两种新型通用型处理剂对氧化锆黏结强度的影响

Effects of two new multipurpose treatment agents on the bond strength of zirconia

背景:有研究发现,含有10-甲基丙烯酰氧癸基磷酸酯的表面处理剂可与氧化锆表面氧化物发生化学结合,显著提高氧化锆的黏结性能。目的:分析硅烷偶联剂Monobond N和树脂黏结剂Single Bond Universal Adhesive对氧化锆与复合树脂微拉伸黏结强度的影响。方法:将60块氧化锆块随机分为3组,实验1组直接采用Bis-GMA树脂水门汀黏结氧化锆与复合树脂;实验2组采用Monobond N处理氧化锆表面,然后采用Bis-GMA树脂水门汀黏结氧化锆与复合树脂;实验3组采用Single Bond Universal Adhesive(含10-甲基丙烯酰氧癸基磷酸酯)处理剂处理氧化锆表面,然后采用Bis-GMA树脂水门汀黏结氧化锆与复合树脂。对比3组微拉伸黏结强度及黏结界面微观结构。结果与结论:1微拉伸黏结强度:实验2组、实验3组高于实验1组(P<0.05),前两组间比较差异无显著性意义。2扫描电镜观察黏结界面:微拉伸实验前,实验1组黏结面可见较多裂隙,实验2组黏结界面较为均匀,裂隙较少;实验3组黏结界面平整连续,裂隙少见。微拉伸实验后,3组黏结破坏以内聚破坏和黏结界面破坏混合为主,但实验2组、实验3组未见单纯黏结界面破坏。3结果表明,Monobond N和Single Bond Universal Adhesive处理剂可提高氧化锆与复合树脂的黏结强度。

BACKGROUND： BACKGROUND： Studies have found that surface treatment agents containing 10-methacryloyloxy decyl dihydrogen phosphate may be chemically bonded to the oxide on the surface of zirconia, thereby notably improving the bonding performance of zirconia. OBJECTIVE： To study the effects of Mondbond N and Single bond Universal Adhesive on microtensile bond strength between zirconia and composite resin. METHODS： Sixty pieces of zirconia were randomized into three groups： in group 1, conventional Bis-GMA resin cement was used to bond zironia and composite resin; in group 2, conventional Bis-GMA resin cement was used to bond zironia and composite resin following Mondbond N treatment; in group 3, conventional Bis-GMA resin cement was used to bond zironia and composite resin following surface treatment with Single Bond Universal Adhesive containing 10-methacryloyloxy decyl dihydrogen phosphate. Microtensile bond strength and microstructure on the bonding interface were compared among three groups. RESULTS AND CONCLUSION：（1） Microtensile bond strength was significantly higher in the groups 2, 3 than group 1（P〈0.05）, and there was no difference between the two former groups.（2） Scanning electron microscope observation of the bonding interface： before microtensile test, there were more fissures on the bonding interface of group 1; in the group 2, there were a few fissures on the bonding interface that was relatively even; in the group 3, the bonding interface was smooth and continuous with few fissures. After microtensile, cohesive failure and bonding interface failure were mainly seen in the three groups, but there was no simple interface failure in the groups 2 and 3. These findings indicate that Monobond N and Single Bond Universal Adhesive can both improve the bonding strength of zirconia with composite resin.