KÍCH THƯỚC THEO CHIỀU NGANG XƯƠNG HÀM TRÊN CỦA BỆNH NHÂN CÓ SAI KHỚP CẮN LOẠI III XƯƠNG TRÊN PHIM CHỤP CBCT

Abstract

Objectives: To study the transverse widths of maxilla in Skeletal Class III malocclusion patients using cone-beam computed tomography (CBCT). Reasearch methodology: Cross – sectional describle study on 37 CTCB films of  Skeletal Class III malocclusion patients (23 males, 14 females) at the School of Dentisty – Hanoi Medical University. Inter-buccal and inter-lingual bone widths were measured at the levels of  hard palate, alveolar crest and the furcation level of the  maxillary first molar. Results: the transverse widths of maxila: Inter- buccal: at the levels of hard palate by  66,3 ± 4,9mm for male, 62,0 ± 3,1mm for female, 64,7 ± 4,7mm for average; at the levels of first molar alveolar crest by 58,3 ± 3,3mm for male, 55,0 ± 2,6mm for female, 57,1± 3,4mm for average; furcation level of the maxilla first molar by 48,0 ± 2,7mm for male, 43,9 ± 1,9mm for female, 46,5 ± 3,1mm for average. Conclusions: (1) Males’ maxillary inter-buccal bone and inter-lingal bone widths on the first molar are wider than the corresponding females’ widths. (2) At the furcation level of the first molar. On average, the maxilla bone widths was 46,5 ±  3,1mm.