氧化锆陶瓷-复合树脂粘结界面耐老化性能的研究

Aging resistance performance of the composite resin / zirconia ceramics interface

目的探讨对氧化锆瓷层不同表面处理后,结合硅烷偶联剂的应用,通过人工老化实验,对比氧化锆瓷表面与复合树脂之间剪切粘结强度的影响,为临床应用提供依据。方法将120个试件随机分成酸蚀、喷砂、喷砂加酸蚀、空白组4组,各组再分为涂布硅烷偶联剂组和对照组,充填复合树脂2 mm。经人工老化实验后,利用万能试验机对比其剪切粘结强度。结果氧化锆瓷层表面3种表面处理组,酸蚀并结合硅烷偶联剂组所获得的粘结强度最大,喷砂组其次,喷砂加酸蚀组最低。结论经过3种不同表面处理后,均能提高瓷层表面与复合树脂之间的粘结剪切强度,酸蚀组效果最佳。通过耐老化实验比较分析瓷表面应用硅烷偶联剂有利于提高瓷与复合树脂间的粘接强度。

Objective Through artificial aging experiment to explore the effect of different surface treat- ments of zirconia ceramic surface layer in combination with silane coupling agent on the shear bond strength between the eomposite resin and zirconia ceramic surface, and to provide experimental support for clinical application. Methods 120 specimens were randomly divided into four groups： pickling, sand blasting, sand blasting plus acid corrosion, and blank groups. Each group was then divided into coating plus silane coupling agent and control subgroups. The depth of composite resin filling was 2 mm. After theartificial aging experiment, the shear bond strength of the samples was measured by a universal testing ma- chine and the data were analyzed. Results The bond strength of the surface treatment of the zirconia ce- ramic surface layer groups and the acid corrosion combined with silane coupling agent group was strongest, followed by sandblasting group, and the least was that of the sand blasting plus acid corrosion group Conclusions The shear bond strength of the porcelain/resin interface is improved after all the three kinds of porcelain surface treatment, and that achieved by acid corrosion is the best. To analyze the resist- ance performance of the composite resin/porcelain interface through artificial aging experiment is benefi- cial for improving the bond strength between porcelain surface and composite resin.