氟化钠、茶多酚对牙釉质再矿化效果分析

目的 探讨氟化钠、茶多酚对牙釉质再矿化效果.方法 选人体离体牙24颗,随机均分为4组.A组电镜观察未脱矿釉质表层,B、C、D组脱矿后分别涂抹去离子水、NaF溶液、茶多酚溶液.再矿化完成后,用肉眼、电镜观察样本并记录脱矿指标,同时用显微硬度计测量各样本表面的硬度.结果 氟化钠组和茶多酚组均可见釉质有多边形不规则沉积物覆盖于釉面微孔隙表面,但茶多酚组能观察到明显微孔隙.再矿化后各组釉质块的显微硬度平均值均有所上升,氟化钠组升高最多,茶多酚组次之,差异有统计学意义(P<0.05).结论 氟化钠与茶多酚均能促进再矿化的形成、恢复牙釉质,氟化钠的效果更佳.

Objective To investigate the effect of sodium fluoride and tea polyphenols on enamel remineralization.Methods Divide 24 teeth into 4 groups randomly.The surface layer of non-demineralized enamel was observed by electron microscope in group A.After demineralization,groups B,C and D were evenly coated with deionized water,NaF solution and tea polyphenols solution.After the remineralization experiment,the sample surface was observed by naked eye and electron microscope,and the demineralization index was recorded,while the microhardness of each sample surface was measured by microhardness meter.Results The results of electron microscope showed that both the sodium fluoride group and the tea polyphenol group were visible with polygonal iregular sediments covering the surface of the glazed microporous,but the tea polyphenol group could see significant microporosity.After remineralization,the average microhardness of each group of enamel blocks increased,the sodium fluoride group increased the most,and the tea polyphenol group was second,with significant statistical differences(P<0.05).Conclusion Both sodium fluoride and tea polyphenols can promote the formation of remineralization and restore enamel,and the effect of sodium fluoride is better.