前方牵引联合上腭快速扩弓矫治骨性Ⅲ类错30例面部软组织侧貌改变分析  

Maxillary protraction on the development of the facial soft tissues in patients with skeletal Class Ⅲ malocclusion

作　　者：李霞[1] 时函[2] 

机构地区：[1]大连医科大学附属第一医院口腔正畸科,辽宁大连116021 [2]同济大学附属口腔医院正畸科,上海200072

出　　处：《中国实用口腔科杂志》2011年第6期348-350,共3页Chinese Journal of Practical Stomatology

基　　金：国家自然科学基金(30901697/H1402)

摘　　要：目的评价上颌前方牵引联合上腭快速扩弓矫治上颌发育不足所致的骨性Ⅲ类错患者面部软组织侧貌的变化。方法选择2007年6月至2009年5月大连医科大学附属第一医院口腔正畸科门诊收治的上颌发育不足所致的骨性Ⅲ类错患者30例(均处于生长发育高峰期或高峰前期),均给予快速扩弓联合前方牵引矫治,测量并比较矫治前后面部软组织侧貌变化。结果前方牵引后,鼻顶点至Y轴距离(Y-Prn)、上唇基角(S-Ns-Sn)、上唇凸距(UL-E)、上唇凸厚(UL-U1)、上唇凹点至Y轴的距离(Y-As)、上唇突点至Y轴的距离(Y-UL)、颏唇角(LL-Bs-Pos)、颏厚度(Pos-Po)、软组织下面高(Sn-Mes)、H角均增大(P<0.01);软组织面角(FH-NsPos)、下唇基角(S-Ns-Bs)、软组织颏前点至Y轴距离(Y-Pos)均减小(P<0.01),鼻唇角(Cm-Sn-UL)亦减小(P<0.05)。结论前方牵引后,上唇显著前移,颏部后下移位,颏唇关系改善,侧貌突度显著增加。Objective To study facial soft tissue changes after the treatment with rapid maxillary expansion （RME） and maxillary protraction appliance in 30 subjects with skeletal Class Ⅲ malocclusion with a retruded maxilla. Methods Thirty subjects with skeletal Class Ⅲ malocclusions with maxillary retrognathism,admitted to Department of Orthodontics,First Affiliated Hospital of Dalian Medical University from June 2007 to May 2009,were selected and treated by RME and facial mask. Cephalometric measurements about soft tissue changes were analyzed. Results After face mask therapy,Y-Prn,S-Ns-Sn, UL-E,UL-U1,Y-As （As-point to Y-axis）,Y-UL（UL-point to Y-axis）, LL-Bs-Pos,Pos-Po,Sn-Mes and H angle increased（P 0.01）; FH-NsPos,S-Ns-Bs and Y-Pos（Pos-point to Y-axis）decreased（P 0.01）,and Cm-Sn-UL also decreased（P 0.05）. Conclusion After protraction,upper lip area becomes more marked,and chin area moves backward and downward. Class Ⅲ concave profile becomes more balanced and convex.

关 键 词：上颌前方牵引 骨性Ⅲ类错 面部软组织 上腭快速扩弓 

分 类 号：R78[医药卫生—口腔医学]