Color stable dental restorative materials

Abstract

In a polymerizable dental restorative resin composition useful as a dental composite resin and/or a denture/denture base material comprising at least one binder resin, a diluent monomer, at least one filler, optionally, a photopolymerization system comprising an initiator for initiating polymerization of the composite resin upon exposure to visible light and an accelerator, and an initiator for initiating polymerization of the composite resin upon application of heat, the improvement imparting shelf stability and substantially eliminating discoloration is provided comprising the initiator for initiating polymerization upon application of heat having the general formula: R--N.dbd.N--R' wherein R and R' can be the same or different, and are selected from the group consisting of oxygen-free aliphatic, cycloaliphatic, aromatic, and heterocyclic moieties.

Dependencies are inferred from the claim text.