusion, 15 class II and 15 class III. Corrected lateral tomograms were obtained in three condylar positions; centric occlusion, centric relation and 1 inch mouth opening. The condylar angulation, depth of cut, joint spaces were analysed in each radiogram. The obtained results were as follow; 1. The mean condylar angulation in Angle class I, II, III group was 17.55 ± 5.51 degree,13.33 ± 8.85 degree,16.25 ± 6.60 degree, respectively, and there was no significant difference in each group. The mean condylar angulation of right side (16.62 ± 7.23 degree) was larger than left side (14.80 ± 7.33 degree). 2. The mean depth of cut in Angle class I, II, III group was 8.13 ± 1.61 cm, 3.05 ± 3.80 cm, 7.75 ± 2.19 cm, respectively. Angle class I and class II group revealed significant difference in measurement (p<0.01). 3. The mean height of articular fossa in Angle class I, II, III group was 8.67 ± 3.06 mm, 9.61 ± 2.57 mm, 8.93 ± 2.83 mm, respectively. And the mean width of articular fossa was 19.90 ± 2.80 mm, 19.48 ± 3.83 mm, 20.36 ± 4.82 mm, respectively. 4. The mean height and width of condylar head was 5.11± 1.16 mm, 11.20 ± 2.26 mm, respectively. 5. In centric occlusion, the superior joint space was the largest (3.42 ± 1.42 mm), followed by anterior joint space (2.94 ± 1.95 mm) and the posterior joint space (2.64 ± 1.19 mm). In centric relation, the anterior joint space was the largest (3.86 ± 2.17 mm), followed by the superior joint space (3.64 ± 3.68 mm) and the posterior joint space (1.18 ± 0.77 mm). 6. The displaced measurement from centric relation to centric occlusion was 1.10 ± 1.04 mm anteriorly and 0.24 ± 0.97 mm inferiorly. In 1 inch mouth opening state, the condylar head displaced posteroinferiorly (2.49 ± 2.49 mm posteriorly, 1.17 ± 1.34 mm inferiorly) from the apex of articular

  20. 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

  1. Evaluation of Mandibular Third Molar Positions in Various Vertical Skeletal Malocclusions

    Directory of Open Access Journals (Sweden)

    Fahimeh Farzanegan

    2012-09-01

    Full Text Available Introduction: The purpose of this study was to evaluate the relationship between the position of mandibular third molar (M3 and vertical skeletal malocclusions. Methods: Materials for the study consisted of panoramic radiographs and lateral cephalograms of 73 fifteen to nineteen-year-old class I patients (girls=66%, boys= 34%. Patients were classified into three groups based on four vertical cephalometric indices: FMA, PFH/AFH, LAFH/TAFH, and Y-axis. Analysis of the position of mandibular M3 and its relation to the bone and other teeth were determined by three variables on panoramic view: evaluation of the space for mandibular M3, vertical position of the mandibular M3 in relation to occlusal plane, and spatial relationship between the mandibular second molar (M2 and M3. Results: In girls, there was a significant relationship between the retromolar space in both sides of the jaw and different vertical skeletal malocclusions (P<0.001 and P=0.001, respectively. In boys, significant relationship existed between the retromolar space in both sides of the jaw, spatial relationship between the mandibular M2 and mandibular M3 in the left side of the jaw and various vertical skeletal malocclusions (P=0.021, P=0.026, and P=0.017, respectively. Conclusion: The present study showed significant correlation between the retromolar space and various vertical skeletal malocclusions in boys and girls.

  2. 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.

  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. 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...

  5. 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...

  6. 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.

  7. 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

  8. 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

  9. Evaluation of Mandibular Third Molar Positions in Various Vertical Skeletal Malocclusions

    OpenAIRE

    Fahimeh Farzanegan; Ali Goya

    2013-01-01

    Introduction: The purpose of this study was to evaluate the relationship between the position of mandibular third molar (M3) and vertical skeletal malocclusions. Methods: Materials for the study consisted of panoramic radiographs and lateral cephalograms of 73 fifteen to nineteen-year-old class I patients (girls=66%, boys= 34%). Patients were classified into three groups based on four vertical cephalometric indices: FMA, PFH/AFH, LAFH/TAFH, and Y-axis. Analysis of the position of mandibular M...

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

    Directory of Open Access Journals (Sweden)

    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.

  11. 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

  12. Purification, crystallization and preliminary X-ray diffraction analysis of a class P-III metalloproteinase (BmMP-III) from the venom of Bothrops moojeni

    International Nuclear Information System (INIS)

    The P-III metalloproteinase from B. moojeni was crystallized and diffraction data were collected to a maximum resolution of 3.3 Å. Snake-venom metalloproteinases (SVMPs) comprise a family of haemostatically active toxins which can cause haemorrhage, coagulopathy, inhibition of platelet aggregation and inflammatory response. These effects are attributed to the proteolytic action of SVMPs on extracellular matrix components, plasma proteins and cell-surface proteins. SVMPs are classified into four classes (P-I to P-IV) based on their domain structures. In order to understand the multiple roles played by the domains of P-III SVMPs, a P-III SVMP (BmMP-III) from the venom of Bothrops moojeni was purified, characterized and crystallized. The crystals belonged to space group I4122, with unit-cell parameters a = b = 108.16, c = 196.09 Å. Initially, flash-cooled crystals diffracted poorly to a resolution of about 10 Å. However, a significant improvement in the diffraction resolution was observed upon annealing and a complete data set was collected to 3.3 Å resolution. The asymmetric unit contained one molecule and the structure was determined and partially refined to an R factor of 34%. Structural comparisons indicated that the cysteine-rich domain can adopt different conformations in relation to the catalytic domain, which may modulate the enzyme activity

  13. 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...

  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. Bone thickness of the infrazygomatic crest area in skeletal Class III growing patients: A computed tomographic study

    International Nuclear Information System (INIS)

    This study was performed to investigate the bone thickness of the infrazygomatic crest area by computed tomography (CT) for placement of a miniplate as skeletal anchorage for maxillary protraction in skeletal Class III children. CT images of skeletal Class III children (7 boys, 9 girls, mean age: 11.4 years) were taken parallel to the Frankfurt horizontal plane. The bone thickness of the infrazygomatic crest area was measured at 35 locations on the right and left sides, perpendicular to the bone surface. The bone was thickest (5.0 mm) in the upper zygomatic bone and thinnest (1.1 mm) in the anterior wall of the maxillary sinus. Generally, there was a tendency for the bone to be thicker at the superior and lateral area of the zygomatic process of the maxilla. There was no clinically significant difference in bone thickness between the right and left sides; however, it was thicker in male than in female subjects. In the infrazygomatic crest area, the superior and lateral area of the zygomatic process of the maxilla had the most appropriate thickness for placement of a miniplate in growing skeletal Class III children with a retruded maxilla.

  16. Bone thickness of the infrazygomatic crest area in skeletal Class III growing patients: A computed tomographic study

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hyub Soo; Choi, Hang Moon; Choi, Dong Soon; Jang, Insan; Cha, Bong Kuen [College of Dentistry and Research Institute of Oral Science, Gangneung-Wonju National University, Gangneung (Korea, Republic of)

    2013-12-15

    This study was performed to investigate the bone thickness of the infrazygomatic crest area by computed tomography (CT) for placement of a miniplate as skeletal anchorage for maxillary protraction in skeletal Class III children. CT images of skeletal Class III children (7 boys, 9 girls, mean age: 11.4 years) were taken parallel to the Frankfurt horizontal plane. The bone thickness of the infrazygomatic crest area was measured at 35 locations on the right and left sides, perpendicular to the bone surface. The bone was thickest (5.0 mm) in the upper zygomatic bone and thinnest (1.1 mm) in the anterior wall of the maxillary sinus. Generally, there was a tendency for the bone to be thicker at the superior and lateral area of the zygomatic process of the maxilla. There was no clinically significant difference in bone thickness between the right and left sides; however, it was thicker in male than in female subjects. In the infrazygomatic crest area, the superior and lateral area of the zygomatic process of the maxilla had the most appropriate thickness for placement of a miniplate in growing skeletal Class III children with a retruded maxilla.

  17. Molar Malocclusions in Pine Voles (Microtus pinetorum)

    OpenAIRE

    Harvey, Stephen B.; Alworth, Leanne C; Blas-Machado, Uriel

    2009-01-01

    Here we describe 5 cases of molar malocclusions in adult pine voles (Microtus pinetorum) used for behavioral endocrinology studies. This species belongs to the subfamily Microtinae, which possess aradicular hypsodont molars. The abnormal molars identified caused apparent difficulty in mastication, resulting in poor body condition necessitating euthanasia. Postmortem examination of the oral cavity revealed grossly elongated mandibular and maxillary molars with abnormal wear at occlusal surface...

  18. 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...

  19. 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.

  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. Evaluation of Mandibular Third Molar Positions in Various Vertical Skeletal Malocclusions

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    Fahimeh Farzanegan

    2013-01-01

    Full Text Available Introduction: The purpose of this study was to evaluate the relationship between the position of mandibular third molar (M3 and vertical skeletal malocclusions. Methods: Materials for the study consisted of panoramic radiographs and lateral cephalograms of 73 fifteen to nineteen-year-old class I patients (girls=66%, boys= 34%. Patients were classified into three groups based on four vertical cephalometric indices: FMA, PFH/AFH, LAFH/TAFH, and Y-axis. Analysis of the position of mandibular M3 and its relation to the bone and other teeth were determined by three variables on panoramic view: evaluation of the space for mandibular M3, vertical position of the mandibular M3 in relation to occlusal plane, and spatial relationship between the mandibular second molar (M2 and M3. Results: In girls, there was a significant relationship between the retromolar space in both sides of the jaw and different vertical skeletal malocclusions (P

  2. 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.

  3. 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.

    Science.gov (United States)

    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; Santin, Alessandro D

    2014-01-01

    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 between patients who underwent NACT versus primary debulking; we characterize in vitro chemosensitivity to paclitaxel/patupilone of cell lines established from this patient population, and class III β-tubulin expression following repeated exposure to paclitaxel. Using immunohistochemistry, we observed among 22 paired specimens obtained before/after NACT decreased expression of class III β-tubulin following therapy within stroma (p=0.07), but not tumor (p=0.63). Poor median overall survival was predicted by high levels of class III β-tubulin in both tumor (HR 3.66 [1.11,12.05], p=0.03) and stroma (HR 4.53 [1.28,16.1], p=0.02). Class III β-tubulin expression by quantitative-real-time-polymerase-chain-reaction was higher among patients who received NACT (n=12) compared to primary cytoreduction (n=14) (mean±SD fold-change: 491.2±115.9 vs. 224.1±55.66, p=0.037). In vitro subculture with paclitaxel resulted in class III β-tubulin upregulation, however, cell lines that overexpressed class III β-tubulin remained sensitive to patupilone. Overexpression of class III β-tubulin in patients dispositioned to NACT may thus identify an intrinsically aggressive phenotype, and predict poor overall survival and paclitaxel resistance. Decreases in stromal expression may represent normalization of the tumor microenvironment following therapy. Epothilones warrant study for patients who have received neoadjuvant carboplatin and paclitaxel. PMID:24005572

  4. 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.

  5. 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

  6. 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...

  7. 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...

  8. 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...

  9. 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. PMID:22782559

  10. 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.

  11. 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. 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

  12. TGF-β-stimulated aberrant expression of class III β-tubulin via the ERK signaling pathway in cultured retinal pigment epithelial cells

    International Nuclear Information System (INIS)

    Highlights: ► TGF-β induces aberrant expression of βIII in RPE cells via the ERK pathway. ► TGF-β increases O-GlcNAc modification of βIII in RPE cells. ► Mature RPE cells have the capacity to express a neuron-associated gene by TGF-β. -- Abstract: The class III β-tubulin isotype (βIII) 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 β-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-β (TGF-β) 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-β on the aberrant expression of class III β-tubulin and the intracellular signaling pathway mediating these changes. TGF-β-induced aberrant expression and O-linked-β-N-acetylglucosamine (O-GlcNac) modification of class III β-tubulin in cultured RPE cells as determined using Western blotting, RT-PCR and immunocytochemistry. TGF-β also stimulated phosphorylation of ERK. TGF-β-induced aberrant expression of class III β-tubulin was significantly reduced by pretreatment with U0126, an inhibitor of ERK phosphorylation. Our findings indicate that TGF-β stimulated aberrant expression of class III β-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-β stimulation and provide useful information towards understanding the pathogenesis of proliferative vitreoretinal diseases.

  13. Assessment of the changes in quality of life of patients with class II and III deformities during and after orthodontic-surgical treatment.

    Science.gov (United States)

    Baherimoghaddam, T; Tabrizi, R; Naseri, N; Pouzesh, A; Oshagh, M; Torkan, S

    2016-04-01

    The aim of this longitudinal study was to assess and compare the oral health-related quality of life (OHRQoL) of patients with class II and III deformities during and after orthodontic-surgical treatment. Thirty class III and 28 class II patients were evaluated at baseline (T0), just prior to surgery (T1), at 6 months after surgery (T2), and at 12 months after debonding (T3). OHRQoL was assessed using the Oral Health Impact Profile (OHIP-14). Friedman two-way analysis of variance and the Wilcoxon signed-rank test were performed to compare the relative changes in OHRQoL during treatment. Significant changes in the overall OHIP-14 scores were observed during and after orthodontic-surgical treatment in both groups. During the pre-surgical stage, psychological discomfort and psychological disability decreased in class III patients, and class II patients experienced a significant deterioration in psychological discomfort during the same period. Six months after surgery, patients in both groups showed improvements in psychological discomfort, social disability, and handicap. Physical disability and functional limitation showed further improvement at 12 months after debonding in class II patients. This study reaffirms that orthodontic-surgical treatment has a significant effect on the OHRQoL of class III and class II patients. PMID:26603194

  14. 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)

  15. 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

  16. 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...

  17. 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,...

  18. Prevalence of malocclusion among adolescents in South Indian population

    OpenAIRE

    Kaur, H.; Pavithra, U. S.; Abraham, R

    2013-01-01

    Objective: To record prevalence of malocclusion among 2,400 adolescents in Karnataka state, India and to define difference in malocclusion status in urban and rural population. Design: Randomized cross-sectional study. Setting: School students of Karnataka state, 24 August 2011 to 30 March 2012. Participants: School students in the age group of 13-17 years. Materials and Methods: Each individual was assessed for occlusal traits - sagittal occlusion, overjet, overbite, crowding, midline diaste...

  19. Lower incisor position in different malocclusions and facial patterns

    OpenAIRE

    Hernández Sayago, Estrella; Espinar Escalona, E.; Barrera Mora, José Mª; Ruiz Navarro, María Belén; Llamas Carreras, José María; Solano Reina, Enrique

    2013-01-01

    Introduction: The position of lower incisor has been of considerable concern when planning an orthodontic treatment, having been recognized as one of diagnostic keys, Very important in the development of malocclusion and facial pattern. Objectives: In this study we claim to determine the importance of the position and inclination of lower incisor in the different malocclusions and facial patterns, and to base which of the cephalometric measurement parameters are the mostreliable. Material and...

  1. Genetics of the dentofacial variation in human malocclusion

    OpenAIRE

    Moreno Uribe, L. M.; Miller, S. F.

    2015-01-01

    Malocclusions affect individuals worldwide, resulting in compromised function and esthetics. Understanding the etiological factors contributing to the variation in dentofacial morphology associated with malocclusions is the key to develop novel treatment approaches. Advances in dentofacial phenotyping, which is the comprehensive characterization of hard and soft tissue variation in the craniofacial complex, together with the acquisition of large-scale genomic data have started to unravel gene...

  2. Lower incisor position in different malocclusions and facial patter

    OpenAIRE

    Hernández-Sayago, Estrella; Espinar-Escalona, E; Barrera Mora, José María; Ruiz-Navarro, Maria-Belén; Llamas, J.M.; Solano Reina, Enrique

    2013-01-01

    Introduction: The position of lower incisor has been of considerable concern when planning an orthodontic treatment, having been recognized as one of diagnostic keys, Very important in the development of malocclusion and facial pattern. Objectives: In this study we claim to determine the importance of the position and inclination of lower incisor in the different malocclusions and facial patterns, and to base which of the cephalometric measurement parameters are the mostreliable. Materi...

  3. 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

  4. 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)

  5. 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

  6. Botrytis cinerea virulence is drastically reduced after disruption of chitin synthase class III gene (Bcchs3a).

    Science.gov (United States)

    Soulié, Marie-Christine; Perino, Claude; Piffeteau, Annie; Choquer, Mathias; Malfatti, Pierrette; Cimerman, Agnès; Kunz, Caroline; Boccara, Martine; Vidal-Cros, Anne

    2006-08-01

    Botrytis cinerea is an important phytopathogenic fungus requiring new methods of control. Chitin biosynthesis, which involves seven classes of chitin synthases, could be an attractive target. A fragment encoding one of the class III enzymes was used to disrupt the corresponding Bcchs3a gene in the B. cinerea genome. The resulting mutant exhibited a 39% reduction in its chitin content and an 89% reduction in its in vitro chitin synthase activity, compared with the wild-type strain. Bcchs3a mutant was not affected in its growth in liquid medium, neither in its production of sclerotia, micro- and macroconidia. In contrast, the mutant Bcchs3a was severely impaired in its growth on solid medium. Counterbalancing this defect in radial growth, Bcchs3a mutant presented a large increase in hyphal ramification, resulting in an enhanced aerial growth. Observations by different techniques of microscopy revealed a thick extracellular matrix around the hyphal tips. Moreover, Bcchs3a mutant had a largely reduced virulence on Vitis vinifera and Arabidopsis thaliana leaves. PMID:16882034

  7. 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

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Directory of Open Access Journals (Sweden)

    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.

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

    Science.gov (United States)

    Marques, Leandro Silva; Alcântara, Carlos Eduardo Pinto; Pereira, Luciano José; Ramos-Jorge, Maria Letícia

    2015-01-01

    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. PMID:25760064

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

    Directory of Open Access Journals (Sweden)

    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.

  13. Preventing an identity crisis: unexpected co-expression of class III beta-tubulin and glial fibrillary acidic protein in human fetal astrocytes in culture

    Czech Academy of Sciences Publication Activity Database

    Katsetos, C.D.; Dráberová, Eduarda; Del Valle, L.; Bertrand, L.; Agamanolis, D.P.; de Chadarévian, J.-P.; Legido, A.; Dráber, Pavel

    2007-01-01

    Roč. 26, č. 11 (2007), s. 107-107. ISSN 0364-5134 R&D Projects: GA MŠk LC545; GA ČR GA204/05/2375 Institutional research plan: CEZ:AV0Z50520514 Keywords : class III beta-tubulin * fetal glia Subject RIV: EB - Genetics ; Molecular Biology

  14. Dance-based exercise program in rheumatoid arthritis. Feasibility in individuals with American College of Rheumatology functional class III disease.

    Science.gov (United States)

    Noreau, L; Moffet, H; Drolet, M; Parent, E

    1997-01-01

    Many studies have demonstrated that aerobic exercise training is beneficial to prevent physical deconditioning in persons with rheumatoid arthritis (RA) without inducing adverse effects on individual's joints and general health. After significant results in individuals with RA (Functional Class I and II), the present study was conducted to demonstrate the feasibility of a modified dance-based exercise program to improve the physical fitness and psychological state of persons with RA (Class III). Ten (10) female subjects (mean age, 54 +/- 10 years) participated in an eight-week exercise program (twice weekly). Health status, use of medication, joint pain and swelling, cardiorespiratory fitness, activity of daily living, and psychological state were assessed before and after the training program. A high level of participation has been maintained by the participants (mean = 14.8/16 sessions). Most of them were able to perform a maximal exercise test on treadmill and reached 90% of the predicted heart rate at maximal exercise. No significant gain in aerobic power was observed for the group as a whole, but four subjects showed improvements of between 10% and 20% of their cardiorespiratory fitness. Positive changes in depression, anxiety, fatigue, and tension were observed after the eight-week exercise program. No deleterious effect on the health status was observed. These findings provide some evidences as to the feasibility of submitting individuals with RA to a modified dance-exercise program. Further studies, however, are required to determine the long-term effect of weight-bearing exercise on the health status of individuals with RA. PMID:9129516

  15. A Survey of Nucleotide Cyclases in Actinobacteria: Unique Domain Organization and Expansion of the Class III Cyclase Family in Mycobacterium tuberculosis

    Directory of Open Access Journals (Sweden)

    Sandhya S. Visweswariah

    2004-01-01

    Full Text Available Cyclic nucleotides are well-known second messengers involved in the regulation of important metabolic pathways or virulence factors. There are six different classes of nucleotide cyclases that can accomplish the task of generating cAMP, and four of these are restricted to the prokaryotes. The role of cAMP has been implicated in the virulence and regulation of secondary metabolites in the phylum Actinobacteria, which contains important pathogens, such as Mycobacterium tuberculosis, M. leprae, M. bovis and Corynebacterium, and industrial organisms from the genus Streptomyces. We have analysed the actinobacterial genome sequences found in current databases for the presence of different classes of nucleotide cyclases, and find that only class III cyclases are present in these organisms. Importantly, prominent members such as M. tuberculosis and M. leprae have 17 and 4 class III cyclases, respectively, encoded in their genomes, some of which display interesting domain fusions seen for the first time. In addition, a pseudogene corresponding to a cyclase from M. avium has been identified as the only cyclase pseudogene in M. tuberculosis and M. bovis. The Corynebacterium and Streptomyces genomes encode only a single adenylyl cyclase each, both of which have corresponding orthologues in M. tuberculosis. A clustering of the cyclase domains in Actinobacteria reveals the presence of typical eukaryote-like, fungi-like and other bacteria-like class III cyclase sequences within this phylum, suggesting that these proteins may have significant roles to play in this important group of organisms.

  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. 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)

  18. Biochemical characterization of a recombinant plant class III chitinase from the pitcher of the carnivorous plant Nepenthes alata.

    Science.gov (United States)

    Ishisaki, Kana; Arai, Sachiko; Hamada, Tatsuro; Honda, Yuji

    2012-11-01

    A class III chitinase belonging to the GH18 family from Nepenthes alata (NaCHIT3) was expressed in Escherichia coli. The enzyme exhibited hydrolytic activity toward colloidal chitin, ethylene glycol chitin, and (GlcNAc)(n) (n=5 and 6). The enzyme hydrolyzed the fourth glycosidic linkage from the non-reducing end of (GlcNAc)(6). The anomeric form of the products indicated it was a retaining enzyme. The colloidal chitin hydrolytic reaction displayed high activity between pH 3.9 and 6.9, but the pH optimum of the (GlcNAc)(6) hydrolytic reaction was 3.9 at 37 °C. The optimal temperature for activity was 65 °C in 50 mM sodium acetate buffer (pH 3.9). The pH optima of NaCHIT3 and NaCHIT1 might be related to their roles in chitin degradation in the pitcher fluid. PMID:23026711

  19. SPITZER INFRARED SPECTROGRAPH OBSERVATIONS OF CLASS I/II OBJECTS IN TAURUS: COMPOSITION AND THERMAL HISTORY OF THE CIRCUMSTELLAR ICES

    International Nuclear Information System (INIS)

    We present observations of Taurus-Auriga Class I/II protostars obtained with the Spitzer InfraRed Spectrograph. Detailed spectral fits to the 6 and 15.2 micron ice 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% CO2 (abundance relative to H2O), ∼>2%-9% CH3OH, ∼14% NH3, ∼3% CH4, ∼2% H2CO, ∼0.6% HCOOH, and ∼0.5% SO2. We find CO2/H2O ratios nearly equivalent to those observed in cold clouds and lines of sight toward the galactic center. The unidentified 6.8 micron profiles vary from source to source, and it is shown to be likely that even combinations of the most common candidates (NH+4 and CH3OH) are inadequate to explain the feature fully. We discuss correlations among SED spectral indices, abundance ratios, and thermally processed ice fractions and their implications for CO2 formation and evolution. Comparison of our spectral fits with cold molecular cloud sight lines indicates abundant prestellar ice environments made even richer by the radiative effects of protostars. Our results add additional constraints and a finer level of detail to current full-scale models of protostellar and protoplanetary systems.

  20. 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 ...

  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. 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

    Directory of Open Access Journals (Sweden)

    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.

  3. 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.

  4. Malocclusion in the jaws of captive bred Arctic wolves

    Science.gov (United States)

    Federoff, N.E.

    1996-01-01

    Similar abnormalities in the skulls of captive Arctic Wolves (Canis lupus arctos) and a wild Arctic wolf found dead on Ellesmere Island, Canada, in 1986 are described. The malocclusion is likely to be recessively inherited and would be expressed more frequently in association with increased levels of inbreeding. A re-shaping of the skulls may have occurred due to the effects of the malocclusive trait. The Ellesmere skull was short and wide in comparison to the captive skulls which were long and narrow. The focus of effect was in a foreshortening of the rostrum and the resulting shortened toothrow.

  5. 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

  6. Functional characterization of a class III acid endochitinase from the traps of the carnivorous pitcher plant genus, Nepenthes.

    Science.gov (United States)

    Rottloff, Sandy; Stieber, Regina; Maischak, Heiko; Turini, Florian G; Heubl, Günther; Mithöfer, Axel

    2011-08-01

    Carnivory in plants is an adaptation strategy to nutrient-poor environments and soils. Carnivorous plants obtain some additional mineral nutrients by trapping and digesting prey; the genus Nepenthes is helped by its specialized pitcher traps. To make the nutrients available, the caught prey needs to be digested, a process that requires the concerted activity of several hydrolytic enzymes. To identify and investigate the various enzymes involved in this process, fluid from Nepenthes traps has been analysed in detail. In this study, a novel type of Nepenthes endochitinase was identified in the digestion fluid of closed pitchers. The encoding endochitinase genes have been cloned from eight different Nepenthes species. Among these, the deduced amino acid sequence similarity was at least 94.9%. The corresponding cDNA from N. rafflesiana was heterologously expressed, and the purified protein, NrChit1, was biochemically characterized. The enzyme, classified as a class III acid endochitinase belonging to family 18 of the glycoside hydrolases, is secreted into the pitcher fluid very probably due to the presence of an N-terminal signal peptide. Transcriptome analyses using real-time PCR indicated that the presence of prey in the pitcher up-regulates the endochitinase gene not only in the glands, which are responsible for enzyme secretion, but at an even higher level, in the glands' surrounding tissue. These results suggest that in the pitchers' tissues, the endochitinase as well as other proteins from the pitcher fluid might fulfil a different, primary function as pathogenesis-related proteins. PMID:21633084

  7. Reductions in knee joint forces with weight loss are attenuated by gait adaptations in class III obesity.

    Science.gov (United States)

    DeVita, Paul; Rider, Patrick; Hortobágyi, Tibor

    2016-03-01

    A consensus exists that high knee joint forces are a precursor to knee osteoarthritis and weight loss reduces these forces. Because large weight loss also leads to increased step length and walking velocity, knee contact forces may be reduced less than predicted by the magnitude of weight loss. The purpose was to determine the effects of weight loss on knee muscle and joint loads during walking in Class III obese adults. We determined through motion capture, force platform measures and biomechanical modeling the effects of weight loss produced by gastric bypass surgery over one year on knee muscle and joint loads during walking at a standard, controlled velocity and at self-selected walking velocities. Weight loss equaling 412N or 34% of initial body weight reduced maximum knee compressive force by 824N or 67% of initial body weight when walking at the controlled velocity. These changes represent a 2:1 reduction in knee force relative to weight loss when walking velocity is constrained to the baseline value. However, behavioral adaptations including increased stride length and walking velocity in the self-selected velocity condition attenuated this effect by ∼50% leading to a 392N or 32% initial body weight reduction in compressive force in the knee joint. Thus, unconstrained walking elicited approximately 1:1 ratio of reduction in knee force relative to weight loss and is more indicative of walking behavior than the standard velocity condition. In conclusion, massive weight loss produces dramatic reductions in knee forces during walking but when patients stride out and walk faster, these favorable reductions become substantially attenuated. PMID:26979878

  8. Differential regulation of meristem size, morphology and organization by the ERECTA, CLAVATA and class III HD-ZIP pathways.

    Science.gov (United States)

    Mandel, Tali; Candela, Héctor; Landau, Udi; Asis, Lior; Zelinger, Einat; Carles, Cristel C; Williams, Leor Eshed

    2016-05-01

    The shoot apical meristem (SAM) of angiosperm plants is a small, highly organized structure that gives rise to all above-ground organs. The SAM is divided into three functional domains: the central zone (CZ) at the SAM tip harbors the self-renewing pluripotent stem cells and the organizing center, providing daughter cells that are continuously displaced into the interior rib zone (RZ) or the surrounding peripheral zone (PZ), from which organ primordia are initiated. Despite the constant flow of cells from the CZ into the RZ or PZ, and cell recruitment for primordium formation, a stable balance is maintained between the distinct cell populations in the SAM. Here we combined an in-depth phenotypic analysis with a comparative RNA-Seq approach to characterize meristems from selected combinations of clavata3 (clv3), jabba-1D (jba-1D) and erecta (er) mutants of Arabidopsis thaliana We demonstrate that CLV3 restricts meristem expansion along the apical-basal axis, whereas class III HD-ZIP and ER pathways restrict meristem expansion laterally, but in distinct and possibly perpendicular orientations. Our k-means analysis reveals that clv3, jba-1D/+ and er lead to meristem enlargement by affecting different aspects of meristem function; for example, clv3 displays an increase in the stem cell population, whereas jba-1D/+ er exhibits an increase in mitotic activity and in the meristematic cell population. Our analyses demonstrate that a combined genetic and mRNA-Seq comparative approach provides a precise and sensitive method to identify cell type-specific transcriptomes in a small structure, such as the SAM. PMID:26989178

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

    Directory of Open Access Journals (Sweden)

    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.

  10. 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

  11. 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...

  12. 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...

  13. Subepithelial Connective Tissue Graft in Combination with a Tunnel Technique for the Treatment of Miller Class II and III Gingival Recessions in Mandibular Incisors: Clinical and Esthetic Results.

    Science.gov (United States)

    Nart, Jose; Valles, Cristina

    2016-01-01

    There is limited evidence regarding the effect of the subepithelial connective tissue graft (SCTG) on root coverage in the mandibular anterior region. A sample of 15 Miller Class II and III recessions were treated in 15 patients using a SCTG with a tunnel technique. After a mean follow-up of 20.53 months, the mean percentage of root coverage was 83.25% for all treated recessions. Furthermore, a statistically significant increase of keratinized tissue was observed at the end of the evaluation period (2.66 mm; P = .001). The combination of tunnel technique and SCTG should be considered a treatment option to obtain root coverage in mandibular incisors with Class II and III recession defects. PMID:27333018

  14. 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...

  15. Class III beta-tubulin is constitutively coexpressed with glial fibrillary acidic protein and nestin in midgestational human fetal astrocytes: implications for phenotypic identity

    Czech Academy of Sciences Publication Activity Database

    Dráberová, Eduarda; Del Valle, L.; Gordon, J.; Marková, Vladimíra; Šmejkalová, Barbora; Bertrand, L.; de Chadarévian, J.-P.; Agamanolis, D.P.; Legido, A.; Khalili, K.; Dráber, Pavel; Katsetos, C.D.

    2008-01-01

    Roč. 67, č. 4 (2008), s. 341-354. ISSN 0022-3069 R&D Projects: GA MŠk LC545; GA ČR GA204/05/2375 Institutional research plan: CEZ:AV0Z50520514 Keywords : astrocytes * class III beta-tubulin * fetal glia Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 5.140, year: 2008

  16. 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.

  17. Epidemiology study of malocclusion children between 6 and 8 years old in city of Curitiba – Paraná

    OpenAIRE

    Marina de Oliveira RIBAS; Bruno ORELLANA; Felipe FRONZA; Gisele Ribas GASPARIM; Guilherme Sfier de MELLO; Maria Luiza Schimidt SIMAS NETA; Romeu Valério KOWALSKI; Rosemari de Castro ARAÚJO

    2004-01-01

    This study appraised 1550 children with ages varying from 6to 8 years in the city of Curitiba, in order to determine theprevalence of malocclusion and its distribution according tothe different ethnic groups. It was selected to participate in thestudy, randomly, a school of 1st degree of the State Net of PublicTeaching of each one of the 9 areas of the City of Curitiba. Allthe racial groups presented a larger incidence of malocclusionof Class I. The Feodermic racial group presented the larges...

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

    Directory of Open Access Journals (Sweden)

    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

  19. Educational Intervention in 7- to 11-year-old Children with Malocclusions. Area VII, Cienfuegos

    OpenAIRE

    Clotilde de la Caridad Mora Pérez; Maylin Gil Rodríguez; Ivette Álvarez Mora; Marisleidy Cardoso Santiago; Pedro Álvarez Rodríguez; Ceida Oliva Romero

    2014-01-01

    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 estab...

  20. 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 ...

  1. 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. PMID:26642595

  2. 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。

  3. 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.

  4. Prevalence of Malocclusion Among Adolescents In Central Anatolia

    OpenAIRE

    Gelgör, İbrahim Erhan; KARAMAN, Ali İhya; Ercan, Ertuḡrul

    2007-01-01

    Objectives The objective of this study was to describe the prevalence of malocclusion in a population of Central Anatolian adolescents in relation to gender. Methods The sample comprised 2329 teenagers (1125 boys and 1204 girls), aged between 12 and 17 years (mean age: 14.6 yrs). Occlusal anteroposterior relationships were assessed using the Angle classification. Other variables examined were overjet, overbite, crowding, midline diastema, posterior crossbite, and scissors bite. Results The re...

  5. Sagittal lip positions in different skeletal malocclusions: a cephalometric analysis

    OpenAIRE

    Joshi, Merina; Wu, Li Peng; Maharjan, Surendra; Regmi, Mukunda Raj

    2015-01-01

    Background The objectives of this paper are to (1) study use of soft tissue analyses advocated by Steiner, Ricketts, Burstone, Sushner and Holdway to develop soft tissue cephalometric norms as baseline data for sagittal lip position in Northeast Chinese adult population, (2) compare the sagittal lip positions in different skeletal malocclusions and (3) compare the sagittal lip positions in Northeast Chinese adults with other reported populations. Methods Lateral cephalometric radiographs of s...

  6. 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

  7. 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

  8. 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.

  9. 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.

  10. 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.

  11. Primary failure of eruption combined with bilateral transmigration of mandibular canines, transposition, torus palatinus, and class III incisor relationship: A rare case report.

    Science.gov (United States)

    Elhag, Salma Babiker Idris; Abdulghani, Ashraf Sidig Idris

    2015-01-01

    Eruption disorders are numerous varying from delayed to complete failure of eruption. Primary failure of eruption (PFE) is a rare condition that involves arrested eruption of teeth with the absence of local or general contributory factors. Another rare and clinically challenging phenomenon is canine transmigration which is the intra-osseous movement of impacted canines across the midline. This report presents the first case of combined failure of eruption of multiple teeth with bilateral mandibular canine transmigration, transposition of upper canine and the first premolar, torus palatinus, and class III incisor relationship in a 33-year-old asymptomatic and nonsyndromic female patient. PMID:26929701

  12. 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...

  13. Lengths of the maxillary central incisor, the nasal bone, and the anterior cranial base in different skeletal malocclusions

    DEFF Research Database (Denmark)

    Arntsen, Torill; Kjær, Inger; Sonnesen, Liselotte

    malocclusions. Material and methods . Incisor, nasal, and cranial base lengths were measured on lateral radiographs of adult patients with skeletal malocclusions, including open bite (n=35), mandibular overjet (n=56), maxillary overjet (n=31), deep bite (n=19), and compared with those of a control group with...... skeletal malocclusions. The present findings, especially the deviation of the upper incisor length in different skeletal malocclusions, are considered relevant for orthodontic diagnostics and treatment....

  14. 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.

  15. 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.

  16. 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.

  17. 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

  18. The class III anti-arrhythmic agent, amiodarone, inhibits voltage-dependent K(+) channels in rabbit coronary arterial smooth muscle cells.

    Science.gov (United States)

    Li, Hongliang; Kim, Han Sol; Kim, Hye Won; Shin, Sung Eun; Jung, Won-Kyo; Ha, Kwon-Soo; Han, Eun-Taek; Hong, Seok-Ho; Firth, Amy L; Bae, Young Min; Choi, Il-Whan; Park, Won Sun

    2016-07-01

    We examined the inhibitory effect of amiodarone, a class III anti-arrhythmic agent, on voltage-dependent K(+) (Kv) currents in freshly isolated rabbit coronary arterial smooth muscle cells, using a whole-cell patch clamp technique. Amiodarone inhibited Kv currents in a concentration-dependent manner, with a half-maximal inhibitory concentration (IC50) value of 3.9 ± 1.44 μM and a Hill coefficient of 0.45 ± 0.14. Amiodarone did not have a significant effect on the steady-state activation of Kv channels, but shifted the inactivation current toward a more negative potential. Application of consecutive pulses progressively augmented the amiodarone-induced Kv channel inhibition. Another class III anti-arrhythmic agent, dofetilide, did not inhibit the Kv current or change the inhibitory effect of amiodarone on Kv channels. Therefore, these results strongly suggest that amiodarone inhibits Kv currents in a concentration- and state-dependent manner. PMID:27030392

  19. 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

  20. 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

  1. 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

  2. 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.

  3. 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

  4. Small scale application of stable isotopes 18O and deuterium to delineate migration pathways at a Class III landfill site

    International Nuclear Information System (INIS)

    Groundwater beneath a Class Ill landfill situated between two overland flow wastewater treatment operations within a 2.5 mi2 area was characterized with respect to the stable isotopes of water. The isotope ratios obtained were combined with chemical, geologic, and piezometric data to interpret patterns of mixing and flow. This inexpensive method proved to be useful in differentiating different source waters from background groundwater, and provided information useful for determining probable contaminant sources

  5. [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

  6. 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

  7. Justicidin A-induced autophagy flux enhances apoptosis of human colorectal cancer cells via class III PI3K and Atg5 pathway.

    Science.gov (United States)

    Won, Shen-Jeu; Yen, Cheng-Hsin; Liu, Hsiao-Sheng; Wu, Shan-Ying; Lan, Sheng-Hui; Jiang-Shieh, Ya-Fen; Lin, Chun-Nan; Su, Chun-Li

    2015-04-01

    Our previous reports showed that justicidin A (JA), a novel and pure arylnaphthalide lignan isolated from Justicia procumbens, induces apoptosis of human colorectal cancer cells and hepatocellular carcinoma cells, leading to the suppression of both tumor cell growth in NOD-SCID mice. Here, we reveal that JA induces autophagy in human colorectal cancer HT-29 cells by conversion of autophagic marker LC3-I to LC3-II. Furthermore, LC3 puncta and autophagic vesicle formation, and SQSTM1/p62 suppression were observed. Administration of autophagy inhibitor (bafilomycin A1 and chloroquine) and transfection of a tandem fluorescent-tagged LC3 (mRFP-GFP) reporter plasmid (ptfLC3) demonstrated that JA induces autophagy flux in HT-29 cells. Expression of LC3, SQSTM1, Beclin 1, and nuclear DNA double-strand breaks (representing apoptosis) were also detected in the tumor tissue of HT-29 cells transplanted into NOD-SCID mice orally administrated with JA. In addition, the expression of autophagy signaling pathway-related molecules p-PDK1, p-mTOR, p-p70S6k/p-RPS6KB2 was decreased, whereas that of class III PI3K, Beclin 1, Atg5-Atg12, and mitochondrial BNIP3 was increased in response to JA. Pre-treatment of the cells with class III PI3K inhibitor 3-methyladenine or Atg5 shRNA attenuated JA-induced LC3-II expression and LC3 puncta formation, indicating the involvement of class III PI3K and Atg5. A novel mechanism was demonstrated in the anticancer compound JA; pre-treatment with 3-methyladenine or Atg5 shRNA blocked JA-induced suppression in cell growth and colony formation, respectively, via inhibition of apoptosis. In contrast, administration of apoptosis inhibitor Z-VAD did not affect JA-induced autophagy. Our data suggest the chemotherapeutic potential of JA for treatment of human colorectal cancer. PMID:25216025

  8. Study on Tensile Fatigue Behavior of Thermal Butt Fusion in Safety Class III High-Density Polyethylene Buried Piping in Nuclear Power Plants

    International Nuclear Information System (INIS)

    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

  9. Heart-cutting two-dimensional liquid chromatography methods for quantification of 2-acetyl-4-(1,2,3,4-tetrahydroxybutyl)imidazole in Class III caramel colours.

    Science.gov (United States)

    Moretton, Cédric; Crétier, Gérard; Nigay, Henri; Rocca, Jean-Louis

    2008-07-11

    Heart-cutting two-dimensional liquid chromatography/UV detection methods were developed to determine 2-acetyl-4-(1,2,3,4-tetrahydroxybutyl)imidazole (noted as THI) in Class III caramel colours. In the first dimension, the caramel sample diluted in water was fractionated either by reversed-phase chromatography on C18 silica packing or by ion-exchange chromatography using strong cationic exchanger (SCX) stationary phase. In each case, THI elution domain was recovered in a loop and transferred to a second column packed with porous graphitic carbon (PGC) for the selective separation of THI. From the accuracy profiles with acceptance limit fixed at 20% and beta-expectation tolerance interval fixed at 90%, the two methods, C18-PGC and SCX-PGC, were validated for THI/caramel ratios included between 5-50 and 10-50 ppm, respectively. Finally, the two methods were compared for the analysis of numerous caramel samples. PMID:18538331

  10. 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.

  11. BIPHASIC TREATMENT OF 2ND CLASS ANGLE ANOMALIES

    Directory of Open Access Journals (Sweden)

    C. Romanec

    2011-09-01

    Full Text Available Our approach aims at presenting, based on clinical observations and complementary examinations, the effects of a treatment’s setting up during the mixed dentition period. The objectives include the identification of the optimal time of treatment of II/1, II/2 Angle malocclusions, as well as the therapeutic possibilities for the treatment of 2nd class Angle malocclusion during the period of mixed and permanent dentition. The study is based on data collected from 114 clinical cases (69 girls and 45 boys with an age span between 7 and 18 years.

  12. 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

    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 provided to this

  13. 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

  14. 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

  15. 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

  16. 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.

  17. 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...

  18. 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 ...

  19. 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.

  20. Avaliação da profundidade do palato e das dimensões do arco dentário superior em indivíduos com má oclusão e diferentes tipos faciais Evaluation of palatine depth and dimensions of the upper dental arch in patients with malocclusion and different facial types

    Directory of Open Access Journals (Sweden)

    Andrea Esteves

    2007-01-01

    evaluate palatine depth and dimensions of the upper dental arch in patients with malocclusion and different facial types. METHODS: The sample was constituted of profile cephalograms and dental casts of 135 individuals, 67 females and 68 males, with age between 12 to 21 years and malocclusions: Class I (n = 45, Class II (n = 45 and Class III (n = 45, Angle. The sample was divided in three groups, according to the facial type: brachyfacial (n = 45, mesofacial (n = 45 and dolichofacial (n = 45. The transversal dimensions (intercuspids and inter-first molars distances and upper dental arch length were obtained with auxiliary of digital caliper. In order, to obtain palatine depth measurement was used a special equipment developed and adapted to the digital caliper. RESULTS AND CONCLUSION: Based on our results, we concluded that: (1 no statistically significant differences between these measurements were found considering the facial types, except for the palatine depth, that was smaller in brachyfacial group (18.18mm than dolichofacial group (19.52mm; (2 according to sex, only two variables, the depth palatine and inter-first molar distance, demonstrated statistically significant differences, that appeared to be bigger in males than females; (3 according to the malocclusion, statistically significant differences between these measurements were found only to the upper dental arch length, that was bigger in Class II group (31.23mm than Class III group (29.64mm.

  1. Malocclusion and deleterious oral habits among adolescents in a developing area in northeastern Brazil

    OpenAIRE

    Erika Bárbara Abreu Fonseca Thomaz; Maria Cristina Teixeira Cangussu; Ana Marlúcia Oliveira Assis

    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 ...

  2. Prevalence of malocclusions in the 13-20-year-old categories of football athletes

    OpenAIRE

    Luci Alves de Souza; Thais Regina Elmadjian; Reinaldo Brito e Dias; Neide Pena Coto

    2011-01-01

    The dentist can offer athletes improvement in their physical performance through the maintenance of oral health, preventing and treating any and all changes in the stomatognathic system, such as dental malocclusions, that compromise the athletes' performance. The objective of this study is to research the presence of dental malocclusions in athletes of the category between 13 and 20 years of age, from the São Paulo Football Club. 84 athletes participated in this study, dealing with the follow...

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

    OpenAIRE

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

    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 th...

  4. A three-dimensional finite element analysis of the relationship between masticatory performance and skeletal malocclusion

    OpenAIRE

    Park, Jung-Chul; Shin, Hyun-Seung; Cha, Jung-Yul; Park, Jong-Tae

    2015-01-01

    Purpose The aim of this study was to evaluate the transfer of different occlusal forces in various skeletal malocclusions using finite element analysis (FEA). Methods Three representative human cone-beam computed tomography (CBCT) images of three skeletal malocclusions were obtained from the Department of Orthodontics, Yonsei University Dental Hospital, Seoul, South Korea. The CBCT scans were read into the visualization software after separating bones and muscles by uploading the CBCT images ...

  5. Severity of malocclusion in adolescents: populational-based study in the north of Minas Gerais, Brazil

    OpenAIRE

    Marise Fagundes Silveira; Rafael Silveira Freire; Marcela Oliveira Nepomuceno; Andrea Maria Eleutério de Barros Lima Martins; Luiz Francisco Marcopito

    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 adopte...

  6. 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

  7. 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 ...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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

  13. 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

  14. 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...

  15. Ion pairing with bile salts modulates intestinal permeability and contributes to food-drug interaction of BCS class III compound trospium chloride.

    Science.gov (United States)

    Heinen, Christian A; Reuss, Stefan; Amidon, Gordon L; Langguth, Peter

    2013-11-01

    In the current study the involvement of ion pair formation between bile salts and trospium chloride (TC), a positively charged Biopharmaceutical Classification System (BCS) class III substance, showing a decrease in bioavailability upon coadministration with food (negative food effect) was investigated. Isothermal titration calorimetry provided evidence of a reaction between TC and bile acids. An effect of ion pair formation on the apparent partition coefficient (APC) was examined using (3)H-trospium. The addition of bovine bile and bile extract porcine led to a significant increase of the APC. In vitro permeability studies of trospium were performed across Caco-2-monolayers and excised segments of rat jejunum in a modified Ussing chamber. The addition of bile acids led to an increase of trospium permeation across Caco-2-monolayers and rat excised segments by approximately a factor of 1.5. The addition of glycochenodeoxycholate (GCDC) was less effective than taurodeoxycholate (TDOC). In the presence of an olive oil emulsion, a complete extinction of the permeation increasing effects of bile salts was observed. Thus, although there are more bile acids in the intestine in the fed state compared to the fasted state, these are not able to form ion pairs with trospium in fed state, because they are involved in the emulsification of dietary fats. In conclusion, the formation of ion pairs between trospium and bile acids can partially explain its negative food effect. Our results are presumably transferable to other organic cations showing a negative food effect. PMID:23750707

  16. 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

  17. 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.

  18. 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.

  19. Malocclusion in Elementary School Children in Beirut: Severity and Related Social/Behavioral Factors

    Directory of Open Access Journals (Sweden)

    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.

  20. Malocclusion and deleterious oral habits among adolescents in a developing area in northeastern Brazil

    Directory of Open Access Journals (Sweden)

    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.

  1. 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

  2. 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

  3. Impact of traumatic dental injuries and malocclusions on quality of life of young children

    Directory of Open Access Journals (Sweden)

    Bönecker Marcelo

    2011-09-01

    Full Text Available Abstract Background The presence of traumatic dental injuries and malocclusions can have a negative impact on quality of life of young children and their parents, affecting their oral health and well-being. The aim of this study was to assess the impact of traumatic dental injuries and anterior malocclusion traits on the Oral Health-Related Quality of Life (OHRQoL of children between 2 and 5 years-old. Methods Parents of 260 children answered the six domains of the Early Childhood Oral Health Impact Scale (ECOHIS on their perception of the OHRQoL (outcome. Two calibrated dentists assessed the types of traumatic dental injuries (Kappa = 0.9 and the presence of anterior malocclusion traits (Kappa = 1.0. OHRQoL was measured using the ECOHIS. Poisson regression was used to associate the type of traumatic dental injury and the presence of anterior malocclusion traits to the outcome. Results The presence of anterior malocclusion traits did not show a negative impact on the overall OHRQoL mean or in each domain. Only complicated traumatic dental injuries showed a negative impact on the symptoms (p = 0.005, psychological (p = 0.029, self image/social interaction (p = 0.004 and family function (p = 0.018 domains and on the overall OHRQoL mean score (p = 0.002. The presence of complicated traumatic dental injuries showed an increased negative impact on the children's quality of life (RR = 1.89; 95% CI = 1.36, 2.63; p Conclusions Complicated traumatic dental injuries have a negative impact on the OHRQoL of preschool children and their parents, but anterior malocclusion traits do not.

  4. 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.

  5. Impact of traumatic dental injuries and malocclusions on quality of life of young children

    OpenAIRE

    Bönecker Marcelo; Wanderley Marcia T; Mendes Fausto M; Carvalho Thiago S; Abanto Jenny; Aldrigui Janaina M; Raggio Daniela P

    2011-01-01

    Abstract Background The presence of traumatic dental injuries and malocclusions can have a negative impact on quality of life of young children and their parents, affecting their oral health and well-being. The aim of this study was to assess the impact of traumatic dental injuries and anterior malocclusion traits on the Oral Health-Related Quality of Life (OHRQoL) of children between 2 and 5 years-old. Methods Parents of 260 children answered the six domains of the Early Childhood Oral Healt...

  6. Analysis of HLA class I-II haplotype frequency and segregation in a cohort of patients with advanced stage ovarian cancer.

    Science.gov (United States)

    Gamzatova, Z; Villabona, L; van der Zanden, H; Haasnoot, G W; Andersson, E; Kiessling, R; Seliger, B; Kanter, L; Dalianis, T; Bergfeldt, K; Masucci, G V

    2007-09-01

    In solid tumors, human leucocyte antigen (HLA)-A2 has been suggested to be a risk factor and a negative prognostic factor. The HLA-A2 allele in Scandinavia has a high prevalence; it decreases with latitude and also with ovarian cancer mortality in Europe. Furthermore, an association of the HLA-A2 allele with severe prognosis in serous adenocarcinoma of the ovary in stages III-IV was found. Thirty-two unrelated Swedish women with relapsing or progressive ovarian cancer were analysed for the genotypes at the HLA-A, HLA-B, HLA-Cw, and HLA-DRB1 loci by the polymerase chain reaction/sequence-specific primer method. The frequencies of HLA alleles of healthy Swedish bone marrow donors provided by the coordinating centre of the Bone Marrow Donors Worldwide Registries, Leiden, the Netherlands were used as controls. When this cohort of epithelial ovarian cancer patients was compared with healthy Swedish donors, the frequency of HLA-A1 and HLA-A2 gene/phenotype appears, although not statistically significant, to be increased in patients with ovarian carcinoma, while HLA-A3 was decreased. HLA-A2 homozygotes were twofold higher in patients. The A2-B8 haplotype was significantly increased (corrected P value). A2-B5, A2-B15, A2-DRB1*03, A2-DRB1*04, A2-B15-Cw3, and A2-B8-DRB1*03 had odds ratio as well as the level of the lower confidence interval above 1 and significant P value only when considered as single, non-corrected analysis. HLA-B15 and HLA-Cw3 were only present in HLA-A2-positive patients showing that the HLA-A2-HLA-Cw3 and HLA-B15 haplotypes were segregated. In this selected cohort with advanced disease, there are indications of an unusual overrepresentation of HLA class I and II genes/haplotypes as well as segregation for the HLA-A2-HLA-Cw3 and HLA-B15 haplotypes. These findings are presented as a descriptive analysis and need further investigations on a larger series of ovarian cancer patients to establish prognostic associations. PMID:17661908

  7. 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

    Directory of Open Access Journals (Sweden)

    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

  8. 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.

  9. 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.

  10. 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.

  11. Multidisciplinary management of congenital and acquired compensated malocclusions: diagnosis, etiology and treatment planning.

    Science.gov (United States)

    Roberts, W E; Hartsfield, J K

    1997-01-01

    Restoration of optimal occlusal function, consistent with desirable esthetics and a favorable long-term prognosis, is the clinical goal for management of compensated malocclusions in partially edentulous patients. An appropriate diagnostic work-up includes a careful assessment of etiology, relative to both genetic and environmental factors. Esthetic and cost-effective restoration of occlusal function often requires adjunctive orthodontic therapy, integrated into a comprehensive treatment plan. Alignment of abutments, management of edentulous space and enhancement of soft tissue contours are important preprosthetic objectives. Osseointegrated dental implants provide occlusal stops to open the vertical dimension of occlusion and serve as rigid anchorage for three-dimensional orthodontic alignment of the residual dentition. Carefully coordinated preprosthetic treatment to establish bilateral posterior occlusion (molars and/or implants) is an important goal for achieving a biomechanically-optimized restoration of occlusion. Fundamental diagnostic and treatment planning procedures are reviewed for the multidisciplinary management of partially edentulous, compensated malocclusions. Determining the probable etiology of a malocclusion is an important prerequisite for formulating a treatment plan with a reasonable probability of success. Diagnostic considerations are presented and clinical examples of specific orthodontic methods are illustrated. To demonstrate the application of fundamental principles at the clinical level, a case report is presented with a diagnosis and treatment plan for a malocclusion with both genetic and functional implications. PMID:9517363

  12. 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.

  13. 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

  14. 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...

  15. 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

  16. Malocclusion in early anatomically modern human: a reflection on the etiology of modern dental misalignment.

    Directory of Open Access Journals (Sweden)

    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.

  17. 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.

  18. 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

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    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

  19. Development of the Malocclusion Impact Questionnaire (MIQ) to measure the oral health-related quality of life of young people with malocclusion: part 2 – cross-sectional validation

    OpenAIRE

    Benson, Philip E.; Cunningham, Susan J; Shah, Nahush; Gilchrist, Fiona; Baker, Sarah R.; Hodges, Samantha J.; Marshman, Zoe

    2016-01-01

    Objective: To test the items, identified through qualitative inquiry that might form the basis of a new Malocclusion Impact Questionnaire (MIQ) to measure the oral health-related quality of life (OHQoL) of young people with malocclusion. Methods: Piloting with 13 young people reduced the number of items from 37 to 28. Cross-sectional testing involved a convenience sample aged 10–16 years, attending the Orthodontic Department of the Charles Clifford Dental Hospital, Sheffield. The fit and func...

  20. Prevalence of gingival diseases, malocclusion and fluorosis in school-going children of rural areas in Udaipur district

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    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%.

  1. 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...

  2. 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,...

  3. Intra- and interobserver agreement in the diagnosis of malocclusion in sleep-disordered breathing

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    Fernando Rodrigues Carvalho

    2014-02-01

    Full Text Available Sleep-disordered breathing (SDB is often related to malocclusion, and dentists should be able to recognize occlusal changes that may be associated with the development, onset, or persistence of SDB. Although clinical examination is routinely used by specialists in orthodontics and functional jaw orthopedics, differences in diagnosis are very common. Method : Two observers, both dentists specializing in functional jaw orthopedics, examined 56 children aged 7 to 9 years. Intra- and interobserver agreement in identification of functional orthopedic and orthodontic conditions were assessed. Results : Intraobserver agreement was strong for all variables. Interobserver agreement was also strong, except for the variable overbite, which showed good agreement. Conclusion : Diagnostic criteria provide an opportunity for dentists to recognize dental malocclusions that may be associated with sleep-disordered breathing.

  4. PENGGUNAAN FACEMASK DALAM PERAWATAN MALOKLUSI DENGAN PROGNATIK MANDIBULA PADA USIA TUMBUH KEMBANG

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    Gina Maringka

    2015-08-01

    Full Text Available Class III malocclusion which caused by disharmonious growth of maxilla and mandible, are considered as a complex and difficult case to be treated. Although there are many debates concerning the result and stability of the treatment, class III malocclusion is still a challenge to be handled. Many orthodontists agreed that treatment should be done since early ages to prevent malocclusion becoming worst, which at the end will need a surgical treatment. This paper will describe the treatment of class III malocclusion on growing patients with variable of difficulties cases. Facemask as orthopedics appliance is chosen to stimulate the growth of maxilla and to modify the growth direction of mandible.

  5. 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...

  6. 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 ...

  7. 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...

  8. Fixed Lingual Mandibular Growth Modificator: a new appliance for Class II correction

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    Osama Hasan Alali

    2013-08-01

    Full Text Available INTRODUCTION: This article demonstrates the description and use of a new appliance for Class II correction. MATERIAL AND METHODS: A case report of a 10-year 5 month-old girl who presented with a skeletally-based Class II division 1 malocclusion (ANB = 6.5º on a slightly low-angle pattern, with ML-NSL angle of 30º and ML-NL angle of 22.5º. Overjet was increased (7 mm and associated with a deep bite. RESULTS: Overjet and overbite reduction was undertaken with the new appliance, Fixed Lingual Mandibular Growth Modificator (FLMGM. CONCLUSION: FLMGM may be effective in stimulating the growth of the mandible and correcting skeletal Class II malocclusions. Clinicians can benefit from the unique clinical advantages that FLMGM provides, such as easy handling and full integration with bracketed appliance at any phase.

  9. The influence of asthma onset and severity on malocclusion prevalence in children and adolescents

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    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.

  10. 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

  11. Impact of malocclusion on oral health-related quality of life among Brazilian preschool children: a population-based study.

    Science.gov (United States)

    Carvalho, Anita Cruz; Paiva, Saul Martins; Viegas, Claudia Marina; Scarpelli, Ana Carolina; Ferreira, Fernanda Morais; Pordeus, Isabela Almeida

    2013-01-01

    The purpose of the present study was to evaluate the impact of malocclusion on Oral Health-Related Quality of Life (OHRQoL) of children and their families. A population-based cross-sectional study was carried out in Belo Horizonte, MG, Brazil. A representative sample of 1069 male and female preschoolers aged 60 to 71 months was randomly selected from public and private preschools and daycare centers. Data were collected using the B-ECOHIS. In addition, a questionnaire addressing socioeconomic and demographic data was self-administered by the parents/guardians. The criteria used to diagnose malocclusion were based on Foster and Hamilton (1969), Graboswki et al. (2007) and Oliveira et al. (2008). Descriptive, univariate and multiple Poison logistic regression analyses were carried out. The prevalence of malocclusion was observed in 46.2% of the children and deep overbite was the most prevalent type of malocclusion (19.7%), followed by posterior crossbite (13.1%), accentuated overjet (10.5%), anterior open bite (7.9%) and anterior crossbite (6.7%). The impact of malocclusion on OHRQoL was 32.7% among the children and 27.1% among the families. In Poisson multiple regression model adjusted for socioeconomic status, no significant association was found between malocclusion and OHRQoL of the children (PR=1.09, 95% CI: 0.96-1.24) and their families (PR=1.11, 95% CI: 0.94-1.31). It is concluded that children with malocclusion in this sample did not have a negative impact on their OHRQoL and of their families. PMID:24474365

  12. Relação entre má oclusão e hábitos em respiradores orais Relationship between malocclusion and oral habits in mouth breathing

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    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

  13. Orthodontic treatment need for adolescents in the Campania region: the malocclusion impact on self-concept

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    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

  14. 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

  15. Quantification of 4-methylimidazole in class III and IV caramel colors: validation of a new method based on heart-cutting two-dimensional liquid chromatography (LC-LC).

    Science.gov (United States)

    Moretton, Cédric; Crétier, Gérard; Nigay, Henri; Rocca, Jean-Louis

    2011-04-27

    4-Methylimidazole (4MeI) is a nitrogen compound formed during the manufacture of class III and IV caramel colors. The European Commission has limited its content to 250 ppm. Two methods were compared to perform 4MeI quantification in caramels. The first one, currently used and considered to be the reference method, consists of a hot extraction of caramel color with dichloromethane and an analysis of the acetyl derivative of the extract by gas chromatography coupled to mass spectrometry (GC-MS). The second method is based on the heart-cutting two-dimensional liquid chromatography technique (LC-LC) to directly separate 4MeI from the other components present in caramel color sample (diluted in water) in caramels. PMID:21381772

  16. 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.

  17. 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.

  18. 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.

  19. 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...

  20. ULOF and unprotected blockage accident analyses of the 400MWth-class EFIT accelerator driven transmuter with the SIMMER-III code

    International Nuclear Information System (INIS)

    In the EUROTRANS Programme of the 6th FP of the EC the EFIT, the European Facility for Industrial Transmutation, a generic conceptual design of a full 400 MWth 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 reactors. Unprotected transients set upper safety limits and play an important role in the overall safety assessment and transient behaviors of MgO based fuel and T91 cladding. Especially the high temperature range is still connected with significant uncertainties, therefore, unprotected accidents with a potential of fuel failure and gas release deserve special attention. In this paper, analyses of the ULOF and the UBA will be presented. Simulations of the core under the steady operation state have been carried out first, whose results show good agreement with the design data. In addition the safety parameters as e.g. the void worth of the core and the Doppler constant have been determined. In the ULOF analysis, the pump head is assumed to be completely lost within 1 or 5 seconds. Due to the loss of the pump head, coolant mass flow rate in the reactor will decrease and finally arrive at its new steady state because of the remained natural convection. Calculated results indicate that, under the current assumptions, the EFIT design can survive a ULOF without fuel pin failure whilst a larger safety margin exists if the pump halving time is longer

  1. Unilateral Maxillary First Molar Extraction in Class II Subdivision: An Unconventional Treatment Alternative

    Science.gov (United States)

    Booij, J. W.; Livas, Christos

    2016-01-01

    The asymmetrical intra-arch relationship in Class II subdivision malocclusion poses challenges in the treatment planning and mechanotherapy of such cases. This case report demonstrates a treatment technique engaging unilateral extraction of a maxillary first molar and Begg fixed appliances. The outcome stability and the enhancing effect on the eruption of the third molar in the extraction segment were confirmed by a 4-year follow-up examination. PMID:27200194

  2. 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 ...

  3. 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

  4. 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 ...

  5. 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.

  6. 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

  7. 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

  8. Caring for class III obese patients.

    Science.gov (United States)

    Gardner, Lea Anne

    2013-11-01

    The Pennsylvania Patient Safety Reporting System is a confidential, statewide Internet reporting system to which all Pennsylvania hospitals, outpatient-surgery facilities, and birthing centers, as well as some abortion facilities, must file information on medical errors.Safety Monitor is a column from Pennsylvania's Patient Safety Authority, the authority that informs nurses on issues that can affect patient safety and presents strategies they can easily integrate into practice. For more information on the authority, visit www.patientsafetyauthority.org. For the original article discussed in this column or for other articles on patient safety, click on "Patient Safety Advisories" and then "Advisory Library" in the left-hand navigation menu. PMID:24149276

  9. 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

  10. Malocclusion prevalence and orthodontic treatment need in central Anatolian adolescents compared to European and other nations' adolescents

    OpenAIRE

    Bilgic, Fundagul; Gelgor, Ibrahim Erhan; Celebi, Ahmet Arif

    2015-01-01

    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 (DH...

  11. Crown and root lengths of incisors, canines, and premolars measured by cone-beam computed tomography in patients with malocclusions

    OpenAIRE

    Kim, Seon-Young; Lim, Sung-Hoon; Gang, Sung-Nam; Kim, Hee-Jin

    2013-01-01

    Objective The purposes of this study were to determine the accuracy of crown and root length measurements of premolars using cone-beam computed tomography (CBCT) and to generate reference CBCT-based data on incisor, canine, and premolar lengths in patients with malocclusions. Methods Imaging was performed using a CBCT scanner with a 0.292-mm voxel size and 12-bit grayscale. The CBCT-based length measurements were compared with direct measurements of 94 subsequently extracted premolars without...

  12. Mathematics III

    OpenAIRE

    Viader Canals, Pelegrí

    2013-01-01

    Apunts de l'assignatura Mathematics III del Grau en International Business Economics del curs 2012-2013. Conté : Diagonalization, Difference Equations, Differential Equations, Lagrange-Kuhn-Tucker, Second order Difference Equations.

  13. [The 3D-printed dental splint: a valuable tool in the surgical treatment of malocclusion after polytrauma].

    Science.gov (United States)

    van de Velde, W L; Schepers, R H; van Minnen, B

    2016-01-01

    A 22-year old male was referred to the Department of Oral and Maxillofacial Surgery of a university clinic 2 months after he had sustained multiple traumatic injuries abroad because of an anterior malocclusion. The malocclusion was the sequel of an unrecognised, untreated, already consolidated paramedian mandibular fracture on the right and a fracture of the contralateral mandibular angle on the left. Preoperatively, a cobalt-chrome 3D-printed dental splint was prepared. Surgical correction of the malocclusion was carried out by segmental osteotomies of the mandible at the original fracture sites. This involved a vertical paramedian osteotomy on the right side and a unilateral sagittal split osteotomy on the left mandibular angle side. The mandibular segment was mobilised in the correct occlusion with the aid of the 3D-printed dental splint. The splint was fixed to the teeth with dental composite. The custom made 3D-printed dental splint is considered a promising procedural innovation in oral and maxillofacial surgery. PMID:26780333

  14. Basel III

    OpenAIRE

    Štrbová, Barbora

    2014-01-01

    The aim of this thesis is to analyze current capital adequacy in Europe under regulatory framework Basel III and compare the state of its implementation within European banks and Slovak financial sector, which is represented by two Slovak case banks. Firstly it is focused on the two previous regulatory frameworks, especially on their capital adequacy and three-pillar structure of Basel II. Then we proceed to present the new regulatory framework Basel III. The third regulatory framework of the...

  15. 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...

  16. A descriptive study of malocclusion in Malian, Cuban and Venezuelan 5-9 year-old children

    Directory of Open Access Journals (Sweden)

    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

  17. 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.

  18. Development of the Malocclusion Impact Questionnaire (MIQ) to measure the oral health-related quality of life of young people with malocclusion: part 2 – cross-sectional validation

    Science.gov (United States)

    Benson, Philip E.; Cunningham, Susan J.; Shah, Nahush; Gilchrist, Fiona; Baker, Sarah R.; Hodges, Samantha J.; Marshman, Zoe

    2016-01-01

    Objective: To test the items, identified through qualitative inquiry that might form the basis of a new Malocclusion Impact Questionnaire (MIQ) to measure the oral health-related quality of life (OHQoL) of young people with malocclusion. Methods: Piloting with 13 young people reduced the number of items from 37 to 28. Cross-sectional testing involved a convenience sample aged 10–16 years, attending the Orthodontic Department of the Charles Clifford Dental Hospital, Sheffield. The fit and function of the initial MIQ questions were examined using item response theory. Results: 184 participants (113 females; 71 males) completed a questionnaire (response 85%), seven participants were excluded due to missing responses. The mean age of participants was 12·9 years (SD 1·4) and they had a wide range of malocclusions. The majority were White British (67·4%). Data from 47 participants were used to analyse test–retest reliability. Rasch analysis was undertaken, which further reduced the number of items in the questionnaire from 28 to 17. Unidimensionality of the scale was confirmed. The analysis also identified that the original 5-point response scale could be reduced to three points. The new measure demonstrated good criterion validity (r = 0·751; P < 0·001) and construct validity with the two global questions (‘Overall bother’ ρ = 0·733 and ‘Life overall’ ρ = 0·701). Internal consistency (Cronbach's alpha = 0·906) and test–retest reliability Intraclass correlation coefficient (ICC = 0·78; 95% CI 0·61–0·88) were also good. Conclusion: Cross-sectional testing has shown the new MIQ to be both valid and reliable. Further evaluation is required to confirm the generalisability as well as the ability of the new measure to detect change over time (responsiveness). PMID:26745783

  19. 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

  20. 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。