Comparison between Zn-modification and groove-formation towards better osseointegration of implant

Abstract

Ti implants with two-type surfaces, regular micro-groove and Zn-modification, were prepared in order to assess the effect of the implant surface on the osseointegration between bone and implant. Biomechanical push-out testing was performed to evaluate bone-implant interfacial shear strength at 4, 8 and 12 weeks after implantation to rabbit femora. The results revealed that there was no significant effect of the regular micro-groove on the bone fixation of the implants. On the other hand, Zn-modified implant was found to be effective for producing a stronger bone fixation than those with the regular micro-groove.