玻璃离子粘固体表面各种处理方法扫描电镜观察及其与复合树脂间粘结强度

Electromicroscopic Observation on Surfaces of Glass lonomer Cements (GIC) Managed by Different Methods and Measurement of Shear Bond Strength between Gic and Light-Cured Composite Resin

通过对玻璃离子粘固体(GIC)光滑表面进行酸蚀、砂纸打磨及单体、氯仿处理,扫描电镜观察其表面改变,并测定其与光固化复合树脂间粘结强度。结果显示:酸蚀后GIC表面呈珊瑚多孔状结构,砂纸打磨后表面粗糙,原有结构特征消失,而单体及氯仿处理表面改变轻微。酸蚀1分钟十粘结剂处理GIC表面可以明显提高GIC与光固化复合树脂间粘结强度,优于单独酸蚀或仅涂布粘结剂处理,也优于其他方法表面处理,他们之间有非常显著差异(P<0.01)。酸蚀1 分钟十粘结剂处理GIC表面与光固化复合树脂间可获有效粘结,对临床使用夹层技术有指导意义。

Acid -etching,roughening with sand paper and treating with monomer or chloroform,the surfaces of glass ionomer cements (GIC) were observed by scanning electron microscope, moreover,shear bond strength between GIC and light -cured compsite resin was measured. The results indicated that the acid - etching surface was rough and coral - liked,and that the shear bond strength could be improved significantly by acid-etching for the GIC surfaces before the application of the bonding agent(P<0. 01). The finding would be of instructive significance for the clinical application of GIC as the bases of light -cured composite resin.