Página 1 dos resultados de 1112 itens digitais encontrados em 0.013 segundos

Estudo eletromiográfico do músculo masseter durante o apertamento dentário e mastigação habitual em adultos com oclusão dentária normal; Electromyographic study of the masseter muscle during maximal voluntary clenching and habitual chewing in adults with normal occlusion

RAHAL, Adriana; GOFFI-GOMEZ, Maria Valéria Schmidt
Fonte: Sociedade Brasileira de Fonoaudiologia Publicador: Sociedade Brasileira de Fonoaudiologia
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
56.17%
OBJETIVO: Analisar a diferença entre os lados na atividade eletromiográfica do masseter em indivíduos adultos com oclusão dentária normal. MÉTODOS: Foram avaliados 30 indivíduos saudáveis entre 21 e 30 anos e realizou-se eletromiografia de superfície nos músculos masseteres direito e esquerdo, durante apertamento em máxima intercuspidação e mastigação habitual com uva passa. Foram computados os valores médios dos três apertamentos dentários e dos 15 segundos da mastigação habitual para cada indivíduo. Foram considerados para a análise: o lado de maior valor e o de menor valor eletromiográfico. RESULTADOS: Durante o apertamento dentário, a diferença média entre os dois lados foi de 20,0 microvolts (μV) com intervalo de confiança (95%) entre 14,0 e 26,0 μV e durante a mastigação habitual, a diferença média entre os dois lados foi de 10,3 μV com intervalo de confiança (95%) entre 6,7 e 13,8 μV. CONCLUSÃO: Houve diferença estatisticamente significante entre os lados, com relação entre eles de 24% para o apertamento dentário e de 27% para a mastigação habitual, em indiv duos adultos saudáveis.; PURPOSE: To analyze the difference between both sides of the face during the electromyographic activity of the masseter muscle in adults with normal occlusion. METHODS: Thirty healthy individuals with ages ranging from 21 to 30 years old were selected. Surface electromyography was performed on right and left masseter muscles during maximal voluntary clenching and habitual chewing with raisins. The mean values of three teeth clenching and fifteen seconds of habitual chewing were calculated for each subject. The analysis considered the sides with higher and lower electromyographic activity. RESULTS: During maximal voluntary clenching...

Craniofacial characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion

JANSON, Guilherme; QUAGLIO, Camila Leite; PINZAN, Arnaldo; FRANCO, Eduardo Jacomino; FREITAS, Marcos Roberto de
Fonte: Faculdade De Odontologia De Bauru - USP Publicador: Faculdade De Odontologia De Bauru - USP
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
56.17%
OBJECTIVE: The objective of this study was to compare the skeletal, dental and soft tissue characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion and to evaluate sexual dimorphism within the groups. MATERIAL AND METHODS: The sample comprised lateral cephalograms of untreated normal occlusion subjects, divided into 2 groups. Group 1 included 40 Caucasian subjects (20 of each sex), with a mean age of 13.02 years; group 2 included 40 Afro-Caucasian subjects (20 of each sex), with a mean age of 13.02 years. Groups 1 and 2 and males and females within each group were compared with t tests. RESULTS: Afro-Caucasian subjects presented greater maxillary protrusion, smaller upper anterior face height and lower posterior face height, larger upper posterior face height, greater maxillary and mandibular dentoalveolar protrusion as well as soft tissue protrusion than Caucasian subjects. The Afro-Caucasian female subjects had less mandibular protrusion and smaller total posterior facial height and upper posterior facial height than males. CONCLUSIONS: Brazilian Afro-Caucasian subjects have greater dentoalveolar and soft tissue protrusion than Brazilian Caucasian subjects, with slight sexual dimorphism in some variables.

Tooth-wear patterns in adolescents with normal occlusion and Class II Division 2 malocclusion

OLTRAMARI-NAVARRO, Paula Vanessa Pedron; JANSON, Guilherme; OLIVEIRA, Renata Biella Salles de; QUAGLIO, Camila Leite; HENRIQUES, Jose Fernando Castanha; SALES-PERES, Silvia Helena de Carvalho; MCNAMARA JR., James A.
Fonte: MOSBY-ELSEVIER Publicador: MOSBY-ELSEVIER
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
46.33%
Introduction: In this study, we investigated tooth-wear patterns in adolescents with either normal occlusion or Class II Division 2 malocclusion. Methods: The sample consisted of dental casts from 165 subjects that were divided into 2 groups: 115 normal occlusion subjects (mean age, 14.3 years) and 50 complete Class II Division 2 subjects (mean age, 13.9 years). Dental wear was assessed by using a modified version of the tooth wear index. The 2 groups were compared with the Mann-Whitney test for the frequency and severity of wear on each surface of each group of teeth. The level of statistical significance was set at 5%. Results: The normal occlusion group statistically had greater tooth wear on the incisal surfaces of the maxillary lateral incisors and the incisal surfaces of the maxillary canines than did the Class II Division 2 malocclusion group. The malocclusion group showed statistically greater tooth wear on the labial surfaces of the mandibular lateral incisors, the occlusal surfaces of the maxillary premolars and first molars, the occlusal surfaces of the mandibular premolars, the palatal surfaces of the maxillary second premolars, and the buccal surfaces of the mandibular premolars and first molars than did the normal occlusion group. Conclusions: Subjects with normal occlusion and those with complete Class II Division 2 malocclusions have different tooth-wear patterns. Tooth wear on the malocclusion subjects should not be considered pathologic but...

Tooth-wear patterns in subjects with Class II Division 1 malocclusion and normal occlusion

JANSON, Guilherme; OLTRAMARI-NAVARRO, Paula Vanessa Pedron; OLIVEIRA, Renata Biella Salles de; QUAGLIO, Camila Leite; SALES-PERES, Silvia Helena de Carvalho; TOMPSON, Bryan
Fonte: MOSBY-ELSEVIER Publicador: MOSBY-ELSEVIER
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
46.33%
Introduction: The aim of this study was to investigate the prevalence of tooth wear in adolescents with Class II malocclusion, compared with those with normal occlusion. Methods: The sample consisted of dental casts obtained from 310 subjects, divided into 3 groups: group 1, 110 subjects with normal occlusion (mean age, 13.51 years); group 2, 100 complete Class II Division 1 patients (mean age, 13.44 years); and group 3, 100 half-cusp Class II Division 1 patients (mean age, 13.17 years). Dental wear was assessed by using a modified version of the tooth-wear index. The 3 groups were compared by means of the Kruskal-Wallis and Dunn tests, considering the frequency and the severity of wear on each surface of each group of teeth. The level of statistical significance was set at 5%. Results: The normal occlusion group had statistically greater tooth wear on the palatal surfaces of the maxillary central incisors and the incisal surfaces of the maxillary canines than the corresponding surfaces in both Class II malocclusion groups. The complete and half-cusp Class II Division 1 malocclusion groups had statistically greater tooth wear on the occlusal surfaces of the maxillary second premolar and first molar, the occlusal surfaces of the mandibular premolars...

Contribuição ao estudo das características morfológicas da maxila e incisivos centrais superiores em indivíduos com oclusão normal com vistas ao diagnóstico e planejamento; Contribution to the study of morphological characteristics of the maxilla and the upper central incisors in individuals with normal occlusion aiming diagnosis and planning

Lino, Alael Barreiro Fernandes de Paiva
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 18/04/2008 PT
Relevância na Pesquisa
56.2%
O objetivo deste trabalho foi analisar as características morfológicas da maxila e dos incisivos centrais superiores em relação às dimensões e posicionamento de ambos e verificar as inter-relações entre as variáveis obtidas. A amostra foi constituída de 32 telerradiografias em norma frontal, 32 em norma lateral e 32 modelos ortodônticos em gesso de 32 indivíduos leucodermas, de ambos os gêneros, na faixa etária de 12 anos completos a 17 anos e 1 mês, na dentição permanente, portadores de oclusão dentária normal, residentes na cidade de São Paulo, sem tratamento ortodôntico e todos filhos de brasileiros. Toda amostra foi escaneada e digitalizada, e os dados gerados foram em seguida exportados para programas de análises computadorizados nos quais foram definidas grandezas lineares e angulares diretamente sobre a amostra digitalizada. Os valores obtidos foram repetidos, pelo mesmo operador, com um intervalo mínimo de 15 dias entre as medidas com o objetivo de avaliar o erro do método. Os resultados mostraram compatibilidade com as estimativas de erros operacionais. Inicialmente cada exame foi estudado separadamente e num segundo momento analisadas as diferenças entre os gêneros e os dados correlacionados. Após análise estatística e interpretação dos resultados verificou-se na telerradiografia lateral...

Estudo cefalométrico das estruturas esqueléticas, dentárias e tegumentares, em jovens brasileiros, leucodermas, feodermas e melanodermas, com "oclusão normal"; Cephalometric study of skeletal, dental and soft tissue structures in white, black and afrocaucasian young Brazilian descents with normal occlusion

Freitas, Lívia Maria Andrade de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 07/11/2008 PT
Relevância na Pesquisa
56.11%
Atualmente, as áreas metropolitanas apresentam uma população diversificada, estabelecendo a necessidade de reconhecer que um único padrão de estética facial não é apropriado para as decisões de diagnóstico e plano de tratamento ortodôntico, para indivíduos de várias origens étnicas, que migraram para distintas regiões geográficas. Com o propósito de apresentar a importância de um padrão cefalométrico específico para os jovens brasileiros leucodermas, melanodermas e feodermas, este estudo propôs obter os valores médios de normalidade para as grandezas cefalométricas esqueléticas, dentárias e tegumentares, comparar os valores obtidos entre os grupos étnicos e verificar a presença de dimorfismo entre os gêneros. A amostra constituiu-se de 146 telerradiografias em norma lateral de indivíduos jovens brasileiros não tratados, apresentando oclusão normal, divididos em três grupos: Grupo 1- 50 indivíduos leucodermas (25 de cada gênero) com idade média de 13,17 anos; Grupo 2- 40 indivíduos feodermas (20 de cada gênero) com idade média de 13,12 anos; e Grupo 3- 56 indivíduos melanodermas (28 de cada gênero) com idade média de 13,24 anos. Para a avaliação da compatibilidade intergrupos quanto à idade e comparação dos valores das grandezas cefalométricas...

Avaliação da variabilidade do ângulo nasolabial em repouso e sorrindo em pacientes com oclusão normal e harmonia facial; Evaluation of the variability of the nasolabial Angle in rest and smiling in patients with normal occlusion and facial harmony

Freitas, Daniel Salvatore de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 28/02/2011 PT
Relevância na Pesquisa
56.26%
Devido à incompatibilidade entre as medidas cefalométricas e a análise facial de alguns casos de retrusão de maxila, e a ausência de estudos que indiquem essa variação e sua implicação no diagnóstico e tratamento dos pacientes, o objetivo desta pesquisa foi determinar: a média e o desvio padrão do ângulo nasolabial (ANL) e da medida linear Prn-A em repouso e sorrindo e a diferença entre sorriso e repouso, em indivíduos com oclusão normal e harmonia facial, além de avaliar a presença de dimorfismo sexual. A amostra constituiu-se de 40 participantes brasileiros, sendo 20 de cada sexo, leucodermas, de faixa etária de 20 a 30 anos de idade, com oclusão normal, perfil facial agradável e harmonia facial. Foram analisadas, nas fotografias de perfil em repouso e sorrindo, com uma régua milimetrada à frente do perfil, e com a utilização do programa Dolphin, as medidas ANL e Prn-A. A análise estatística incluiu a estatística descritiva, testes t dependentes para comparar as variáveis em repouso e sorrindo, e testes t independentes para avaliar o dimorfismo sexual. Como resultados, observou-se que: a média do ANL em repouso foi de 104,93º, com desvio padrão de 8,04, e sorrindo, foi de 110,67º, com desvio padrão de 9...

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

Carreiro, Luiz Sérgio; Santos-Pinto, Ary; Raveli, Dirceu Barnabé; Martins, Lídia Parsekian
Fonte: Dental Press Editora Publicador: Dental Press Editora
Tipo: Artigo de Revista Científica Formato: 97-117
POR
Relevância na Pesquisa
56.39%
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...

A discrepância de tamanho dentário, de Bolton, na oclusão normal e nos diferentes tipos de más oclusões, de Angle, bem como sua relação com a forma de arco e o posicionamento dentário

Carreiro, Luiz Sérgio
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Tese de Doutorado Formato: 162 f. : il.
POR
Relevância na Pesquisa
56.39%
Pós-graduação em Odontologia - FOAR; 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, 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...

Mesiodistal root angulation of permanent teeth in children with mixed dentition and normal occlusion

Jesuino,Flávia A. S.; Costa,Luciane R.; Valladares-Neto,José
Fonte: Faculdade De Odontologia De Bauru - USP Publicador: Faculdade De Odontologia De Bauru - USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2010 EN
Relevância na Pesquisa
56.09%
OBJECTIVE: There is little information regarding the mesiodistal angulation of permanent teeth in mixed dentition. The aim of this study was to evaluate mesiodistal root angulation of permanent incisors, canines and first molars of 100 Brazilian children, using a new horizontal reference plane based on the midpoint of the intercuspation of primary canines and permanent first molars in panoramic radiographs during the mixed-dentition phase. MATERIAL AND METHODS: Children were equally divided between the genders with a mean age of 8.9 years (SD=0.76), normal occlusion and no eruptive disturbances. RESULTS: The angulation of the permanent maxillary first molars was close to the vertical, whereas the mandibular molars presented approximately 25 degrees of distal root angulation. The maxillary canines were the most distally angulated teeth, whereas the permanent mandibular canines were vertically positioned. The evaluation of the anterior maxillary area showed vertical position of permanent lateral, and central incisors with a slight distal angulation, whereas the permanent mandibular incisors tended to a mesial radicular convergence. CONCLUSIONS: The proposed reference line could be useful in mixed dentition root angulation evaluation; there was a slight asymmetry in the mesiodistal angulation among homologous teeth...

Craniofacial characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion

Janson,Guilherme; Quaglio,Camila Leite; Pinzan,Arnaldo; Franco,Eduardo Jacomino; Freitas,Marcos Roberto de
Fonte: Faculdade De Odontologia De Bauru - USP Publicador: Faculdade De Odontologia De Bauru - USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2011 EN
Relevância na Pesquisa
56.17%
OBJECTIVE: The objective of this study was to compare the skeletal, dental and soft tissue characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion and to evaluate sexual dimorphism within the groups. MATERIAL AND METHODS: The sample comprised lateral cephalograms of untreated normal occlusion subjects, divided into 2 groups. Group 1 included 40 Caucasian subjects (20 of each sex), with a mean age of 13.02 years; group 2 included 40 Afro-Caucasian subjects (20 of each sex), with a mean age of 13.02 years. Groups 1 and 2 and males and females within each group were compared with t tests. RESULTS: Afro-Caucasian subjects presented greater maxillary protrusion, smaller upper anterior face height and lower posterior face height, larger upper posterior face height, greater maxillary and mandibular dentoalveolar protrusion as well as soft tissue protrusion than Caucasian subjects. The Afro-Caucasian female subjects had less mandibular protrusion and smaller total posterior facial height and upper posterior facial height than males. CONCLUSIONS: Brazilian Afro-Caucasian subjects have greater dentoalveolar and soft tissue protrusion than Brazilian Caucasian subjects, with slight sexual dimorphism in some variables.

Comparison of mesiodistal tooth widths in Caucasian, African and Japanese individuals with Brazilian ancestry and normal occlusion

Fernandes,Thais Maria Freire; Sathler,Renata; Natalício,Gabriela Letícia; Henriques,José Fernando Castanha; Pinzan,Arnaldo
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2013 EN
Relevância na Pesquisa
56.09%
OBJECTIVE: To observe the presence of sexual dimorphism and compare the mesiodistal width of the teeth in Caucasian, African and Japanese individuals with Brazilian ancestry not orthodontically treated and with normal occlusion. METHODS: One hundred pairs of dental casts were used. It was measured, from first molar to first molar in both arches, the teeth's mesiodistal widths, using a digital caliper. For the statistical analysis of results Kolmogorov-Smirnov, t test, ANOVA and Tukey's test (p < 0.05) were used. RESULTS: Sexual dimorphism occurred on the three evaluated groups, and the highest mesiodistal widths were found in males. There was statistically significant difference between racial groups in all evaluated teeth in males. However, in females, this same difference was found only on upper lateral incisor and first molar; and lower lateral incisor, canine, first premolar and first molar. CONCLUSION: Most of mesiodistal measures present particular characteristics in relation to gender, with higher values for males, and to race, with a tendency for African to present greater mesiodistal distance of the teeth, followed by Japanese and Caucasians, respectively, important for the correct diagnosis and orthodontic planning.

Assessment of the nasolabial angle in young Brazilian black subjects with normal occlusion

Magnani,Maria Beatriz Borges de Araújo; Nouer,Darcy Flávio; Nouer,Paulo Roberto Aranha; Pereira Neto,João Sarmento; Garbui,Ivana Uglik; Böeck,Eloísa Marcantonio
Fonte: Sociedade Brasileira de Pesquisa Odontológica - SBPqO Publicador: Sociedade Brasileira de Pesquisa Odontológica - SBPqO
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2004 EN
Relevância na Pesquisa
56.19%
Black individuals present craniofacial characteristics which differ from those of other races, especially the white race, whose cephalometric analyses are usually considered as the standard in routine orthodontic diagnosis and treatment planning. Further studies are therefore needed to enable more accurate and specific diagnoses for this ethnic group. The present study was conducted in order to assess average values for the nasolabial angle in young Brazilian black individuals with normal occlusion, and to assess the occurence of sexual dimorphism. Thirty-six lateral skull, extraoral radiographs from Brazilian black individuals were selected from the archives of the Scientific Recordings Department, Orthodontics Graduate Program, School of Dentistry of Piracicaba, State University of Campinas (UNICAMP). The patients' ages varied from 10 to 14 years, they presented normal occlusion upon clinical examination, and had not been submitted to orthodontic treatment. The cephalometric landmarks from which the nasolabial angle was obtained and measured were traced by a single researcher. Statistical analysis and evaluation of the results led to the conclusion that the nasolabial angle of young Brazilian black individuals is sharper, i.e., the soft tissue profile is more protruded. The average value for the whole sample was 88.14º ± 12.52º. The nasolabial angle was statistically smaller among females (p < 0.05)...

Relationship between dental size and normal occlusion in Brazilian patients

Freire,Sheila Medina; Nishio,Clarice; Mendes,Alvaro de Moraes; Quintão,Cátia Cardoso Abdo; Almeida,Marco Antonio
Fonte: Fundação Odontológica de Ribeirão Preto Publicador: Fundação Odontológica de Ribeirão Preto
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2007 EN
Relevância na Pesquisa
66.28%
The present study was performed on dental casts and lateral cephalometric films of 30 Caucasian Brazilian individuals (15 males and 15 females) aged 18 to 27 years and 4 months, all presenting normal occlusion and satisfactory facial profile. The aims were to investigate the existence of dental discrepancies according to Bolton's criteria, to obtain mean values for overbite, overjet, curve of Spee and interincisal angle, and to demonstrate any correlation among these parameters. A single calibrated operator measured each variable characteristics and the process was recorded twice with an accurate modified digital caliper. It was observed that the sample of normal occlusion did not present any dental discrepancy among the 12 teeth of opposite arches. The overall ratio (91.46) and anterior ratio (77.83) were in accordance with those proposed by Bolton. The mean values for normal occlusion in this Brazilian sample were defined as: 2.45 mm for overbite; 1.92 mm for overjet; 1.01 mm for curve of Spee and 129.57° for interincisal angle. A statistically significant correlation was found between overjet and overbite.

Assessment of soft profile characteristics in Amazonian youngsters with normal occlusion

Oliveira Junior,Wilson Maia de
Fonte: Dental Press International Publicador: Dental Press International
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2012 EN
Relevância na Pesquisa
66.17%
OBJECTIVE: The present study aimed to determine from a sample of Amazonian youngsters, with normal occlusion, the mean values for soft profile characteristics using cephalometric radiographs obtained in lateral norm. METHODS: The cephalometric radiographs of the 30 youngsters, being 15 males and 15 females, with mean age of 21.6 years old, were assessed. For statistical analysis, central tendencies and dispersion measurements (mean and standard deviation) were used and, for both the comparison of the mean values of males and females and the correlations between the measurements of the soft profile and bony profile, the unpaired Student's t-test was applied. RESULTS AND CONCLUSION: After obtaining statistical data, parameters were set based on the cephalometric norms regarding the specialized literature, revealing that all variables presented a normal distribution pattern. There was sexual dimorphism for the following measurements: ANB, NAP, ANS-Me, N-ANS, Sn'-Me', and N'-SN'. Norms were determined for all the assessed measurements. Statistical differences were observed between the norm found in the present study and those found in the specialized literature.

Craniofacial characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion

Janson, Guilherme; Quaglio, Camila Leite; Pinzan, Arnaldo; Franco, Eduardo Jacomino; Freitas, Marcos Roberto de
Fonte: Universidade de São Paulo. Faculdade de Odontologia de Bauru Publicador: Universidade de São Paulo. Faculdade de Odontologia de Bauru
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/04/2011 ENG
Relevância na Pesquisa
56.17%
OBJECTIVE: The objective of this study was to compare the skeletal, dental and soft tissue characteristics of Caucasian and Afro-Caucasian Brazilian subjects with normal occlusion and to evaluate sexual dimorphism within the groups. MATERIAL AND METHODS: The sample comprised lateral cephalograms of untreated normal occlusion subjects, divided into 2 groups. Group 1 included 40 Caucasian subjects (20 of each sex), with a mean age of 13.02 years; group 2 included 40 Afro-Caucasian subjects (20 of each sex), with a mean age of 13.02 years. Groups 1 and 2 and males and females within each group were compared with t tests. RESULTS: Afro-Caucasian subjects presented greater maxillary protrusion, smaller upper anterior face height and lower posterior face height, larger upper posterior face height, greater maxillary and mandibular dentoalveolar protrusion as well as soft tissue protrusion than Caucasian subjects. The Afro-Caucasian female subjects had less mandibular protrusion and smaller total posterior facial height and upper posterior facial height than males. CONCLUSIONS: Brazilian Afro-Caucasian subjects have greater dentoalveolar and soft tissue protrusion than Brazilian Caucasian subjects, with slight sexual dimorphism in some variables.

Mesiodistal root angulation of permanent teeth in children with mixed dentition and normal occlusion

Jesuino, Flávia A. S.; Costa, Luciane R.; Valladares-Neto, José
Fonte: Universidade de São Paulo. Faculdade de Odontologia de Bauru Publicador: Universidade de São Paulo. Faculdade de Odontologia de Bauru
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/12/2010 ENG
Relevância na Pesquisa
56.09%
OBJECTIVE: There is little information regarding the mesiodistal angulation of permanent teeth in mixed dentition. The aim of this study was to evaluate mesiodistal root angulation of permanent incisors, canines and first molars of 100 Brazilian children, using a new horizontal reference plane based on the midpoint of the intercuspation of primary canines and permanent first molars in panoramic radiographs during the mixed-dentition phase. MATERIAL AND METHODS: Children were equally divided between the genders with a mean age of 8.9 years (SD=0.76), normal occlusion and no eruptive disturbances. RESULTS: The angulation of the permanent maxillary first molars was close to the vertical, whereas the mandibular molars presented approximately 25 degrees of distal root angulation. The maxillary canines were the most distally angulated teeth, whereas the permanent mandibular canines were vertically positioned. The evaluation of the anterior maxillary area showed vertical position of permanent lateral, and central incisors with a slight distal angulation, whereas the permanent mandibular incisors tended to a mesial radicular convergence. CONCLUSIONS: The proposed reference line could be useful in mixed dentition root angulation evaluation; there was a slight asymmetry in the mesiodistal angulation among homologous teeth...

; Dental arch morphology in normal occlusions

Paranhos, Luiz Renato; Andrews, Will A.; Jóias, Renata Pilli; Bérzin, Fausto; Daruge Júnior, Eduardo; Triviño, Tarcila
Fonte: UNICAMP/FOP Publicador: UNICAMP/FOP
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; Formato: application/pdf
Publicado em 12/11/2015 ENG
Relevância na Pesquisa
56.24%
; Aim: The aim of this study was to identify the prevalence of 3 different mandibular dental arch morphologies in individuals with natural normal occlusion. Methods: Fifty-one mandibular dental casts of Caucasian individuals with natural normal occlusion were digitized. Each was without a history of orthodontic treatment and presenting at least four of the six keys to normal occlusion described by Andrews. Twelve orthodontists evaluated the prevalence of the square, oval and tapered arch shapes by analyzing the mandibular digital images. Results: The most prevalent dental arch shape was oval (41%), followed by square (39%), and tapered (20%) shapes. Conclusions: During leveling and alignment phases, when elastic-alloy-wires are greatly used, the orthodontist could use any of the studied arch shapes (oval, square, tapered), once the prevalence of all of them was similar.

; Analysis of tweed’s facial Triangle in black brazilian youngsters with normal occlusion

Kuramae, Mayury; Magnani, Maria Beatriz Borges de Araújo; Nouer, Darcy Flávio; Ambrosano, Gláucia Maria Bovi; Inoue, Roger Cristiano
Fonte: UNICAMP/FOP Publicador: UNICAMP/FOP
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ;
Publicado em 13/11/2015 ENG
Relevância na Pesquisa
66.14%
; A cephalometric study was carried on a sample of 37 Black youngsters of both genders (16 males, 21 females), descending from Black Brazilian parents or grandparents, age varying from 10 to 14 years, from the city of Piracicaba, Brazil, and all of them with normal occlusion. None of them has ever undergone orthodontic treatment. This study aimed to ascertain the mean values for the cephalometric measures which take part on the Tweed’s Facial Triangle: FMA, FMIA and IMPA, and we also tried to verify the occurrence of sexual dimorphism in this ethnic group. Statistical analysis (Student’s test, 5%) of the results show that this ethnic group presented lower incisors with greater inclination and a more convex facial profile, but no sexual dimorphism.

; Factors related to Bolton’s anterior ratio in Brazilians with natural normal occlusion

Jóias, Renata Pilli; Scanavini, Marco Antonio
Fonte: UNICAMP/FOP Publicador: UNICAMP/FOP
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ;
Publicado em 12/11/2015 EN
Relevância na Pesquisa
56.09%
; Aim: To verify whether some factors could be related to Bolton’s anterior ratio: buccolingual thickness of upper incisors, mesiodistal tipping of upper incisors, overjet and overbite, and if there is gender dimorphism. Methods: Thirty-five pairs of dental casts with natural normal occlusion were evaluated, proceeding from 27 females and 8 male Caucasian individuals, aged between 13 years old and 17 years and 4 months (mean age: 15y8m). A digital caliper and a ruler were used to make the measurements. Results: The anterior ratio was 77.48% ± 2.22, being statistically similar to Bolton’s, 77.20% ± 1.65. Based on Pearson’s correlation test, only the overbite presented relation to the anterior ratio. It was not found gender dimorphism. Conclusions: Overbite was inversely proportional to Bolton’s anterior ratio, hence, when the anterior ratio is increased, the overbite could be decreased and vice-versa.