Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
3135537 | International Orthodontics | 2009 | 13 Pages |
Abstract
The impact of fluoride and pH acid on the corrosion resistance of orthodontic NiTi was studied using classic electrochemical measurement techniques including follow-up over time of the corrosion potential, polarization measurements and impedance spectroscopy. In addition, scanning electron microscopy was used to evaluate the status of the alloy surface before and after immersion in the different media. The results demonstrated the particularly low corrosion resistance of NiTi alloy in the presence of fluorides. In an acidic environment, the alloy showed greater resistance thanks to the passivation phenomenon. The synergistic action of fluoride and ph Acid on NiTi corrosion was not clearly demonstrated.
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Authors
Hicham Benyahia, Mohamed EbnTouhami, Issam Forsal, Fatima Zaoui, Elhoussine Aalloula,