不同剂型玻璃离子水门汀溶解性比较研究

Comparison of solubility of different styles of cements

目的:研究、比较不同剂型玻璃离子水门汀的溶解性和表面微观形态改变,为临床使用提供依据。方法:将3M树脂加强型玻璃离子水门汀(水粉剂型)、GC玻璃离子水门汀(水粉剂型)及GC玻璃离子水门汀(双糊剂型)分别在人工唾液中浸泡30d,冷热循环15000次,烘干测重,比较前后质量变化,计算溶解率,并用扫描电镜观察表面微观改变。结果:不同剂型的玻璃离子水门汀溶解率由高到低分别为3M树脂加强型玻璃离子水门汀(水粉剂型)、GC玻璃离子水门汀(水粉剂型)、GC玻璃离子水门汀(双糊剂型)。3种玻璃离子水门汀经浸泡溶解后,SEM扫描表面微观形态可观察到GC玻璃离子水门汀(双糊剂型)表面形态改变较少,其他2组玻璃离子水门汀表面微观改变较多。结论:双糊剂型玻璃离子水门汀理化性能及溶解率均低于传统水粉剂型,是未来临床修复治疗的的良好选择。

AIM： To compare the solubility and micro alter in surface of different styles of cements and prove the data in clinical use. METHODS： Three types of cement （3M ESPE RelyXtm Luting Cement water- paste style, GC Fuji PLUS water - paste style, GC Fuji CEM paste - paste style） were dipped in artificial saliva for 30 d and were thermal cycle for 15000 times at the same time. Then the solubility of three types of cements was calculated and the surfaces of samples were observed under scanning electron microscope. RUSULTS： Significant differences in solubility were found among different type of style cements （ P 〈 0.05 ）. The descending sequence of solubility was 3M ESPE RelyXTM Luting Cement , GC Fuji PLUS , GC Fuji CEM . According to the SEM observation, the surfcae of GC Fuji CEM has less alteration than other experimental materials. CONCLUSION ： The paste - paste style cement is the best choice for filling and adhesion because of its low solubility.