2017 年 26 巻 4 号 p. 361-368
Research related to tooth size, tooth size discrepancy and relationship with BMI in transgender population is yet to be explored in dentistry. The purpose of this study is to establish normative data on mesiodistal width dimensions associated with BMI and tooth size discrepancy in transgender population. The data were derived from dental casts of 151 transgender individuals (75 transgender male, 76 transgender female; age group 18-30). Data were analysed using independent t-test and ANOVA. The mean and standard deviation were calculated for individual tooth size, Bolton’s overall and anterior ratios, and BMI separately for transgender males and females. The mesiodistal widths of the maxillary teeth showed higher variability than the mandibular teeth and the mean value was higher in transgender females than in males and revealed statistically significant differences. Bolton’s anterior ratios were found to be 78.05 (±3.67) for male and 78.90 (±4.12) for female. The mean of Bolton’s overall tooth ratio for male 91.03(±3.66) and for women was 91.46(±3.91) with no significant differences (p >0.05). No significant differences between BMI and mesiodistal tooth dimensions except for the left first molar tooth in mandible and left lateral incisor tooth in maxilla between overweight and underweight groups (p<0.05). These findings indicate that population-specific standards are necessary for clinical assessments and for several dental treatment purposes. Moreover, it is appropriate to use transgender norms in a regular dental practice for transgender individuals.
