全酸通用粘结剂和酸蚀-硅烷化处理改善氧化锆树脂粘结效果的比较：哪一种更好？
Comparison of resin bonding improvements to zirconia between one-bottle universal adhesives and tribochemical silica coating, which is better?
机构信息
Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
Jiangsu Key Laboratory of Oral Diseases, Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
出版信息
Dent Mater. 2016 Mar;32(3):403-11. doi: 10.1016/j.dental.2015.12.014. Epub 2016 Jan 2.
OBJECTIVES
To evaluate the bonding of resin-cement to yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) via silica coating followed by silanization, and three one-bottle universal adhesives, with or without prior conditioning using a zirconia primer.
METHODS
Y-TZP specimens (n=160) were conditioned by tribochemical silica coating and silanization (CS), or alumina sandblasting with one of the following MDP containing adhesives or primers: Z-Prime Plus™ (zirconia primer, ZP), Single Bond Universal™ (SU), Clearfil Universal Bond™ (CU) or All-Bond Universal™ (AU). Additionally, some specimens (ZPSU, ZPCU and ZPAU) received Z-Prime Plus™ followed by one of the three adhesives. After 24h water storage and "aging" (20,000 thermocycles plus additional 40-day water storage), shear bond strength (SBS) was measured. Fourier-transform infrared spectroscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS) were employed for characterization of the chemical bonds between the primer/adhesives and the zirconia. Thermodynamic calculations were used to examine the hydrolytic stability between the MDP-zirconia chemical bonds and the SiO2-silane chemical bonds.
RESULTS
The CS and ZPCU groups showed higher SBS than the other six groups. There were no significant pairwise differences amongst ZP, SU and ZPSU, or amongst ZP, AU and ZPAU. Aging led to significantly decreased SBS for all groups except CS and ZPCU. There was no statistically significant interaction between surface treatment and aging. XPS determined the chemical bonds between MDP and zirconia. FTIR showed similar shifts in characteristic phosphate peaks for all the primer and/or adhesive groups. Result of thermodynamic calculation showed that equilibrium constant of SiO2-silane system is much larger than the one of MDP-tetragonal phase zirconia system.
SIGNIFICANCE
The application of one-bottle universal adhesives after alumina sandblasting is an alternative to tribochemical silica coating with silanization for bonding to zirconia, while bonding between resin and Y-TZP is more susceptible to hydrolysis when zirconia primer or one-bottle universal adhesive is used.
目的
评估通过二氧化硅涂层和硅烷化处理对氧化钇稳定四方氧化锆多晶（Y-TZP）进行预处理，以及三种单瓶通用粘结剂在使用氧化锆底涂剂预处理前后与 Y-TZP 的粘结性能。
方法
用二氧化硅涂层和硅烷化处理（CS）或氧化铝喷砂对 Y-TZP 试件（n=160）进行预处理，使用以下含 MDP 的粘结剂或底涂剂中的一种进行预处理：Z-Prime Plus™（氧化锆底涂剂，ZP）、Single Bond Universal™（SU）、Clearfil Universal Bond™（CU）或 All-Bond Universal™（AU）。此外，一些试件（ZPSU、ZPCU 和 ZPAU）先用 Z-Prime Plus™预处理，再用其中一种粘结剂处理。水储存 24h 后“老化”（20,000 次热循环外加额外 40 天水储存），测量剪切粘结强度（SBS）。采用傅里叶变换红外光谱（FTIR）和 X 射线光电子能谱（XPS）对底涂剂/粘结剂与氧化锆之间的化学键进行了表征。采用热力学计算研究了 MDP-氧化锆化学键与 SiO2-硅烷化学键之间的水解稳定性。
结果
CS 和 ZPCU 组的 SBS 高于其他 6 组。ZP、SU 和 ZPSU 之间，ZP、AU 和 ZPAU 之间没有显著的两两差异。除 CS 和 ZPCU 组外，所有组的老化后 SBS 均显著降低。表面处理和老化之间没有统计学意义上的交互作用。XPS 确定了 MDP 和氧化锆之间的化学键。FTIR 显示所有底涂剂和/或粘结剂组的特征磷酸盐峰都有相似的移动。热力学计算结果表明，SiO2-硅烷体系的平衡常数远大于 MDP-四方相氧化锆体系的平衡常数。
意义
氧化铝喷砂后使用单瓶通用粘结剂是二氧化硅涂层和硅烷化处理的替代方法，可用于氧化锆的粘结，但使用氧化锆底涂剂或单瓶通用粘结剂时，树脂与 Y-TZP 之间的粘结更容易发生水解。
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