Finite element analysis and fracture resistance testing of a new intraradicular post
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1678-77572012000400007 http://hdl.handle.net/11449/226989 |
Resumo: | ObjectiveS: The objective of the present study was to evaluate a prefabricated intraradicular threaded pure titanium post, designed and developed at the São José dos Campos School of Dentistry - UNESP, Brazil. This new post was designed to minimize stresses observed with prefabricated post systems and to improve cost-benefits. Material and Methods: Fracture resistance testing of the post/core/root complex, fracture analysis by microscopy and stress analysis by the finite element method were used for post evaluation. The following four prefabricated metal post systems were analyzed: group 1, experimental post; group 2, modification of the experimental post; group 3, Flexi Post, and group 4, Para Post. For the analysis of fracture resistance, 40 bovine teeth were randomly assigned to the four groups (n=10) and used for the fabrication of test specimens simulating the situation in the mouth. The test specimens were subjected to compressive strength testing until fracture in an EMIC universal testing machine. After fracture of the test specimens, their roots were sectioned and analyzed by microscopy. For the finite element method, specimens of the fracture resistance test were simulated by computer modeling to determine the stress distribution pattern in the post systems studied. Results: The fracture test presented the following averages and standard deviation: G1 (45.63±8.77), G2 (49.98±7.08), G3 (43.84±5.52), G4 (47.61±7.23). Stress was homogenously distributed along the body of the intraradicular post in group 1, whereas high stress concentrations in certain regions were observed in the other groups. These stress concentrations in the body of the post induced the same stress concentration in root dentin. ConclusionS: The experimental post (original and modified versions) presented similar fracture resistance and better results in the stress analysis when compared with the commercial post systems tested (08/2008-PA/CEP). |
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Finite element analysis and fracture resistance testing of a new intraradicular postFinite element analysisPost and core techniqueStress fracturesObjectiveS: The objective of the present study was to evaluate a prefabricated intraradicular threaded pure titanium post, designed and developed at the São José dos Campos School of Dentistry - UNESP, Brazil. This new post was designed to minimize stresses observed with prefabricated post systems and to improve cost-benefits. Material and Methods: Fracture resistance testing of the post/core/root complex, fracture analysis by microscopy and stress analysis by the finite element method were used for post evaluation. The following four prefabricated metal post systems were analyzed: group 1, experimental post; group 2, modification of the experimental post; group 3, Flexi Post, and group 4, Para Post. For the analysis of fracture resistance, 40 bovine teeth were randomly assigned to the four groups (n=10) and used for the fabrication of test specimens simulating the situation in the mouth. The test specimens were subjected to compressive strength testing until fracture in an EMIC universal testing machine. After fracture of the test specimens, their roots were sectioned and analyzed by microscopy. For the finite element method, specimens of the fracture resistance test were simulated by computer modeling to determine the stress distribution pattern in the post systems studied. Results: The fracture test presented the following averages and standard deviation: G1 (45.63±8.77), G2 (49.98±7.08), G3 (43.84±5.52), G4 (47.61±7.23). Stress was homogenously distributed along the body of the intraradicular post in group 1, whereas high stress concentrations in certain regions were observed in the other groups. These stress concentrations in the body of the post induced the same stress concentration in root dentin. ConclusionS: The experimental post (original and modified versions) presented similar fracture resistance and better results in the stress analysis when compared with the commercial post systems tested (08/2008-PA/CEP).Department of Restorative Dentistry São José dos Campos Dental School Univ. Estadual Paulista - UNESP, R. Pedro de Toledo, 19, São José dos Campos, Guararema, SP 08900-000Department of Restorative Dentistry São José dos Campos Dental School Univ. Estadual Paulista - UNESP, São José dos Campos, SPDepartment of Social Dentistry São José dos Campos Dental School Univ. Estadual Paulista - UNESP, São José dos Campos, SPState University of Campinas (UNICAMP), Campinas, SPDepartment of Restorative Dentistry São José dos Campos Dental School Univ. Estadual Paulista - UNESP, R. Pedro de Toledo, 19, São José dos Campos, Guararema, SP 08900-000Department of Restorative Dentistry São José dos Campos Dental School Univ. Estadual Paulista - UNESP, São José dos Campos, SPDepartment of Social Dentistry São José dos Campos Dental School Univ. Estadual Paulista - UNESP, São José dos Campos, SPUniversidade Estadual Paulista (UNESP)Universidade Estadual de Campinas (UNICAMP)Yamamoto, Eron Toshio Colauto [UNESP]Pagani, Clovis [UNESP]da Silva, Eduardo Galera [UNESP]Noritomi, Pedro YoshitoUehara, André YugouKemmoku, Daniel Takanori2022-04-29T05:24:25Z2022-04-29T05:24:25Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article427-434http://dx.doi.org/10.1590/S1678-77572012000400007Journal of Applied Oral Science, v. 20, n. 4, p. 427-434, 2012.1678-77651678-7757http://hdl.handle.net/11449/22698910.1590/S1678-775720120004000072-s2.0-84867186966Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Applied Oral Scienceinfo:eu-repo/semantics/openAccess2022-04-29T05:24:25Zoai:repositorio.unesp.br:11449/226989Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T05:24:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Finite element analysis and fracture resistance testing of a new intraradicular post |
title |
Finite element analysis and fracture resistance testing of a new intraradicular post |
spellingShingle |
Finite element analysis and fracture resistance testing of a new intraradicular post Yamamoto, Eron Toshio Colauto [UNESP] Finite element analysis Post and core technique Stress fractures |
title_short |
Finite element analysis and fracture resistance testing of a new intraradicular post |
title_full |
Finite element analysis and fracture resistance testing of a new intraradicular post |
title_fullStr |
Finite element analysis and fracture resistance testing of a new intraradicular post |
title_full_unstemmed |
Finite element analysis and fracture resistance testing of a new intraradicular post |
title_sort |
Finite element analysis and fracture resistance testing of a new intraradicular post |
author |
Yamamoto, Eron Toshio Colauto [UNESP] |
author_facet |
Yamamoto, Eron Toshio Colauto [UNESP] Pagani, Clovis [UNESP] da Silva, Eduardo Galera [UNESP] Noritomi, Pedro Yoshito Uehara, André Yugou Kemmoku, Daniel Takanori |
author_role |
author |
author2 |
Pagani, Clovis [UNESP] da Silva, Eduardo Galera [UNESP] Noritomi, Pedro Yoshito Uehara, André Yugou Kemmoku, Daniel Takanori |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Yamamoto, Eron Toshio Colauto [UNESP] Pagani, Clovis [UNESP] da Silva, Eduardo Galera [UNESP] Noritomi, Pedro Yoshito Uehara, André Yugou Kemmoku, Daniel Takanori |
dc.subject.por.fl_str_mv |
Finite element analysis Post and core technique Stress fractures |
topic |
Finite element analysis Post and core technique Stress fractures |
description |
ObjectiveS: The objective of the present study was to evaluate a prefabricated intraradicular threaded pure titanium post, designed and developed at the São José dos Campos School of Dentistry - UNESP, Brazil. This new post was designed to minimize stresses observed with prefabricated post systems and to improve cost-benefits. Material and Methods: Fracture resistance testing of the post/core/root complex, fracture analysis by microscopy and stress analysis by the finite element method were used for post evaluation. The following four prefabricated metal post systems were analyzed: group 1, experimental post; group 2, modification of the experimental post; group 3, Flexi Post, and group 4, Para Post. For the analysis of fracture resistance, 40 bovine teeth were randomly assigned to the four groups (n=10) and used for the fabrication of test specimens simulating the situation in the mouth. The test specimens were subjected to compressive strength testing until fracture in an EMIC universal testing machine. After fracture of the test specimens, their roots were sectioned and analyzed by microscopy. For the finite element method, specimens of the fracture resistance test were simulated by computer modeling to determine the stress distribution pattern in the post systems studied. Results: The fracture test presented the following averages and standard deviation: G1 (45.63±8.77), G2 (49.98±7.08), G3 (43.84±5.52), G4 (47.61±7.23). Stress was homogenously distributed along the body of the intraradicular post in group 1, whereas high stress concentrations in certain regions were observed in the other groups. These stress concentrations in the body of the post induced the same stress concentration in root dentin. ConclusionS: The experimental post (original and modified versions) presented similar fracture resistance and better results in the stress analysis when compared with the commercial post systems tested (08/2008-PA/CEP). |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2022-04-29T05:24:25Z 2022-04-29T05:24:25Z |
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/10.1590/S1678-77572012000400007 Journal of Applied Oral Science, v. 20, n. 4, p. 427-434, 2012. 1678-7765 1678-7757 http://hdl.handle.net/11449/226989 10.1590/S1678-77572012000400007 2-s2.0-84867186966 |
url |
http://dx.doi.org/10.1590/S1678-77572012000400007 http://hdl.handle.net/11449/226989 |
identifier_str_mv |
Journal of Applied Oral Science, v. 20, n. 4, p. 427-434, 2012. 1678-7765 1678-7757 10.1590/S1678-77572012000400007 2-s2.0-84867186966 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Applied Oral Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
427-434 |
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 |
|
_version_ |
1799964751468429312 |