肌激动器式保持器在下颌后缩患者固定矫治后的保持效果研究  

Study of retention effect of activators in patients with mandibular retrusion after fixed orthodontic treatment

作　　者：陈丽丹 陈文静[2,3] 彭辉[2,3] 

机构地区：[1]浙江省诸暨市中医院口腔科,诸暨311800 [2]南京医科大学大学口腔医学研究所 [3]南京医科大学附属口腔医院正畸科,南京210029

出　　处：《口腔医学》2013年第11期779-781,共3页Stomatology

基　　金：江苏高校优势学科建设工程资助项目(2011-137)

摘　　要：目的比较肌激动器式保持器与传统哈雷氏保持器在下颌后缩患者畸形矫治完成后的保持效果。方法 40例固定正畸结束后的青少年下颌后缩错牙合患者随机分为2组,分别佩戴肌激动器式保持器和哈雷氏保持器,佩戴时和戴用1年后对比头影测量主要指标和模型覆牙合覆盖的差异。结果哈雷保持器组患者的下颌后缩趋势显著高于肌激动器组患者。结论下颌后缩患者使用肌激动器式保持器有较好的防止下颌后缩复发的作用。Objective To compare the retention effect of activators and Hawley retainers in retention period of the mandibular retru-sion patients after fixed orthodontic treatment. Methods 40 adolescent patients who had finished their fixed orthodontic treatments were randomly divided into two groups, respectively wearing activators or Hawley retainers. Cephalometric analysis and difference in model overjet,overbite proceeded forthwith and one year later. All data were subjected to paired t-test and Wilcoxon rank sum test. Re-suits Patients wearing Hawley retainers indicated more retrusion tendency compared with the activator group. Conclusions Activators serves as a better choice for patients with mandibular retrusion in retention period which can better prevent recurrence of mandibular re-trnsion.

关 键 词：正畸 哈雷氏保持器 肌激动器 下颌后缩 

分 类 号：R783.5[医药卫生—口腔医学]