Kern M, Wegner S M
Department of Prosthodontics, School of Dentistry, Albert-Ludwigs University, Freiburg, Germany.
Dent Mater. 1998 Jan;14(1):64-71. doi: 10.1016/s0109-5641(98)00011-6.
Resin bonding to yttrium-oxide--partially-stabilized zirconia ceramic (YPSZ) cannot be established by standard methods that are utilized for conventional silica-based dental ceramics. It was our hypothesis that adhesive bonding methods suitable for glass-infiltrated alumina ceramic can also be used to bond successfully to YPSZ. To prove this hypothesis, bonding methods suitable for alumina ceramic were used on YPSZ and the tensile bond strength and their durability evaluated in vitro.
Plexiglass tubes filled with resin composite were bonded to YPSZ discs following various adhesion protocols. Groups of 16 samples were bonded using seven different bonding methods. Subgroups of eight bonded samples were tested for tensile strength following storage in distilled water (37 degrees C) for either 3 or 150 days. In addition, the 150 day samples were thermal cycled 37,500 times as a method to stress the bond interface. The statistical analysis was made with the Kruskal-Wallis test followed by multiple pair-wise comparisons of the groups using the Wilcoxon rank sum test.
Sandblasting alone, the additional use of a silane or acrylizing resulted in an initial bond of a conventional BisGMA resin composite to YPSZ which failed spontaneously over storage time. The use of the BisGMA resin composite after tribochemical silica coating of YPSZ and the use of a polyacid-modified resin composite after sandblasting of YPSZ resulted in an initial bond which decreased significantly over storage time (p = 0.05). A durable resin bond to YPSZ was achieved only after sandblasting the ceramic and using one of two resin composites containing a special phosphate monomer.
A durable bond to YPSZ was achieved only by using resin composites with a special adhesive monomer. Therefore, the hypothesis of the study was partially proved as a durable bond to alumina ceramic is achieved with the same resin composites. However, it was partially disproved as tribochemical silica coating of YPSZ did not result in a durable resin bond as it does on glass-infiltrated alumina ceramic.
用于传统二氧化硅基牙科陶瓷的标准方法无法实现树脂与钇氧化物部分稳定氧化锆陶瓷（YPSZ）的结合。我们的假设是，适用于玻璃渗透氧化铝陶瓷的粘结方法也可成功用于YPSZ的粘结。为证明这一假设，将适用于氧化铝陶瓷的粘结方法应用于YPSZ，并在体外评估其拉伸粘结强度及其耐久性。
按照不同的粘结方案，将填充有树脂复合材料的有机玻璃管粘结到YPSZ圆盘上。使用七种不同的粘结方法粘结16个样本组。将八个粘结样本的亚组在37℃蒸馏水中储存3天或150天后测试其拉伸强度。此外，对150天的样本进行37500次热循环，以此对粘结界面施加应力。采用Kruskal-Wallis检验进行统计分析，随后使用Wilcoxon秩和检验对各组进行多组两两比较。
单独喷砂、额外使用硅烷或丙烯酸化处理会使传统双酚A缩水甘油醚（BisGMA）树脂复合材料与YPSZ形成初始粘结，但在储存过程中会自发失效。在YPSZ进行摩擦化学硅涂层处理后使用BisGMA树脂复合材料，以及在YPSZ喷砂后使用多元酸改性树脂复合材料，会形成初始粘结，但在储存过程中粘结力显著下降（p = 0.05）。只有在对陶瓷进行喷砂处理并使用两种含有特殊磷酸盐单体的树脂复合材料之一后，才能实现与YPSZ的持久树脂粘结。
只有使用含有特殊粘结单体的树脂复合材料才能实现与YPSZ的持久粘结。因此，该研究的假设部分得到证实，因为使用相同的树脂复合材料可实现与氧化铝陶瓷的持久粘结。然而，该假设也部分被证伪，因为YPSZ的摩擦化学硅涂层处理并未像在玻璃渗透氧化铝陶瓷上那样形成持久的树脂粘结。
