Department of Prosthetic Dentistry, Regensburg University Medical Center, Regensburg, Germany.
J Mech Behav Biomed Mater. 2011 Jan;4(1):2-8. doi: 10.1016/j.jmbbm.2010.08.002. Epub 2010 Aug 27.
This study investigated the shear bond strength (SBS) and the tensile bond strength (TBS) of the zirconia-to-resin interface using different cement bonding concepts.
Coplanar zirconia specimens were bonded to CoCr-cylinders measuring 5 mm in diameter and 3 mm in height. All bonding areas were first sandblasted with 110 μm Al(2)O(3) (0.28 MPa, 10 s). SBS and TBS were determined after 24 h and 90 d of water storage as well as after 12,000 thermal cycles (TC, 5°/55 °C, 17 d). The bonding concepts consisted of the application of a silane coupling agent, tribological silica coating (Rocatec system), cements or primers containing phosphone, mono-phosphate, or di-phosphate, and a combination of silica coating and primer.
Bond strength higher than 10 MPa was considered clinically sufficient. SBS measured with each bonding concept surpassed this value, except control and MaxCem after 90 d. In contrast, TBS values were rather different. The application of a silane coupling agent alone showed very low values in the TBS test. Silica coating was only sufficient after 90 d of water storage and when combined with phosphate-esters or phosphone-containing primers. Bonding agents based on di-phosphates or phosphones showed stable TBS values of less than 10 MPa under different aging conditions. The predominant mode of failure was adhesive failure at the ceramic surface.
None of the investigated bonding concepts of the zirconia-to-resin interface provided clinically sufficient tensile bond strength. SBS values were inadequate for a sufficient ranking.
本研究采用不同的粘结固位理念，研究氧化锆-树脂界面的抗剪粘结强度（SBS）和拉伸粘结强度（TBS）。
共面氧化锆试件与直径 5mm、高 3mm 的 CoCr 圆柱体粘结。所有粘结区域均先用 110μm 的 Al2O3（0.28 MPa，10 s）进行喷砂处理。在 24 h 和 90 d 水储存后以及经过 12000 次热循环（5°C/55°C，17 d）后，分别测定 SBS 和 TBS。粘结固位理念包括应用硅烷偶联剂、摩擦学二氧化硅涂层（Rocatec 系统）、含有膦酸、单磷酸盐或二磷酸盐的粘结剂或底涂剂，以及二氧化硅涂层和底涂剂的组合。
高于 10 MPa 的粘结强度被认为在临床上是足够的。除了 90 d 时的对照组和 MaxCem 之外，每种粘结固位理念测量的 SBS 均超过该值。相比之下，TBS 值则差异较大。单独应用硅烷偶联剂在 TBS 测试中显示出非常低的值。只有在 90 d 水储存后和与磷酸酯或含膦酸的底涂剂结合使用时，二氧化硅涂层才足够。基于二磷酸盐或膦酸的粘结剂在不同老化条件下均表现出稳定的 TBS 值，低于 10 MPa。主要的失效模式是陶瓷表面的黏附性失效。
氧化锆-树脂界面的研究粘结固位理念均未提供足够的临床拉伸粘结强度。SBS 值不足以进行充分的分类。
