20~30岁凸面型青年人笑容暴露量及其相关因素分析  

Analysis of smile exposure and related factors in young people aged 20 to 30 with convex facial profiles

作　　者：祝丽青 陈贞瑀 黄云 高姗姗[1] ZHU Liqing;CHEN Zhenyu;HUANG Yun;GAO Shanshan(State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases&Department of Prosthetics,West China Hospital of Stomatology,Sichuan University,Chengdu 610041,China)

机构地区：[1]口腔疾病研究国家重点实验室、国家口腔疾病临床医学研究中心、四川大学华西口腔医院修复科,四川成都610041

出　　处：《口腔疾病防治》2023年第11期786-793,共8页Journal of Prevention and Treatment for Stomatological Diseases

基　　金：四川省自然科学基金项目(2022NSFSC0365);四川省卫生健康委员会医学科技项目(21PJ060)。

摘　　要：目的探讨20~30岁凸面型青年人的笑容暴露量并分析其与面部美学指标、笑容满意程度之间的联系。方法本研究获得医院伦理审批,受试者知情同意及肖像授权。招募80名20~30岁的凸面型青年受试者,录制姿势位微笑和自发性大笑时的全过程并导入PhotoshopCC软件,选取关键帧,测量笑容暴露量。通过三维面扫获取受试者静息状态下的面部三维信息,测量面下1/3相关美学指标,评估受试者对自身笑容的满意程度,并对不同性别笑容暴露量与面下1/3相关美学指标、心理评分进行相关性分析。结果20~30岁不同性别间的笑容暴露量、笑容模式、面下1/3相关美学指标数据和主观心理测评评分均有统计学差异(P<0.05)。大笑时男、女间的开口度差距大,男性的平均开口度为女性的5倍,而男性的平均上颌中切牙牙龈暴露高度约为女性的1/2。男性的平均鼻唇角(99.80°±7.96°)大于女性(96.26°±7.31°)(P<0.05),而男性的平均上唇长度占面下1/3长度比例(33.73%±2.35%)小于女性(38.57%±2.76%)(P<0.05)。男性的平均心理评分(57.75±13.46)高于女性(53.69±17.95)(P<0.05)。微笑及大笑时的上颌软硬组织暴露量占口裂面积比例与鼻唇角呈正相关,大笑时口裂宽度与心理评分呈负相关。结论20~30岁凸面型男、女性的笑容暴露量和笑容模式不同,男性笑容开口度大,牙龈暴露量少,女性笑容开口度小,牙龈暴露量多。笑容暴露量与鼻唇角呈正相关,与笑容满意程度呈负相关。Objective To study smile exposure in 20-to 30-year-olds with convex facial profiles and to explore the correlation between smile exposure and other aesthetic indicators,as well as psychological factors.Methods This study obtained ethical approval from the hospital.After they gave informed consent and portrait authorization,80 young subjects aged 20-30 with convex facial profiles had their dynamic postural smile and spontaneous laughter recorded.The videos were imported into Photoshop CC software,key frames were selected,and the smile exposure was measured.The three-di-mensional information of the subject's face in a resting state was obtained,the relevant aesthetic indicators were mea-sured,and the satisfaction degree of their smile and laughter were evaluated.Correlation analysis was conducted for smile exposure and the relevant aesthetic indicators and subjective psychological evaluation.Results There were statistically significant differences in smile exposure,smile patterns,relevant aesthetic indicators and subjective psychological evalua-tion between males and females aged 20 to 30(P<0.05).There was a large gap between males and females in the average opening degree when laughing,males having 5 times that of females,while the average gingival exposure height of the maxillary central incisor in males was approximately 1/2 of that in females.The average nasolabial angle of males(99.80°±7.96°)was larger than that of females(96.26°±7.31°)(P<0.05),while the average ratio of upper lip length to the length of the lower 1/3 of the face of males(33.73%±2.35%)was less than that of females(38.57%±2.76%)(P<0.05).The average psychological score of males(57.75±13.46)was higher than that of females(53.69±17.95)(P<0.05).The ra-tios of maxillary teeth and gingival exposure to oral fissure in the postural smile were positively correlated with the nasola-bial angle.The oral fissure width in spontaneous laughter was negatively correlated with psychological score.Conclu-sion Convex-faced males and females aged 20 to 30

关 键 词：青年人 微笑 大笑 暴露量 三维图像 鼻唇角 心理测评 美学指标 牙龈暴露高度 口腔美学修复 

分 类 号：R78[医药卫生—口腔医学]