The effect of momentary pretreatment by 35% HEMA solution on the adaptation between dentin and resin material was investigated by measuring wall-to-wall polymerization contraction in a cylindrical dentin cavity. Five marketed bonding agents tested in this study exhibited improved marginal seal when the dentin cavity wall was pretreated by 35% HEMA for a few seconds with the exception of Pyrofi1 Light Bond. It is concluded that the dentin cavity wall should be treated by HEMA prior to the application of a marketed bonding agent.
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Itoh et al. (1987) studied this question.
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