冷光美白技术对人牙釉质硬度的影响  

The effect of cold light whitening technique on enamel microhardness

作　　者：赵奇[1] 哈庆[1] 冯朝华[1] 郑刚[1] 

机构地区：[1]北京大学口腔医学院门诊部,100034

出　　处：《现代口腔医学杂志》2008年第3期260-262,共3页Journal of Modern Stomatology

摘　　要：目的研究冷光美白技术对人牙釉质硬度的影响。方法选择正畸拔出的双尖牙15颗,颊面近中部分进行美白,远中部分作为空白对照,显微硬度计测量近中和远中牙釉质表面硬度。结果美白后牙釉质硬度(Hv0.5)为361.0±8.9,空白对照组釉质硬度是365.7±5.8,两组釉质硬度差异无统计意义(P>0.05)。结论冷光美白不降低牙釉质表面硬度。Objective To evaluate the effect of Beyond cold light whitening technique on enamel microhardness. Methods Fifteen human premolars extracted for orthodontics were selected. Their facial surfaces were divided by flowable resin, the mesial parts of facial surfaces were bleached by Beyond cold light tooth whitening kit, the distal parts served as blank control. The enamel mierohardness was measured. Results The mean microhardness of mesial parts was 361.0± 8.9, the dital blank control was 365.7 ± 5.8, there was no significant difference between mesial part and distal part on enamel microhardness. Conclusion Beyond cold light whitening had no effect on enamel mierohardness.

关 键 词：牙齿漂白 釉质硬度 过氧化氢 

分 类 号：R781.05[医药卫生—口腔医学]