- Turkish Journal of Biology
- Vol: 38 Issue: 2
- Photocatalytic antimicrobial effect of TiO2 anatase thin-film-coated orthodontic arch wires on 3 ora...
Photocatalytic antimicrobial effect of TiO2 anatase thin-film-coated orthodontic arch wires on 3 oral pathogens
Authors : Figen Özyildiz, Ataç Uzel, Ayşe Serpil Hazar, Mustafa Güden, Sultan Ölmez, Işıl Aras, Ismail Karaboz
Pages : 289-295
Doi:10.3906/biy-1308-43
View : 15 | Download : 2
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :The aim of this study was to introduce antimicrobial activity to stainless steel orthodontic arch wires by coating them with TiO2 in anatase form. Stainless steel (0.016 × 0.022 inch), D-rect (0.016 × 0.022 inch), and multistranded hammered retainer wires (0.014 × 0.018 inch) were coated with TiO2 anatase by the sol-gel dip coating method. The wires were assessed for their photocatalytic antimicrobial activity against Streptococcus mutans, Candida albicans, and Enterococcus faecalis. After illumination under UVA (315-400 nm) at 1.0 mW/cm2 for 1 h, the reduction efficiencies of the anatase-coated arch wires were calculated by using colony-forming unit counts. All anatase-coated arch wires showed remarkable inhibitor effects against the test microorganisms under UVA. The most efficient wire on S. mutans was the stainless steel wire, with a 99.99% reduction in growth, but multistranded hammered retainer wire was the most active against both C. albicans and E. faecalis, with 98.0% and 91.68% reduction rates, respectively. TiO2-coated arch wires exposed to UVA illumination showed significant antimicrobial activity when compared with uncoated samples and coated, but not UVA-exposed, samples. Our results suggest that the antimicrobial effect of TiO2-coated arch wires in long-lasting orthodontic treatments would be beneficial for the prophylaxis of caries.Keywords : Key words: Antimicrobial activity, Candida albicans, Enterococcus faecalis, orthodontic arch wires, Streptococcus mutans, TiO2