Bioaktivne kompozitne prevlake na bazi hidroksiapatita na titanu za primene u ortopediji / Bioactive hydroxyapatite-based composite coatings on titanium for orthopedic applications

Abstract

Kompozitna prevlaka hidroksiapatita (HAP) sa prirodnim polimerima hitozanom (CS) i polivinil-alkoholom (PVA), kao i sa antibiotikom gentamicinom (Gent) je elektroforetski taložena na titanu, pri konstantnom naponu. Formiranje nove kompozitne HAP/PVA/CS/Gent prevlake je potvrđeno infracrvenom spektroskopijom sa Furijeovom transformacijom. Necitotoksični efekat istaložene HAP/PVA/CS/Gent prevlake je dokazan MTT testom prema dve ćelijske linije (MRC-5 i L929). Sposobnost HAP/PVA/CS/Gent prevlake da indukuje i promoviše osteointegraciju je pokazana ALP testom.

Composite coating of hydroxyapatite (HAP) with natural polymers chitosan (CS) and poly(vinyl alcohol) (PVA) with the antibiotic gentamicin (Gent) was electrophoretically deposited on titanium from an aqueous suspension, at a constant voltage. Formation of a new composite HAP/PVA/CS/Gent coating was confirmed by Fourier transform infrared spectroscopy. Non-cytotoxicity of deposited HAP/PVA/CS/Gent coating was demonstrated by MTT assay towards two types of cell lines (MRC-5 and L929). HAP/PVA/CS/Gent coating ability to induce and promote the osseointegration process was proved by the ALP assay.