中国五大城市汉族健康人群前牙牙龈颜色分析

摘要

目的:通过测量中国5个主要大城市的健康汉族成人牙龈色部位和地区之间的关系,得出中国五大城市健康汉族人牙龈颜色的分布范围.方法:应用MINOLTA CR-321便携式色差仪对上海、北京、广州、西安、开封的各300名汉族人群(年龄18～80岁,均值44.1岁,标准差12.1)按部位分组进行牙龈颜色采集并分析.结果:①中国汉族人群五大城市健康牙龈色无地区差异(北京、上海、广州、开封、西安,△E＜2).②中切牙附着龈和根间附着龈、中线龈乳头和根间龈乳头的a值无差别(0.02 ＜P＜0.05),中线龈乳头和根间龈乳头b值无差别(P＞0.5),其余部位色度值均存在色差(P＜0.001,△E＞2).③中国汉族人群五大城市牙龈颜色分布范围L*值31.69～56.77,a*值3.58～ 15.66,b*值1.02～7.83.结论:中国汉族人群牙龈颜色并无地区之间的差异,部位之间差别较大.附着龈组较边缘龈组亮度高,颜色偏黄偏红.本研究得到了中国汉族人群牙龈颜色的分布范围L*值31.69～ 56.77,a*值3.58～15.66,b*值1.02～7.83.%Objective In order to get the current distribution range of Chinese Han population healthy anterior gingival color chroma values,the gingival color value of healthy Han people from the 5 major chinese cities and the effects of gender,age,region and areas on it were investigated.Methods 300 healthy Han people were chosen from 5 major cities,and chroma value of their anterial gingival color were measured and analyzed with MINOLTA CR-321 clorimeter.Results ①There was no significant difference on Chinese Han population healthy anterior gingival color by area (△E ＜2); ②The comparison of anterior gingival color chroma values in different regions shows that:The a* values of attached gingiva between the root of two teeth and distal incisor attached gingiva has no significant difference (0.02＜P＜0.05);the b* values of mesial incisor gingival papilla and distal incisor attached gingiva has no significant difference (P＞0.5);the gingival color chroma values of the rest areas have statistical significant differences (P＜0.001).The color difference △E between various parts was ＞2;3.The range of chorma values of Chinese Han population in five major cities was values of L*31.69～56.77,values of a*3.58～15.66,values of b*1.02～7.83.Conclusion This investigation reveals that there was no significant difference on color by area,while the difference in gingival color by regions was significant.Attached gum group is redder and yellower than in the upper edge of gum group.The range of chorma values of Chinese Han population was values of L*31.69～56.77,values of a*3.58～15.66,values of b*:1.02～7.83.