KẾT QUẢ PHẪU THUẬT CHỈNH HÌNH XƯƠNG HÀM Ở NGƯỜI BỆNH SAI LỆCH LOẠI III XƯƠNG TẠI BỆNH VIỆN HỮU NGHỊ VIỆT NAM - CUBA, HÀ NỘI GIAI ĐOẠN 2019-2024

Abstract

Objectives: To describe the preoperative clinical and radiographic features and the surgical outcomes of orthognathic surgery in patients with skeletal Class III malocclusion at Vietnam - Cuba Friendship Hospital, Hanoi.

Subjects and methods: A cross-sectional, retrospective longitudinal study of 40 patients who underwent orthognathic surgery between 2019 and 2024, assessed preoperatively and at 7 days, 3 months and 6 months postoperatively.

Results: Preoperatively, 92.5% presented with a concave profile and a mean ANB angle of -3.0±2.1°; intraoperative complications occurred in 7.5%, with no lasting sequelae. Postoperatively, skeletal correction reached a Class I relationship (ANB 0.2±2.2°) and remained stable through 6 months (p>0.05), with only 0.8±0.9mm of relapse at point B; the lower lip continued to adapt through 6 months (p=0.005). At 6 months, 100% achieved a straight profile, 100% had good/fair occlusion, and temporomandibular disorder prevalence fell from 10.0% to 0%.

Conclusions: Orthognathic surgery produced marked and stable improvement in facial esthetics, occlusion and function, with a low complication rate and a high margin of safety.