OBJECTIVETo evaluated the bonding strength between pure titanium and Solidex after deposition by magnetron sputtering TiSiN with different content of Si (9%, 19%) and analyzed the surface component by electron probe micro-analysis (EPMA).

METHODSAll pure titanium samples divided into 3 groups according to different surface treatment, then bonded with Solidex light-cured composite. Material test machine was used to measure bonding strength and the surface was analyzed by EPMA.

RESULTSThe bonding strength of deposition with TiSiN groups were higher than unfilming group, increasing the content of Si could enhance the bonding strength between pure titanium and Solidex in TiSiN groups (P < 0.05). EPMA showed amorphous materials like TiN, SiN gathered on the surface in TiSiN groups. There were obvious interspaces between unfilming pure titanium and Solidex, contrary no interspaces was observed in TiSiN groups.

CONCLUSIONThe bonding strength of filming groups was higher than unfilming group, amorphous material like TiN, SiN gathering on the surface may prevent the microleakage and stop metal ion leaking.