上颌反复快速扩缩前方牵引效果的锥形束CT观察  

A cone-beam computed tomography evaluation of maxillary protraction with repetitive rapid palatal expansions and constrictions

作　　者：刘伟涛[1] 宋扬[1] 王雪东[1] 何丹青[1] 周彦恒[1] 

机构地区：[1]北京大学口腔医学院口腔医院正畸科,100081

出　　处：《中华口腔医学杂志》2015年第2期78-83,共6页Chinese Journal of Stomatology

摘　　要：目的 使用锥形束CT比较上颌单次快速扩弓前方牵引和上颌反复快速扩缩前方牵引的矫治效果,以期为临床提供参考.方法 选择24例上颌后缩患者,使用随机化区组设计的方法分为对照组和反复扩缩组,每组12例.对照组上颌单次快速扩弓后行面罩前方牵引;反复扩缩组上颌反复快速扩缩后行面罩前方牵引.对每组治疗前后的锥形束CT影像进行三维重建、定点、重叠和测量分析.结果 反复扩缩组1例患者在治疗中失访.治疗后反复扩缩组上颌骨前移量[（2.5±1.0）mm]显著大于对照组[（1.6±0.8）mm]（P＜0.05）;反复扩缩组颅底点至上齿槽座点（Ba-A）的距离增加了（3.1±1.0） mm,显著大于对照组[（2.2±0.9）mm]（P＜0.05）;反复扩缩组上颌双侧第一磨牙前移量显著大于对照组（P＜0.05）.结论 与上颌单次快速扩弓相比,上颌反复快速扩缩前方牵引早期治疗上颌后缩患者可能对上颌骨前移略有利.Objective To investigate the effects of maxillary protraction combined with repetitive rapid palatal expansions and constrictions（RPE/C） vs.rapid palatal expansion（RPE） alone using cone-beam computed tomography（CBCT）.Methods Twenty four subjects with maxillary retrusion were recruited and block randomized into either the control group（n=12） or the RPE/C（n=12） group.Control group：facemask protraction after RPE.RPE/C group：facemask protraction after RPE/C.3D reconstruction,landmarks identifying,superimposition and cephalometric analysis were performed to compare the pre-treatment and post-treatment CBCT images.Results One subject in the RPE/C group was lost to follow up during the treatment.Maxilla moved forward[（2.5 ± 1.0） mm] after maxillary protraction with RPE/C,which was significantly greater than that in the control group[（1.6±0.8） mm]（P〈0.05）.The distance of basion to subspinale （Ba-A） increased[（3.1 ± 1.0） mm] in the RPE/C group,which was significantly greater than that in the control group[（2.2 ± 0.9） mm] （P〈0.05）.The amount of forward movement of upper first molars was significantly greater in the RPE/C group（P〈0.05）.Conclusions Maxillary protraction with RPE/C might positively affect the forward movement of maxilla compared with the RPE alone protocol with the early treatment of maxillary retrusion patients.

关 键 词：腭扩张术 口外牵引器 锥束计算机体层摄影术 

分 类 号：R783.5[医药卫生—口腔医学]