摘要目的 研究Cercon氧化锆陶瓷表面不同处理方法对含有磷酸酯粘接单体的Panavia F的剪切强度的影响.方法 采用600号砂纸打磨、喷砂、硅烷化、喷砂加硅烷化4种表面处理方法,对完全随机分组的4组氧化锆陶瓷试样进行单面处理.在玻璃模具的辅助下,将两块不同规格的试样中心相对地用Panavia F树脂类水门汀加压粘接固定,万能实验机测定剪切强度并进行统计学分析.结果 600号砂纸打磨试样剪切强度(21.50±1.98)、喷砂组剪切强度(23.68±2.31)、硅烷化剪切强度(20.69±1.55)、喷砂+硅烷化(24.01±2.19) MPa,其总体均数不相等,其中,喷砂组和喷砂加硅烷化组高于600号砂纸打磨组和硅烷化组,P ＜0.05；喷砂组和喷砂加硅烷化组之间,以及600号砂纸打磨组和硅烷化组之间的差异无统计学意义(P＞0.05).结论 喷砂是提高树脂粘接剂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.

abstractsObjective To study the effect of surface treating methods on the shear strength of Panavia F luting cements to Cercon zirconia.Methods Forty sample disc of Cercon zirconia with 20 mm in diameter and 4 mm in height were prepared.Another 40 sample discswith 5 mm in diameter and 4 mm in height were also prepared Both of the two types of samples were randomly devided into four groups A,B,C,and D in whichdifferent surface treatments were delivered.In group A samples was treated with 600 # sand paper,and in group Bwith sand blasting,and silanization in group C,and sand blasting plus silanization in group D.All samples were bonded with Panavia F luting cement under the aid of glass mould.The value of shear strength was measured and statistically analysed.Results The shear strength of four groups of samples were (21.50 + 1.98 ),(23.68 + 2.31 ),(20.69 ± 1.55 ),(24.01 + 2.19 ) M Pa respectively.The population mean was not equal.There was no significant difference between 600 # sand paper treated group and silanization group,nor between sand blasting group and sand blasting plus silanization group.Conclusions Sand blasting is a effective means to increase the shear strength,and 600 # sand paper treatment and silanization can't increase the shear strength.