COMPARISON OF TC4 TITANIUM ALLOY AND MODIFIED SURFACES ANTIBACTERIAL PROPERTY BY BACTERIAL ADHESION METHOD

Titanium alloy TC4 (Ti6Al4V) used as dental implant materials were modified by different surface modification technologies. The bacterial adhesion method and the tagging effect of fluorescence were employed to evaluate antibacterial property of modified surfaces by observing bacterial adhesion status and counting quantities of bacterial adhesion on the Ti6Al4V surfaces below the fluorescence microscope;SPSS software was used to analysis and compare the antibacterial property of modified surfaces at the same time. The bacterial adhesion assay and statistic analysis results showed that: compared to the unmodified surface,both of ion nitriding-treated and ion plating-treated specimen surfaces could reduce bacterial adhesion significantly,and also there were no obvious differences between the two modification technologies treated surfaces at quantities of bacterial adhesion by statistic analysis,which means there were no obvious differences between the two modified processes treated surfaces at antibacterial property.