Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla

Detalhes bibliográficos
Autor(a) principal: Corrêa, Cássia Bellotto [UNESP]
Data de Publicação: 2014
Outros Autores: Margonar, Rogério [UNESP], Noritomi, Pedro Yoshito [UNESP], Vaz, Luis Geraldo [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.prosdent.2013.06.019
http://hdl.handle.net/11449/171513
Resumo: Statement of problem In dental rehabilitations that involve implants, the number of implants is sometimes smaller than the number of lost teeth. This fact can affect the biomechanical behavior and success of the implants. Purpose The purpose of this study was to investigate the mechanical behavior of different implant positions in the rehabilitation of the anterior maxilla. Material and methods Three-dimensional models of the maxilla were created based on computed tomography images for 3 different anterior prosthetic rehabilitations. In group IL, the implants were placed in the lateral incisor positions with pontics in the central incisor positions; in group IC, the implants were in the central incisor positions with cantilevers in the lateral incisor positions; and, in group ILIC, one implant was in a lateral incisor position and one was in a central incisor position, with a pontic and a cantilever in the remaining positions. A 150 N load was distributed and applied at the center of the palatal surface of each tooth at a 45-degree angle to the long axis of the tooth. The resulting stress-strain distribution was analyzed for each group. Results The lowest displacement of the prosthetic structure was observed in group IC, although the same group exhibited the largest displacement of the bone tissue. In the bone tissue, the von Mises stress was mainly observed in the cortical bone in all groups. The maximum value of the von Mises stress shown in the cortical tissue was 35 MPa in the implant that neighbors the cantilever in group ILIC. The maximum von Mises stress in the trabecular bone was 3.5 MPa. Conclusion The prosthetic configuration of group IC limited the displacement of the prosthetic structure but led to greater displacement of the bone structure. The use of a cantilever increased the stress concentration in the implant and in the bone structure adjacent to the cantilever under the conditions studied here.
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spelling Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxillaStatement of problem In dental rehabilitations that involve implants, the number of implants is sometimes smaller than the number of lost teeth. This fact can affect the biomechanical behavior and success of the implants. Purpose The purpose of this study was to investigate the mechanical behavior of different implant positions in the rehabilitation of the anterior maxilla. Material and methods Three-dimensional models of the maxilla were created based on computed tomography images for 3 different anterior prosthetic rehabilitations. In group IL, the implants were placed in the lateral incisor positions with pontics in the central incisor positions; in group IC, the implants were in the central incisor positions with cantilevers in the lateral incisor positions; and, in group ILIC, one implant was in a lateral incisor position and one was in a central incisor position, with a pontic and a cantilever in the remaining positions. A 150 N load was distributed and applied at the center of the palatal surface of each tooth at a 45-degree angle to the long axis of the tooth. The resulting stress-strain distribution was analyzed for each group. Results The lowest displacement of the prosthetic structure was observed in group IC, although the same group exhibited the largest displacement of the bone tissue. In the bone tissue, the von Mises stress was mainly observed in the cortical bone in all groups. The maximum value of the von Mises stress shown in the cortical tissue was 35 MPa in the implant that neighbors the cantilever in group ILIC. The maximum von Mises stress in the trabecular bone was 3.5 MPa. Conclusion The prosthetic configuration of group IC limited the displacement of the prosthetic structure but led to greater displacement of the bone structure. The use of a cantilever increased the stress concentration in the implant and in the bone structure adjacent to the cantilever under the conditions studied here.Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University (UNESP), SPDepartment of Health Sciences, Implantology Postgraduation Course, São Paulo State University (UNESP), SPRenato Archer Center of Information Technology, São Paulo State University (UNESP), SPDepartment of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, São Paulo State University (UNESP), SPDepartment of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University (UNESP), SPDepartment of Health Sciences, Implantology Postgraduation Course, São Paulo State University (UNESP), SPRenato Archer Center of Information Technology, São Paulo State University (UNESP), SPDepartment of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, São Paulo State University (UNESP), SPUniversidade Estadual Paulista (Unesp)Corrêa, Cássia Bellotto [UNESP]Margonar, Rogério [UNESP]Noritomi, Pedro Yoshito [UNESP]Vaz, Luis Geraldo [UNESP]2018-12-11T16:55:38Z2018-12-11T16:55:38Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article301-309application/pdfhttp://dx.doi.org/10.1016/j.prosdent.2013.06.019Journal of Prosthetic Dentistry, v. 111, n. 4, p. 301-309, 2014.0022-3913http://hdl.handle.net/11449/17151310.1016/j.prosdent.2013.06.0192-s2.0-848971448942-s2.0-84897144894.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Prosthetic Dentistry1,087info:eu-repo/semantics/openAccess2024-09-27T14:57:25Zoai:repositorio.unesp.br:11449/171513Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-27T14:57:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
title Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
spellingShingle Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
Corrêa, Cássia Bellotto [UNESP]
title_short Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
title_full Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
title_fullStr Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
title_full_unstemmed Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
title_sort Mechanical behavior of dental implants in different positions in the rehabilitation of the anterior maxilla
author Corrêa, Cássia Bellotto [UNESP]
author_facet Corrêa, Cássia Bellotto [UNESP]
Margonar, Rogério [UNESP]
Noritomi, Pedro Yoshito [UNESP]
Vaz, Luis Geraldo [UNESP]
author_role author
author2 Margonar, Rogério [UNESP]
Noritomi, Pedro Yoshito [UNESP]
Vaz, Luis Geraldo [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Corrêa, Cássia Bellotto [UNESP]
Margonar, Rogério [UNESP]
Noritomi, Pedro Yoshito [UNESP]
Vaz, Luis Geraldo [UNESP]
description Statement of problem In dental rehabilitations that involve implants, the number of implants is sometimes smaller than the number of lost teeth. This fact can affect the biomechanical behavior and success of the implants. Purpose The purpose of this study was to investigate the mechanical behavior of different implant positions in the rehabilitation of the anterior maxilla. Material and methods Three-dimensional models of the maxilla were created based on computed tomography images for 3 different anterior prosthetic rehabilitations. In group IL, the implants were placed in the lateral incisor positions with pontics in the central incisor positions; in group IC, the implants were in the central incisor positions with cantilevers in the lateral incisor positions; and, in group ILIC, one implant was in a lateral incisor position and one was in a central incisor position, with a pontic and a cantilever in the remaining positions. A 150 N load was distributed and applied at the center of the palatal surface of each tooth at a 45-degree angle to the long axis of the tooth. The resulting stress-strain distribution was analyzed for each group. Results The lowest displacement of the prosthetic structure was observed in group IC, although the same group exhibited the largest displacement of the bone tissue. In the bone tissue, the von Mises stress was mainly observed in the cortical bone in all groups. The maximum value of the von Mises stress shown in the cortical tissue was 35 MPa in the implant that neighbors the cantilever in group ILIC. The maximum von Mises stress in the trabecular bone was 3.5 MPa. Conclusion The prosthetic configuration of group IC limited the displacement of the prosthetic structure but led to greater displacement of the bone structure. The use of a cantilever increased the stress concentration in the implant and in the bone structure adjacent to the cantilever under the conditions studied here.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
2018-12-11T16:55:38Z
2018-12-11T16:55:38Z
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.prosdent.2013.06.019
Journal of Prosthetic Dentistry, v. 111, n. 4, p. 301-309, 2014.
0022-3913
http://hdl.handle.net/11449/171513
10.1016/j.prosdent.2013.06.019
2-s2.0-84897144894
2-s2.0-84897144894.pdf
url http://dx.doi.org/10.1016/j.prosdent.2013.06.019
http://hdl.handle.net/11449/171513
identifier_str_mv Journal of Prosthetic Dentistry, v. 111, n. 4, p. 301-309, 2014.
0022-3913
10.1016/j.prosdent.2013.06.019
2-s2.0-84897144894
2-s2.0-84897144894.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Prosthetic Dentistry
1,087
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 301-309
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 repositoriounesp@unesp.br
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