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In vitro evaluation of surface topographic changes and nickel release of lingual orthodontic archwires

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10.1007/s10856-009-3898-7
 
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Suárez, Carlos
Vilar, Teresa
Gil Mur, Francisco JavierMés informació
Sevilla Sánchez, Pablo
Document typeArticle
Defense date2010-02
Rights accessRestricted access - confidentiality agreement
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
The objective of the article is to study surface topographic changes and nickel release in lingual orthodontic archwires in vitro. Stainless steel (SS), nickel–titanium (NiTi) and copper–nickel–titanium (CuNiTi) lingual orthodontic archwires were studied using atomic absorption spectrometry for nickel release after immersion in a saline solution. Surface roughness changes were measured using atomic force microscopy. Differences between groups were analyzed using independent sample t-tests. Statistically significant changes in roughness were seen in all archwires except NiTi. Surface changes were most severe in the CuNiTi alloy. SS archwires released the highest amount of nickel. In conclusion, only roughness changes in CuNiTi archwires seemed to be clinically significant. The amount of nickel released for all archwires tested is below the levels known to cause cell damage.
CitationSuárez, C. [et al.]. In vitro evaluation of surface topographic changes and nickel release of lingual orthodontic archwires. "Journal of materials science. Materials in medicine", Febrer 2010, vol. 21, núm. 2, p. 675-683. 
URIhttp://hdl.handle.net/2117/7801
DOI10.1007/s10856-009-3898-7
ISSN0957-4530
Publisher versionhttp://www.springerlink.com/content/g762228j72745p67/
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  • Departament de Ciència dels Materials i Enginyeria Metal·lúrgica - Articles de revista [961]
  • BBT - Biomaterials, Biomecànica i Enginyeria de Teixits - Articles de revista [364]
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