Dixon D L, Breeding L C, Hughie M L, Brown J S
Department of Restorative Dentistry, University of Alabama, School of Dentistry, Birmingham.
J Prosthet Dent. 1994 Nov;72(5):457-61. doi: 10.1016/0022-3913(94)90114-7.
Researchers are investigating the use of noble metals for the fabrication of resin-bonded prostheses because of concerns about health hazards of nickel and beryllium in base metal alloys. Tin-plating has been advocated to improve the bond of resin luting agents to noble metal alloys. Some manufacturers have suggested that tin-plating is unnecessary to bond noble metal alloys to etched enamel with their products. In this study, Rexillium base metal and Olympia noble metal alloy specimens were bonded to extracted human teeth with the use of two resin luting agents (F21 and Panavia OP). One third of the noble metal specimens were tin-plated, one third were oxidized, and one third were oxidized and sandblasted. Each of the bonded specimens were thermocycled and subjected to a shear force until bond failure. The base metal specimens bonded with Panavia OP luting agent exhibited the greatest mean shear bond strengths. The tin-plating surface treatment significantly increased the mean shear bond strengths of Olympia noble metal specimens.
由于担心贱金属合金中镍和铍对健康的危害，研究人员正在研究使用贵金属制造树脂粘结假体。有人主张镀锡以改善树脂粘结剂与贵金属合金的粘结。一些制造商认为，使用他们的产品将贵金属合金粘结到蚀刻牙釉质上时无需镀锡。在本研究中，使用两种树脂粘结剂（F21和Panavia OP）将Rexillium贱金属和Olympia贵金属合金标本粘结到拔除的人牙上。三分之一的贵金属标本进行镀锡处理，三分之一进行氧化处理，三分之一进行氧化和喷砂处理。对每个粘结标本进行热循环处理，并施加剪切力直至粘结失败。用Panavia OP粘结剂粘结的贱金属标本表现出最大的平均剪切粘结强度。镀锡表面处理显著提高了Olympia贵金属标本的平均剪切粘结强度。
