中国汉族成年人的上前牙临床牙冠长度及宽长比分析  

Length and Width-to-length Ratio of Clinical Crown of Chinese Han Adults in Wuhan

作　　者：余挺[1,2] 杨希 赵莉 李成章[2] 尚姝环 YU Ting;YANG Xi;ZHAO Li;LI Cheng-zhang;SHANG Shu-huan(Department of Periodontology,Key Laboratory of Oral Medicine,Guangzhou Institute of Oral Disease,Stomatology Hospital of Guangzhou Medical University,Guangzhou 510140,China;Department of Periodontology,School&Hospital of Stomatology,Wuhan University,Wuhan 430079,China;Department of Prosthodontics,Guanghua School of Stomatology,Sun Yat-sen University and Guangdong Provincial Key Laboratory of Stomatology,Guangzhou 510055,China)

机构地区：[1]广州医科大学附属口腔医院牙周科·广州口腔疾病研究所·口腔医学重点实验室,广东广州510140 [2]武汉大学口腔医院牙周科,湖北武汉430079 [3]中山大学光华口腔医学院·附属口腔医院口腔修复科,广东省口腔医学重点实验室,广东广州510055

出　　处：《口腔医学研究》2018年第9期1003-1006,共4页Journal of Oral Science Research

基　　金：国家自然科学基金(编号:81700985、81101162、81670995);广州市卫生和计划生育科技项目(编号:20181A011102)

摘　　要：目的:测量汉族成年人的上前牙临床牙冠长度(Clinical crown length,CCL)及宽度-长度比(Clinical crown width∶length ratio,CCW∶CCL)。方法:2011~2012年于武汉大学招募20~30岁汉族大学生91名(32男、59女),取石膏模型测量双侧上中切牙(U1)、侧切牙(U2)、尖牙(U3)的CCW、CCL并计算CCW/CCL。结果:U1、U2、U3的CCL在男性依次为10.27、8.87、10.19mm,女性为9.72、8.36、9.46mm;CCW/CCL在男性依次为0.82、0.79、0.80,女性为0.86、0.83、0.84。CCL的左右侧差异显著,左>右0.08~0.14 mm(P<0.05);性别差异亦显著,男>女(P<0.01)。CCW∶CCL的牙位排序存在性别差异,男为U1=U3>U2,女为U1>U3>U2。CCL、CCW的U1∶U2∶U3比例无性别差异,分别为117∶100∶114、120∶100∶115。结论:本研究关于中国汉族成年人上前牙CCL、CCW/CCL数据可为我国汉族人牙周和修复美学设计及相关产品研发提供参考。Objective:To measure length and width-to-length ratio of clinical crown of upper anterior teeth in Chinese Han adults.Methods:Ninety-one college students of Chinese Han(32 males and 59 females)from Wuhan University were recruited during the year 2011 to 2012.Dental casts were obtained to measure the clinical crown width(CCW)and length(CCL)and width-to-length ratio(CCW/CCL)of upper bilateral central(U1)and lateral(U2)incisors and canines(U3).Results:CCLs of U1,U2 and U3 were 10.27,8.87 and 10.19 mm in male and 9.72,8.36 and 9.46 mm in female,respectively.CCW/CCLs of U1,U2 and U3 were 0.82,0.79 and 0.80 in male and 0.86,0.83 and 0.84 in female,respectively.Regarding CCL,there were significant bilateral differences(left>right,P<0.05)and sex differences(male>female,P<0.01).The CCW/CCLs of U1,U2 and U3 were different between male(U1=U3>U2)and female(U1>U3>U2).In terms of tooth size proportion,there was no sex differences for either CCL(117∶100∶114)or CCW(120∶100∶115).Conclusion:The data regarding CCL and CCW/CCL of upper anterior teeth of Chinese Han adults would provide references for esthetic management of periodontist and prosthodontist and development of related commercial products.

关 键 词：临床牙冠 长度 宽度 宽长比 汉族 

分 类 号：R78[医药卫生—口腔医学]