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dc.contributor.authorArciniegas Angarita, Milena Patricia
dc.contributor.authorManero Planella, José María
dc.contributor.authorEspinar, Eduardo
dc.contributor.authorLlamas Carreras, Jose Maria
dc.contributor.authorBarrera Mora, Jose Maria
dc.contributor.authorGil Mur, Francisco Javier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2013-11-22T09:25:33Z
dc.date.created2013-08-01
dc.date.issued2013-08-01
dc.identifier.citationArciniegas, M. [et al.]. New Ni-free superelastic alloy for orthodontic applications. "Materials science and engineering C. Biomimetic and supramolecular systems", 01 Agost 2013, vol. 33, núm. 6, p. 3325-3328.
dc.identifier.issn0928-4931
dc.identifier.urihttp://hdl.handle.net/2117/20698
dc.description.abstractA potential new Ni-free Ti alloy for biomedical applications was assessed in order to investigate the superelastic behavior, corrosion resistance and the biocompatibility. The alloy studied was Ti19.1Nb8.8Zr. The chemical composition was determined by X-ray microanalysis, the thermoelastic martensitic transformation was characterized by high sensitivity calorimeter. The critical stresses were determined by electromechanical testing machine and the corrosion behavior was analyzed by potentiostatic equipment in artificial saliva immersion at 37 °C. The results were compared with six different NiTi orthodontic archwire brands. The biocompatibility was studied by means of cultures of MG63 cells. Ni-free Ti alloy exhibits thermoelastic martensitic transformation with Ms = 45 °C. The phase present at 37 °C was austenite which under stress can induce martensite. The stress–strain curves show a superelastic effect with physiological critical stress (low and continuous) and a minimal lost of the recovery around 150 mechanical cycles. The corrosion resistance improves the values obtained by different NiTi alloys avoiding the problem of the Ni adverse reactions caused by Ni ion release. Cell culture results showed that adhered cell number in new substrate was comparable to that obtained in a commercially pure Ti grade II or beta-titanium alloy evaluated in the same conditions. Consequently, the new alloy presents an excellent in-vitro response.
dc.format.extent4 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.lcshOrthodontics
dc.subject.lcshTitanium alloys
dc.subject.otherBiocompatibility
dc.subject.otherCorrosion
dc.subject.otherMartensitic transformation
dc.subject.otherNi-free alloy
dc.subject.otherOrthodontic wires
dc.subject.otherSuperelastic archwire
dc.titleNew Ni-free superelastic alloy for orthodontic applications
dc.typeArticle
dc.subject.lemacOrtodòncia
dc.subject.lemacTitani -- Aliatges
dc.contributor.groupUniversitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits
dc.identifier.doi10.1016/j.msec.2013.04.014
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0928493113002282
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac12755910
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorArciniegas, M.; Manero, J.; Espinar, E.; Llamas, J.M.; Barrera, J.M.; Gil, F.J.
local.citation.publicationNameMaterials science and engineering C. Biomimetic and supramolecular systems
local.citation.volume33
local.citation.number6
local.citation.startingPage3325
local.citation.endingPage3328


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