成人轻度骨性Ⅲ类错不同拔牙模式矫治的侧貌分析  

Facial profile changes after orthodontic treatment with two extraction models in mild skeletal Class Ⅲ adult patients

作　　者：刘艾芃 沈慧娟[1] 彭娟敏 康娜[1] 

机构地区：[1]广西医科大学口腔医学院正畸科,广西南宁530021

出　　处：《临床口腔医学杂志》2016年第3期153-157,共5页Journal of Clinical Stomatology

基　　金：广西壮族自治区教育厅科研项目(200601MS113)

摘　　要：目的:比较不同拔牙模式矫治的轻度骨性Ⅲ类错牙合成人患者的侧貌变化。方法:选择40例诊断为设计拔除4个前磨牙或第三磨牙矫治的轻度骨性Ⅲ类错牙合的成人病例,分为两组,每组各20例。用头影测量分析法比较矫治前后的变化以及软硬组织的相关性。结果:拔除前磨牙组变化主要在于内收上下前牙。拔除第三磨牙组在于唇倾上前牙,软组织改变分别是内收下唇和唇倾上唇代偿(P<0.05)。软硬组织的变化具有一定相关性(P<0.05)。结论:不同拔牙模式对轻度骨性Ⅲ类错牙合患者矫治后侧貌的改变是有差别的,但在一定程度上都能改善凹面型和颏部形态。Objective：To compare the profile changes after orthodontic treatment with two extraction models in mild skeletal Class III adult patients. Method：40 cases who could choose premolar or third-molar extraction models were equally divided into 2 groups based on the practical extraction position. Cephalograms were taken at initial visit and finish time for all patients and analyzed by 10 skeletal and 11 soft-tissue measurements. Result：The premolar-extraction group showed significant decreases in ∠U1-NA,∠L1-NB angles and retrusion of the lower lip（P〈0.05）. On the contrary,the third-molar-extraction group showed significant increase in ∠U1-NA angle and protrusion of the upper lip（P〈0.05）. The profile changes in nasolabial angle,thickness of the upper lip,Z angle,retrusion of the lower lip and depth of the labiomental fold were correlated with the movements of incisors（P〈0.05）. Conclusion：Though different changes were found in two extraction models,the facial concavity and the shape of chin could be corrected in some degree.

关 键 词：骨性Ⅲ类错[牙合] 软组织侧貌 拔牙模式 

分 类 号：R783.5[医药卫生—口腔医学]