【摘要】 目的 :测定应用氟化物的不同方法对釉质吸收氟离子的影响。方法 :采用因固定正畸需要而拔除的双尖牙 12颗 ,随机分成对照组、酸蚀中用氟组和酸蚀后用氟组 ,每组牙釉质经酸蚀和不同用氟方法处理后 ,做扫描电镜检查。结果 :酸蚀后用氟组釉质表面的反应产物最多 ,釉质吸收的氟离子最多。结论 :酸蚀后用氟是一种固定正畸治疗中较好的预防早期釉质龋的方法。更多还原

【Abstract】 Objective: To determine which method of topical fluoride application could make the enamel uptake more fluoride. Methods: 12 extracted human premolars were divided into three groups of 4 teeth each: Group 1, control and not applying fluoride; Group 2, applying fluoride during etching; Group 3, applying fluoride after etching. In each group, the teeth were treated with etching and fluoride respectively. The specimens were then examined with scanning electron microscopy. Results: The results showed that there were more reaction products on the enamel surface of Group 3. Conclusion: There was more fluoride uptake into the enamel treated with fluoride after etching.更多还原