Effects of Various Factors on Dentin Bonding of Resin Using Barbituric Acid Initiator Systems

Abstract

As a part of a series of studies examining the role of polymerization initator systems in dentin bonding, the effects of various factors on bonding to dentin were studied in MMA resin initiated by a 1-cyclohexyl-5-ethyl barbituric acid (CEB)/cupric acetylacetonate (CAA)/vinylbenzyltetradecyldimethylammonium chloride (VB14) system. The use of 10% phosphoric acid conditioner containing 2〜3 wt% CuCl₂ and 35 wt% 2-hydroxyethyl methacrylate (HEMA) primer was significantly effective in improving the bond strength. The mean bond strength of 12.8〜14.4 MPa obtained under optimal conditions were comparable to those obtained with MMA-TBB resin.