| Corrosion resistance of different nickel-titanium archwires in acidic fluoride-containing artificial saliva. | |
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MedLine Citation:
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PMID: 20050751 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To test the hypothesis that different nickel-titanium (NiTi) archwires may have dissimilar corrosion resistance in a fluoride-containing oral environment. MATERIALS AND METHODS: Linear polarization test, a fast electrochemical technique, was used to evaluate the corrosion resistance, in terms of polarization resistance (R(p)), of four different commercial NiTi archwires in artificial saliva (pH 6.5) with various NaF concentrations (0%, 0.01%, 0.1%, 0.25%, and 0.5%). Two-way analysis of variance was used to analyze R(p) with the factors of archwire manufacturer and NaF concentration. Surface characterizations of archwires were analyzed using scanning electron microscopy, atomic force microscopy, and x-ray photoelectron spectroscopy. RESULTS: Both archwire manufacturer and NaF concentration had a significant influence on R(p) of NiTi archwires. Different surface topography was present on the test NiTi archwires that contained the similar surface chemical structure (TiO(2) and trace NiO). The surface topography did not correspond to the difference in corrosion resistance of the NiTi archwires. Increasing the NaF concentration in artificial saliva resulted in a decrease in R(p), or corrosion resistance, of all test NiTi archwires. The NiTi archwires severely corroded and showed similar corrosion resistance in 0.5% NaF-containing environment. CONCLUSIONS: Different NiTi archwires had dissimilar corrosion resistance in acidic fluoride-containing artificial saliva, which did not correspond to the variation in the surface topography of the archwires. The presence of fluoride in artificial saliva was detrimental to the corrosion resistance of the test NiTi archwires, especially at a 0.5% NaF concentration. |
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Authors:
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Tzu-Hsin Lee; Ta-Ko Huang; Shu-Yuan Lin; Li-Kai Chen; Ming-Yung Chou; Her-Hsiung Huang |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Angle orthodontist Volume: 80 ISSN: 0003-3219 ISO Abbreviation: Angle Orthod Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-01-06 Completed Date: 2010-06-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370550 Medline TA: Angle Orthod Country: United States |
Other Details:
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Languages: eng Pagination: 547-53 Citation Subset: D; IM |
Affiliation:
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Institute of Medicine, Chung Shan Medical University, Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cariostatic Agents
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chemistry* Corrosion Dental Alloys / chemistry* Fluorides / chemistry* Humans Hydrogen-Ion Concentration Microscopy, Atomic Force Microscopy, Electron, Scanning Nickel / chemistry* Orthodontic Wires* Photoelectron Spectroscopy Polarography Saliva, Artificial / chemistry* Sodium Fluoride / chemistry Surface Properties Titanium / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Cariostatic Agents; 0/Dental Alloys; 0/Fluorides; 0/Saliva, Artificial; 12035-60-8/titanium nickelide; 1313-99-1/nickel monoxide; 13463-67-7/titanium dioxide; 7440-02-0/Nickel; 7440-32-6/Titanium; 7681-49-4/Sodium Fluoride |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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