摘要
目的 :观测牙釉质酸蚀后不同时间点的氟离子释出量 ,评价含钙的氟化钠溶液对牙釉质抗酸溶解性作用的效果。方法 :选取釉质完好的新鲜人牙 75个 ,随机分为 3组 ,分别用含相等氟离子的 0 .5 %NaF溶液和 0 .5 %NaF+2 %CaCl2 溶液及去离子水处理 8h后 ,所有样本浸泡于乳酸凝胶中 ,观察第 1、3、7、14、36h酸蚀液中牙釉质释出的氟离子含量。结果 :0 .5 %NaF +2 %CaCl2 溶液组较 0 .5 %NaF组在不同时间点释出的氟含量有统计学差异 ,两组与对照组相比氟离子浓度明显增加 (P <0 .0 0 1)。结论 :含氟溶液可以增强牙釉质的抗酸能力 ,钙离子能延长氟离子的作用时间 。
Objective:To measure the concentration of fluoride at d if ferent time after acid.Evaluate the effect on anti-acid solubility of Sodium flu oride solution contained Calcium.Methods:75 premolars were selected and random divided into three groups. One group served as an untreated control (de-ionic group).Other groups contained same fluoride were 0.5% NaF and 0.5% NaF+2% CaCl 2.After 8 hour, measure the concentration of fluoride in lact ic acid gel at 1,3,7,14,36 hour.Results:The two groups , which contained fluoride,showed significantly more fluoride ion than the non-f luoride group at different time, especially the group of 0.5% NaF+2% CaCl 2 ( P <0.001).Conclusions:Fluoride solution in this experimen t can prevent enamel from acid solubility, Calcium can enhance the time of fluor ide treating, increase acid-resisted and reduce the demineralization effectively .
出处
《口腔医学研究》
CAS
CSCD
2003年第5期359-361,共3页
Journal of Oral Science Research
