吸烟引起牙内源性着色的临床研究

Clinical study on smoking causing dental endogenous shading

目的:通过比较去除烟斑的吸烟者与不吸烟者牙齿颜色的变化,探讨吸烟是否引起牙齿内源性着色,为口腔临床比色和牙齿美白提供参考。方法:将满足条件的病例按吸烟与否及烟龄分为3组,即第1组非吸烟组、第2组烟龄小于20年组和第3组烟龄大于20年组,由同一名测试者用电脑比色仪对其右上中切牙进行比色,记录明度、彩度、色相a、值和b值,利用Spss17.0进行统计分析。结果:第1组的明度值分别与第2组、第3组比较,结果均有统计学意义,但第2组与第3组的明度值比较无统计学意义;第1组的a值分别与第2组、第3组比较均有统计学意义,但第2组与第3组的a值比较无统计学意义;3组在彩度、色相、b值上的比较均无统计学意义(P>0.05)。结论:吸烟会引起牙齿内源性着色,吸烟量在每日10支以上者,牙齿颜色的明度降低,色泽更灰暗。尚不能证明牙齿颜色与烟龄的关系。

Objective To provide reference to clinical shade and dental whitening,discuss smoking whether causing dental endogenous shading through contrasting dental color of smokers wiped off korron and no-smokers.Methods Subjects were divided to 3 groups according to whether smoking or not and smoking time.Non-smokers were divided to 1st group,smokers whose smoking time less than 20 years 2nd group and smokers whose smoking time more than 20 years 3rd groups.The same person shaded the subjects＇ right upper incisors with VITA Easyshade and recorded value,chroma,hue and ab values.Then analysed the results with statistic software Spss17.0.Results There were significant difference on value and a value between 1st group and 2nd or 3rd group,but no difference between 2nd group and 3rd group.There were no ststistic difference on chroma,hue and b value among the three groups.Conclusion Smoking will cause dental endogenous shading.Smokers＇ teeth will become more dark who smoke more than 10 cigarettes a day.There is no evidence demonstrating the relations of dental color and smoking time.