Abstract
To determine the normality mean values in the soft tissue cephalometric measurements of young Japanese-Brazilian, with normal occlusion and to compare the results of the variables with compatible samples of young Caucasians and Mongoloids. 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. 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. It is necessary to use specific soft tissue standards for this mixed race.
Highlights
Many studies are found in the scientific literature about the soft tissue profile, there is no research on this subject comparing young Japanese-Brazilians with other races
This study aimed to determine the normality of mean values in the soft tissue profile of young JapaneseBrazilians, with normal occlusion, as well as Brazilians and Japanese descendants comparing these results with samples of young Caucasian Brazilians and young Mongoloid Brazilians
Cephalometric radiographs were taken from all sample individuals in maximum intercuspation (MHI), as it is known that the differences between this mandibular position and centric relation (CR) are minimal at this age, and they minimally interfere in the cephalometric results, especially in cases of normal occlusion.[30]
Summary
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. These studies were initially conducted in Caucasians, but it has been shown that different races have different[12] cephalometric standards, making it necessary to establish normative values for the different racial and ethnical groups In multicultural societies such as Brazil, the racial differences have assumed great importance.[12] The Brazilian population is presented today with a lot of intermingled people, making it necessary to recognize that the best esthetic and functional results cannot be found when using as a guide another race or ethnicity.[22] many studies are found in the scientific literature about the soft tissue profile, there is no research on this subject comparing young Japanese-Brazilians with other races. This study aimed to determine the normality of mean values in the soft tissue profile of young JapaneseBrazilians, with normal occlusion, as well as Brazilians and Japanese descendants comparing these results with samples of young Caucasian Brazilians and young Mongoloid Brazilians
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