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dc.contributor.authorGil Mur, Francisco Javier
dc.contributor.authorCenizo, M.
dc.contributor.authorEspinar, Eduardo
dc.contributor.authorRodríguez Contreras, Alejandra María
dc.contributor.authorRupérez de Gracia, Elisa
dc.contributor.authorManero Planella, José María
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2013-12-05T11:33:26Z
dc.date.created2013-08
dc.date.issued2013-08
dc.identifier.citationGil, F.J. [et al.]. NiTi superelastic orthodontic wires with variable stress obtained by ageing treatments. "Materials letters", Agost 2013, vol. 104, núm. 1, p. 5-7.
dc.identifier.issn0167-577X
dc.identifier.urihttp://hdl.handle.net/2117/20925
dc.description.abstractA new strategy to obtain NiTi orthodontic archwires with variable correcting stresses in different segments is presented. Different heat treatments are applied in selected segments, which produce variations in the superelastic properties. These allow to modulate the correcting stresses to the requirements of the specific teeth. This method avoids laser welding, which is associated with corrosion and brittleness problems. The aim of this study is to analyze the effect of the heat treatment by zones on transformation temperatures, and stresses in NiTi orthodontic archwires with identical chemical composition. A reduction of the Ti content is observed, in the matrix of the posterior segment, due to the formation of Ti2Ni precipitates. This produces a decrease of the transformation temperatures and consequently an increase of correction stresses. The changes are smaller in the lateral segment due to the lower temperature reached. No changes are observed in the anterior segment in relation to the original archwire. The titanium-rich precipitates undergo observation and characterization by Transmission Electron Microscopy (TEM) and electron diffractio
dc.format.extent3 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.lcshOrthodontics, Corrective
dc.subject.otherSuperelastic
dc.subject.otherNiTi
dc.subject.otherOrthodontic archwires
dc.subject.otherShape memory alloys
dc.subject.otherAgeing
dc.titleNiTi superelastic orthodontic wires with variable stress obtained by ageing treatments
dc.typeArticle
dc.subject.lemacNíquel-titani -- Aliatges
dc.subject.lemacOrtodòncia correctora
dc.contributor.groupUniversitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits
dc.contributor.groupUniversitat Politècnica de Catalunya. CDAL - Centre de Disseny d'Aliatges Lleugers i Tractaments de Superfície
dc.identifier.doi10.1016/j.matlet.2013.03.135
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0167577X13004643#
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac11857657
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorGil, F.J.; Cenizo, M.; Espinar, E.; Rodriguez, A.; Rupérez de Gracia, E.; Manero, J.
local.citation.publicationNameMaterials letters
local.citation.volume104
local.citation.number1
local.citation.startingPage5
local.citation.endingPage7


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