传动直丝弓技术矫治安氏II类错牙合临床初步应用.docVIP

传动直丝弓技术矫治安氏II类错牙合临床初步应用[摘要]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类错牙合双颌或上颌前突患者。 [关键词]正畸矫治器；安氏II类错牙合；传动直丝弓矫治技术 [中图分类号]R783.5 [文献标识码]A [文章编号]1008-6455（2011）02-0303-03 Clinical application of self-tapping micro-implants in Angle classⅡ malocclusion CHENG Xue-hui,CHEN Lan,ZENG Qian （Department of Orthodontics,Hubei Xiaogan Oral Hospital,Xiaogan 432000,Hubei,China） Abstract:ObjectiveTo 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.Methods13 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 horizitalmovement (P＜0.01) And the patients’ lateral profile obviously improved.ConclusionThe 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. Key words:self-drilling;micro-implants;orthodontic anchorage 20世纪70年代，Andrews推出了直丝弓矫治器，其最大的优点在于，临床应用及操作便捷，矫正结果空前准确，达到数字化程度，深受广大正畸医师欢迎。但是，在临床实践过程中，人们很快发现，与传统非直丝弓技术相比，其移动牙齿更不容易。为此，学者们又进行了不断的改进，推出了一些新的直丝弓技术，例如，自锁托槽、Tip-Edge(plus)托槽、MBT技术等。但是，上述改进分别是局部的或单一的，甚至有的为促使牙移动而修改了重要的槽沟数据，偏离了直丝弓观念的精髓之一