Headgear—activator治疗安氏Ⅱ^1类错（牙合）对鼻唇颏协调性影响的研究  

Study on influence of Headgear-activator appliance treating Class Ⅱ division 1 malocclusion on coordination between nose,lip and chin

作　　者：李立国[1] 张翠娟[2] 袁东辉[1] 

机构地区：[1]白求恩国际和平医院口腔科,石家庄050082 [2]河北医科大学西山校区口腔教研室,石家庄050228

出　　处：《口腔医学》2013年第11期733-735,共3页Stomatology

基　　金：河北省卫生厅医学科学研究重点课题计划(20110658)

摘　　要：目的研究Headgear-activator矫治器治疗安氏Ⅱ1类患者对鼻唇颏协调性的影响。方法选择自然生长和使用Headgear-activator矫治的38例骨性Ⅱ1类错牙合患者为研究对象,将其分为对照组和Headgear-activator组,每组均为19例患者。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SPSS 11.0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。结果上唇审美平面距、下唇审美平面距、上切牙露齿度、上唇突角、上下唇突角、上唇颏突角减小;上唇长、下唇长、上唇倾角、下唇倾角、下唇突角、鼻唇角、颏唇沟角、软组织面角、Z角、面突角增大,与对照组比较有统计学意义(P<0.05)。结论 Headgear-activator矫治器可显著减小安氏Ⅱ1类错牙合患者上下唇突度,改善开唇露齿,在一定程度上恢复了鼻、唇、颏之间的协调性,使侧貌轮廓变得自然舒缓,软组织侧貌趋于直面型。Objective To investigate the effect of Headgear-activator appliance treating Class Ⅱ division 1 malocclusion on the co-ordination between nose,lip and the chin. Methods 38 patients with skeletal Angle Class Ⅱ malocclusion were divided into two groups （ Headgear-activator group and control group）, 19 patients in each group. The X-ray lateral cephalograms of two groups of patients were photographed before and after treatment and the angle and line spacing was measured. SPSS 11.0 software package was used to calculate the mean and the standard deviation. The paired t-test was performed to compare the changes of the measurements. Results Ls-E,Li-E, U1 -Stm and the angle of NsLs-FH, LsNsLi, LsNsPg＇ decreased, Sn-Stms, Stmi-Me＇ and the angle of NsPg＇-FH, A＇Ls-FH, B＇Li-FH, CmSnLs, LiB＇Pg＇, NsPg＇-FH, Z, GSnPg＇ increased, and there was statistically significant difference（ P 〈 0.05 ）. Conclusions Head- gear-activator can reduce upper and lower lip protrusion, improve incompetent lips, recover the coordination between nose, lips and chin to a certain extend. Soft tissue profile tends to be nature and straight-styled.

关 键 词：Headgear—activator 鼻唇颏协调性 软组织侧貌 下颌后缩 

分 类 号：R783.5[医药卫生—口腔医学]