Fernandes Thais Maria Freire, Sathler Renata, Natalício Gabriela Letícia, Henriques José Fernando Castanha, Pinzan Arnaldo
Dental Press J Orthod. 2013 May-Jun;18(3):130-5. doi: 10.1590/s2176-94512013000300021.
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.
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.
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.
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.
观察高加索人、非洲人、有巴西血统且未经正畸治疗、咬合正常的日本人的牙齿近远中宽度的性别差异并进行比较。
使用100副牙模。用数字卡尺测量双侧牙弓中从第一磨牙到第一磨牙的牙齿近远中宽度。结果采用Kolmogorov-Smirnov检验、t检验、方差分析和Tukey检验（p<0.05）进行统计分析。
在所有三个评估组中均存在性别差异，男性的近远中宽度最大。男性所有评估牙齿的种族间差异具有统计学意义。然而，女性仅在上颌侧切牙和第一磨牙以及下颌侧切牙、尖牙、第一前磨牙和第一磨牙存在同样的差异。
大多数近远中测量值在性别方面具有特定特征，男性的值更高；在种族方面也有特定特征，非洲人牙齿的近远中距离往往更大，其次分别是日本人及高加索人，这对正确诊断和正畸治疗计划很重要。
