三种粘结系统与牙本质的粘结强度的比较

The Comparison of the Bonding Strength of Three Different Adhesive Systems on the Dentin Surface

目的:对比3种不同粘结系统与牙本质之间的粘结强度。方法:选用两步法自酸蚀粘结系统Fluoro-Bond、一步法自酸蚀粘结系统iBond,全酸蚀粘结系统Single bond,按照厂家推荐步骤应用于湿润的样本牙本质表面,用树脂z-350(3M公司)修复至同一高度,测量每个样本粘结面的实际面积,通过微拉伸实验,计算各个样本的微拉伸粘结强度。结果:iBond组的微拉伸粘结强度低于Fluoro-Bond组和SingleBond组,差异有统计学意义(P<0.05),后两者差异无统计学意义(P>0.05)。结论:自酸蚀两步法粘结系统的粘结强度与全酸蚀粘结系统相当,但均高于自酸蚀一步法粘结系统。

Objective：To contrast the bonding strength of three different adhesive systems on dentin surface.Methods：Following the patterns that the factory advised,two-step self-etching adhesive system（Fluoro-Bond）,one-step self-etching adhesive system（iBond） and totally etching adhesive system（single bond） were used to wet dentin surface condition,resin composite Z-350 was bonded to dentin to reach the same height,measure the areas of each specimen,then compute the bonding strength that base on the microtensile experiment.Results：Two-step self-etching adhesive system revealed lower bonding strength than the other adhesive systems（P0.05）,Fluoro-Bond and single bond were not significantly different（P0.05）.Conclusion：Two-step self-etching adhesive system is equal to totally etching adhesive system,one-step self-etching adhesive system is inferior to the others.