NGHIÊN CỨU LÀM PHỤC HÌNH THÁO LẮP TOÀN BỘ CÓ SỬ DỤNG KỸ THUẬT GHI TƯƠNG QUAN TRUNG TÂM BẰNG CUNG GOTHIC TRÊN BỆNH NHÂN MẤT RĂNG HAI HÀM TẠI BỆNH VIỆN TRƯỜNG ĐẠI HỌC Y DƯỢC CẦN THƠ NĂM 2021-2022

Abstract

Background: There are many techniques for guiding the patient’s mandible into centric relation, we used Gothic arch tracing to establish centric relation during the construction of complete dentures. Objective: To examine clinical characteristics and to evaluate the treatment results of Gothic arch tracing centric relation recording technique in the construction of conventional complete dentures. Materials and method: Descriptive cross-sectional study was performed on 30 edentulous patients. Results: The study included 18 males and 27 females with an average age of 62.57±7.2. According to the Sangiuolo classification, most of the upper jaws had a class I residual bridge resorption level (53.3%), and more than half of the lower jaws had a class II resorption level in the upper jaw (64.4%). The mean time recording centric relation was 9.6±3.2 minutes. The mean time is taken for technique according to the level of bone resorption of the upper and lower jaw: grade I 9.25±3.44 minutes and 9.11±3.26 minutes, grade II 11.11±3.38 minutes and 9.97±3.67 minutes, grade III 16±1.41 minutes and 13.43±2.51 minutes. Follow-up after 3 months of treatment, the dentures are stable in chewing activities: upper jaws 100%, lower jaws 93.3%. Conclusion: The Gothic arch tracing centric relation technique provides accurate centric relation recording, enhancing the stability of conventional complete dentures.