牙齿美白剂及酸性饮料对釉质表面结构的影响  

Effects of tooth whitening agents and acidic drinks on the surface properties of dental enamel

作　　者：陈晓玲[1] 陈志群[1] 林垚[1] 邵金铨[1] 尹路 

机构地区：[1]福建医科大学教学医院·厦门市口腔医院牙体牙髓病科 [2]修复科,厦门361003

出　　处：《华西口腔医学杂志》2013年第5期530-532,共3页West China Journal of Stomatology

基　　金：福建医学创新基金资助项目(2012-CXB-039);厦门市科技惠民计划资助项目(3502Z20134046);福建省卫生厅青年科研课题基金资助项目(2013-2-105)

摘　　要：目的比较冷光牙齿美白胶贴和酸性饮料对离体牙釉质表面形貌以及Ca/P值和显微硬度的影响。方法分别用冷光牙齿美白胶贴、可乐、橙汁对新鲜离体牙表面进行涂覆处理(以生理盐水为对照组),经过即刻、7 d、14 d后分别用扫描电子显微镜观察处理前后离体牙的表面形貌和表面Ca/P值变化,用显微硬度仪检测处理前后釉质显微硬度的改变。结果处理后即刻,3个实验组的釉质表面均有脱矿现象,Ca/P值和显微硬度值均降低,明显小于对照组(P<0.05);7 d后逐渐升高,14 d后与对照组无明显差异(P>0.05)。结论牙齿美白剂对釉质有一过性脱矿作用,与日常饮用的酸性饮料相比,其脱矿属于正常范围,且随着时间推移,釉质可以发生再矿化。Objective Using tooth whitening agents （bleaching clip） in vitro and acidic drinks, we conducted a compara- tive study of the changes in enamel surface morphology, Ca/P content, and hardness. Methods Tooth whitening glue pieces, cola, and orange juice were used to soak teeth in artificial saliva in vitro. Physiological saline was used as a control treatment. The morphology of the four groups was observed under a scanning electron microscope （SEM） immediately after the teeth were soaked for 7 and 14 d. The changes in Ca/P content and microhardness were analyzed. Results The enamel surfaces of the teeth in the three test groups were demineralized. The Ca/P ratio and the average microhardness were significantly lower than those of the control group immediately after the teeth were soaked （P〈0.05）. The Ca/P ratio and microhardness gradually increased after 7 d. No significant difference was observed between the control group and the test groups after 14 d （P〉0.05）. Conclusion Bleaching agents caused transient demineralization of human enamel, but these agents could induce re-mineralization and repair of enamel over time. Demineralization caused by bleaching covered a relatively normal range compared with acidic drinks and daily drinking.

关 键 词：冷光美白 釉质 能谱分析 显微硬度 

分 类 号：R781.2[医药卫生—口腔医学]