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Surface modification of titanium by anodic oxidation in phosphoric acid at low potentials. Part 2. In vitro and in vivo study
Author(s) -
Gomez Sanchez A.,
Schreiner W.,
Ballarre J.,
Cisilino A.,
Duffó G.,
Ceré S.
Publication year - 2013
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5298
Subject(s) - anodizing , titanium , phosphoric acid , osseointegration , corrosion , electrochemistry , simulated body fluid , materials science , oxide , surface modification , titanium oxide , chemistry , implant , metallurgy , chemical engineering , nuclear chemistry , inorganic chemistry , composite material , scanning electron microscope , aluminium , electrode , surgery , organic chemistry , medicine , engineering
Electrochemical studies in SBF solution were performed, in order to determine the best corrosion resistance condition, comparing as‐received titanium, covered with its native surface oxide, and titanium anodized in phosphoric acid. The results indicate that the anodic films obtained at a constant potential of 30 V have higher barrier effect, and the protective layer remains effective against the aggressive anions present in SBF after 30 days of immersion. Due to the promising corrosion performance in simulated biological media coupled with the biocompatible surface characteristics, anodic films on titanium obtained at 30 V were implanted on Wistar Rats to compare the osseointegration results of this modified surface with that corresponding to as‐received titanium. It was found that, after 8 weeks of implantation, although the amount of bone surrounding the implant did not differ across the two different surface implants conditions, bone formation at the implant interface was found to be more homogeneous in anodized titanium. Copyright © 2013 John Wiley & Sons, Ltd.