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首页> 外文期刊>The Journal of Prosthetic Dentistry >Effects of surface treatments on shear bond strengths between a resin cement and an alumina core.
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Effects of surface treatments on shear bond strengths between a resin cement and an alumina core.

机译：表面处理对树脂水泥和氧化铝核之间的剪切粘结强度的影响。

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STATEMENT OF PROBLEM: Although bonding to all-ceramic restorations is desirable, there is little information on the use of resin cements containing a phosphate monomer, and the importance of different surface treatments on their adhesion to high-strength core materials. PURPOSE: This study attempted to determine the shear bond strength values between Panavia 21 resin cement (Kuraray) and an alumina core material (In-Ceram) after 3 surface treatments and the application of a silane coupling agent. MATERIAL AND METHODS: Forty-five In-Ceram cylindrical rods were fabricated and assigned to 3 groups. Group I specimens were treated with a 9.5% hydrofluoric (HF) acid, group II with a 5% HF acid, and group III were sandblasted. All specimens were coated with a silane coupling agent (Cavex Clearfil Photobond and Activator) before cementation with Panavia 21 to sandblasted nickel-chromium rods. As a control, group IV consisted of 8 porcelain (Vitadur Alpha) rods treated with a 5% HF acid and silane. All specimens were subjected to a load of 1.2 kg during cementation, then stored under water for 36 hours. A jig mounted on a Hounsfield Universal Testing machine was used at a crosshead speed of 0.5 mm/min to test the shear bond strengths. RESULTS: The results were 14.65 +/- 4.64 MPa for group I, 18.03 +/- 6.13 MPa for group II, and 22.35 +/- 5.98 MPa for group III In-Ceram specimens; and 18.05 +/- 8.46 MPa for control (group IV). CONCLUSION: The use of Panavia 21 resin cement and a silane coupling agent can achieve a successful bond between either sandblasted or 5% HF acid-etched In-Ceram core material.
机译：问题陈述：尽管希望与全瓷修复体粘合，但是关于使用含磷酸酯单体的树脂胶粘剂以及不同表面处理对其与高强度芯材的粘合性的重要性的信息很少。目的：本研究试图确定经过3种表面处理和使用硅烷偶联剂后的Panavia 21树脂水泥（可乐丽）与氧化铝芯材料（In-Ceram）之间的剪切粘结强度值。材料与方法：制作了45个In-Ceram圆柱棒，分为3组。 I组标本用9.5％的氢氟酸（HF）处理，II组标本用5％HF酸处理，III组标本进行了喷砂处理。在用Panavia 21固结到喷砂的镍铬棒上之前，所有样品均涂有硅烷偶联剂（Cavex Clearfil Photobond和Activator）。作为对照，IV组由8个用5％HF酸和硅烷处理过的瓷棒（Vitadur Alpha）组成。在固井过程中，所有样本均承受1.2千克的载荷，然后在水下储存36小时。使用安装在Hounsfield Universal Testing机器上的夹具，以0.5 mm / min的十字头速度测试剪切粘结强度。结果：第一组结果为14.65 +/- 4.64 MPa，第二组为18.03 +/- 6.13 MPa，第三组In-Ceram标本为22.35 +/- 5.98 MPa;对照（IV组）为18.05 +/- 8.46 MPa。结论：使用Panavia 21树脂水泥和硅烷偶联剂可以在喷砂或5％HF酸腐蚀的In-Ceram核心材料之间实现成功的粘结。

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