Katsumata Yuki, Hojo Satoru, Hamano Naho, Watanabe Tomonaga, Yamaguchi Hiroaki, Okada Shusaku, Teranaka Toshio, Ino Satoshi
Division of Prosthetics, Department of Oral and Maxillofacial Rehabilitation, Kanagawa Dental College.
Dent Mater J. 2009 Jul;28(4):409-18. doi: 10.4012/dmj.28.409.
This study aimed to investigate the shear bond strength of an autopolymerizing resin to a nylon denture base polymer (Lucitone FRS: LT) subjected to different surface treatments, and the results thereof compared with a heat-polymerizing resin and a polycarbonate polymer. Specimens were divided into five groups according to the surface treatment method: polishing (#600), sandblasting, adhesive primer application (resin primer), sandblasting + adhesive primer application, and tribochemical coating (Rocatec system). Following which, specimens were subjected to a shear bond strength test and Si concentrations were measured using an electron probe microanalyzer (EPMA). On shear bond strength, that of LT with tribochemical coating was significantly higher than the other groups. On EPMA results, the surface of LT with tribochemical coating was found to be covered with a silica film. Therefore, findings in this study indicated that silica-coating by Rocatec system was effective in improving the bond strength of nylon denture base polymer to autopolymerizing repair resin.
本研究旨在调查自凝树脂与经过不同表面处理的尼龙义齿基托聚合物（Lucitone FRS：LT）之间的剪切粘结强度，并将其结果与热凝树脂和聚碳酸酯聚合物进行比较。根据表面处理方法将样本分为五组：抛光（#600）、喷砂、涂覆粘结剂底漆（树脂底漆）、喷砂+涂覆粘结剂底漆以及摩擦化学涂层（Rocatec系统）。随后，对样本进行剪切粘结强度测试，并使用电子探针微分析仪（EPMA）测量硅浓度。在剪切粘结强度方面，采用摩擦化学涂层的LT的粘结强度显著高于其他组。根据EPMA结果，发现采用摩擦化学涂层的LT表面覆盖有一层二氧化硅膜。因此，本研究结果表明，通过Rocatec系统进行二氧化硅涂层可有效提高尼龙义齿基托聚合物与自凝修复树脂之间的粘结强度。
