NGHIÊN CỨU KÍCH THƯỚC ĐỘ RỘNG CỦA RĂNG VÀ SỰ SAI BIỆT KÍCH THƯỚC RĂNG HAI HÀM THEO PHÂN TÍCH BOLTON TRÊN SINH VIÊN RĂNG HÀM MẶT TRƯỜNG ĐẠI HỌC Y DƯỢC CẦN THƠ

Abstract

Objectives: To determine the means of mesiodistal crown diameters and to evaluate the interarch tooth-size discrepancies according to Bolton’s analysis among dental students of Can Tho University of Medicine and Pharmacy. Subjects and methods: A cross-sectional study on 110 dental students of Can Tho University of Medcine and Pharmacy, including 57 males and 53 females aged from 18 to 25 years old. Study casts of these all students were taken for a measurement to determine the mesiodistal crown diameters and to calculate Bolton’s ratios. Results: The means of mesiodistal crown diameters and the Bolton’s ratios were determined. In males, the anterior ratio was 78,53 ± 2,8%, the anterior ratio was 91,72 ± 2,58%. In females, the ratios were 77,87 ± 2,57% and 91,14 ± 2,22% in turn. In the entire sample, the ratios were 78,21 ± 2,73% and 91,44 ± 2,42% in turn. Conclusions: All the teeth of males had larger means of mesiodistal crown diameters in comparison with those of females. There was no significant differences of the ratios between males and females; the proportions of clinically significant discrepancies were 23,7% in anterior ratio and 14,6% in overall ratio.