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首页> 外文期刊>Journal of dentistry >Durable bonding to mechanically and/or chemically pre-treated dental zirconia
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Durable bonding to mechanically and/or chemically pre-treated dental zirconia

机译：与机械和/或化学预处理的牙科氧化锆持久结合

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Objectives: To evaluate the effect of mechanical and chemical surface pre-treatment on the bond durability of two composite cements to dental zirconia. Methods: Fully sintered IPS e.max ZirCAD (Ivoclar-Vivadent) blocks were either subjected to tribochemical silica sandblasting (CoJet, 3M ESPE) or not mechanically pre-treated. Next, the zirconia samples were either additionally pre-treated using one of two silane/MDP-combined ceramic primers (Clearfil Ceramic Primer, Kuraray; Monobond Plus, Ivoclar-Vivadent), or not further chemically pre-treated. Finally, two identically pre-treated zirconia blocks were bonded together using either a conventional BisGMA-based (Clearfil Esthetic Cement, Kuraray) or an MDP-based (Panavia F2.0, Kuraray) 'self-etch' dual-cure composite cement. The specimens were trimmed at the interface to a cylindrical hour-glass shape and stored for 7 days in distilled water (37 ??C), after which they were randomly exposed to one of three ageing protocols: (1) immersed in 37 ??C water for 10 days (10 d); (2) subjected to 10,000 thermo-cycles (TC); or (3) immersed in 37 ??C water for 6 months (6 m). After storage, the micro-tensile bond strength (??TBS) was determined in MPa (n = 15-21/group). Fractographic analysis was performed using SEM. Results: Weibull analysis revealed the highest Weibull scale and shape parameters for the 'CoJet/Clearfil Ceramic Primer/Panavia F2.0/10d' combination. While the BisGMA-based composite cement Clearfil Esthetic Cement (Kuraray) bonded equally well to zirconia using either tribochemical silica sandblasting (CoJet, 3M ESPE) or not, sandblasting appeared indispensable for the MDP-based and more hydrophilic composite cement Panavia F2.0 (Kuraray). Conclusions: Combined mechanical and chemical pre-treatment can best be recommended to durably bond to zirconia. Clinical significance: As a standard procedure to durable bond zirconia to tooth tissue, both mechanical (tribochemical silica coating) and chemical (silane/MDP-combined ceramic primers) is clinically highly recommended. ? 2012 Elsevier Ltd. All rights reserved.
机译：目的：评估机械和化学表面预处理对两种复合水泥与牙科氧化锆的粘结耐久性的影响。方法：对完全烧结的IPS e.max ZirCAD（Ivoclar-Vivadent）块进行摩擦化学硅喷砂处理（CoJet，3M ESPE）或不进行机械预处理。接下来，使用两种硅烷/ MDP结合的陶瓷底漆（Clearfil Ceramic Primer，Kuraray; Monobond Plus，Ivoclar-Vivadent）之一对氧化锆样品进行额外的预处理，或者不进行化学预处理。最后，使用常规的BisGMA基（Clearfil Esthetic水泥，Kuraray）或MDP基（Panavia F2.0，Kuraray）“自蚀”双固化复合水泥将两个经过相同预处理的氧化锆砖粘结在一起。将样品在界面处修整成圆柱形沙漏形，并在蒸馏水（37℃）中保存7天，然后将它们随机暴露于以下三种老化方案之一：（1）浸入37℃ C水10天（10 d）; （2）经受10,000个热循环（TC）;或（3）浸入37°C水中6个月（6 m）。储存后，以MPa（n ＝ 15-21 /组）测定微拉伸粘合强度（ΔTBS）。使用SEM进行分形分析。结果：Weibull分析显示“ CoJet / Clearfil陶瓷底漆/ Panavia F2.0 / 10d”组合的最高Weibull比例和形状参数。尽管BisGMA基复合水泥Clearfil美学水泥（Kuraray）是否使用摩擦化学二氧化硅喷砂（CoJet，3M ESPE）与氧化锆均等粘合良好，但喷砂似乎对于MDP基和亲水性更高的复合水泥Panavia F2.0是必不可少的（可乐丽）。结论：最好建议采用机械和化学联合预处理来持久地结合氧化锆。临床意义：作为将氧化锆与牙齿组织持久结合的标准程序，临床上强烈建议同时使用机械（摩擦化学二氧化硅涂层）和化学（硅烷/ MDP组合陶瓷底漆）。 ？ 2012 Elsevier Ltd.保留所有权利。

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