Đánh giá kết quả điều trị chỉnh hình răng ở vị trí góc số 1 bằng thiết bị cố định và đánh giá các chỉ số hiệu quả (par)

Objective: Using PAR index to evaluate severe malocclusion, pre- and post- treatment. Subject and method: A retrospective, prospective, cross-sectional descriptive study in 62 patients (with study models of pre- and post- treatment) from 2010 to 2013 at Department of Odontology, No.108 Military Central Hospital. Result: Good results (91.9 percent) with 57 patients, improved results (8.1 percent) with 5 patients and there were no patients had bad results. The mean of PAR index pre- and post-treatment was 5.2. Conclusion: The PAR index to evaluate the outcome of orthodontic treatment have high reliability; result was determined by natural numeral and it was one of compelled standards to evaluate the success of occlusion.