Antimicrobial activity of TiO2-coated orthodontic ceramic brackets against Streptococcus mutans and Candida albicans
Articles > Article · 2010
Authors: E. Ozyildiz, M. Guden, Ataç UZEL, I. Karaboz, O. Akil, Tevfik Hakan BULUT
Biotechnology and Bioprocess Engineering, Journal Indexed in SCI Expanded, International, WoS, 2010, vol 15, pp 680-685
DOI: 10.1007/s12257-009-3005-4
Summary
Polycrystalline alumina ceramic orthodontic brackets were coated with anatase TiO2 film via a sol-gel dip-coating method. The surface structure morphology and composition of the films were evaluated via scanning electron microscopy, atomic force microscopy, and X-ray diffraction. The antimicrobial activity of the ceramic brackets was assessed against two oral pathogens, S. mutans and C. albicans. The results demonstrated that TiO2-coated brackets exposed to low energy UV-A illumination efficiently reduced the populations of test microorganisms relative to the uncoated brackets. The reduction efficiencies were 98% for S. mutans ATCC 10449 and 93% for C. albicans ATCC 60193.