接着強度の高い光重合型オペークレジンに関する研究

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  • A light-cured opaque resin with high bond strength.

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Light-cured adhesive opaque resins with high bond strength were prepared with the use of 4-methacryloxyethyl trimellitate anhydride (4-META), eleven methacrylate monomers and composite pigment. The purpose of this study was to investigate the relation between the monomer composition and the bond strength of the opaque resin. The shear bond strengths of ethyleneglycol dimethacrylate (1 G), diethyleneglycol dimethacrylate (2 G) and triethyleneglycol dimethacrylate (3 G)-based opaque resins were superior to those of other monomerbased opaque resins after thermocycles. A methyl methacrylate (MMA)-based opaque resin showed poor bond ability. 1, 6-bis (methacryloxy-2-ethoxycarbonylamino)-2, 4, 4-trimethylhexane (UDMA) effectively provided viscosity to the compositions. The prepared opaque resin, which consisted of 4-META/MMA-3 G primer, 3 G-UDMA base monomer and titanium dioxide-polymethacrylate composite pigment, bonded strongly to the alumina-blasted cobaltchomium alloy. This opaque resin may be useful to bond fixed prosthodontic composite and metal frameworks.

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