Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants
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://hdl.handle.net/11449/227081 |
Resumo: | Purpose: The aim of this study was to assess the contributions of some prosthetic parameters such as crownto- implant (C/I) ratio, retention system, restorative material, and occlusal loading on stress concentrations within a single posterior crown supported by a short implant. Materials and Methods: Computer-aided design software was used to create 32 finite element models of an atrophic posterior partially edentulous mandible with a single external-hexagon implant (5 mm wide × 7 mm long) in the first molar region. Finite element analysis software with a convergence analysis of 5% to mesh refinement was used to evaluate the effects of C/I ratio (1:1; 1.5:1; 2:1, or 2.5:1), prosthetic retention system (cemented or screwed), and restorative material (metal-ceramic or all ceramic). The crowns were loaded with simulated normal or traumatic occlusal forces. The maximum principal stress (smax) for cortical and cancellous bone and von Mises stress (svM) for the implant and abutment screw were computed and analyzed. The percent contribution of each variable to the stress concentration was calculated from the sum of squares analysis. Results: Traumatic occlusion and a high C/I ratio increased stress concentrations. The C/I ratio was responsible for 11.45% of the total stress in the cortical bone, whereas occlusal loading contributed 70.92% to the total stress in the implant. The retention system contributed 0.91% of the total stress in the cortical bone. The restorative material was responsible for only 0.09% of the total stress in the cancellous bone. Conclusion: Occlusal loading was the most important stress concentration factor in the finite element model of a single posterior crown supported by a short implant. © 2012 by Quintessence Publishing Co Inc. |
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Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implantsAlveolar bone atrophyDental implantFinite element analysisPurpose: The aim of this study was to assess the contributions of some prosthetic parameters such as crownto- implant (C/I) ratio, retention system, restorative material, and occlusal loading on stress concentrations within a single posterior crown supported by a short implant. Materials and Methods: Computer-aided design software was used to create 32 finite element models of an atrophic posterior partially edentulous mandible with a single external-hexagon implant (5 mm wide × 7 mm long) in the first molar region. Finite element analysis software with a convergence analysis of 5% to mesh refinement was used to evaluate the effects of C/I ratio (1:1; 1.5:1; 2:1, or 2.5:1), prosthetic retention system (cemented or screwed), and restorative material (metal-ceramic or all ceramic). The crowns were loaded with simulated normal or traumatic occlusal forces. The maximum principal stress (smax) for cortical and cancellous bone and von Mises stress (svM) for the implant and abutment screw were computed and analyzed. The percent contribution of each variable to the stress concentration was calculated from the sum of squares analysis. Results: Traumatic occlusion and a high C/I ratio increased stress concentrations. The C/I ratio was responsible for 11.45% of the total stress in the cortical bone, whereas occlusal loading contributed 70.92% to the total stress in the implant. The retention system contributed 0.91% of the total stress in the cortical bone. The restorative material was responsible for only 0.09% of the total stress in the cancellous bone. Conclusion: Occlusal loading was the most important stress concentration factor in the finite element model of a single posterior crown supported by a short implant. © 2012 by Quintessence Publishing Co Inc.Department of Prosthodontics and Periodontology Piracicaba Dental School State University of Campinas - UNICAMP, Piracicaba, São PauloDepartment of Dental Materials and Prosthodontics Araçatuba Dental School São Paulo State University - UNESP, São PauloDepartment of Dental Materials and Prosthodontics Araçatuba Dental School São Paulo State University - UNESP, São PauloUniversidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)Sotto-Maior, Bruno SallesSenna, Plinio MendesDa Silva, Wander JoséRocha, Eduardo Passos [UNESP]Del Bel Cury, Altair Antoninha2022-04-29T06:37:17Z2022-04-29T06:37:17Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlee13-e18International Journal of Oral and Maxillofacial Implants, v. 27, n. 3, p. e13-e18, 2012.0882-2786http://hdl.handle.net/11449/2270812-s2.0-84871679219Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Oral and Maxillofacial Implantsinfo:eu-repo/semantics/openAccess2022-04-29T06:37:17Zoai:repositorio.unesp.br:11449/227081Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T06:37:17Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
title |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
spellingShingle |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants Sotto-Maior, Bruno Salles Alveolar bone atrophy Dental implant Finite element analysis |
title_short |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
title_full |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
title_fullStr |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
title_full_unstemmed |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
title_sort |
Influence of crown-to-implant ratio, retention system, restorative material, and occlusal loading on stress concentrations in single short implants |
author |
Sotto-Maior, Bruno Salles |
author_facet |
Sotto-Maior, Bruno Salles Senna, Plinio Mendes Da Silva, Wander José Rocha, Eduardo Passos [UNESP] Del Bel Cury, Altair Antoninha |
author_role |
author |
author2 |
Senna, Plinio Mendes Da Silva, Wander José Rocha, Eduardo Passos [UNESP] Del Bel Cury, Altair Antoninha |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Sotto-Maior, Bruno Salles Senna, Plinio Mendes Da Silva, Wander José Rocha, Eduardo Passos [UNESP] Del Bel Cury, Altair Antoninha |
dc.subject.por.fl_str_mv |
Alveolar bone atrophy Dental implant Finite element analysis |
topic |
Alveolar bone atrophy Dental implant Finite element analysis |
description |
Purpose: The aim of this study was to assess the contributions of some prosthetic parameters such as crownto- implant (C/I) ratio, retention system, restorative material, and occlusal loading on stress concentrations within a single posterior crown supported by a short implant. Materials and Methods: Computer-aided design software was used to create 32 finite element models of an atrophic posterior partially edentulous mandible with a single external-hexagon implant (5 mm wide × 7 mm long) in the first molar region. Finite element analysis software with a convergence analysis of 5% to mesh refinement was used to evaluate the effects of C/I ratio (1:1; 1.5:1; 2:1, or 2.5:1), prosthetic retention system (cemented or screwed), and restorative material (metal-ceramic or all ceramic). The crowns were loaded with simulated normal or traumatic occlusal forces. The maximum principal stress (smax) for cortical and cancellous bone and von Mises stress (svM) for the implant and abutment screw were computed and analyzed. The percent contribution of each variable to the stress concentration was calculated from the sum of squares analysis. Results: Traumatic occlusion and a high C/I ratio increased stress concentrations. The C/I ratio was responsible for 11.45% of the total stress in the cortical bone, whereas occlusal loading contributed 70.92% to the total stress in the implant. The retention system contributed 0.91% of the total stress in the cortical bone. The restorative material was responsible for only 0.09% of the total stress in the cancellous bone. Conclusion: Occlusal loading was the most important stress concentration factor in the finite element model of a single posterior crown supported by a short implant. © 2012 by Quintessence Publishing Co Inc. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2022-04-29T06:37:17Z 2022-04-29T06:37:17Z |
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 |
International Journal of Oral and Maxillofacial Implants, v. 27, n. 3, p. e13-e18, 2012. 0882-2786 http://hdl.handle.net/11449/227081 2-s2.0-84871679219 |
identifier_str_mv |
International Journal of Oral and Maxillofacial Implants, v. 27, n. 3, p. e13-e18, 2012. 0882-2786 2-s2.0-84871679219 |
url |
http://hdl.handle.net/11449/227081 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Oral and Maxillofacial Implants |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
e13-e18 |
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_ |
1797790429310091264 |