江苏汉族人群上颌前牙牙周生物型调查

A preliminary study on periodontal biotype of Han population in Jiangsu Province

目的 :调查江苏汉族人群上颌前牙牙周生物型的分布,以及牙冠宽长比(crown width/crown length,CW/CL)、龈乳头高度(papilla height,PH)和附着龈宽度(attached gingival width,AGW),为前牙美学区的口腔治疗提供解剖学参考。方法:招募江苏地区牙周健康的汉族志愿者108例(男52例,女56例),根据牙周透射探针法,将上中切牙牙龈分成厚、薄两型,再结合牙齿形态和龈线起伏,细分为薄扇型、厚扇型或厚平型3种牙周生物型。同时,测量CW/CL、PH和AGW,分析上述解剖学指标在不同牙周生物型、性别、年龄和牙位间的分布差异。结果:江苏汉族人群中,薄扇型占30%,厚扇型占19%,厚平型占51%,平均CW/CL 0.84±0.09,平均PH(3.93±0.80)mm,平均AGW(4.80±1.39)mm。厚平型CW/CL和AGW明显大于其余两型(P<0.05),PH明显小于其余两型(P<0.05)。结论 :江苏汉族人群牙周生物型以厚平型为主,口腔治疗的美学风险相对较小,不同牙周生物型的CW/CL、PH和AGW存在差异。

Objective：To explore the distribution of periodontal biotypes and related anatomic parameters in maxillary anterior teeth,including crown width/crown length ratio （CW/CL）,gingival papilla height （PH） and attached gingival width（AGW）,in Han population in Jiangsu Province. Metbods：A total of 108 periodontal healthy Han volunteers （52 males and 56 females）in Jiangsu Province were included. Three kinds of periodontal biotypes ,thin-scalloped ,thick-scalloped and thick-flat, were assessed according to transparency of periodontal probe through gingival margin in maxillary central incisor and some related anatomic characteristics. In addition,CW/CL,PH and AGW of maxillary anterior teeth were also analyzed. Results：In Han population in Jiangsu Province, 30% persons were thin-scalloped type ,51% were thick-flat type, and only 19% were thick-scalloped type. Mean CW/CL in Han population was 0.84±0.09,mean AGW was （4.80±1.39） ram, and mean PH was （3.93±0.80） mm. CW/CL and AGW in thick-flat biotype were significantly higher than those in thick-scalloped and thin-scalloped biotypes（P〈0.05）,while PH in thick-flat biotype was significantly lower than that in the other two biotypes（P〈0.05）. Conclusion：The most popular periodontal biotype in Han population in Jiangsu Province is thick-flat biotype,which is the biotype with lower aesthetic risks. Differences in CW/CL,PH and AGW do exist in different periodontal biotypes.