含氟牙釉质粘接剂释氟的实验研究

Study of Fluoride Released from Fluoride-releasing Adhesives

目的研究国产含氟牙釉质粘接剂的释氟性能。方法制备含氟牙釉质粘接剂Ⅰ型及Ⅱ型的测试标本,以ORION720型离子选择性氟电极、参比电极测试氟离子浓度。结果Ⅰ型及Ⅱ型含氟牙釉质粘接剂均有氟离子释放,且在第一个24h后氟离子浓度下降显著,可维持21d左右;Ⅱ型含氟牙釉质粘接剂初始状态释放氟离子水平较高。结论Ⅰ型及Ⅱ型含氟牙釉质粘接剂均有释氟性能,而以Ⅱ型含氟牙釉质粘接剂较佳。

Objective To study the fluoride release ability of two kinds of fluoride-releasing composite resin adhesives made in China. Methods Test samples of fluoride-releasing composite resin adhesives Ⅰand Ⅱ were prepared, and fluoride ion concentrations were measured with a No.720 fluoride ion-sensitive electrode. Results Fluoride ions were released from both of the fluoride-releasing composite resin adhesives . The concentration declined sharply after first 24 hours and maintained at a low level for about 21 days. The initial fluoride ions concentration of adhesive Ⅱ was higher than adhesive Ⅰ. Conclusion Both of the fluoride-releasing composite resin adhesives had the ability of releasing fluoride. Adhesive Ⅱ seemed better.