Atsu Saadet Saglam, Kilicarslan Mehmet A, Kucukesmen H Cenker, Aka P Sema
Department of Prosthodontics, Kirikkale University, Faculty of Dental Medicine, Turkey.
J Prosthet Dent. 2006 Jun;95(6):430-6. doi: 10.1016/j.prosdent.2006.03.016.
Surface treatment methods used for resin bonding to conventional silica-based dental ceramics are not reliable for zirconium-oxide ceramics.
The aim of this study was to compare the effects of airborne-particle abrasion, silanization, tribochemical silica coating, and a combination of bonding/silane coupling agent surface treatment methods on the bond strength of zirconium-oxide ceramic to a resin luting agent.
Sixty square-shaped (5 x 5 x 1.5 mm) zirconium-oxide ceramic (Cercon) specimens and composite resin (Z-250) cylinders (3 x 3 mm) were prepared. The ceramic surfaces were airborne-particle abraded with 125-microm aluminum-oxide (Al(2)O(3)) particles and then divided into 6 groups (n = 10) that were subsequently treated as follows: Group C, no treatment (control); Group SIL, silanized with a silane coupling agent (Clearfil Porcelain Bond Activator); Group BSIL, application of the adhesive 10-methacryloyloxydecyl dihydrogen phosphate monomer (MDP)-containing bonding/silane coupling agent mixture (Clearfil Liner Bond 2V/ Porcelain Bond Activator); Group SC, silica coating using 30-microm Al(2)O(3) particles modified by silica (CoJet System); Group SCSIL, silica coating and silanization (CoJet System); and Group SCBSIL, silica coating and application of an MDP-containing bonding/silane coupling agent mixture (Clearfil Liner Bond 2V/Porcelain Bond Activator). The composite resin cylinders were bonded to the treated ceramic surfaces using an adhesive phosphate monomer-containing resin luting agent (Panavia F). After the specimens were stored in distilled water at 37 degrees C for 24 hours, their shear bonding strength was tested using a universal testing machine at a crosshead speed of 0.5 mm/min. Debonded specimen surfaces were examined with a stereomicroscope to assess the mode of failure, and the treated surfaces were observed by scanning electron microscopy. Bond strength data were analyzed using 1-way analysis of variance and the Duncan test (alpha = .05).
The bond strengths (mean +/- SD; MPa) in the groups were as follows: Group C, 15.7 +/- 2.9; Group SIL, 16.5 +/- 3.4; Group BSIL, 18.8 +/- 2.8; Group SC, 21.6 +/- 3.6; Group SCSIL, 21.9 +/- 3.9; and Group SCBSIL, 22.9 +/- 3.1. The bond strength was significantly higher in Group SCBSIL than in Groups C, SIL, and BSIL (P<.001), but did not differ significantly from those in Groups SC and SCSIL. Failure modes were primarily adhesive at the interface between zirconium and the resin luting agent in Groups C and SIL, and primarily mixed and cohesive in Groups SC, SCSIL, and SCBSIL.
Tribochemical silica coating (CoJet System) and the application of an MDP-containing bonding/silane coupling agent mixture increased the shear bond strength between zirconium-oxide ceramic and resin luting agent (Panavia F).
用于树脂与传统二氧化硅基牙科陶瓷粘结的表面处理方法对氧化锆陶瓷不可靠。
本研究的目的是比较空气颗粒研磨、硅烷化、摩擦化学二氧化硅涂层以及粘结/硅烷偶联剂表面处理方法的组合对氧化锆陶瓷与树脂粘结剂粘结强度的影响。
制备60个方形（5×5×1.5mm）氧化锆陶瓷（Cercon）试件和复合树脂（Z-250）圆柱体（3×3mm）。陶瓷表面用125微米的氧化铝（Al₂O₃）颗粒进行空气颗粒研磨，然后分为6组（n = 10），随后进行如下处理：C组，不处理（对照）；SIL组，用硅烷偶联剂（Clearfil Porcelain Bond Activator）进行硅烷化；BSIL组，应用含10-甲基丙烯酰氧基癸基二氢磷酸酯单体（MDP）的粘结/硅烷偶联剂混合物（Clearfil Liner Bond 2V/ Porcelain Bond Activator）；SC组，使用经二氧化硅改性的30微米Al₂O₃颗粒进行二氧化硅涂层（CoJet System）；SCSIL组，二氧化硅涂层和硅烷化（CoJet System）；SCBSIL组，二氧化硅涂层并应用含MDP的粘结/硅烷偶联剂混合物（Clearfil Liner Bond 2V/Porcelain Bond Activator）。使用含磷酸酯单体的粘结性树脂粘结剂（Panavia F）将复合树脂圆柱体粘结到处理过的陶瓷表面。将试件在37℃蒸馏水中储存24小时后，使用万能试验机以0.5mm/min的十字头速度测试其剪切粘结强度。用立体显微镜检查脱粘试件表面以评估失效模式，并用扫描电子显微镜观察处理过的表面。粘结强度数据采用单因素方差分析和邓肯检验进行分析（α = 0.05）。
各组的粘结强度（平均值±标准差；MPa）如下：C组，15.7±2.9；SIL组，16.5±3.4；BSIL组，18.8±2.8；SC组，21.6±3.6；SCSIL组，21.9±3.9；SCBSIL组，22.9±3.1。SCBSIL组的粘结强度显著高于C组、SIL组和BSIL组（P<0.001），但与SC组和SCSIL组无显著差异。失效模式在C组和SIL组中主要是氧化锆与树脂粘结剂界面处的粘结失效，而在SC组、SCSIL组和SCBSIL组中主要是混合失效和内聚失效。
摩擦化学二氧化硅涂层（CoJet System）和应用含MDP的粘结/硅烷偶联剂混合物提高了氧化锆陶瓷与树脂粘结剂（Panavia F）之间的剪切粘结强度。
