传动直丝弓技术矫治安氏Ⅱ类错(牙合)的临床初步应用

摘要

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 (P＞0.05),the anterior teeth had significant horizital movement (P＜0.01) 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.%目的:通过观察传动直丝弓技术矫治的俺氏Ⅱ类错(牙合)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(牙合)双颌或上颌前突患者,平均年龄1 3.2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(牙合)双颌或上颌前突患者.