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局部应用氟化物对果汁饮料导致年轻恒牙牙釉质脱矿的影响_王晓丽

[收稿日期]2009-10-21;[修回日期]2010-02-01

[基金项目]上海交通大学医学院优秀中青年科学基金(040407)

[作者简介]王晓丽(1961-),女,硕士,教授,主任医师[通信作者]王晓丽,Tel :021-********-5521,E-mail :XSJ@http://www.wendangku.net/doc/6c524898daef5ef7ba0d3ca9.html

c 2010年版权归《上海口腔医学》编辑部所有[文章编号]1006-7248(2010)06-0647-06

局部应用氟化物对果汁饮料导致年轻恒牙牙釉质脱矿的影响

王晓丽,钮晓勇

(上海交通大学附属第一人民医院口腔科,上海200080)

[摘要]目的:比较局部应用氟化物处理年轻恒牙牙釉质后,釉质表面抵抗果汁类饮料酸蚀及脱矿牙釉质再矿化的变化。方法:采用维氏显微硬度仪,观测年轻恒牙牙釉质经果汁饮料浸泡后再经氟化物局部处理,或用0.1%NaF 溶液及含氟牙膏处理后再经饮料浸泡的表面显微硬度(SMH )变化;应用扫描电镜(SEM )观察各实验组牙釉质表面形态的变化;采用Roche 生化分析仪,测定恒牙牙釉质饮料处理前后饮料中钙、磷含量的变化;采用SPSS15.0软件包中的单因素方差分析法进行统计学分析。结果:果汁饮料浸泡后,可导致年轻恒牙牙釉质钙、磷溶出和表面显微硬度下降;果汁饮料侵蚀后再经氟化物局部处理的年轻恒牙,釉质的显微硬度显著增加(P <0.05);氟化物及含氟牙膏处理釉质表面后再经果汁饮料浸泡,则釉质的钙、磷溶出和表面显微硬度的下降显著减少(P <0.05)。扫描电镜下可见各实验组釉质表面经饮料及各种氟化物处理后呈现不同程度的釉质溶解和再矿化。结论:果汁类饮料会导致牙釉质脱矿。而在釉质表面应用氟化物,能增强牙釉质抵抗饮料的酸蚀,并能促进酸蚀后的牙釉质再矿化。

[关键词]牙釉质;酸蚀;氟化物;再矿化;表面显微硬度

[中图分类号]R781.2[文献标志码]A

Effect of topical fluoride application on young permanent teeth enamel demineralized by juice drinks WANG Xiao -li ,NIU Xiao -yong.

(Department of Dentistry ,First People ’s Hospital ,Shanghai Jiao Tong University.Shanghai

200080,China)

[Abstract]PURPOSE:To observe the capability of enamel surface resisting juice drinks erosion and the remineralization process of etched enamel after topical fluoride application on young permanent teeth enamel.METHODS:The change of surface microhardness (SMH)of young permanent teeth enamel fluoride which was immersed in orange juice in advance and then applied on its etched part was evaluated.The change of SMH of young permanent teeth enamel treated by 0.1%NaF solution and fluoride toothpaste in advance and then immersed by juice drinks was observed.The change of enamel SMH was measured by a Leitzs microhardness tester.The morphological change of enamel surface was observed under scanning electron microscope (SEM).The change of calcium and phosphate contents in juice drinks before and after

enamel immersion was analyzed by Roche biochemical analyzer.One -way ANOVA was performed using SPSS 15.0software package.RESULTS:Juice drinks led to the dissolution of calcium and phosphate in young permanent teeth enamel while the SMH of enamel decreased.The SMH of young permanent teeth enamels immersed in orange juice and then topical application of fluoride increased significantly (P <0.05).But for those young permanent teeth enamels treated with fluoride or fluorin enhanced toothpaste,the dissolution of calcium and phosphate and the SMH decreased significantly after juice drinks immersion (P <0.05).The variable degree of etching and remineralization of the enamel either treated by juice drinks or by fluoride in each experimental group was found by SEM.CONCLUSIONS:Enamel demineralization can be caused by juices drinks.Topical fluoride treatment on enamel can not only enhance enamel ’s resistance to the acid etch caused by soft drinks but also promote the remineralization of enamel immersed by beverages.

Supported by Excellent Middle-Aged Science Foundation of Shanghai Jiao Tong University School of Medicine(Grant No.040407).[Key words ]Enamel ;Erosion ;Fluoride ;Remineralization ;Surface microhardness

Shanghai J Stomatol,2010,19(6):647-652.

上海口腔医学2010年12月第19卷第6期

Shangh ai Journal of Stomatology Vol.19No.6December ,2010647

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