Abstract
When irradiated under near-ultraviolet (UV) light, TiO2 exhibits strong bactericidal activity. The TiO2 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 TiO2, rutile and anatase, thermal oxidation and anodic oxidation were employed to form each structure, respectively. The antibacterial effect of TiO2 film on TiAg was also compared with that on Ti. Bacterial solutions were pipetted onto the TiO2-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. TiO2 coatings formed on both Ti and TiAg specimens did not exhibit cytotoxicity on the L-929 cells of mice.
| Original language | English |
|---|---|
| Pages (from-to) | 353-359 |
| Number of pages | 7 |
| Journal | Journal of Biomedical Materials Research - Part B Applied Biomaterials |
| Volume | 80 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2007 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Biomaterials
- Biomedical Engineering
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Photocatalytic antibacterial effect of TiO2 film formed on Ti and TiAg exposed to Lactobacillus acidophilus. / Choi, Jung Yoon; Kim, Kyungho; Choy, Kwang Chul; Oh, Keun Taek; Kim, Kyoung Nam.
In: Journal of Biomedical Materials Research - Part B Applied Biomaterials, Vol. 80, No. 2, 01.02.2007, p. 353-359.Research output: Contribution to journal › Article
TY - JOUR
T1 - Photocatalytic antibacterial effect of TiO2 film formed on Ti and TiAg exposed to Lactobacillus acidophilus
AU - Choi, Jung Yoon
AU - Kim, Kyungho
AU - Choy, Kwang Chul
AU - Oh, Keun Taek
AU - Kim, Kyoung Nam
PY - 2007/2/1
Y1 - 2007/2/1
N2 - When irradiated under near-ultraviolet (UV) light, TiO2 exhibits strong bactericidal activity. The TiO2 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 TiO2, rutile and anatase, thermal oxidation and anodic oxidation were employed to form each structure, respectively. The antibacterial effect of TiO2 film on TiAg was also compared with that on Ti. Bacterial solutions were pipetted onto the TiO2-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. TiO2 coatings formed on both Ti and TiAg specimens did not exhibit cytotoxicity on the L-929 cells of mice.
AB - When irradiated under near-ultraviolet (UV) light, TiO2 exhibits strong bactericidal activity. The TiO2 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 TiO2, rutile and anatase, thermal oxidation and anodic oxidation were employed to form each structure, respectively. The antibacterial effect of TiO2 film on TiAg was also compared with that on Ti. Bacterial solutions were pipetted onto the TiO2-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. TiO2 coatings formed on both Ti and TiAg specimens did not exhibit cytotoxicity on the L-929 cells of mice.
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UR - http://www.scopus.com/inward/citedby.url?scp=33846972294&partnerID=8YFLogxK
U2 - 10.1002/jbm.b.30604
DO - 10.1002/jbm.b.30604
M3 - Article
VL - 80
SP - 353
EP - 359
JO - Journal of Biomedical Materials Research
JF - Journal of Biomedical Materials Research
SN - 1552-4973
IS - 2
ER -