4-META Opaque Resin — A New Resin Strongly Adhesive to Nickel-Chromium Alloy

Abstract

Opaque resins lacking adhesion and mechanical retention devices are required in positioning crowns; the average bond strength in such cases is 60-70 kg/cm2. An adhesive opaque resin containing 4-methacryloxyethyl trimellitate anhydride was prepared for use with acrylic veneer crowns, and its bond strength and durability of adhesion with an alloy were studied. Its bonding strength between cured resin and dental nickel-chromium alloy etched with HCl and oxidized with HNO₃ was an average 250 kg/cm² after immersion in water at 37°C for 30 wk.