传动直丝弓技术矫治安氏Ⅱ类错的临床初步应用

Clinical application of self-tapping micro-implants in Angle classⅡ malocclusion

目的:通过观察传动直丝弓技术矫治的俺氏Ⅱ类错患者软组织侧貌、牙的特征性改变,探讨该技术的矫治要点。方法:应用传动直丝弓技术矫治13例(女8例,男5例)安氏Ⅱ类错双颌或上颌前突患者,平均年龄13.2岁。所有患者均拔除4颗第一前磨牙,按照传动直丝弓技术矫治程序进行矫治。结果:与矫治前相比,矫治后上、下切牙显著内收,软组织侧貌改善明显。结论:传动直丝弓矫治器利用口内支抗、细丝轻力,快速倾斜移动牙齿,准确转矩并正轴的方法,可有效矫治安氏Ⅱ类错双颌或上颌前突患者。

Objective To investigate the clinical course and the control effect of molar of the self-drilling micro-implants as anchorage in orthodontic treatment.And evaluat the curative effect of self-drilling micro-implants.Methods 13 patients with Class Ⅱ division 1 malocclusion aged from 13 to 25 years old,were extract of bilateral maxillary first premolars and implant self-drilling micro-implants before bonding brackets,and use the micro-plantsbefore to backward the anterior teeth.Take the cephalomatric films before and after the treatment and mesure the variation of the teeth.Results 13 patients with self-drilling micro-implants finished orthodontic treatment and the overbite and overjet were normal.After the treatment,there was no serious horizital and vertical movement（P0.05）,the anterior teeth had significant horizital movement（P0.01） And the patients＇ lateral profile obviously improved.Conclusion The self-drilling micro-implants was a kind of solid comfortable anchorage system,can solve the crowding and protruded malocclusion with molars＇ stablitiy.So this method could be widely used in orthodontic treatment.