种植体与横腭杆支抗对减数正畸患者临床疗效影响的比较  

An efficacy comparison between mini-screw implant and transpalatal arch on dentofacial morphology in extraction cases

作　　者：刘月华[1] 刘晶[1] 李强[1] 丁王辉[1] 

机构地区：[1]同济大学口腔医学院正畸科,200072

出　　处：《中华口腔医学杂志》2009年第8期454-459,共6页Chinese Journal of Stomatology

基　　金：上海市卫生局科研项目（054088）

摘　　要：目的比较种植体与横腭杆支抗配合滑动直丝弓技术矫治减数正畸患者的临床疗效，以期为临床拔牙病例的支抗选择提供参考。方法将42例需拔除4颗第一前磨牙的患者分成两组，种植体支抗组19例，横腭杆支抗组23例，分别采用微螺钉种植体与横腭杆支抗配合直丝弓矫治技术关闭拔牙间隙。对矫治前后的头颅侧位X线片进行测量，并通过成组设计的t检验分析两组牙颌面形态变化的差异。结果矫治后种植体支抗组上切牙腭向移动（7．05±1．89）mm，压低（1．71±2．33）mm，上颌第一磨牙远中移动（0．45±3．32）mm，压低（1．74±2．66）mm，上唇突点后移（4．61±2．00）mm；矫治后横腭杆支抗组上切牙腭向移动（4．59±1．78）mm，伸长（0．93±1．77）mm，上颌第一磨牙近中移动（1．65±1．87）mm，伸长（0．52±1．59）mm，上唇突点后移（3．07±2．02）mm；两组差异均有统计学意义（P〈0．05）。结论种植体支抗的作用明显强于横腭杆支抗，种植体不仅能大幅度内收前牙，改善侧貌，有效压低上切牙以利于矫正深覆殆、露龈笑，还可压低上颌磨牙。Objective To compare the effects between mini-screw implant and transpalatal arch （TPA） on dentofacial morphology in extraction cases. Methods Forty-two cases were divided into two groups. One group（ n = 19） had been treated with mini-screw implants and the other group（ n = 23 ） treated with TPA as anchorage control. Sliding technique was used to close extraction space in the two groups. Cephalometric analysis was performed before and after the treatment. The data were analyzed by using independent-samples t test. Results In the mini-screw implant group, the maxillary incisors were retracted （7. 05 ± 1.89） mm and intruded （ 1.71 ±2. 33）mm, The maxillary first molars were distalized （0. 45 ±3.32） mm and intruded （ 1.74 ± 2. 66 ） mm. While in the TPA group, the upper incisors were retracted （4. 59 ± 1.78 ）mm and extruded （ 0. 93± 1.77 ） mm. The maxillary first molars were moved （ 1.65 ±1.87 ） mm mesially and extruded （0. 52 ± 1.59） mm. All the relevant results between the two groups were significantly different （ P 〈 0. 05 ） . Conclusions As orthodontic anchorage, mini-screw implants were different from TPA. Mini-screw implant could not only retract the upper incisors but also slightly intrude upper incisors and upper molars.

关 键 词：正畸支抗 横腭杆 微螺钉种植体 

分 类 号：R686[医药卫生—骨科学]