Monomer composition and bond strength of light-cured 4-META opaque resin.
A light-cured opaque resin was prepared with 4-(2-methacryloxyethoxycarbonyl) phthalic anhydride (4-META), bifunctional methacrylates, and titanium dioxide (TiO2). The relation between monomer composition and bond strength was examined with seven methacrylate monomers. Methyl methacrylate (MMA) was useful as a solvent of 4-META. However, it was not sufficiently cured by photo-initiator. The bond strength of a triethyleneglycol dimethacrylate (TEGDMA)-based composition was superior to other monomer-based compositions after repeated thermocycles. 1,6-bis(methacryloxy-2-ethoxycarbonyl-amino)-2,4,4-trimethylhex ane (UDMA) effectively provided viscosity to the composition. The prepared opaque resin consisted of 4-META/MMA-TEGDMA primer, TEGDMA-UDMA-based monomer, and titanium dioxide. This opaque resin bonded strongly to alumina-blasted cobalt-chromium alloy. The light-cured 4-META opaque resin may be useful for bonding prosthodontic composite to metal frameworks.
Yoshida
K
K
Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, Japan.
Matsumura
H
H
Atsuta
M
M
D000180:Acrylic Resins / Q000032:analysis*; D002858:Chromium Alloys; D001840:Dental Bonding; D003738:Dental Cements; D003799:Dental Stress Analysis; D006358:Hot Temperature; D013329:Structure-Activity Relationship
D000180:Acrylic Resins; D002858:Chromium Alloys; D003738:Dental Cements; C031172:4-META resin