Document Detail

Surface modification of orthodontic wires with photocatalytic titanium oxide for its antiadherent and antibacterial properties.
MedLine Citation:
PMID:  17465657     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To test the antiadherent and antibacterial properties of surface modification of orthodontic wires with photocatalytic titanium oxide (TiO(2)). MATERIALS AND METHODS: TiO(2) was coated on the surface of the orthodontic wires by a sol-gel thin film dip-coating method. Bacterial adhesion to the wires was evaluated by the weight change of the wires. The antibacterial activity of the surface-modified orthodontic wires was demonstrated by the dilution agar plate method for Streptococcus mutans and spectrophotometry for Porphyromonas gingivalis. RESULTS: The orthodontic wires coated with the photocatalytic TiO(2) showed an antiadherent effect against S. mutans compared with the uncoated wires. The bacterial mass that bound to the TiO(2)-coated orthodontic wires remained unchanged, whereas that of the uncoated wires increased by 4.97%. Furthermore, the TiO(2)-coated orthodontic wires had a bactericidal effect on S. mutans and P. gingivalis, which cause dental caries and periodontitis, respectively. The antiadherent and antibacterial mechanisms of TiO(2) to break down the cell wall of those bacteria were revealed by scanning electron microscopy. CONCLUSION: The surface modification of orthodontic wires with photocatalytic TiO(2) can be used to prevent the development of dental plaque during orthodontic treatment.
Mi-Jin Chun; Eunju Shim; Eun-Hee Kho; Keum-Joo Park; Jarang Jung; Jin-Man Kim; Byunghoon Kim; Ki-Heon Lee; Dong-Lyun Cho; Dong-Hoon Bai; Syng-Ill Lee; Hyeon-Shik Hwang; Seung-Ho Ohk
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Angle orthodontist     Volume:  77     ISSN:  0003-3219     ISO Abbreviation:  Angle Orthod     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-30     Completed Date:  2007-08-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370550     Medline TA:  Angle Orthod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  483-8     Citation Subset:  D; IM    
Department of Oral Microbiology, 2nd Stage of Brain Korea 21 for School of Dentistry, Chonnam National University, Gwangju, South Korea.
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MeSH Terms
Anti-Bacterial Agents / pharmacology*
Bacterial Adhesion / drug effects*
Coated Materials, Biocompatible / pharmacology*
Orthodontic Wires*
Porphyromonas gingivalis / drug effects,  physiology
Streptococcus mutans / drug effects,  physiology
Surface Properties
Titanium / pharmacology*
Reg. No./Substance:
0/Anti-Bacterial Agents; 0/Coated Materials, Biocompatible; 13463-67-7/titanium dioxide; 7440-32-6/Titanium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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