不同表面处理方法对玻璃渗透陶瓷与牙本质粘接强度的影响

观察喷砂，酸蚀及硅烷偶联剂等表面处理方法对玻璃渗透陶瓷与牙本质粘接强度的影响。将24个陶瓷试件分为4组，分别用上述3种方法进行表面处理，未处理组为对照组，用Super-Bond与牙本质粘接，测其剪切强度，结果显示，喷砂硅烷处理组的粘接强度明显高于其他3组（P＜0．01），酸蚀硅烷处理组与单纯硅烷处理组的粘接强度之间差异无显著性意义（P＞0．05），对照组的粘接强度显著低于处理组（P＜0．01），研究表明，玻璃渗透陶瓷可以用喷砂和硅烷联合进行表面以获得满意的粘接强度。

EFFECT OF DIFFERENT SURFACE CONDITIONING METHODS ON SHEAR BONDING STRENGTH OF GLASS-INFIL-TRATED CERAMIC I TO DENTINE

To investigate the effects of different surface conditioning methods on the shear bonding strength of glass-infiltrated ceramic to dentine, 24 glass-infiltrated ceramic testing-pieces were divided into four groups randomly. Among them 3 groups were treated with A(sandblasting+silance), B(etching+silace) or C(silance), separately, while group D was set as the control. Bonding the ceramic pieces to dentine with Super-Bond and the shear bonding strengths was measured. The results showed that the shear bonding strength of group D was lower than that of group A, B and C (P<0.01).Strength of group A was higher than that of group B ,C and D(P<0.01),while there was no significant difference between groups B and C(P>0.05). It is suggested that surface conditioning using combined sandblasting with silance can remarkbly improve the shear bonding strength of glass-infiltrated ceramic to dentine.