Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jbiomech.2013.02.008 http://hdl.handle.net/11449/75173 |
Resumo: | A finite element analysis was used to compare the effect of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible. Four models of an human mandible were constructed. In the OR (O'ring) group, the mandible was restored with an overdenture retained by four unsplinted implants with O'ring attachment; in the BC (bar-clip) -C and BC groups, the mandibles were restored with overdentures retained by four splinted implants with bar-clip anchor associated or not with two distally placed cantilevers, respectively; in the FD (fixed denture) group, the mandible was restored with a fixed full-arch four-implant-supported prosthesis. Models were supported by the masticatory muscles and temporomandibular joints. A 100-N oblique load was applied on the left first molar. Von Mises (σvM), maximum (σmax) and minimum (σmin) principal stresses (in MPa) analyses were obtained. BC-C group exhibited the highest stress values (σvM=398.8, σmax=580.5 and σmin=-455.2) while FD group showed the lowest one (σvM=128.9, σmax=185.9 and σmin=-172.1). Within overdenture groups, the use of unsplinted implants reduced the stress level in the implant/prosthetic components (59.4% for σvM, 66.2% for σmax and 57.7% for σmin versus BC-C group) and supporting tissues (maximum stress reduction of 72% and 79.5% for σmax, and 15.7% and 85.7% for σmin on the cortical and trabecular bones, respectively). Cortical bone exhibited greater stress concentration than the trabecular bone for all groups. The use of fixed implant dentures and removable dentures retained by unsplinted implants to rehabilitate edentulous mandible reduced the stresses in the periimplant bone tissue, mucosa and implant/prosthetic components. © 2013 Elsevier Ltd. |
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Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysisBiomechanicsDental ImplantsFinite element analysisFixed full-arch prosthesisOverdentureImplant-supported prosthesisMasticatory musclesPeri-implant bonesPrincipal stressTemporomandibular jointThree dimensional finite element analysisTrabecular bonesArchesBoneComputerized tomographyDental prosthesesFinite difference methodFinite element methodRestorationStress concentrationTissueProstheticsbone stresscompressive stresscomputer assisted tomographycontrolled studycortical bonedental abutmentdental retaineredentulousnessequipment designfinite element analysishumanmandible prosthesismandible reconstructionmechanical stressoverlay denturepriority journalprocess designremovable partial denturestress distibutionthree dimensional imagingtrabecular boneA finite element analysis was used to compare the effect of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible. Four models of an human mandible were constructed. In the OR (O'ring) group, the mandible was restored with an overdenture retained by four unsplinted implants with O'ring attachment; in the BC (bar-clip) -C and BC groups, the mandibles were restored with overdentures retained by four splinted implants with bar-clip anchor associated or not with two distally placed cantilevers, respectively; in the FD (fixed denture) group, the mandible was restored with a fixed full-arch four-implant-supported prosthesis. Models were supported by the masticatory muscles and temporomandibular joints. A 100-N oblique load was applied on the left first molar. Von Mises (σvM), maximum (σmax) and minimum (σmin) principal stresses (in MPa) analyses were obtained. BC-C group exhibited the highest stress values (σvM=398.8, σmax=580.5 and σmin=-455.2) while FD group showed the lowest one (σvM=128.9, σmax=185.9 and σmin=-172.1). Within overdenture groups, the use of unsplinted implants reduced the stress level in the implant/prosthetic components (59.4% for σvM, 66.2% for σmax and 57.7% for σmin versus BC-C group) and supporting tissues (maximum stress reduction of 72% and 79.5% for σmax, and 15.7% and 85.7% for σmin on the cortical and trabecular bones, respectively). Cortical bone exhibited greater stress concentration than the trabecular bone for all groups. The use of fixed implant dentures and removable dentures retained by unsplinted implants to rehabilitate edentulous mandible reduced the stresses in the periimplant bone tissue, mucosa and implant/prosthetic components. © 2013 Elsevier Ltd.Department of Dental Materials and Prosthodontics Araçatuba Dental School Univ Estadual Paulista (UNESP), Sao PauloSmarttech Company, Sao PauloDepartment of Prosthodontics and Periodontology Piracicaba Dental School State Univ of Campinas (UNICAMP), Sao PauloDepartment of Dental Materials and Prosthodontics Araçatuba Dental School Univ Estadual Paulista (UNESP), Sao PauloUniversidade Estadual Paulista (Unesp)Smarttech CompanyUniversidade Estadual de Campinas (UNICAMP)Barão, V. A R [UNESP]Delben, J. A. [UNESP]Lima, J.Cabral, T.Assunção, Wirley Goncalves [UNESP]2014-05-27T11:29:00Z2014-05-27T11:29:00Z2013-04-26info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1312-1320application/pdfhttp://dx.doi.org/10.1016/j.jbiomech.2013.02.008Journal of Biomechanics, v. 46, n. 7, p. 1312-1320, 2013.0021-92901873-2380http://hdl.handle.net/11449/7517310.1016/j.jbiomech.2013.02.008WOS:0003185838000142-s2.0-848763010002-s2.0-84876301000.pdf4438747643373395Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Biomechanics2.4311,147info:eu-repo/semantics/openAccess2023-12-31T06:23:20Zoai:repositorio.unesp.br:11449/75173Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:49:17.999644Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
title |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
spellingShingle |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis Barão, V. A R [UNESP] Biomechanics Dental Implants Finite element analysis Fixed full-arch prosthesis Overdenture Implant-supported prosthesis Masticatory muscles Peri-implant bones Principal stress Temporomandibular joint Three dimensional finite element analysis Trabecular bones Arches Bone Computerized tomography Dental prostheses Finite difference method Finite element method Restoration Stress concentration Tissue Prosthetics bone stress compressive stress computer assisted tomography controlled study cortical bone dental abutment dental retainer edentulousness equipment design finite element analysis human mandible prosthesis mandible reconstruction mechanical stress overlay denture priority journal process design removable partial denture stress distibution three dimensional imaging trabecular bone |
title_short |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
title_full |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
title_fullStr |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
title_full_unstemmed |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
title_sort |
Comparison of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible - A computed tomography-based three-dimensional finite element analysis |
author |
Barão, V. A R [UNESP] |
author_facet |
Barão, V. A R [UNESP] Delben, J. A. [UNESP] Lima, J. Cabral, T. Assunção, Wirley Goncalves [UNESP] |
author_role |
author |
author2 |
Delben, J. A. [UNESP] Lima, J. Cabral, T. Assunção, Wirley Goncalves [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Smarttech Company Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Barão, V. A R [UNESP] Delben, J. A. [UNESP] Lima, J. Cabral, T. Assunção, Wirley Goncalves [UNESP] |
dc.subject.por.fl_str_mv |
Biomechanics Dental Implants Finite element analysis Fixed full-arch prosthesis Overdenture Implant-supported prosthesis Masticatory muscles Peri-implant bones Principal stress Temporomandibular joint Three dimensional finite element analysis Trabecular bones Arches Bone Computerized tomography Dental prostheses Finite difference method Finite element method Restoration Stress concentration Tissue Prosthetics bone stress compressive stress computer assisted tomography controlled study cortical bone dental abutment dental retainer edentulousness equipment design finite element analysis human mandible prosthesis mandible reconstruction mechanical stress overlay denture priority journal process design removable partial denture stress distibution three dimensional imaging trabecular bone |
topic |
Biomechanics Dental Implants Finite element analysis Fixed full-arch prosthesis Overdenture Implant-supported prosthesis Masticatory muscles Peri-implant bones Principal stress Temporomandibular joint Three dimensional finite element analysis Trabecular bones Arches Bone Computerized tomography Dental prostheses Finite difference method Finite element method Restoration Stress concentration Tissue Prosthetics bone stress compressive stress computer assisted tomography controlled study cortical bone dental abutment dental retainer edentulousness equipment design finite element analysis human mandible prosthesis mandible reconstruction mechanical stress overlay denture priority journal process design removable partial denture stress distibution three dimensional imaging trabecular bone |
description |
A finite element analysis was used to compare the effect of different designs of implant-retained overdentures and fixed full-arch implant-supported prosthesis on stress distribution in edentulous mandible. Four models of an human mandible were constructed. In the OR (O'ring) group, the mandible was restored with an overdenture retained by four unsplinted implants with O'ring attachment; in the BC (bar-clip) -C and BC groups, the mandibles were restored with overdentures retained by four splinted implants with bar-clip anchor associated or not with two distally placed cantilevers, respectively; in the FD (fixed denture) group, the mandible was restored with a fixed full-arch four-implant-supported prosthesis. Models were supported by the masticatory muscles and temporomandibular joints. A 100-N oblique load was applied on the left first molar. Von Mises (σvM), maximum (σmax) and minimum (σmin) principal stresses (in MPa) analyses were obtained. BC-C group exhibited the highest stress values (σvM=398.8, σmax=580.5 and σmin=-455.2) while FD group showed the lowest one (σvM=128.9, σmax=185.9 and σmin=-172.1). Within overdenture groups, the use of unsplinted implants reduced the stress level in the implant/prosthetic components (59.4% for σvM, 66.2% for σmax and 57.7% for σmin versus BC-C group) and supporting tissues (maximum stress reduction of 72% and 79.5% for σmax, and 15.7% and 85.7% for σmin on the cortical and trabecular bones, respectively). Cortical bone exhibited greater stress concentration than the trabecular bone for all groups. The use of fixed implant dentures and removable dentures retained by unsplinted implants to rehabilitate edentulous mandible reduced the stresses in the periimplant bone tissue, mucosa and implant/prosthetic components. © 2013 Elsevier Ltd. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04-26 2014-05-27T11:29:00Z 2014-05-27T11:29:00Z |
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/10.1016/j.jbiomech.2013.02.008 Journal of Biomechanics, v. 46, n. 7, p. 1312-1320, 2013. 0021-9290 1873-2380 http://hdl.handle.net/11449/75173 10.1016/j.jbiomech.2013.02.008 WOS:000318583800014 2-s2.0-84876301000 2-s2.0-84876301000.pdf 4438747643373395 |
url |
http://dx.doi.org/10.1016/j.jbiomech.2013.02.008 http://hdl.handle.net/11449/75173 |
identifier_str_mv |
Journal of Biomechanics, v. 46, n. 7, p. 1312-1320, 2013. 0021-9290 1873-2380 10.1016/j.jbiomech.2013.02.008 WOS:000318583800014 2-s2.0-84876301000 2-s2.0-84876301000.pdf 4438747643373395 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Biomechanics 2.431 1,147 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1312-1320 application/pdf |
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_ |
1808129361651433472 |