摘要
目的探讨3种树脂加强型玻璃离子用于口腔科氧化锆陶瓷的粘接效果。方法将烧结成型的氧化锆陶瓷片分为3组,每组20片,分别采用3种树脂加强型玻璃离子粘接剂与喷砂后的氧化锆陶瓷片粘接,在水浴24 h和冷热循环5 000次后测试其粘接剪切强度,数据用SPSS 11.5软件加以统计分析,粘接断面及剖面用扫描电子显微镜观察。结果3种粘接剂与氧化锆陶瓷的粘接剪切强度分别为:(15.1±3.2)、(16.1±4.0)、(18.6±3.4)MPa(水浴24 h后),(5.1±2.1)、(7.5±2.9)、(8.7±2.6)MPa(冷热循环5 000次后)。冷热循环后各组的粘接剪切强度均有明显下降(P<0.05)。结论树脂加强型玻璃离子粘接剂可以与氧化锆陶瓷产生良好的初期粘接强度,但效果不能持久。
Objective To study the bonding efficiency of zirconia ceramics with 3 kinds of resin-reinforced glass ionomer. Methods Blocks of sintered zirconia ceramics were cut and randomly divided into 3 groups with 20 slices each. They were treated with sandblasting and bonded with 3 kinds of resin-reinforced glass ionomer respectively. After preserved in distilled-water for 24 hours and aged by thermocycling 5 000 times, the shear bond strength of these specimens was tested and data were analyzed by SPSS 11.5 system for windows. The bonding face was observed by scanning electron microscope. Results The shear bond strength of the ceramic and 3 kinds of resin-reinforced glass ionomer was （15.1±3.2）, （16.1±4.0）, （18.6±3.4）MPa（after preserved in distilled-water for 24 hours） respectively, and decreased greatly to （5.1±2.1）, （7.5±2.9）, （8.7±2.6） MPa（after thermocycling 5 000 times）. There was obvious statistical difference before and after thermocycling （P〈0.05）. Conclusion Resin-reinforced glass ionomer can get good initial bond strength with zirconia ceramics, but the bonding durability is poor.
出处
《国际口腔医学杂志》
CAS
2013年第3期305-308,共4页
International Journal of Stomatology
基金
江苏高校优势学科建设工程基金资助项目(PADR2011-137)
南京医科大学科技发展基金资助面上项目(2010NJMU110)
