Effects of heat treatment and design on mechanical responses of niti endodontic instruments: a finite element analysis

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dc.creatorSuzanny Cristina Soares Martins
dc.creatorJéssica Dornelas Silva
dc.creatorAna Cecília Diniz Viana
dc.creatorVicente Tadeu Lopes Buono
dc.creatorLeandro Arruda Santos
dc.date.accessioned2023-07-27T18:57:14Z
dc.date.accessioned2025-09-09T00:49:37Z
dc.date.available2023-07-27T18:57:14Z
dc.date.issued2020
dc.identifier.doihttps://doi.org/10.1590/1980-5373-MR-2020-0087
dc.identifier.issn1980-5373
dc.identifier.urihttps://hdl.handle.net/1843/57088
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofMaterials Research
dc.rightsAcesso Aberto
dc.subjectTratamento termico
dc.subjectMetodo dos elementos finitos
dc.subject.otherNiTi endodontic files
dc.subject.otherHeat treatment
dc.subject.otherCross-sectional design
dc.subject.otherFinite element analysis
dc.subject.otherBending and torsional loads
dc.titleEffects of heat treatment and design on mechanical responses of niti endodontic instruments: a finite element analysis
dc.typeArtigo de periódico
local.citation.epage9
local.citation.issue3
local.citation.spage1
local.citation.volume23
local.description.resumoHeat treatments and geometries have a significant influence on the mechanical behavior of endodontic files. Finite element analyses were performed to verify the effects due to each of these parameters in NiTi files. Two designs and three NiTi atomic structures (resultant from different heat treatments) were selected for this study. The geometries of the ProTaper Next X1 and ProTaper Universal S2 files, and the structures of fully austenitic (conventional superelastic), austenite treated, and fully R-phased were used. The mechanical responses were evaluated under flexion and torsion loading conditions described by ISO 3630-1 specification. According to the results, the design of the X1 file exhibit higher flexibility in comparison to the S2 model. Under torsional loads, S2 showed higher stiffness. The structures of fully austenitic showed the least flexibility under flexion and the highest torsional stiffness. The stress levels reached for the austenitic condition were uppermost. The treated condition that resulted in a fully R-phase file usually presented a higher level of flexibility with lower stress levels, indicating a longer life in fatigue when compared to the other treatments.
local.identifier.orcidhttp://orcid.org/0000-0001-6713-8504
local.identifier.orcidhttps://orcid.org/0000-0003-4687-6051
local.identifier.orcidhttps://orcid.org/0000-0001-9172-6429
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA
local.publisher.departmentFAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA
local.publisher.initialsUFMG
local.url.externahttps://www.scielo.br/j/mr/a/xdpTNsPYP4RJpP4kWCLRHxx/?lang=en

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