Electrochemical impedance spectroscopy study of the nucleation and growth of apatite on chemically treated pure titanium

Abstract

Bone-like apatite formed on the surface of pure titanium pretreated with NaOH solution after having been immersed in simulated body fluid (SBF). In the present study, electrochemical impedance spectroscopy (EIS) measurement was used to investigate the nucleation and growth of apatite on chemically treated pure titanium immersed in the SBF solution. An appropriate equivalent circuit model was constructed to describe the nucleation and growth of apatite. It was found that EIS is a useful method for investigating the nucleation and growth of bone-like apatite on pure titanium pretreated with NaOH solution. It may quantify apatite growth on pretreated titanium substrates.