Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.sciencedirect.com/science/article/pii/S0955221915000254 http://hdl.handle.net/11449/129664 |
Resumo: | This study evaluated the shear stress presented in glass fiber posts with parallel fiber (0) and different coronal diameters under fatigue, fracture resistance and PEA. 160 glass-fiber posts (N=160) with eight different coronal diameters were used (DT = double tapered, number of the post = coronal diameter and W=Wider - fiber post with coronal diameter wider than the conventional): DT1.4; DT1.8 W; DT1.6; DT2W; DT1.8; DT2.2 W; DT2; DT2.2. Eighty posts were submitted to mechanical cycling (3 x 10(6) cycles; inclination: 45 degrees; load: 50 N; frequency: 4 Hz; temperature: 37 degrees C) to assess the surviving under intermittent loading and other eighty posts were submitted to fracture resistance testing (resistance [N] and shear-stress [MPa] values were obtained). The eight posts types were 3D modeled (Rhinoceros 4.0) and the shear-stress (MPa) evaluated using FEA (Ansys 13.0). One-way ANOVA showed statistically differences to fracture resistance (DT2.2 W and DT2.2 showed higher values) and shear stress values (DT1.4 showed lower values). Only the DT1.4 fiber posts failed after mechanical cycling. FEA showed similar values of shear stress between the groups and these values were similar to those obtained by shear stress testing. The failure analysis showed that 95% of specimens failed by shear. Posts with parallel fiber (0 degrees) may suffer fractures when an oblique shear load is applied on the structure; except the thinner group, greater coronal diameters promoted the same shear stresses. (C) 2014 Elsevier Ltd. All rights reserved. |
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Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diametersFiber postFracture strengthMechanical cyclingFinite element analysisFractographic analysisThis study evaluated the shear stress presented in glass fiber posts with parallel fiber (0) and different coronal diameters under fatigue, fracture resistance and PEA. 160 glass-fiber posts (N=160) with eight different coronal diameters were used (DT = double tapered, number of the post = coronal diameter and W=Wider - fiber post with coronal diameter wider than the conventional): DT1.4; DT1.8 W; DT1.6; DT2W; DT1.8; DT2.2 W; DT2; DT2.2. Eighty posts were submitted to mechanical cycling (3 x 10(6) cycles; inclination: 45 degrees; load: 50 N; frequency: 4 Hz; temperature: 37 degrees C) to assess the surviving under intermittent loading and other eighty posts were submitted to fracture resistance testing (resistance [N] and shear-stress [MPa] values were obtained). The eight posts types were 3D modeled (Rhinoceros 4.0) and the shear-stress (MPa) evaluated using FEA (Ansys 13.0). One-way ANOVA showed statistically differences to fracture resistance (DT2.2 W and DT2.2 showed higher values) and shear stress values (DT1.4 showed lower values). Only the DT1.4 fiber posts failed after mechanical cycling. FEA showed similar values of shear stress between the groups and these values were similar to those obtained by shear stress testing. The failure analysis showed that 95% of specimens failed by shear. Posts with parallel fiber (0 degrees) may suffer fractures when an oblique shear load is applied on the structure; except the thinner group, greater coronal diameters promoted the same shear stresses. (C) 2014 Elsevier Ltd. All rights reserved.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Fed Santa Maria, Fac Odontol, Prosthodont Unit, Grad Program Oral Sci, BR-97119900 Santa Maria, RS, BrazilUniv Fed Pelotas, Dept Restorat Dent, Div Prosthodont, Capao Do Leao, RS, BrazilUniv Fed Santa Maria, Fac Odontol, BR-97119900 Santa Maria, RS, BrazilUniv Est Paulista Julio de Mesquita Filho, Inst Sci &Technol, Sao Jose Dos Campos, SP, BrazilUniv Fed Santa Maria, Fac Mech Engn, BR-97119900 Santa Maria, RS, BrazilUniv Est Paulista Julio de Mesquita Filho, Inst Sci &Technol, Sao Jose Dos Campos, SP, BrazilCEPID/CDMF-FAPESP: 2013/07296-2Elsevier B.V.Universidade Federal de Sergipe (UFS)Univ Fed PelotasUniversidade Estadual Paulista (Unesp)Wandscher, Vinicius FelipeBergoli, Cesar DalmolinOliveira, Ariele Freitas deKaizer, Osvaldo BazzanSouto Borges, Alexandre Luiz [UNESP]Limberguer, Inacio da FontouraValandro, Luiz Felipe2015-10-22T06:26:00Z2015-10-22T06:26:00Z2015-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article69-77http://www.sciencedirect.com/science/article/pii/S0955221915000254Journal Of The Mechanical Behavior Of Biomedical Materials, v. 43, p. 69-77, 2015.1751-6161http://hdl.handle.net/11449/12966410.1016/j.jmbbm.2014.11.016WOS:0003495123000070000-0002-5707-7565Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of The Mechanical Behavior Of Biomedical Materials3.2390,958info:eu-repo/semantics/openAccess2021-10-23T22:04:31Zoai:repositorio.unesp.br:11449/129664Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:06:16.949585Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
title |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
spellingShingle |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters Wandscher, Vinicius Felipe Fiber post Fracture strength Mechanical cycling Finite element analysis Fractographic analysis |
title_short |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
title_full |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
title_fullStr |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
title_full_unstemmed |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
title_sort |
Fatigue surviving, fracture resistance, shear stress and finite element analysis of glass fiber posts with different diameters |
author |
Wandscher, Vinicius Felipe |
author_facet |
Wandscher, Vinicius Felipe Bergoli, Cesar Dalmolin Oliveira, Ariele Freitas de Kaizer, Osvaldo Bazzan Souto Borges, Alexandre Luiz [UNESP] Limberguer, Inacio da Fontoura Valandro, Luiz Felipe |
author_role |
author |
author2 |
Bergoli, Cesar Dalmolin Oliveira, Ariele Freitas de Kaizer, Osvaldo Bazzan Souto Borges, Alexandre Luiz [UNESP] Limberguer, Inacio da Fontoura Valandro, Luiz Felipe |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Sergipe (UFS) Univ Fed Pelotas Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Wandscher, Vinicius Felipe Bergoli, Cesar Dalmolin Oliveira, Ariele Freitas de Kaizer, Osvaldo Bazzan Souto Borges, Alexandre Luiz [UNESP] Limberguer, Inacio da Fontoura Valandro, Luiz Felipe |
dc.subject.por.fl_str_mv |
Fiber post Fracture strength Mechanical cycling Finite element analysis Fractographic analysis |
topic |
Fiber post Fracture strength Mechanical cycling Finite element analysis Fractographic analysis |
description |
This study evaluated the shear stress presented in glass fiber posts with parallel fiber (0) and different coronal diameters under fatigue, fracture resistance and PEA. 160 glass-fiber posts (N=160) with eight different coronal diameters were used (DT = double tapered, number of the post = coronal diameter and W=Wider - fiber post with coronal diameter wider than the conventional): DT1.4; DT1.8 W; DT1.6; DT2W; DT1.8; DT2.2 W; DT2; DT2.2. Eighty posts were submitted to mechanical cycling (3 x 10(6) cycles; inclination: 45 degrees; load: 50 N; frequency: 4 Hz; temperature: 37 degrees C) to assess the surviving under intermittent loading and other eighty posts were submitted to fracture resistance testing (resistance [N] and shear-stress [MPa] values were obtained). The eight posts types were 3D modeled (Rhinoceros 4.0) and the shear-stress (MPa) evaluated using FEA (Ansys 13.0). One-way ANOVA showed statistically differences to fracture resistance (DT2.2 W and DT2.2 showed higher values) and shear stress values (DT1.4 showed lower values). Only the DT1.4 fiber posts failed after mechanical cycling. FEA showed similar values of shear stress between the groups and these values were similar to those obtained by shear stress testing. The failure analysis showed that 95% of specimens failed by shear. Posts with parallel fiber (0 degrees) may suffer fractures when an oblique shear load is applied on the structure; except the thinner group, greater coronal diameters promoted the same shear stresses. (C) 2014 Elsevier Ltd. All rights reserved. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-22T06:26:00Z 2015-10-22T06:26:00Z 2015-03-01 |
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://www.sciencedirect.com/science/article/pii/S0955221915000254 Journal Of The Mechanical Behavior Of Biomedical Materials, v. 43, p. 69-77, 2015. 1751-6161 http://hdl.handle.net/11449/129664 10.1016/j.jmbbm.2014.11.016 WOS:000349512300007 0000-0002-5707-7565 |
url |
http://www.sciencedirect.com/science/article/pii/S0955221915000254 http://hdl.handle.net/11449/129664 |
identifier_str_mv |
Journal Of The Mechanical Behavior Of Biomedical Materials, v. 43, p. 69-77, 2015. 1751-6161 10.1016/j.jmbbm.2014.11.016 WOS:000349512300007 0000-0002-5707-7565 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of The Mechanical Behavior Of Biomedical Materials 3.239 0,958 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
69-77 |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science 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 |
|
_version_ |
1808128894919770112 |