Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis
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/10.1111/jopr.13460 http://hdl.handle.net/11449/230154 |
Resumo: | Purpose: To assess the effects of tilted external hexagon implants and splinted restorations in terms of stress distribution on the bone tissue, implants, and prosthetic screws, using three-dimensional finite element analysis. Materials and Methods: Six models were used to simulate a posterior maxilla bone block (type IV) from the first premolar to the first molar. Each model included three 4.1-mm-diameter external hexagon implants with varying inclinations (0°, 17°, and 30°) and crown designs (splinted and nonsplinted restorations). The forces applied were as follows: 400 N axially (50 N for each slope of the cusp) and 200 N obliquely (45° only on the buccal slope of the cusp). Stress distribution on the implants and prosthetic screw was evaluated using Von Mises stress, while the maximum principal stress was used to evaluate the stress distribution in the bone tissue. Results: The oblique load increased the stress on all the structures in all the models. Increased inclination of the implants resulted in higher stress concentration in the bone tissue, implants, and prosthetic screws. However, splinted restorations contributed to reduction of the stress for the oblique loading, mainly in the bone tissue and prosthetic screw of the first molar, as the stress was shared between the first and second premolar restorations. Conclusions: Tilted implants increased proportionally the stress on bone tissue and prosthetic screws of models. Additionally, splinting restorations reduced the stress concentration area in the simulated bone tissue, implants, and prosthetic screws in the first molar, as the stress was shared with the adjacent implants. |
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spelling |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element AnalysisPurpose: To assess the effects of tilted external hexagon implants and splinted restorations in terms of stress distribution on the bone tissue, implants, and prosthetic screws, using three-dimensional finite element analysis. Materials and Methods: Six models were used to simulate a posterior maxilla bone block (type IV) from the first premolar to the first molar. Each model included three 4.1-mm-diameter external hexagon implants with varying inclinations (0°, 17°, and 30°) and crown designs (splinted and nonsplinted restorations). The forces applied were as follows: 400 N axially (50 N for each slope of the cusp) and 200 N obliquely (45° only on the buccal slope of the cusp). Stress distribution on the implants and prosthetic screw was evaluated using Von Mises stress, while the maximum principal stress was used to evaluate the stress distribution in the bone tissue. Results: The oblique load increased the stress on all the structures in all the models. Increased inclination of the implants resulted in higher stress concentration in the bone tissue, implants, and prosthetic screws. However, splinted restorations contributed to reduction of the stress for the oblique loading, mainly in the bone tissue and prosthetic screw of the first molar, as the stress was shared between the first and second premolar restorations. Conclusions: Tilted implants increased proportionally the stress on bone tissue and prosthetic screws of models. Additionally, splinting restorations reduced the stress concentration area in the simulated bone tissue, implants, and prosthetic screws in the first molar, as the stress was shared with the adjacent implants.Alfenas Dental School Federal University of Alfenas, Minas GeraisDepartment of Dental Materials and Prosthodontics Araçatuba Dental School UNESP - Univ Estadual Paulista Araçatuba, Sao PauloDepartment of Dentistry Federal University of Juiz de Fora (UFJF-GV) Governador Valadares, Minas GeraisDepartment Prosthodontics Presidente Prudente Dental School University of the West of São Paulo (UNOESTE)Department of Health Sciences Sagrado Coração University (USC), Sao PauloRenato Archer's Information Technology Center Campinas, Sao PauloDepartment of Dental Materials and Prosthodontics Araçatuba Dental School UNESP - Univ Estadual Paulista Araçatuba, Sao PauloFederal University of AlfenasUniversidade Estadual Paulista (UNESP)Governador ValadaresUniversity of the West of São Paulo (UNOESTE)Sagrado Coração University (USC)Campinasde Faria Almeida, Daniel A.Verri, Fellippo R. [UNESP]Lemos, Cleidiel A. A.de Souza Batista, Victor E.Santiago Júnior, Joel. F.Rosa, Cleber D. D. R. D. [UNESP]Noritomi, Pedro Y.Pellizzer, Eduardo P. [UNESP]2022-04-29T08:38:11Z2022-04-29T08:38:11Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1111/jopr.13460Journal of Prosthodontics.1532-849X1059-941Xhttp://hdl.handle.net/11449/23015410.1111/jopr.134602-s2.0-85122152727Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Prosthodonticsinfo:eu-repo/semantics/openAccess2022-04-29T08:38:11Zoai:repositorio.unesp.br:11449/230154Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:38:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
title |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
spellingShingle |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis de Faria Almeida, Daniel A. |
title_short |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
title_full |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
title_fullStr |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
title_full_unstemmed |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
title_sort |
Effect of Splinting of Tilted External Hexagon Implants on 3-Unit Implant-Supported Prostheses in the Posterior Maxilla: A 3D Finite Element Analysis |
author |
de Faria Almeida, Daniel A. |
author_facet |
de Faria Almeida, Daniel A. Verri, Fellippo R. [UNESP] Lemos, Cleidiel A. A. de Souza Batista, Victor E. Santiago Júnior, Joel. F. Rosa, Cleber D. D. R. D. [UNESP] Noritomi, Pedro Y. Pellizzer, Eduardo P. [UNESP] |
author_role |
author |
author2 |
Verri, Fellippo R. [UNESP] Lemos, Cleidiel A. A. de Souza Batista, Victor E. Santiago Júnior, Joel. F. Rosa, Cleber D. D. R. D. [UNESP] Noritomi, Pedro Y. Pellizzer, Eduardo P. [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Federal University of Alfenas Universidade Estadual Paulista (UNESP) Governador Valadares University of the West of São Paulo (UNOESTE) Sagrado Coração University (USC) Campinas |
dc.contributor.author.fl_str_mv |
de Faria Almeida, Daniel A. Verri, Fellippo R. [UNESP] Lemos, Cleidiel A. A. de Souza Batista, Victor E. Santiago Júnior, Joel. F. Rosa, Cleber D. D. R. D. [UNESP] Noritomi, Pedro Y. Pellizzer, Eduardo P. [UNESP] |
description |
Purpose: To assess the effects of tilted external hexagon implants and splinted restorations in terms of stress distribution on the bone tissue, implants, and prosthetic screws, using three-dimensional finite element analysis. Materials and Methods: Six models were used to simulate a posterior maxilla bone block (type IV) from the first premolar to the first molar. Each model included three 4.1-mm-diameter external hexagon implants with varying inclinations (0°, 17°, and 30°) and crown designs (splinted and nonsplinted restorations). The forces applied were as follows: 400 N axially (50 N for each slope of the cusp) and 200 N obliquely (45° only on the buccal slope of the cusp). Stress distribution on the implants and prosthetic screw was evaluated using Von Mises stress, while the maximum principal stress was used to evaluate the stress distribution in the bone tissue. Results: The oblique load increased the stress on all the structures in all the models. Increased inclination of the implants resulted in higher stress concentration in the bone tissue, implants, and prosthetic screws. However, splinted restorations contributed to reduction of the stress for the oblique loading, mainly in the bone tissue and prosthetic screw of the first molar, as the stress was shared between the first and second premolar restorations. Conclusions: Tilted implants increased proportionally the stress on bone tissue and prosthetic screws of models. Additionally, splinting restorations reduced the stress concentration area in the simulated bone tissue, implants, and prosthetic screws in the first molar, as the stress was shared with the adjacent implants. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-29T08:38:11Z 2022-04-29T08:38:11Z |
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/10.1111/jopr.13460 Journal of Prosthodontics. 1532-849X 1059-941X http://hdl.handle.net/11449/230154 10.1111/jopr.13460 2-s2.0-85122152727 |
url |
http://dx.doi.org/10.1111/jopr.13460 http://hdl.handle.net/11449/230154 |
identifier_str_mv |
Journal of Prosthodontics. 1532-849X 1059-941X 10.1111/jopr.13460 2-s2.0-85122152727 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Prosthodontics |
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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1803046642564202496 |