1988 Volume 7 Issue 6 Pages 935-951
To improve the heterogeneities of visible light-cured composite resins, acrylate-methacrylate monomers containing an acryloyl and a mathacryloyl group in a monomer were synthesized.Using UDMA as a base monomer, mechanical properties and residual carbon-carbon double bonds of acrylate-methacrylate were compared with those of dimethacrylate and diacrylate.Visible light-cured composite resins with acrylate-methacrylate had stronger mechanical properties than those of corresponding dimethacrylate, whereas unfilled resins cured by visible light had similar mechanical properties.Unfilled resin of triethylene glycol diacrylate(TriEDA)had significantly lower mechanical properties, but TriEDA gave the highest visible light-cured composite resin.The mechanical properties of visible light-cured composite resin with triethylene glycol acrylate methacrylate(TriEAMA)were comparable to those prepared by heat-cure, while the light-cured triethylene glycol dimethacrylate(TriEDMA)-composite resin had weaker mechanical properties than the heat-cured resin.The number of residual carbon-carbon double bonds in TriEAMA-unfilled resin cured by visible light was much smaller than that in TiEDMA.It is concluded that acrylate-methacrylate is useful for visible light-cured dental resins.
