氟化钠涂膜对放射线照射下牙釉质显微硬度的影响  

Effect of fluoride varnish on microconsistency of enamel under irradiation

作　　者：郭亚丽[1,2] 苟建重[1] 许志鹏[2] 

机构地区：[1]西安交通大学医学院口腔医院口腔内科,陕西西安710004 [2]陕西省人民医院口腔科,陕西西安710068

出　　处：《西安交通大学学报（医学版）》2008年第5期577-578,585,共3页Journal of Xi’an Jiaotong University（Medical Sciences）

基　　金：陕西省科技攻关资助项目[No.2005K14-G2(6)]

摘　　要：目的体外研究氟化钠涂膜对放射线照射后牙釉质显微硬度的影响。方法正常牙釉质标本随机分为4组,分别是:空白组、单纯照射组、涂膜组、涂膜照射组。采用MH-5型显微硬度计测量处理前、处理后及抗龋实验后牙釉质标本的显微硬度,观察牙釉质显微硬度的变化。结果氟化钠涂膜具有抑制酸蚀后牙釉质显微硬度降低的作用。单纯照射组牙釉质显微硬度值显著低于空白组(P<0.05),而涂膜照射组牙釉质显微硬度值显著高于单纯照射组(P<0.05)。结论在放射线照射前于牙釉质表面涂布氟化钠涂膜能减少釉质结构的破坏,提高其抗酸溶解性。Objective To study the effect of fluoride varnish on microconsistency of enamel after under irradiation in vitro. Methods Normal enamel samples were randomly divided into four groups： control group,irradiation group,fluoride varnish group and fluoride varnish-irradiation group.The microconsistency of enamel surface before and after treatment,after anti-caries test was measured by type MH-5 durometer. Results Fluoride varnish had an inhibitory effect on the decrease of enamel microconsistency etched with lactate buffer.The microconsistency in irradiation group was obviously lower than that in control group（P 〈0.05） and that in fluoride varnish-irradiation group was obviously higher than that in irradiation group（P 〈0.05）. Conclusion Fluoride varnish on enamel before irradiation can effectively decrease the destruction of enamel structure and enhance the resistance acid of enamel.

关 键 词：放射线 氟化钠涂膜 釉质 显微硬度 

分 类 号：R780.1[医药卫生—口腔医学]