Zhang Shanchuan, Kocjan Andraz, Lehmann Frank, Kosmac Tomaz, Kern Matthias
Department of Prosthodontics, Propaedeutics and Dental Materials, Christian-Albrechts University at Kiel, Kiel, Germany.
Eur J Oral Sci. 2010 Aug;118(4):396-403. doi: 10.1111/j.1600-0722.2010.00752.x.
The purpose of this study was to evaluate the influence of contamination and subsequent cleaning on the bond strength and durability of an adhesive resin to nano-structured alumina-coated zirconia ceramic. Zirconia ceramic disks were coated with nano-structured alumina, utilizing the hydrolysis of aluminum nitride powder. After immersion in saliva or the use of a silicone disclosing agent, specimens were cleaned with phosphoric acid etching or with tap water rinsing only. Uncontaminated specimens served as controls. Plexiglas tubes filled with composite resin were bonded with a phosphate monomer [10-methacryloxydecyl-dihydrogenphosphate (MDP)]-containing resin (Panavia 21). Subgroups of eight specimens each were stored in distilled water at 37 degrees C, either for 3 d without thermal cycling (TC) or for 150 d with 37,500 thermal cycles from 5 to 55 degrees C. The tensile bond strength (TBS) was determined using a universal testing machine at a crosshead speed of 2 mm min(-1). The topography of the debonded surface was scrutinized for fractographic features, utilizing both optical and scanning electron microscopy. The TBS to uncontaminated nano-structured alumina-coated zirconia ceramic was durable, while contamination significantly reduced the TBS. Phosphoric acid cleaning was effective in removal of saliva contamination from the coated bonding surface but was not effective in removal of the silicone disclosing agent. Nano-structured alumina coating improves resin bonding to zirconia ceramic and eliminates the need for air-abrasion before bonding.
本研究的目的是评估污染及后续清洁对一种粘结树脂与纳米结构氧化铝涂层氧化锆陶瓷之间粘结强度和耐久性的影响。利用氮化铝粉末水解法，在氧化锆陶瓷盘上涂覆纳米结构氧化铝。将样本浸入唾液或使用硅酮示踪剂后，分别用磷酸蚀刻或仅用自来水冲洗进行清洁。未受污染的样本作为对照。用含磷酸盐单体[10-甲基丙烯酰氧基癸基二氢磷酸酯（MDP）]的树脂（Panavia 21）粘结填充复合树脂的有机玻璃管。每组八个样本的亚组分别在37℃的蒸馏水中储存，要么不进行热循环（TC）保存3天，要么在5至55℃下进行37500次热循环保存150天。使用万能试验机以2 mm min⁻¹的十字头速度测定拉伸粘结强度（TBS）。利用光学显微镜和扫描电子显微镜检查脱粘表面的形貌，以寻找断口特征。与未受污染的纳米结构氧化铝涂层氧化锆陶瓷之间的TBS具有耐久性，而污染会显著降低TBS。磷酸清洁对于去除涂层粘结表面的唾液污染有效，但对于去除硅酮示踪剂无效。纳米结构氧化铝涂层可改善树脂与氧化锆陶瓷的粘结，且无需在粘结前进行空气喷砂处理。
