Abstract:

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.

Key words: glass-infiltrated alumina ceramic, silane coupling agent, resin cement, bond strength