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The purpose of the present study was to reinforce the strength of the bonding between dental precious metal alloys and adhesive heat-curing type resin.Three kinds of precious metal alloys were treated with three kinds of surface treatment methods, high temperature oxidation with pickling by acid solution and SnO electro-plating method, high temperature oxidation with pickling by acid solution, and only SnO electro-plating method. Adhesive heat-curing type resin containing 4-META was cured on the treated alloy surfaces. The adhesiveness was evaluated by a shear bonding strength test and a pigment percolation test after thermal cycling.The results were as follows:1. The porous structure on the alloy surface formed internal oxidation particles after pickling effectively reinforced the mechanical retention between alloys and resin.2. The SnO electro-plating effectively increased the chemical adhesion between alloys and resin.3. The method with internal oxidation and subsequent SnO electro-plating superiorly increased the durability and adhesiveness of alloys and resin.

nihon hotetsu shika gakkai zasshi

Reinforcement of Adhesion between Precious Metal Alloys and Adhesive Heat-curing Type Resin Containing 4-META. Applying of Internal Oxidation Particles and SnO Electro-plating.