骨性安氏Ⅲ类错下颌单颌手术后软硬组织的变化  

Soft and hard tissue changes after orthodontic and orthognathic treatment in patients with skeletal Class Ⅲ malformation

作　　者：刘奕[1] 毕玮玮[1] 陈燕[1] 

机构地区：[1]中国医科大学口腔医学院正畸科,辽宁省口腔医学研究所,辽宁沈阳110002

出　　处：《上海口腔医学》2012年第2期166-169,共4页Shanghai Journal of Stomatology

基　　金：辽宁省教育厅科研项目计划(L2010670);辽宁省科学技术计划项目(2009225010-27)~~

摘　　要：目的:探讨正畸-正颌联合治疗成人骨性安氏Ⅲ类错,上、下颌软、硬组织的变化及其变化的相关性。方法:选取骨性安氏Ⅲ类错患者20例,手术前、后拍摄X线头颅侧位片,手术方式为双侧下颌骨矢状劈开截骨术(BSSRO)。采用SPSS13.0软件包对数据进行配对t检验。结果:治疗后SNB、B点和Pog点到Y轴的距离变小,ANB变大;软组织颏唇角、TLL点、SB点和TC点到Y轴的距离均变小,且均有显著差异(P<0.01)。SB点到Y轴的距离与B点到Y轴的距离存在线性关系,比值为1∶1,决定系数R2=0.96;TC点到Y轴的距离与Pog点到Y轴的距离比为0.84,决定系数R2=0.97。结论:单纯下颌前突患者经正畸和BSSRO治疗后,上颌软组织无明显变化,上、下唇长度不受影响。颏前点软组织与骨组织变化比值为0.84,颏唇沟点为1:1,相关强度均在0.9以上。PURPOSE：To investigate soft-and hard-tissue changes and the association of these changes after orthodontic and orthognathic treatment in patients with skeletal Class III malocclusion.METHODS：The sample consisted of 20 patients with skeletal class III malocclusion treated with bilateral sagittal split ramus osteotomy（BSSRO）.Lateral cephalograms taken before and after treatment were analyzed.All data were analyzed with SPSS13.0 software package for paired t test.RESULTS：The distances of SNB,B and Pog to Y axis was smaller and ANB was larger after treatment.The labiomental angle,the distances of TLL,SB and TC to Y axis were smaller（P〈0.01）.The two pairs of SB-B and TC-Pog had linear correlation.The ratio was 1：1 and 0.84,respectively.The coefficient of determination R2 value of SB-B was 0.96 and the other was 0.97.CONCLUSIONS： The patients with Class III malocclusion treated with orthodontic treatment and BSSRO can achieve satisfactory outcome.The single mandibular surgery did not affect the maxillary soft tissues.The changes of upper lip and lower lip length were not affected.The ratio of SB-B and TC-Pog corresponding soft-and hard-tissue ratio was 1∶1 and 0.84,respectively.The coefficient of determination R2 values was all over 0.9.

关 键 词：BSSRO 正畸-正颌联合治疗 骨性安氏Ⅲ类错 X线头影测量 

分 类 号：R783.5[医药卫生—口腔医学]