Electrochemical Impedance Spectroscopy Study of the Nucleation and Growth of Apatite on Chemically Treated Titanium

Abstract

Bonelike apatite formed on the surface of titanium pretreated with NaOH solution after having been immersed in simulated body fluid (SBF), while no apatite formed on the surface of untreated titanium.In the present study, electrochemical impedance spectroscopy (EIS) measurement was used to investigate the nucleation and growth of apatite on chemically treated titanium immersed in the SBF solution and the difference between the behaviors of treated and untreated titanium. Appropriate equivalent circuit models were constructed to describe the nucleation and growth of apatite and the thin oxide film formed on the surface of untreated titanium. It was found that EIS is a useful method for investigating the nucleation and growth of bonelike apatite on titanium pretreated with NaOH solution.

Electrostatic interactions as a predictor for osteoblast attachment to biomaterials

“…Each of the metal alloy powders, over the given pH range, has an average ζ‐potential value near zero, where NaOH treatment caused an increase in the ζ‐potential for CoCrMo and Ti6Al4V and a decrease in the magnitude of the ζ‐potential for 316L stainless steel. Although it is widely held that none of these common orthopedic materials exhibits direct bonding to bone, NaOH treatment has been shown to increase apatite layer formation in vitro on the surface of Ti alloys 14, 15. Here, Ti forms an alkali titanate hydrogel layer to which bone is observed to directly bond, both in vitro and in vivo 14.…”

Composite coatings for implants and tissue engineering scaffolds

“…Mechanisms and kinetics of biomimetic apatite formation and growth on Ti surfaces have been studied using a variety of analytical techniques Wang et al, 2002bWang et al, , 2003. Surface modifi cation of implantable metals through surface apatite formation via biomimetic deposition appears to be a good approach for improving the usability of these metals in the medical fi eld.…”

Evaluation of corrosion resistance and cytocompatibility of graded metal carbon film on Ti and NiTi prepared by hybrid cathodic arc/glow discharge plasma-assisted chemical vapor deposition

“…In addition, formation of an apatite layer can improve the corrosion resistance of Ti. Wang et al [39] observed that a bone-like apatite film prepared by NaOH pretreatment followed by simulated body fluid immersion showed improvement in the corrosion resistance of Ti in simulated body fluids. However, apatite deposition can be influenced by surface topography.…”