Novel aromatic dimethacrylate esters as dental resins

The preparation of a novel class of dimethacrylate esters, by the reaction of glycidyl methacrylate with various phthalic acid isomers and their halogen substituted derivatives is described. These monomers exhibited low viscosity, possessed similar physical and mechanical properties to bis GMA, and the presence of halogen introduced X-ray opacity into the polymer giving opacity similar to tooth enamel.