不同功能成分底涂剂对氧化锆耐久粘接强度的影响

Effect of various primers on the long-term bond strength to zirconia

摘要

目的 比较含10-甲基丙烯酰氧癸基磷酸酯（10-metracryloyloxdecyl dyhidrogen phosphate，10-MDP）和硅烷的混合型底涂剂与MDP单一功能成分型底涂剂对氧化锆初期及耐久粘接强度的影响。方法 制作氧化锆标准试件84个，随机分成4组（n = 21），分别使用含10-MDP的Z-Prime Plus（ZP）、含硅烷偶联剂的Monobond-S（MS）、含MDP和硅烷偶联剂的混合型底涂剂Clearfil Ceramic Primer（CCP）、及不使用底涂剂（空白）处理试件表面，再用不含MDP的Duo-Link（DUO）树脂水门汀与氧化锆粘接，形成ZP、MS、CCP及空白对照组共4组粘接试件。每组粘接试件再随机分为3个亚组（n = 7），分别进行3个时间点的老化实验，包括37 ℃恒温水浴24 h、30 d、30 d加3 000个5 ~ 55 ℃冷热循环（30 d/TC）。用计算机控制万能材料实验机测定剪切粘接强度值，扫描电镜（scanning electron microscope，SEM）观察并分析断裂试样的粘接界面破坏模式，2-way ANOVA进行统计分析。结果 ZP、MS、CCP三组在3个时间点获得的粘接强度值均显著高于空白对照（P<0.01）；从24 h到30 d，三组粘接强度值均显著增高（P<0.05）；从30 d到30 d/TC，三组粘接强度值均显著下降（P<0.01），并降至基线（24 h）以下水平（30 d/TC vs. 24 h，P<0.01）。混合型底涂剂CCP在所有时间点的粘接强度值均高于单一功能成分型底涂剂ZP、MS（P<0.01）。在单一功能成分底涂剂中，ZP在30 d时的粘接强度高于MS（P = 0.029），在30 d/TC时却低于MS（P = 0.037）。从30 d到30 d/TC，ZP的粘接强度衰减百分率明显高于MS（82.43% vs. 64.90%）。结论 含MDP和硅烷的混合型底涂剂与氧化锆陶瓷的粘接强度优于单一功能成分型底涂剂。

Abstract

Objective To compare the effects of 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP)- and silane-based primers with those of MDP-based primers on zirconia-resin bonding via multiple levels of aging. Methods Zirconia blocks were divided into 4 groups (n = 21) according to the primer used: MDP-based Z-Prime Plus (ZP), silane-based Monobond-S (MS), MDP- and silane-based Clearfil Ceramic Primer (CCP) and no primer (Blank). After pretreatment with or without the primers followed by bonding with cement Duo-Link, each group was subdivided into 3 subgroups (n = 7) according to aging level: 24 hours of water storage at 37 ℃ (24 h), 30 days of water storage at 37 ℃(30 d), and 30 d plus 3 000 thermal cycles (30 d/TC). After aging, shear bond strength (SBS) tests and failure mode analyses were conducted. Results ZP, MS and CCP groups had greater SBSs than did the BLANK group (P<0.01). From 24 h to 30 d, the shear bond strength significantly increased (P<0.05); however, the shear bond strength decreased significantly from 30 d to 30 d/TC (P<0.01) and fell below baseline (30 d/TC vs. 24 h, P<0.01). Within the primer groups, CCP exhibited a higher SBS than ZP and MS at each aging level (P<0.001). The bonding strength of ZP was greater than that of MS at 30 d (P = 0.029) but lower than that of MS at 30 d/TC (P = 0.037). From 30 d to 30 d/TC, the percent decrease in the bonding strength of ZP was significantly greater than that of MS (82.43% vs. 64.90%). Conclusion MDP-based primers function better for zirconia-resin bonding when they contain silane coupling agents.

关键词

氧化锆 / 陶瓷 / 粘接 / 底涂剂 / Z-Prime plus / Clearfil Ceramic Primer / 冷热循环老化

Key words

zirconia / ceramics / bonding / primer / Z-Prime plus / Clearfil Ceramic Primer / cold and heat cycle aging

Author summay

赵莉，主治医师，硕士，Email：[e-mail]