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Photocatalytic antibacterial effect of TiO(2) film formed on Ti and TiAg exposed to Lactobacillus acidophilus.
- Source :
-
Journal of biomedical materials research. Part B, Applied biomaterials [J Biomed Mater Res B Appl Biomater] 2007 Feb; Vol. 80 (2), pp. 353-9. - Publication Year :
- 2007
-
Abstract
- When irradiated under near-ultraviolet (UV) light, TiO(2) exhibits strong bactericidal activity. The TiO(2) photocatalyst would be effective on orthodontic appliances after its antibacterial effect on the carcinogenic microorganism Lactobacillus acidophilus is evaluated. To compare the antibacterial effect of two crystalline forms of TiO(2), rutile and anatase, thermal oxidation and anodic oxidation were employed to form each structure, respectively. The antibacterial effect of TiO(2) film on TiAg was also compared with that on Ti. Bacterial solutions were pipetted onto the TiO(2)-coated specimen and illuminated with UVA (2 x 15 W, black light, 356 nm) up to 100 min and the reaction solutions were incubated to count the colony-forming units. The antibacterial activity of the coated specimens was similar to that of the uncoated group. The antibacterial activity of the coated specimens of TiAg was not different from that of Ti. TiO(2) coatings formed on both Ti and TiAg specimens did not exhibit cytotoxicity on the L-929 cells of mice.<br /> ((c) 2006 Wiley Periodicals, Inc.)
- Subjects :
- Alloys
Anti-Bacterial Agents pharmacology
Anti-Bacterial Agents radiation effects
Humans
In Vitro Techniques
Materials Testing
Microscopy, Electron, Scanning
Orthodontic Appliances microbiology
Oxidation-Reduction
Photochemistry
Silver
Ultraviolet Rays
Dental Materials pharmacology
Dental Materials radiation effects
Lactobacillus acidophilus drug effects
Titanium pharmacology
Titanium radiation effects
Subjects
Details
- Language :
- English
- ISSN :
- 1552-4973
- Volume :
- 80
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Journal of biomedical materials research. Part B, Applied biomaterials
- Publication Type :
- Academic Journal
- Accession number :
- 16850466
- Full Text :
- https://doi.org/10.1002/jbm.b.30604