目的 初步获得年轻汉族人群牙龈厚度的大体分布比例及对比分析,为临床更合理的口腔治疗和预后评估提供理论数据.方法 按标准纳入30位牙周健康者行锥形束CT(CBCT)扫描,测量唇颊侧釉牙骨质界处牙龈厚度,分为薄型牙龈组与厚型牙龈组,并结合CBCT数据进行统计学分析.结果 上颌中切牙牙龈平均厚度1.43 mm,显著厚于上颌尖牙平均牙龈厚度1.12 mm和上颌侧切牙平均牙龈厚度1.11 mm,且厚于下颌各位点平均牙龈厚度,差异均有统计学意义(P0.05).结论 通过CBCT测量汉族年轻人群健康牙龈厚度得出其仅与牙位相关,性别差异对牙龈厚度无显著影响,临床检查薄型牙龈与厚型牙龈在牙周组织健康的汉族年轻人群中各占约.%Objective To assess the general distribution proportion of the gingival thickness of the young Han population,to provide theo-retical data for the more reasonable oral treatment and accuracy prognosis. Methods The gingival thickness of the cemento - enamel junction at labial side of thirty periodontal healthy subjects were measured by CBCT. The subjects were divided into " thin group" and " thick group",the data were statistically analyzed,then initially proposed the distribution of gingival biotypes of young Han Chinese people. Results The average thick-ness of the maxillary central incisor gingiva was 1. 43 mm,which was significantly thicker than the upper canine (1. 12 mm)and maxillary lateral incisor (1. 11 mm)(P < 0. 05). It was also thicker than all the mandibular sites (P < 0. 05). There was no significant difference between male and female. Conclusion According to the CBCT measurement of the gingiva biotypes of young Han Chinese people,the gingival thickness was only related to the tooth position. Gender difference has no effect on the gingival thickness. " Thin gingiva group" and " Thick gingiva group" count 50％ respectively of the young Han population .
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