【摘要】 目的 了解树脂型氟离子缓释正畸粘接剂(Fluoride Releasing Adhesive，FRA)缓释氟离子的性能，并比较FRA和目前临床常用的2种正畸粘接剂的粘接抗张强度和粘接抗剪强度，全面评价其氟离子缓释和粘接性能。方法 (1)测定并计算FRA在一定时间中累计氟离子释放量，绘制出时间—氟离子累计释放量趋势线，并计算每单位质量FRA有效氟离子释放量。(2)分别用3种粘接剂粘接牛牙釉质和金属托糟，在离体实验条件下，测试其粘接抗张强度和粘接抗剪强度并进行比较。结果 时间—氟离子累计释放量趋势线显示，FRA在90天内能持续、稳定地释放氟离子，每单位质量FRA在90天内有效氟离子释放量为449μg/g。3种粘接剂之间粘接抗张强度和粘接抗剪强度均没有统计学差异(P>0.05)。结论 FRA具有稳定缓释氟离子的能力，每单位质量FRA有效氟离子释放量达到了449μg/g。且FRA可以达到临床使用的粘接强度要求，在3个月的时间内，FRA中氟离子的释放没有对FRA的粘接强度产生不利的影响。

    关键词 正畸粘接剂 氟离子释放量 抗张强度 抗剪强度

    Study on the retarded releasing and adhesive capability of resinous fluoride releasing adhesive

    Lian Rui，Chen Song，Fang Guozhen，et al.

    The Second People’s Hospital of Shenzhen，Shenzhen，Guangdong518035

    【Abstract】 Objective To observe the retarded releasing capability of resinous fluoride releasing adhesive(FRA)and to establish a set of methods and indexes to evaluate that capability.To compare the tensile and shear strength of fluoride releasing adhesive(FRA)and other two types of ordinary orthodontic adhesives.Methods (1)The trendline of time-total fluoride weight was drawn and effective fluoride releasing of each unit of FRA was calculated based on the measurement and account of total fluoride releasing in a certain period of time.(2)The tensile and shear strength of three kinds of adhesives between bovine enamel and metal brackets were determined respectively in vitro.Results The trendline of time-total fluoride weight showed that FRA could release fluoride continuously and steadiˉly in90days and the effective fluoride releasing of each unit of FRA was449μg/g.The tensile and shear strength of three kinds of adhesives were not different statistically(P>0.05).Conclusion FRA can release fluoride slowly and steadily and the effective fluoride releasing of each unit of it can be449μg/g.FRA can meet the clinical adhesive reˉquire and the fluoride has no bad effect on its adhesive strength in3months. Key words adhesive fluoride releasing tensile strength shear strength ......