Objective: To determine the normality mean values in the soft tissue cephalometric measurements of young Japanese-Brazilian, with normal occlusion and compare the results of the variables with compatible samples of young Caucasians and Mongoloids. Methods: Forty radiographs of young Caucasians, 32 of Japanese-Brazilians and 33 of Mongoloids were used. The three samples presented individuals with normal occlusion and well-balanced face. The samples were divided by gender due to the soft tissue characteristics and to facilitate comparison. The following statistical tests were performed: Analysis of variance (ANOVA) and analysis of covariance (ANCOVA) with p < 0.05.
Results:The Japanese-Brazilian sample of females showed thinner soft tissues in the nasion region and smaller nose when compared to the Caucasians. The Mongoloid sample showed thinner tissues in the supramentonian and pogonion regions. In males, the Japanese-Brazilians had thinner tissues in the nasion region; thicker lower lip and supramentonian region in comparison to the Caucasian sample. For the Mongoloid, soft tissue was thicker in the glabella and ANS-Sn regions. Conclusion: It is necessary to use specific soft tissue standards for this mixed race.
Keywords: Ethnic groups. Reference values. Orthodontics.Objetivo: determinar os valores médios de normalidade das grandezas cefalométricas tegumentares de jovens mestiços nipo-brasileiros com oclusão normal, e compará-los com amostras compatíveis de jovens brasileiros leucodermas e xantodermas. Métodos: foram utilizadas 40 telerradiografias de jovens leucodermas, 32 de nipo-brasileiros e 33 de xantodermas. As três amostras apresentavam indivíduos com oclusão normal e face bem balanceada. As amostras foram divididas por sexo devido às características do tecido mole e para facilitar a comparação. Foram realizados os testes estatísticos análise de variância a um critério (ANOVA) e a análise de covariância (ANCOVA) com p < 0,05. Resultados: a amostra nipo-brasileira para o sexo feminino apresentou menor espessura na região do násio e menor nariz em relação aos leucodermas. Em relação à amostra xantoderma, menor espessura na região supramentoniana e pogônio. No sexo masculino, os nipo-brasileiros apresentaram menor espessura na região do násio, maior espessura do lábio inferior e da região supramentoniana em relação à amostra leucoderma. Em relação aos xantodermas, maior espessura na região da glabela e da ENA-Sn. Conclusão: verificou-se a necessidade de se utilizar normas de tecido mole específicas para essa raça miscigenada.Palavras-chave: Grupos étnicos. Valores de referência. Ortodontia.
OBJECTIVE: The aim of this study was to determine the standards of facial height in 30 young
(14-year-old) Japanese-Brazilian descendants with normal occlusion, and assess
whether sexual dimorphism is evident. METHODS: The cephalometric measurements used followed the analyses by Wylie-Johnson,
Siriwat-Jarabak, Gebeck, Merrifield and Horn. RESULTS: Results showed dimorphism for total anterior facial height (TAFH), lower anterior
facial height (LAFH), anterior facial height (AFH), total posterior facial height
(TPFH) and upper posterior facial height (UPFH) measurements. CONCLUSIONS: The standards of facial heights in young Japanese-Brazilian descendants with
normal occlusion were observed. Sexual dimorphism was identified in five out of
thirteen evaluated variables at this age range.
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