Adhesive Polyurethane Liners for Anterior Restorations

Abstract
Polyurethane-type compositions were developed as adhesive liners for poly(methyl methacrylate) restorations. Several polyglycol-diisocyanate mixtures had excellent adhesion to human dentin when applied to moist teeth in vitro. Conventional acrylic restorations became durably bonded when applied on top of these urethane liners within 15 to 30 minutes.

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