ADHESIVE BONDING OF TITANIUM WITH A METHACRYLATE-PHOSPHATE PRIMER ANDSELF-CURING ADHESIVE RESINS

The adhesive bonding of titanium was evaluated with the use of a medal primer and three types of self-curing luting agent. The primer contai ned 10-methacryloyloxydecyl dihydrogen phosphate (MDP). One luting age nt was a composite material that contained the MDP monomer in its liqu id part. The other luting agent was based on methyl methacrylate (MMA) , initiated with tri-n-butylborane derivative (TBB), and contained 4-m ethacryloyloxyethyl trimellitate anhydride (4-META). The MMA-TBB resin without 4-META was used for the control. Pure titanium metal specimen s were bonded with various combinations. Shear bond strengths were det ermined after repeated thermocycles in water. Both MDP and 4-META were effective in bonding titanium. The decrease in bond strength was mini mum when the titanium was primed with MDP and then bonded with the TBB -initiated resins.