3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/app11062547 http://hdl.handle.net/11449/208516 |
Resumo: | The aim of the present investigation was to calculate the stress distribution generated in the root dentine canal during mechanical rotation of five different NiTi endodontic instruments by means of a finite element analysis (FEA). Two conventional alloy NiTi instruments F360 25/04 and F6 Skytaper 25/06, in comparison to three heat treated alloys NiTI Hyflex CM 25/04, Protaper Next 25/06 and One Curve 25/06 were considered and analyzed. The instruments’ flexibility (reaction force) and geometrical features (cross section, conicity) were previously investigated. For each instrument, dentine root canals with two different elastic moduli(18 and 42 GPa) were simulated with defined apical ratios. Ten different CAD instrument models were created and their mechanical behaviors were analyzed by a 3D-FEA. Static structural analyses were performed with a non-failure condition, since a linear elastic behavior was assumed for all components. All the instruments generated a stress area concentration in correspondence to the root canal curvature at approx. 7 mm from the apex. The maximum values were found when instruments were analyzed in the highest elastic modulus dentine canal. Strain and von Mises stress patterns showed a higher concentration in the first part of curved radius of all the instruments. Conventional Ni-Ti endodontic instruments demonstrated higher stress magnitudes, regardless of the conicity of 4% and 6%, and they showed the highest von Mises stress values in sound, as well as in mineralized dentine canals. Heat-treated endodontic instruments with higher flexibility values showed a reduced stress concentration map. Hyflex CM 25/04 displayed the lowest von Mises stress values of, respectively, 35.73 and 44.30 GPa for sound and mineralized dentine. The mechanical behavior of all rotary endodontic instruments was influenced by the different elastic moduli and by the dentine canal rigidity. |
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3d finite element analysis of rotary instruments in root canal dentine with different elastic moduliComputer-aided designEndodontic treatmentFinite element analysisNickel–titanium alloysThe aim of the present investigation was to calculate the stress distribution generated in the root dentine canal during mechanical rotation of five different NiTi endodontic instruments by means of a finite element analysis (FEA). Two conventional alloy NiTi instruments F360 25/04 and F6 Skytaper 25/06, in comparison to three heat treated alloys NiTI Hyflex CM 25/04, Protaper Next 25/06 and One Curve 25/06 were considered and analyzed. The instruments’ flexibility (reaction force) and geometrical features (cross section, conicity) were previously investigated. For each instrument, dentine root canals with two different elastic moduli(18 and 42 GPa) were simulated with defined apical ratios. Ten different CAD instrument models were created and their mechanical behaviors were analyzed by a 3D-FEA. Static structural analyses were performed with a non-failure condition, since a linear elastic behavior was assumed for all components. All the instruments generated a stress area concentration in correspondence to the root canal curvature at approx. 7 mm from the apex. The maximum values were found when instruments were analyzed in the highest elastic modulus dentine canal. Strain and von Mises stress patterns showed a higher concentration in the first part of curved radius of all the instruments. Conventional Ni-Ti endodontic instruments demonstrated higher stress magnitudes, regardless of the conicity of 4% and 6%, and they showed the highest von Mises stress values in sound, as well as in mineralized dentine canals. Heat-treated endodontic instruments with higher flexibility values showed a reduced stress concentration map. Hyflex CM 25/04 displayed the lowest von Mises stress values of, respectively, 35.73 and 44.30 GPa for sound and mineralized dentine. The mechanical behavior of all rotary endodontic instruments was influenced by the different elastic moduli and by the dentine canal rigidity.Endodontic Clinical Section Department of Biomedical and Neuromotor Sciences School of Dentistry University of Bologna-Alma Mater StudiorumUniversity of Taubaté (UNITAU), TaubatéDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University—UNESPDepartment of Chemical Materials and Industrial Production Engineering University of Naples Federico II and the Center for Advanced Biomaterials for HealthCare@CRIB Istituto Italiano di TecnologiaSchool of Dentistry University of Naples Federico IIDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University—UNESPUniversity of Bologna-Alma Mater StudiorumUniversity of Taubaté (UNITAU)Universidade Estadual Paulista (Unesp)Istituto Italiano di TecnologiaUniversity of Naples Federico IIPrati, CarloTribst, João Paulo MendesPiva, Amanda Maria de Oliveira Dal [UNESP]Borges, Alexandre Luiz Souto [UNESP]Ventre, MaurizioZamparini, FaustoAusiello, Pietro2021-06-25T11:13:26Z2021-06-25T11:13:26Z2021-03-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/app11062547Applied Sciences (Switzerland), v. 11, n. 6, 2021.2076-3417http://hdl.handle.net/11449/20851610.3390/app110625472-s2.0-85102925405Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Sciences (Switzerland)info:eu-repo/semantics/openAccess2021-10-23T19:02:13Zoai:repositorio.unesp.br:11449/208516Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:45:39.765885Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
title |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
spellingShingle |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli Prati, Carlo Computer-aided design Endodontic treatment Finite element analysis Nickel–titanium alloys |
title_short |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
title_full |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
title_fullStr |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
title_full_unstemmed |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
title_sort |
3d finite element analysis of rotary instruments in root canal dentine with different elastic moduli |
author |
Prati, Carlo |
author_facet |
Prati, Carlo Tribst, João Paulo Mendes Piva, Amanda Maria de Oliveira Dal [UNESP] Borges, Alexandre Luiz Souto [UNESP] Ventre, Maurizio Zamparini, Fausto Ausiello, Pietro |
author_role |
author |
author2 |
Tribst, João Paulo Mendes Piva, Amanda Maria de Oliveira Dal [UNESP] Borges, Alexandre Luiz Souto [UNESP] Ventre, Maurizio Zamparini, Fausto Ausiello, Pietro |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
University of Bologna-Alma Mater Studiorum University of Taubaté (UNITAU) Universidade Estadual Paulista (Unesp) Istituto Italiano di Tecnologia University of Naples Federico II |
dc.contributor.author.fl_str_mv |
Prati, Carlo Tribst, João Paulo Mendes Piva, Amanda Maria de Oliveira Dal [UNESP] Borges, Alexandre Luiz Souto [UNESP] Ventre, Maurizio Zamparini, Fausto Ausiello, Pietro |
dc.subject.por.fl_str_mv |
Computer-aided design Endodontic treatment Finite element analysis Nickel–titanium alloys |
topic |
Computer-aided design Endodontic treatment Finite element analysis Nickel–titanium alloys |
description |
The aim of the present investigation was to calculate the stress distribution generated in the root dentine canal during mechanical rotation of five different NiTi endodontic instruments by means of a finite element analysis (FEA). Two conventional alloy NiTi instruments F360 25/04 and F6 Skytaper 25/06, in comparison to three heat treated alloys NiTI Hyflex CM 25/04, Protaper Next 25/06 and One Curve 25/06 were considered and analyzed. The instruments’ flexibility (reaction force) and geometrical features (cross section, conicity) were previously investigated. For each instrument, dentine root canals with two different elastic moduli(18 and 42 GPa) were simulated with defined apical ratios. Ten different CAD instrument models were created and their mechanical behaviors were analyzed by a 3D-FEA. Static structural analyses were performed with a non-failure condition, since a linear elastic behavior was assumed for all components. All the instruments generated a stress area concentration in correspondence to the root canal curvature at approx. 7 mm from the apex. The maximum values were found when instruments were analyzed in the highest elastic modulus dentine canal. Strain and von Mises stress patterns showed a higher concentration in the first part of curved radius of all the instruments. Conventional Ni-Ti endodontic instruments demonstrated higher stress magnitudes, regardless of the conicity of 4% and 6%, and they showed the highest von Mises stress values in sound, as well as in mineralized dentine canals. Heat-treated endodontic instruments with higher flexibility values showed a reduced stress concentration map. Hyflex CM 25/04 displayed the lowest von Mises stress values of, respectively, 35.73 and 44.30 GPa for sound and mineralized dentine. The mechanical behavior of all rotary endodontic instruments was influenced by the different elastic moduli and by the dentine canal rigidity. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:13:26Z 2021-06-25T11:13:26Z 2021-03-02 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3390/app11062547 Applied Sciences (Switzerland), v. 11, n. 6, 2021. 2076-3417 http://hdl.handle.net/11449/208516 10.3390/app11062547 2-s2.0-85102925405 |
url |
http://dx.doi.org/10.3390/app11062547 http://hdl.handle.net/11449/208516 |
identifier_str_mv |
Applied Sciences (Switzerland), v. 11, n. 6, 2021. 2076-3417 10.3390/app11062547 2-s2.0-85102925405 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Sciences (Switzerland) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128698142949376 |