PMID: 2491169Jul 1, 1989Paper

Studies on the pre-treatment of dental alloy for adhesive restorations. 4. Adhesive durability of adhesive resin to various dental alloys treated with composite plating

Shika zairyō, kikai = Journal of the Japanese Society for Dental Materials and Devices
Y KondoJ I Yamauchi

Abstract

In this study, the durability of adhesion between an adhesive resin (Panavia EX) and dental alloys (gold or Ni-Cr) were examined in regard to thermal cycling, immersion, either in water (70 degrees C or 100 degrees C) or in sodium chloride solutions (pH was 3, 7 and 9). An favourable adhesive strength, such as 450-500 kgf/cm2, was obtained even after 24 hours immersion in 37 degrees C water, when the surface pre-treatment of the alloy was done with either Sn- or composite (TMSAC/Sn or PVC/Sn)-plating. However, during the durability test, the adhesive strength has decreased to such on extent, that about 60% of early strength with Sn-plating and 80% with TMSAC/Sn composite plating. But, with PVC/Sn composite-plating, more than 90% of the early strength was maintained. In regard to the pH of the corrosive solution, no apparent difference was observed regarding the above mentioned adhesive characteristics.

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