中国实用口腔科杂志

中国实用口腔科杂志 ›› 2012, Vol. 5 ›› Issue (08): 479-481.

• 论著 • 上一篇    下一篇

前方牵引联合唇挡矫治替牙期骨性Ⅲ类错牙合临床疗效研究

  

  1. 大庆油田总医院集团五官医院口腔正畸科，黑龙江  大庆  163416
  • 收稿日期:2012-04-11 修回日期:2012-06-28 出版日期:2012-08-15 发布日期:2012-09-14

  • Received:2012-04-11 Revised:2012-06-28 Online:2012-08-15 Published:2012-09-14

摘要： 目的    研究前方牵引联合唇挡矫治替牙期骨性Ⅲ类错牙合的临床疗效。方法    选择2010—2011年大庆油田总医院集团五官医院口腔正畸科门诊就诊的替牙期上颌发育不足的骨性Ⅲ类错牙合患者30例。随机分为试验组和对照组，各15例。试验组使用前方牵引联合唇挡进行矫治；对照组则仅使用前方牵引矫治。在治疗前后对所有患者进行X线头影测量分析并比较组间差异。结果    试验组治疗前后变化差值与对照组比较，X线头影测量分析结果显示，SNA、ANB、U1-SN、U1-NA角、U1-NA距、Ptm-U6差异均有统计学意义（P < 0.01）；模型测量结果显示，TAL、AD、拥挤度差异亦均有统计学意义（P < 0.01）。结论    采用前方牵引和唇挡联合矫治替牙期骨性Ⅲ类错牙合，可有效消除单一采用前方牵引矫治带来的负面影响，是一种切实可行的办法。

关键词: 骨性Ⅲ类错牙合, 前方牵引, 唇挡, 替牙期, 轻中度拥挤

Abstract: Objective    To study the clinical effect of maxillary protraction combined with lip bumper in the treatment of skeletal Class Ⅲ malocclusion in mixed dentition period. Methods    Thirty patients with skeletal Class Ⅲ malocclusion due to maxillary deficiency were treated with maxillary protraction and crossbite occlusion was removed with   distal relationship. Thirty patients with crowding upper teeth after maxillary protraction treatment were equally divided into two groups at random： the lip bumper group and the contrast group. 15 patients in the lip bumper group were further treated with lip bumpers to adjust the occlusion relation. Results    Point A was obviously moved forward，Ptm-U6 distance and the total length of arc tooth bow as well as the arch depth became larger，and the degree of crowding was relaxed. Conclusion    Combined application of maxillary protraction with lip bumper on skeletal Class Ⅲ malocclusion treatment during the mixed dentition period can effectively avoid the negative effects. This is a practical and feasible method for treating skeletal crossbite occlusion without tooth extraction in the permanent dentition period.

Key words: skeletal Class Ⅲ malocclusion, maxillary protraction, lip bumper, mixed dentition period, mild-moderate crowding