瓷表面不同处理方法及粘结剂对全瓷剪切强度的影响

目的:观察喷砂、酸蚀及硅烷偶联剂等表面处理方法对热压铸陶瓷,玻璃渗透陶瓷和氧化锆陶瓷与不同种粘结剂的粘结强度的影响。方法:样本分为热压铸陶瓷组,渗透陶瓷组和氧化锆陶瓷组。分别应用不同表面处理方法和粘结剂,测其剪切强度。结果:方差分析表明,热压铸陶瓷组中酸蚀涂硅烷树脂粘结组粘结强度最高,渗透陶瓷组中喷砂玻璃离子粘结组粘结强度最高,氧化锆陶瓷组中喷砂玻璃离子粘结组粘结强度最高。结论:应用常规树脂粘结剂粘固热压铸陶瓷修复体取得较好的粘固效果,采用酸蚀和硅烷偶联剂的表面处理,可取得最大粘结强度。

Effect of different surface conditioning on shear bond strength of different types of luting cements to ceramics

Objective: To compare shear bond strength of different luting cements to several porcelain after different porcelain surface treatments. Methods: Three kinds of ceramic specimens (Empress II, GI-II and Cercon) were investigated and each kind of specimen was divided into four groups respectively. The four groups were treated with sand-blasting plus silanation, etching plus silanation , respectively. Then two kinds of luting cements were used to bond the ceramic pieces and the shear bond strengths were measured. Results: The results showed that in Empress group the shear bond strength of specimen treated with etching silanized and Vita bonding was higher than other specimens and in GI-II and zircon group the shear bond strength of specimen treated with sand-blasting and cement was higher than other specimens. Conclusions: It is suggested that surface conditioning using etching plus silanation and Vita bonding can remarkably improve the shear bond strength of Empress II ceramic.