title: Effect of adding ethylene glycol dimethacrylate to resin cements: durability against thermal stress of adhesion to titanium.
abstract: The present study was conducted to examine the effect of the addition of a dimethacrylate to resin cements on bond strength between titanium and resin after thermocycling. Titanium disks, polished and treated with a phosphate monomer, were bonded to acrylic rods using two types of experimental resin cements. The cements were composed of methyl methacrylate (MMA) containing a tributylborane initiator and 0-10 wt% of ethylene glycol dimethacrylate (EGDMA) and two types of polymer component of hard poly (MMA) or soft fluoropolymer (2-6F). The bonded specimens were subjected to a thermocycling test in water and then to tensile strength testing. The addition of 5% or more dimethacrylate monomer to the two MMA-based resin cements caused a drastic decrease in bond strength to the metal after the thermocycling test. The resin prepared with soft 2-6F as a polymer component was significantly more durable than the rigid type resin based on PMMA. However, even a 1% addition of ECDMA to the 2-6F resin resulted in a significant decrease in durability.
authors.affiliation: Institute for Medical and Dental Engineering, Tokyo Medical and Dental University, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Imai
authors.forename: Y
authors.initials: Y
authors.lastname: Ikeda
mesh_terms: D000704:Analysis of Variance; D003432:Cross-Linking Reagents / Q000737:chemistry*; D001840:Dental Bonding; D004548:Elasticity; D006358:Hot Temperature; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry*; D008768:Methylmethacrylates / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D013718:Tensile Strength; D014025:Titanium
chemical_list: C111561:2-6F resin; D003432:Cross-Linking Reagents; D006845:Hydrocarbons, Fluorinated; D008689:Methacrylates; D008768:Methylmethacrylates; D011109:Polymethacrylic Acids; D019279:Resin Cements; C107571:poly(ethyleneglycol dimethacrylate-2-hydroxyethylmethacrylate); C004919:ethylene dimethacrylate; D014025:Titanium