[Research on the resin bond durability of glass-infiltrated alumina ceramic].

Objective To analyze the effect of different silane coupling agents on the resin bond durability of glass-infiltrated alumina ceramic.Methods A glass-infiltrated alumina ceramic was silanized or not by three silane coupling agents.The treated ceramic surfaces were bonded with two resin cements.Their micro-bond strength were measured after 0,30 000 thermal cycles.Results Before thermal cycling,resin cement A had lowest bond strength to ceramic,and ceramic treated by silane coupling agent A with two cements had lower bond strength than those treated by silane coupling agent B and C.After thermal cycling,cement A had no bond strength with no treated ceramic,only ceramic treated by silane coupling agent A with two cements had more than 5 MPa bond strength.Conclusion The glass-infiltrated alumina cermaic treated by the silane coupling agent activated by 10-methacryloyloxydecyl-dihydrogen phosphate could obtain better bond durability with different type of resin cements.