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目的应用Mc Namara分析法对PASS直丝弓矫治器矫治AngleⅡ类1分类错畸形矫治前后的X线头影测量片进行测量分析,评价其治疗效果。方法选择AngleⅡ类1分类错畸形患者20例,且均拔除4个第一双尖牙,应用PASS直丝弓矫治器进行矫治。对矫治前后的X线头颅侧位片进行Mc Namara分析,得到7项相关指标。应用SPSS17.0进行统计学分析。结果上切牙突距,下切牙突距,下前面高,鼻唇角,上唇倾角均发生明显改变,并且有统计学意义。结论应用PASS直丝弓矫治器对AngleⅡ类1分类错矫治能得到很好的矫治效果。
Objective To measure and analyze the X-cephalen measurement before and after treatment of Angle Class 1 malocclusion by using the Mc Namara method to evaluate the curative effect. Methods Twenty patients with Angle Ⅱ Class 1 malocclusion were selected and all the four first premolar teeth were extracted. The patients were treated with PASS straight wire appliance. Before and after treatment of X-ray cephalograms McNamara analysis, get 7 related indicators. Application SPSS17.0 for statistical analysis. Results The incisor distance, inferior incisor distance, lower anterior height, nasolabial angle, upper lip angle were significantly changed, and have statistical significance. Conclusions The application of PASS straight wire appliance to Class Ⅱ division 1 malocclusion can achieve a good correction effect.