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

Thais Maria Freire FERNANDES, Renata SATHLER, Gabriela Letícia NATALÍCIO, José Fernando Castanha HENRIQUES, Arnaldo PINZAN

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 it was used KolmogorovSmirnov, t test, ANOVA and Tukey’s test (p < 0.05). Results: Sexual dimorphism occurred on the three evaluated groups, and the highest mesiodistal widths were found in males. There was statistically signiicant diference between racial groups in all evaluated teeth in males. However, in females, this same diference 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.

Keywords: Orthodontics. Balanced dental occlusion. Tooth.

How to cite: Fernandes TMF, Sathler R, Natalício GL, Henriques JFC, Pinzan A. Comparison of mesiodistal tooth widths in Caucasian, Black and Japanese Brazilian with normal occlusion. Dental Press J Orthod. 2013 May-June;18(3):130-5.

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