微型种植体支抗治疗安氏Ⅱ类1分类错牙合畸形的临床应用  

Micro implant treatment of class Ⅱ 1 malocclusion clinical application of malocclusion deformity

作　　者：张萍[1] 余波[1] 杨甜甜[1] 张瑞智[1] 华一峰[1] 程凡[1] 

机构地区：[1]安康市中心医院口腔科,陕西安康725000

出　　处：《中国美容医学》2014年第1期56-59,共4页Chinese Journal of Aesthetic Medicine

摘　　要：目的:探讨微钛钉种植体支抗在安氏Ⅱ类1分类错牙合畸形矫治中的临床应用及其与传统支抗的区别。方法:选择30例安氏Ⅱ类1分类拔牙矫治的上颌前突患者,拔牙模式均为拔除上颌2个第一前磨牙,随机分成试验组和对照组,各15例。实验组于上颌双侧第一磨牙和第二前磨牙牙根之间植入自攻微型种植体作为支抗,对照组常规制作上颌横腭杆加Nance弓和口外弓。分析2组治疗前后x线头影测量指标变化。结果:所有病例矫治后,上前牙突度及轴倾度得到改善。实验组SNA、ANB、U1-SN、UI-L1、U1-NA、U1-PP、U6-PP的变化较对照组明显,2组间差异有统计学意义。结论:微种植体能提供稳定的支抗,最大限度避免支抗的丧失,能更有效地改善安氏Ⅱ类1分类错牙合畸形患者的面形和牙弓凸度。Objective To investigate the clinical application of titanium miniscrew implant in adjusting Angle class Ⅱ division 1 malocclusion and the difference with conventional orthodontic anchorage. Methods Thirty maxillary prognathism patients with Angle class II division 1 malocclusion who received extraction therapy were selected and included in this study. The extraction was performed at the 2 first premolars for all patients.Patients were randomized to the experiment arm and control arm, with 15 patients in each arm. Those in the experiment arm received self-drilling miniscrew implant at the maxillary teeth roots between the first molar and the second premolar as the orthodontic anchorage, and those in the control arm received conventional transpalatal arch with Nance anchorage and headgear anchorage.The changes in X-ray cephalometry indices were compared between pre-and post-therapy. Results After therapy,the projection and inclination of the maxillary anterior teeth was improved.The changes in cephalometry indices, including SNA,ANB,U1- SNP, UI-L1,U1-NA,U1-PP,and U6-PP,in the experiment arm were different as compared to those in the control arm, which were statistically significant. Conclusion Miniscrew implement provides stable orthodontic anchorage,avoids the failure of anchorage at the maximum extent, and effectively improve patients＂ facial morphology and arch projection in patients with Angle class Ⅱ division 1 malocclusion.

关 键 词：微钛钉种植体 正畸支抗 错牙合畸形 

分 类 号：R783.5[医药卫生—口腔医学]