Barkmeier W W, Latta M A
Creighton University, School of Dentistry, 2500 California Street, Omaha, Nebraska 68178, USA.
Quintessence Int. 2000 Nov-Dec;31(10):749-52.
The purpose of this laboratory study was to determine the bond strength of a base metal alloy to a high-noble alloy and amalgam when a new chemical adhesion promoter was used in conjunction with a resin cement.
Specimens of high-noble alloy and amalgam were prepared in epoxy-filled rings. Base metal cylinders were cast. The ends of the cylinders and the metal bonding substrates were wet ground and air abraded with aluminum oxide. The base metal cylinders were cemented with Panavia 21 resin cement after application of 1 of the following to the high-noble and amalgam metal surfaces: (1) Alloy Primer, (2) ED Primer, (3) Alloy Primer and ED Primer, or (4) tin plating. Bond values were determined after 24 hours' storage and after 3 months' storage and thermocycling.
At both 24 hours and 3 months, tin plating yielded the highest bond strengths to a high-noble alloy, but the value for the Alloy Primer groups was not significantly lower. There was no statistically significant difference between the 24-hour and 3-month values within the 4 treatment regimens.
Treatment of amalgam or high-noble alloy with either tin plating or Alloy Primer before bonding with Panavia 21 resin cement yielded equivalent bond strengths to a base metal alloy. ED Primer was not an effective metal primer. There was no advantage to combining Alloy Primer and ED Primer.
本实验室研究的目的是确定当一种新型化学黏附促进剂与树脂水门汀联合使用时，贱金属合金与高贵金属合金及汞合金之间的粘结强度。
在环氧树脂填充环中制备高贵金属合金和汞合金标本。铸造贱金属圆柱体。圆柱体的末端和金属粘结基底进行湿磨并用氧化铝进行空气喷砂处理。在高贵金属和汞合金金属表面施加以下一种处理后，用Panavia 21树脂水门汀粘结贱金属圆柱体：（1）合金底漆，（2）ED底漆，（3）合金底漆和ED底漆，或（4）镀锡。在储存24小时后、储存3个月后以及热循环后测定粘结值。
在24小时和3个月时，镀锡对高贵金属合金产生的粘结强度最高，但合金底漆组的值并不显著更低。在4种处理方案中，24小时和3个月的值之间没有统计学上的显著差异。
在与Panavia 21树脂水门汀粘结之前，用镀锡或合金底漆处理汞合金或高贵金属合金，对贱金属合金产生的粘结强度相当。ED底漆不是一种有效的金属底漆。联合使用合金底漆和ED底漆没有优势。
