无托槽隐形矫治器非减数矫治安氏Ⅱ类1分类的临床疗效分析

Clinical Effectiveness of Non-extraction Clear Aligner Therapy in Patients with Class Ⅱ Division 1 Malocclusion

目的:探讨无托槽隐形矫治技术非减数矫治安氏Ⅱ类1分类患者的临床疗效。方法:在2016年1月~2021年1月就诊于郑州大学第一附属医院口腔正畸科采用无托槽隐形矫治器(Clear Aligners)完成非减数矫治的安氏Ⅱ类1分类患者中选取符合排纳标准的患者共34例,年龄(20.1±7.2)岁。使用美国正畸学会客观评分系统(ABO-OGS)评价矫治效果,并通过分析矫治前后X线头影测量项目的变化,评价无托槽隐形矫治器的垂直向及支抗控制能力。结果:根据ABO-OGS临床评测标准进行评价,34例使用无托槽隐形矫治器完成非减数矫治的安氏Ⅱ类1分类病例通过率为55.88%,可能通过率为97.06%。与矫治前相比,U6-PP距、U1-PP角减小,差异具有统计学意义(P<0.05)。SN-MP角、SN-OP角、SN-PP角、S-Go/N-Me矫治前后无统计学差异(P>0.05)。结论:采用无托槽隐形矫治器非减数矫治均角安氏Ⅱ类1分类患者临床疗效良好,垂直向及支抗控制能力佳。

Objective:To evaluate the clinical effectiveness of non-extraction Clear Aligner therapy in patients with ClassⅡdivision 1 malocclusion.Methods:From January 2016 to January 2021,34 patients who received non-extraction Clear Aligner therapy and with ClassⅡdivision 1 malocclusion in the First Affiliated Hospital of Zhengzhou University were selected.Based on American Board of Orthodontics Objective Grading System,the orthodontic outcomes were evaluated.The lateral cephalograms were measured and analyzed.Results:Based on American Board of Orthodontics Objective Grading System,the passing rate was 55.88%and the possible passing rate was 97.06%.There were statistically significant decreases in U6-PP(mm)and U1-PP(°)after the treatment(P<0.05).There was no statistical difference in measurements of SN-MP,SN-OP,S-Go/N-Me,and SN-PP(P>0.05).Conclusion:Non-extraction Clear Aligner therapy in patients with average-angle ClassⅡdivision 1 malocclusion could receive satisfactory results.