Rosen M, Cohen J, Becker P J
Division of Oral Health Auxiliary Training, University of the Witwatersrand, Johannesburg.
J Dent Assoc S Afr. 1994 Aug;49(8):393-6.
The shear and tensile bond strengths of two resin cements to a high gold alloy with differently prepared surfaces were compared. Eighty buttons were cast from Argident Yellow 1 (gold 83.5 per cent). The surfaces of 40 buttons were sandblasted and the rest were silicoated. Forty cylinders each of F21 and Panavia EX were bonded to the prepared gold alloy surfaces and the specimens stored in distilled water for 24 hours. Half the specimens were then tested to failure using a shear test and the other half using a tensile test. The two cements achieved significantly higher shear and tensile bond strengths to the silicoated metal surfaces. Both cements attained similar shear bond strengths, but F21 achieved significantly stronger tensile bonds than Panavia EX to the differently treated metal surfaces. It is concluded that silicoating of high gold alloys is preferable to sandblasting for resin retention, and that bond strength data from different test methods are not comparable.
比较了两种树脂水门汀与表面处理不同的高金合金之间的剪切粘结强度和拉伸粘结强度。用Argident Yellow 1（83.5%的金）铸造了80个纽扣状试件。40个纽扣状试件的表面进行喷砂处理，其余的进行硅烷化处理。将F21和Panavia EX各40个圆柱体粘结到制备好的金合金表面，试件在蒸馏水中储存24小时。然后，一半试件采用剪切试验测试至破坏，另一半采用拉伸试验测试。两种水门汀与硅烷化处理的金属表面之间的剪切粘结强度和拉伸粘结强度均显著更高。两种水门汀的剪切粘结强度相似，但在不同处理的金属表面上，F21的拉伸粘结强度比Panavia EX显著更强。得出结论，对于树脂固位，高金合金的硅烷化处理优于喷砂处理，并且来自不同测试方法的粘结强度数据不可比。
