Abstract
The static bending test of crown and bridge resin facing metal frame was carried out under a scanning electron microscope, and the relationship between the bending properties and a combination of surface treatments of metal and adhsive or bonding system was studied.The resin facing metal frames constructed by a combination of Sn galvanizing-Panavia and that of oxidation-Bondingliner had a static breaking stress of about 65kgf/mm2.All of these specimens were destroyed between the metal frame and the resin.The specimen, when constructed by the Sebond system, had a stress of about 80kgf/mm2 and were destroyed by cracking the resin.Then the resin facing metal frames treated with 250μm Al2O3 sand, when constructed with Silicoater MD, had a stress of about 80kgf/mm2, and were also destroyed by cracking the resin.
