Abstract
This study was concerned with the development of metal primer for crown and bridge resin. Nine kinds of adhesive cyclophosphazene monomer were synthesized and analyzed by IR and 1H-NMR. Then, 20〜50wt% of synthesized monomers were mixed with commercial monomers and light-cured metal primers were produced by adding photosensitizer. As an adherent, cobalt-chromium alloy measuring 3 mm in diameter was prepared. Tensile adhesive strength was measured after immersion in water at 37℃ for 24-hour.
On IR and 1H-NMR, all synthesized monomers were within expectations.
Among these, the synthesized monomer with the greatest adhesive strength was P4N4[OOCC6H3(COOH)2]3[OCH2CH2OCOC(CH3)=CH2]5 replacing 3 mols of Cl with 1, 2, 4-benzene tricarboxylic unhydrate and 5 mols of Cl with HEMA. When 40 wt% this synthesized monomer, 40 wt% HEMA and 20 wt% U-2TH were mixed, tensile adhesive strength was 22.9 MPa.
