前方牵引与前方牵引联合III类颌间牵引治疗早期骨性错牙合的比较研究(1)
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[摘要]目的:对比单纯前方牵引与前方牵引联合III类颌间牵引治疗早期骨性III类错牙合的临床效果。方法:选择替牙早期骨性III类错牙合患者26例,分别应用单纯前方牵引(13例)和前方牵引联合III类颌间牵引(13例)矫治,对两组病例矫治前后头影测量结果的差值进行统计学分析。结果:单纯组疗程平均8.2个月,联合组疗程平均6.3个月(P<0.05)。 所有病例均获得满意的矫治效果。所有病例矫治后上颌基骨前移,下颌基骨后退,上颌前牙发生了唇倾和前移,上唇前移,下唇后退,两组相比无统计学差异(P>0.5)。联合组较单纯组下切牙发生了明显的舌倾和后移,覆盖明显增加,两组相比具有统计学差异(P<0.05)。结论:单纯前方牵引与前方牵引联合III类颌间牵引都可以有效治疗早期骨性III类错牙合,前方牵引联合III类颌间牵引可以缩短疗程,疗效更好。
[关键词]单纯前方牵引;前方牵引联合III类颌间牵引;早期骨性III类错牙合
[中图分类号]R783.5 [文献标识码]A [文章编号]1008-6455(2010)10-1537-03
Comparative study of simple protraction and protraction combined with Class III intermaxillary traction treatment of early skeletal Class III malocclusion
CHEN You-xin,LEI Lei,WANG Qiang-pin,JU Zhen
(Affiliated Taixing Peopie's Hospital,Medical College,Yangzhou University Taixing 225400,Jiangsu,China)
Abstract:ObjectiveTo observe the clinical effect of simple protraction compared with protraction combined with Class III intermaxillary traction treatment of early skeletal Class III malocclusion.Methods We Selected 26 patients with early skeletal Class III malocclusion.13 patients wre treated with Simple protraction and the others were treated with protraction combined with Class III intermaxillary traction . The therapeutic changes by cephalometric analysis of 2 groups before and after treatment were compared.Statistical analysis was done.ResultsThe therapeutic period of the Simple protraction was 8.2 months, the combined group was 6.3 months,and the difference was significant (P<0.05).All patients were satisfied with the treatment effect.After treatment,all patients maxillary base bone was antelocation, mandibular base bone was retreated.Maxillary anterior teeth were proclination and forward,upper lip was forward,lower lip was backward,the two groups had no significant difference(P>0.5).Compared with the simple protraction group, lower incisors of the combined group wre lingual inclination and backward significantly,overjet increased significantly,and the difference was significant (P<0.05).Conclusion The two methods both can treat early skeletal Class III malocclusion effectively,but the combind methed can shorten the course,and effect was better ......
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