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dc.contributor.authorGil Mur, Francisco Javier
dc.contributor.authorEspinar, Eduardo
dc.contributor.authorLlamas, José María
dc.contributor.authorManero Planella, José María
dc.contributor.authorGinebra Molins, Maria Pau
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2012-01-24T09:15:30Z
dc.date.available2012-01-24T09:15:30Z
dc.date.created2012
dc.date.issued2012
dc.identifier.citationGil, F.J. [et al.]. Variation of the superelastic properties and nickel release from original and reused NiTi orthodontic archwiresOriginal. "Journal of the mechanical behavior of biomedical materials", 2012, vol. 6, núm. 2, p. 113-119.
dc.identifier.issn1751-6161
dc.identifier.urihttp://hdl.handle.net/2117/14759
dc.description.abstractReuse of NiTi orthodontic wires has become increasingly common in dental clinics. For sterilization and recovery of the original superelastic properties of the wires, a heat treatment is usually performed between 500 and 600 ◦C. The aim of this study was to analyze the effect of these thermal treatments on the mechanical behavior and the microstructure of NiTi archwires of different compositions. A reduction of the Ni content was observed in the matrix of the thermally treated archwires, due to the formation of Ti3Ni4 precipitates. The nickel-rich precipitates were observed and characterized by Transmission Electron Microscopy (TEM) and electron diffraction. They were found to alter the mechanical properties of the wires, decreasing the transformation stresses, and causing a loss of activation of the NiTi archwires. The release of nickel was higher in the original archwires than in the reused ones, due to the matrix nickel depletion caused by the precipitation of Ti3Ni4.
dc.format.extent7 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshNickel-titanium alloys
dc.subject.lcshElasticity
dc.subject.lcshOrthodontics
dc.titleVariation of the superelastic properties and nickel release from original and reused NiTi orthodontic archwiresOriginal
dc.typeArticle
dc.subject.lemacNíquel-titani -- Aliatges
dc.subject.lemacElasticitat
dc.subject.lemacOrtodòncia
dc.contributor.groupUniversitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac9367649
dc.description.versionPostprint (published version)
local.citation.authorGil, F.J.; Espinar, E.; Llamas, J.; Manero, J.; Ginebra, M.
local.citation.publicationNameJournal of the mechanical behavior of biomedical materials
local.citation.volume6
local.citation.number2
local.citation.startingPage113
local.citation.endingPage119


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