 This study investigates the effect of different cleaning methods on bioactive coatings made of titanium oxide and hydroxyapatite, HAP. The coatings were produced by plasma electrolytic oxidation in either aqueous or molten salt solutions. The cleaning methods included autoclaving, ultraviolet light, radio frequency, air plasma, and ultraviolet ozone. The results showed that the coatings obtained from molten salt had a finer crystal structure, than those obtained from aqueous electrolyte solutions. After cleaning, the carbon content decreased significantly from 5.21 at percent to 0.11 at percent, corresponding to a decrease in organic contamination and a decrease in the contact angle. The most effective and moderate cleaning method was found to be ozone treatment. This article was authored by Avital Schwartz, Alexei Ksenko, Michael Zinigrad, and others. We are article.tv, links in the description below.