Surface Characterization and In Vivo Evaluation of Dual Acid-Etched and Grit-Blasted/Acid-Etched Implants in XXXX .

@entity5066 @entity742
PURPOSE: Dual acid-etching is widely used to modify dental implant topography and enhance early bone healing. This study evaluated the histomorphometric, biomechanical, and histological bone response to acid-etched ( @entity5066 ) in comparison with grit-blasted/acid-etched (GB) and machined control (C) implants within sites of relatively low-bone remodeling rates. MATERIALS AND METHODS: Implant surface topography was evaluated by scanning electron microscopy and optical interferometry (IFM). Six adult male @entity742 (n = 6) received 72 Ti-6Al-4V implants (n = 24 per surface) in both ilium (n = 12 per bone bilaterally). The implants remained for 3 and 6 weeks in vivo. The histomorphometric parameters bone-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated. Biomechanical analysis consisted of torque-to-interface failure. RESULTS: IFM analysis showed the highest average surface roughness for GB and the highest density of summits and developed surface area percentage (P < 0.01) for @entity5066 . No difference was observed in BAFO for all groups in 3 and 6 weeks. Increased BIC and torque resistance were observed for @entity5066 implants at both time points after implantation. CONCLUSIONS: Overall, improved bone-to-implant response was observed for the @entity5066 implant surface.
