MỘT SỐ ĐẶC ĐIỂM CẤU TRÚC SỌ MẶT Ở NGƯỜI KINH TRƯỞNG THÀNH 18-25 TUỔI HẠNG III XƯƠNG HÀM TRÊN KÉM PHÁT TRIỂN

Abstract

Purpose:A cross-sectional was conducted to determine some craniofacial indexes of Kinh ethnic adults from 18 to 25 years old with skeletal III class and underdeveloped maxilla. Materials and methods:A cross-sectional of 58 subjects (28 males and 30 females) ethnic alduts aged 18-25 years on lateral cephalometric film. Results: SNA angle in male was 77,52±1,60^o, in female was 77,74±1,58^o; SNB angle in male was 81,18±2,34^o, in female was 80,94±2,30^o; ANB angle in male was -3,67±1,82^o, in female was -3,20±1,70^o;SN/FH angle in male was 10,29±2,67^o, in female was 10,18±2,77^o; S-Gn/FH angle in male was 57,89±3,81^o, in female was 57,37±2,58^o;U1/FH anlge in male was -118,44±11,59^o, in female was 118,00±6,78^o; U1/PP angle in male was 117,96±7,85^o, in female was 118,81±7,61^o; U1/OP anlge in male was 135,17±13,22^o, in female was 133,89±11,09^o. Conclusions: The results showed that SNA angle <80^o (underdeveloped maxilla), was not different between male and female in angles SNA, SNB, ANB, SN/FH, S-Gn/FH, U1/FH, U1/PP and U1/OP. SN/FH and S-Gn/FH angles in Kinh ethnic people of Vietnam were larger than Nepalese but lower than Caucasian, Noth America.