Headgear-activator矫治器治疗安氏Ⅱ~1类错的软组织改变  

Soft tissue changes following the treatment of Class Ⅱ division 1 malocclusion using Headgear-activator appliance

作　　者：李立国[1] 左艳萍[2] 袁东辉[1] 

机构地区：[1]白求恩国际和平医院口腔科,河北石家庄050082 [2]河北医科大学第一医院口腔正畸科,河北石家庄050031

出　　处：《上海口腔医学》2010年第6期582-585,共4页Shanghai Journal of Stomatology

摘　　要：目的:研究Headgear-activator矫治器治疗安氏Ⅱ1类下颌后缩患者软组织侧貌的改变。方法:选择生长发育高峰期的50例安氏Ⅱ1类错患者,分为Headgear-activator矫治器治疗组与对照组,对2组患者治疗前、后拍摄X线头颅定位侧位片,测量所得角度和线距,采用SPSS11.0软件包分别计算均值和标准差,利用配对t检验比较测量指标的变化。结果:鼻唇角、颏唇沟角、Z角增大,H角、上唇和下唇突角、上唇颏突角减小,与对照组比较,差异均有统计学意义(P<0.05)。结论:Headgear-activator矫治器治疗可使软组织颏部前移,上、下唇凸度明显减小,从而改善下颌后缩患者的软组织侧貌。PURPOSE：To investigate the soft tissue changes following the treatment of Class Ⅱdivision 1 malocclusion using Headgear-activator appliance.METHODS：Fifty Class II division 1 malocclusion subjects who were at peak high velocity on the growth curve were divided into two groups.Standardized lateral cephalogram was taken for each patient in the two groups before and after treatment.SPSS11.0 software package was used to calculate the mean and standard deviation,matched t-test was used to evaluate the changes of the soft tissues.RESULTS：The angle of CmSnLs,LiB＇Pg＇ and Z increased,the angle of H,LsNsLi and LsNsPg＇ decreased,there was statistically significant difference between the two groups.CONCLUSIONS：Using Headgear-activator appliances,soft tissue profile is effectively improved.Soft tissue chin is moved forward obviously.Lip protrusion is decreased.

关 键 词：Headgear-activator矫治器 安氏Ⅱ1类错 软组织侧貌 下颌后缩 

分 类 号：R783.5[医药卫生—口腔医学]