Effect of the Acid-Etching on Grit-Blasted Dental Implants to Improve Osseointegration: Histomorphometric Analysis of the Bone-Implant Contact in the Rabbit Tibia Model

Previous studies have shown that the most reliable way to evaluate success of an implant is by bone-to-implant contact (BIC). Recent techniques allow modifications surface improve mechanical and biological characteristics, also upgrade osseointegration. Objective: The aim was osseointegration in rabbit tibia two different titanium dental surfaces: shot-blasted with Al2O3 (SB) same treatment acid-etching immersion for 15 s HCl/H2SO4 (SB + AE). Material methods: Roughness parameters (Ra, Rt, Rz) were determined white light interferometer microscopy. Surface wettability evaluated a angle video-based system using water, di-iodomethane, formamide. free energy means Owens Wendt equations. Scanning electron microscopy equipped X-ray microanalysis used study morphology determine chemical composition surfaces. Twenty-four grade 4 implants (Essential Klockner®) implanted rabbit’s tibia, 12 each treatment, six rabbits. Six weeks later rabbits sacrificed sent histologic analysis. Resonance frequency analysis (RFA) recorded both at time surgery end research device (Osstell Mentor Osstell ISQ). Results: roughness measurements between treatments did not show statistically significant differences. However, effect acid etching made slightly more hydrophilic (decreasing from 74.7 SB 64.3 AE) it presented higher energy. ratio (BIC %) showed similar tendency, 55.18 ± 15.67 59.9 13.15 AE implants, respectively. After 6 healing, stability quotient (ISQ) value 76 4.47 one ISQ 75.83 8.44 (no difference). Implants properties had distinctive forms behavior regarding Furthermore, invasive method measure stability. Conclusion: Both surfaces studied high our terms BIC values RFA. RFA systems confirmed nearly perfect reproducibility repeatability.