摘要
背景:选择适当的表面处理方法,选用适宜的黏结剂种类,可以有效地提高临床氧化锆修复体的黏结效果。目的:研究氧化锆表面不同处理方法和黏结剂种类对Upcera氧化锆陶瓷之间剪切强度的影响。方法:将72个试件采用600#砂纸打磨抛光分为6组,分别选择240#砂纸打磨粗化、喷砂、硅烷化3种表面处理方法,电镜观察处理前后的表面形貌。黏结剂选择PanaviaF树脂水门汀和FujiCEM树脂加强型玻璃离子水门汀,加压黏结固定24h后,万能实验机测定剪切强度数值,进行析因方差分析。结果与结论:喷砂组剪切强度高于240#砂纸打磨组和硅烷化组(P<0.05)。树脂水门汀的剪切强度显著高于树脂加强型玻璃离子水门汀(P<0.05)。喷砂后试件表面形貌最为粗糙,240#砂纸打磨和硅烷化对表面形貌的改变较小。提示喷砂是提高树脂水门汀和树脂加强型玻璃离子水门汀与氧化锆陶瓷剪切强度的有效方法,而砂纸打磨和硅烷化并不能显著提高剪切强度。对于临床黏结条件差的修复体,树脂水门汀可提供更高的黏结强度。
BACKGROUND： Reasonable choice of surface treating method and cement can improve the bond performance effectively when using zirconia restorations in clinic. OBJECTIVE： To evaluate the effects of different surface treatments and types of cements on the shear strength of Upcera zirconia. METHODS： Seventy-two zirconia ceramic samples after sanding with 600# water sandpaper were divided into six groups. Three different surface treating methods were used respectively as follows： hand-polishing with 240# water sandpaper, sand blasting and silanization. Before and after the surface treatment, the samples were observed by scanning electron microscope. Two different luting cements （Panavia F and Fuji CEM） were selected. After 24 hours of pressurized bonded fixation, the shear strengths were measured by universal testing machine and analyzed with factorial variance analysis. RESULTS AND CONCLUSION： The shear strength in the sand blasting group was significantly higher than other groups （P〈0.05）. The shear strength of the Panavia F group was higher than that of the Fuji CEM group （P〈0.05）.The surface morphology of samples treated with sand blasting was rougher compared with the other two. Findings of this study revealed that sand blasting can effectively enhance the shear strength of zirconia ceramic to both resin cement and glass ionomer cement; on the contrary, sand paper polishing and silanization cannot affect the shear strength. What is more, resin cement performs better in improving the bond performance of zirconia ceramic restorations.
出处
《中国组织工程研究》
CAS
CSCD
2012年第8期1435-1438,共4页
Chinese Journal of Tissue Engineering Research
基金
国家自然科学基金项目(50872152)
广东省自然科学基金项目(9151051501000072)
广州市白云区科技计划项目(2010-KZ-20)
南方医科大学南方医院院长基金(2009B016)~~
