87 periodontally healthy young volunteers paticipated in the study.4 clinical parameters were measured:Gingival thickness (GT),gingival width (GW),papilla height (PH) and crown width/crown length ratio (CW/CL).Cluster analysis was employed to identify the periodontal phenotypes.As a result,the periodontal phenotype of maxillary anterior tooth was classified as thin fan type (Ⅰ,n =31),thick and wide type(Ⅲ,n =8) and intermediate type(Ⅱ,n =48) in Han Chinese.%纳入87名牙周健康的青年志愿者,测量并记录上前牙区以下数据:牙龈厚度(GT)、角化龈宽度(GW)、龈乳头高度(PH)和牙冠宽长比(CW/CL),用聚类分析法对牙周表型归类.结果提示在一定的中国汉族青年人群中,分别存在着薄扇型(Ⅰ,n=31)、厚平型(Ⅲ,n=8)和中间型(Ⅱ,n=48)3种牙周表型.
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