不同切牙定位方式对骨性Ⅱ类患者审美评价的影响  

Influence of Different Incisor Positions on Evaluating Facial Profile Esthetic in Skeletal Class II Patients

作　　者：何昌平[1] 邓锋[1] 王华桥[1] 黄倩倩[1] 张林[1] 张翼[1] 

机构地区：[1]重庆医科大学口腔医学院正畸科.口腔疾病与生物医学重庆市重点实验室,重庆401147

出　　处：《口腔医学研究》2016年第5期497-501,共5页Journal of Oral Science Research

基　　金：重庆卫生计生委重点项目(编号:20141012);重庆市卫生局项目(编号:2013-2-069)

摘　　要：目的：评价正畸治疗中不同切牙定位方式对骨性Ⅱ患者的侧貌审美认知的影响。方法：选取1例上颌前突下颌后缩骨性Ⅱ正畸术后病例作为研究对象,拍摄头颅侧位片和侧貌照片,分别以Tweed、Andrews理论为指导对切牙位置进行不同方式定位,通过Photoshop软件体现到唇部变化,得到12张不同的侧貌图。选取择专业和非专业人员对其评分。结果：下切牙直立（90°）、轻度唇倾代偿的（92.5°）、上切牙FA点落于GALL线后方-2mm和-1mm对应侧貌较美观。结论：成人上颌前突下颌后缩的骨性II患者软组织侧貌美学设计中,上切牙内收舌倾代偿,下切牙唇倾代偿,且下切牙唇倾处于于90°~95°之间较为美观;下切牙的过度唇倾代偿有损侧貌的美观。Objective：To study the influence of incisor position on facial profile esthetic inskeletal class II adult femaleduring camouflage treatment.Methods：A Chinese young female with skeletal class II hard and soft tissue was chosen as research object,lateral cephalogram and lateral profile photograph of post-orthodontic treatment were taken in natural head position.Photoshop software was chosen to change the position of incisors,then those changes were reflected to lip based on accepted ratios of soft tissue to hard tissue changes.Finally,12 different profile pictures were achieved.37 professional orthodontists and 40non-professionals were chosen to score for these pictures.Results：The preferable profiles were those with lower incisor inclination of 90 or 92.5degrees,and those with FA Points of maxillary incisors 1or 2mm behind the goal anterior limit line（GALL line）.Conclusion：In skeletal class II adult orthodontic treatment,attractive soft tissue profiles were achieved when the lower incisor and upper incisor were kept in a labial and lingual tipping position respectively,and the ideal lower incisors labial inclination was kept between 90°and 95°.Excessive labial inclination of lower incisors easilyruin a pleasing smiling appearance.

关 键 词：骨性Ⅱ类 代偿性治疗 切牙定位 软组织侧貌 审美评价 

分 类 号：R783.5[医药卫生—口腔医学]