Antimicrobial Activity of TiO2-coated Orthodontic Ceramic Brackets against Streptococcus mutans and Candida albicans

Ozyildiz E., Guden M., Uzel A. , Karaboz I., Akil O., Bulut H.

BIOTECHNOLOGY AND BIOPROCESS ENGINEERING, cilt.15, ss.680-685, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 15 Konu: 4
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1007/s12257-009-3005-4
  • Sayfa Sayıları: ss.680-685


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.