NHẬN XÉT HIỆU QUẢ ĐIỀU TRỊ BẰNG KHAY CHỈNH RĂNG TRONG SUỐT Ở NHÓM NGƯỜI BỆNH NẮN CHỈNH RĂNG KHÔNG NHỔ RĂNG

Abstract

Objective: This study is aimed at assessing the treatment effectiveness of clear aligner therapy in Vietnamese non- extraction cases. Subject and method:  In noncontrolled clinical trial, 31 patients (23 females, 8 males) with an age range 15 -49 years, were evaluated in Clincheck software, digital models and cephalometrics. Descriptive statistics were used to analyze the data. Results: The average treatment time was 14,58 months. The upper and lower intercanine width significantly increased 1,26±2,38 and 0,71±1,9 mm, the upper and lower intermolar width increased 2,46±1,56 và 2,83±2,07mm, respectively. In group of 14 skeletal class II patients, SNA angle index, Witts index decreased significantly in comparison between pre and post treatment. Conclusion: the effectiveness of clear aligner in mild and moderate malocclusion cases shows at abilities of arch expansion and reduction of protrusion and deepbite.