Corrosion resistance of titanium-containing dental orthodontic wires in fluoride-containing artificial saliva

doi:10.1016/j.jallcom.2009.09.015

中山醫學大學機構典藏 CSMUIR > 口腔醫學院 > 口腔醫學研究所 > 期刊論文 > Item 310902500/15802

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/15802

Title:	Corrosion resistance of titanium-containing dental orthodontic wires in fluoride-containing artificial saliva
Authors:	Lee, Tzu-Hsin Wang, Chia-Ching Huang, Ta-Ko Chen, Li-Kai Chou, Ming-Yung Huange, Her-Hsiung
Contributors:	中山醫大口腔科學研究所
Keywords:	Corrosion resistance;Titanium-containing orthodontic wire;Passive film;Fluoride;Dental alloys
Date:	2009
Issue Date:	2016-08-15T05:59:27Z (UTC)
ISSN:	0925-8388
Abstract:	This study was to investigate the corrosion resistance of different Ti-containing dental orthodontic wires (including Ni–Ti, Ni–Ti–Cu, Ti–Mo–Zr–Sn, and Ti–Nb alloys) in acidic fluoride-containing artificial saliva using cyclic potentiodynamic polarization curve measurements. Different NaF concentrations (0%, 0.2%, and 0.5%), simulating the fluoride contents in commercial toothpastes, were added to the artificial saliva. Surface characterization was analyzed using X-ray photoelectron spectrometry. Cyclic potentiodynamic polarization curves showed that the presence of fluoride ions, especially 0.5% NaF, was detrimental to the protective ability of the TiO2-based film on the Ti-containing wires. This might lead to a decrease in the corrosion resistance of the tested alloys, i.e. an increase in the corrosion rate and anodic current density and a decrease in the passive film breakdown potential. Among the tested Ti-containing wires, the Ni–Ti and Ni–Ti–Cu wires containing mainly TiO2 on surface film were more susceptible to fluoride-enhanced corrosion, while the Ti–Mo–Zr–Sn and Ti–Nb wires containing MoO3/ZrO2/SnO and Nb2O5, respectively, along with TiO2 on surface film were pitting corrosion resistant and showed a lower susceptibility to fluoride-enhanced corrosion. The difference in corrosion resistance of the tested commercial Ti-containing dental orthodontic wires was significantly dependent on the passive film characteristics on wires’ surface.
URI:	http://dx.doi.org/10.1016/j.jallcom.2009.09.015 https://ir.csmu.edu.tw:8080/ir/handle/310902500/15802
Relation:	Journal of Alloys and CompoundsVolume 488, Issue 1, 20 November 2009, Pages 482–489
Appears in Collections:	[口腔醫學研究所] 期刊論文

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	372	View/Open

View Licence

Loading...