Metalurji ve Malzeme Mühendisliği

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A study on tailoring silver release from micro-arc oxidation coating fabricated on titanium

(Wiley, 2024) Kayan, Gizem Özge ; Muhaffel, Faiz ; Kayan, Asgar ; Nofar, Mohammadreza ; Cimenoglu, Huseyin ; orcid.org/0000-0002-4364-2930 ; orcid.org/0000-0002-9921-7108 ; Metalurji ve Malzeme Mühendisliği

This study is initiated with the aim of regulating the release of silver (Ag) as an antibacterial agent from the micro-arc oxidation (MAO) coating. Herein, an external 5 wt% Tin(II) chloride (SnCl2) containing biodegradable polycaprolactone (PCL) layer is formed on the 0.8 wt% Ag-incorporated MAO coating by the dip coating method. 5 wt% SnCl2 addition into PCL provides a steady release of Ag into concentrated simulated body fluid (1.5X SBF) from the underlying MAO coating at 37 °C. When the Ag release rate is taken into consideration, it is quantified as 0.0089 and 0.0586 ppm day−1 for PCL-covered MAO and PCL-free MAO coatings, respectively. It is finally concluded that the preliminary result of this study can be promising for minimizing the in vivo adverse effects of Ag+ ions arising from rapid release as well as maintaining antibacterial efficacy for prolonged periods, which is ideal for preventing the risk of postimplantation infections.