抛光对牙齿表面色素再沉着的影响

The effect of polishing on stain redeposition of the teeth

目的:观察超声洁治及喷砂法去除色素后,牙齿表面抛光对牙外源性色素再沉着的影响。方法:用红茶和洗必泰液作为外源性着色液,以超声洁治和喷砂法去除32颗牙齿色素后,随机分为抛光组和对照组并浸入外源性着色液,记录实验前后牙齿表面白色度值,比较抛光对牙齿表面着色的影响。结果:经抛光处理后,牙齿表面的外源性色素附着明显减少,抛光组的白色度值明显低于对照组。结论:抛光牙齿表面,可以明显减少外源性色素的再附着。

Objective To observe the effect of dental polished surface about extrinsic stain redeposition after ultrasonic scaling and sandblasting respectively. Methods Black tea and chlorhexidine mouthwash were used as extrinsic dental stain solution. After the stains removed by ultrasonic scaling and sandblasting, 32 teeth were divided into polished and control group randomly, all the teeth were immerged into the extrinsic dental stain solution. Then the white chroma recorded by digital camera was compared before and after the experiment. ＇Results After polishing, the extrinsic stain was reduced obviously, and the white chroma of the polished group was much lower than the control＇s. Conclusion The redeposition of extrinsic stain can be reduced obviously after polishing.