上颌前牵引联合快速扩弓矫治儿童骨性Ⅲ类错前后软硬组织变化  

The orthopedic treatment of skeletal class Ⅲ malocclusion with maxillary protraction combined with rapid maxillary expansion

作　　者：毛新霞 邹敏[2] 刘小兰[2] 

机构地区：[1]市人民医院口腔科,甘肃张掖730004 [2]西安交通大学口腔医院正畸科,陕西西安710004

出　　处：《牙体牙髓牙周病学杂志》2012年第9期521-524,共4页Chinese Journal of Conservative Dentistry

摘　　要：目的:探讨上颌前牵引联合快速扩弓对儿童骨性Ⅲ类错的矫治效果。方法:对28例儿童骨性Ⅲ类错病人(7～10岁)进行上颌前牵引治疗,在前牵引前快速扩弓1周。分别在治疗开始(T0)和结束(T1)时拍摄头颅定位侧位片,进行定点测量分析。结果:①硬组织变化:ANB角增加5.37°(P<0.05),Wit’s值增加5.74 mm(P<0.05),Ptm-A增加2.49 mm(P<0.05),Yaxis增加1.82°(P<0.05);SNB角减小0.75°(P>0.05),Go-Me、Co-Gn分别增加0.64 mm、2.21 mm,但P>0.05,SN-PP减小0.61°(P>0.05),PP-MP增加5.54°(P<0.05),下面高、下面高/全面高分别增加3.98(P<0.05)、1.61(P>0.05);U1-NA角增加3.10°(P<0.05),L1-NB角减小1.23°(P<0.05),Ms6-PP距增加1.13 mm(P<0.05);②软组织测量项目变化:面型角增大5.98°,颏唇角减小2.45°、H角增大5.2°,上唇-E线距增大1.42 mm,下唇-E线距减小1.18 mm(P<0.05)。结论:前牵引联合快速扩弓矫治儿童骨性Ⅲ类错,可产生显著治疗效果,能促进上颌骨的生长,使面型改善,但下颌出现顺时针旋转,高角病人慎用。AIM：To examing the skeletal and soft tissue changes in the correction of skeletal class III malocclusion by maxillary protraction combined with rapid maxillary expansion（RME）.METHODS：28 children of 7-10 years old with skeletal class III malocclusion were treated with maxillary protraction combined with RME in this study.Before and after treatment,cephalometric radiographs were taken and analyzed.RESULTS：After maxillary protraction,the anterior crossbite were corrected and obvious profile changes were observed.The maxilla moved foreward,the length increased but followed with PP-SN plane rotated anticlockwise.The mandible moved backward and downward,the N-Me,ANS-Me/N-Me increased.The upper incisors inclined labially and the lower incisors inclined lingually with the jaw.Profile changes was achieved with FCA,H angle increased.Upper lip moved forward and protrusion increased.Correspondingly lower lip moved backward.CONCLUSION：Maxillary protraction combined with RME is effective in the treatment of Class III malocclusion with maxillary deficiency.

关 键 词：上颌前牵引 快速扩弓 安氏Ⅲ类错[牙合] 

分 类 号：R783.5[医药卫生—口腔医学]