Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses

Detalhes bibliográficos
Autor(a) principal: Geremia, Tomás
Data de Publicação: 2009
Outros Autores: Naconecy, Marcos Michelon, Cervieri, André, Mezzomo, Luís André, Shinkai, Rosemary Sadami Arai
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista odonto ciência (Online)
Texto Completo: https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4719
Resumo: Purpose: To assess the magnitude and distribution of axial forces and bending moments in abutments as a function of cantilever length and inclination of implants. Methods: Ten metallic bars simulated frameworks of fixed implant-supported prosthesis over two master models with five implants: one with all implants straight and parallel (n=5) and one with the two distal implants tilted (n=5). Strain gauges were fixed on abutments to measure deformation when a 50N-load was applied on the cantilever at 10, 15, and 20 mm-distance from the distal abutment. Deformation values were transformed into axial force and bending moment and analyzed by ANOVA and Tukey test (α = 5%). Results: Comparing 10 mm- to 20 mm-cantilever, there was an increase of approximately 50% for axial force and of 70% for saggital bending moment. On the abutment adjacent to the cantilever, the axial force in the inclined model was 70% lower than in the straight model, and bending moments did not vary. Conclusion: The results suggest that the inclination of distal implants does not have any deleterious biomechanical effect on abutments of the tested models and may reduce the cantilever effect on force magnitude.
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spelling Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prosthesesEfeito do cantilever e de implantes inclinados na força axial e momento fletor em próteses fixas implantossuportadasCantileverImplant-supported prosthesesStrain gaugesTilted implantsBiomechanicsimplant-supported prosthesisPurpose: To assess the magnitude and distribution of axial forces and bending moments in abutments as a function of cantilever length and inclination of implants. Methods: Ten metallic bars simulated frameworks of fixed implant-supported prosthesis over two master models with five implants: one with all implants straight and parallel (n=5) and one with the two distal implants tilted (n=5). Strain gauges were fixed on abutments to measure deformation when a 50N-load was applied on the cantilever at 10, 15, and 20 mm-distance from the distal abutment. Deformation values were transformed into axial force and bending moment and analyzed by ANOVA and Tukey test (α = 5%). Results: Comparing 10 mm- to 20 mm-cantilever, there was an increase of approximately 50% for axial force and of 70% for saggital bending moment. On the abutment adjacent to the cantilever, the axial force in the inclined model was 70% lower than in the straight model, and bending moments did not vary. Conclusion: The results suggest that the inclination of distal implants does not have any deleterious biomechanical effect on abutments of the tested models and may reduce the cantilever effect on force magnitude.Objetivo: Avaliar a magnitude e a distribuição de forças axiais e momentos fletores em pilares em função da extensão do cantilever e da inclinação dos implantes. Metodologia: Dez barras metálicas simularam infraestruturas de prótese fixa implantossuportada sobre dois modelos mestre com 5 implantes: um modelo com todos os implantes retos e paralelos (n=5) e um com os dois implantes distais inclinados (n=5). Extensômetros foram fixados nos pilares para medir sua deformação quando uma carga de 50N foi aplicada no cantilever a 10, 15 e 20 mm do implante distal. Os valores de deformação foram convertidos em força axial e momento fletor e analisados por ANOVA e teste de Tukey (α = 5%). Resultados: Comparando-se as distâncias de 10 e 20 mm, houve um aumento de aproximadamente 50% da força axial e de 70% do momento fletor sagital. No pilar adjacente ao cantilever, a força axial no modelo com implantes inclinados foi 70% menor que no modelo com implantes retos, e os momentos fletores não variaram. Conclusão: Os resultados sugerem que a inclinação dos implantes distais não promoveu nenhum efeito deletério sobre os pilares nos modelos testados e pode reduzir o efeito do cantilever na magnitude da força.EDIPUCRS - Editora Universitária da PUCRS2009-03-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articlein vitro; experimentalapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4719Revista Odonto Ciência; Vol. 24 No. 2 (2009); 145 - 150Revista Odonto Ciência; v. 24 n. 2 (2009); 145 - 1501980-65230102-9460reponame:Revista odonto ciência (Online)instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSenghttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4719/3990Geremia, TomásNaconecy, Marcos MichelonCervieri, AndréMezzomo, Luís AndréShinkai, Rosemary Sadami Araiinfo:eu-repo/semantics/openAccess2013-11-11T13:15:30Zoai:ojs.revistaseletronicas.pucrs.br:article/4719Revistahttps://revistaseletronicas.pucrs.br/ojs/index.php/foPRIhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/oai||odontociencia@pucrs.br1980-65230102-9460opendoar:2013-11-11T13:15:30Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false
dc.title.none.fl_str_mv Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
Efeito do cantilever e de implantes inclinados na força axial e momento fletor em próteses fixas implantossuportadas
title Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
spellingShingle Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
Geremia, Tomás
Cantilever
Implant-supported prostheses
Strain gauges
Tilted implants
Biomechanics
implant-supported prosthesis
title_short Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
title_full Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
title_fullStr Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
title_full_unstemmed Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
title_sort Effect of cantilever length and inclined implants on axial force and bending moment in implant-supported fixed prostheses
author Geremia, Tomás
author_facet Geremia, Tomás
Naconecy, Marcos Michelon
Cervieri, André
Mezzomo, Luís André
Shinkai, Rosemary Sadami Arai
author_role author
author2 Naconecy, Marcos Michelon
Cervieri, André
Mezzomo, Luís André
Shinkai, Rosemary Sadami Arai
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Geremia, Tomás
Naconecy, Marcos Michelon
Cervieri, André
Mezzomo, Luís André
Shinkai, Rosemary Sadami Arai
dc.subject.por.fl_str_mv Cantilever
Implant-supported prostheses
Strain gauges
Tilted implants
Biomechanics
implant-supported prosthesis
topic Cantilever
Implant-supported prostheses
Strain gauges
Tilted implants
Biomechanics
implant-supported prosthesis
description Purpose: To assess the magnitude and distribution of axial forces and bending moments in abutments as a function of cantilever length and inclination of implants. Methods: Ten metallic bars simulated frameworks of fixed implant-supported prosthesis over two master models with five implants: one with all implants straight and parallel (n=5) and one with the two distal implants tilted (n=5). Strain gauges were fixed on abutments to measure deformation when a 50N-load was applied on the cantilever at 10, 15, and 20 mm-distance from the distal abutment. Deformation values were transformed into axial force and bending moment and analyzed by ANOVA and Tukey test (α = 5%). Results: Comparing 10 mm- to 20 mm-cantilever, there was an increase of approximately 50% for axial force and of 70% for saggital bending moment. On the abutment adjacent to the cantilever, the axial force in the inclined model was 70% lower than in the straight model, and bending moments did not vary. Conclusion: The results suggest that the inclination of distal implants does not have any deleterious biomechanical effect on abutments of the tested models and may reduce the cantilever effect on force magnitude.
publishDate 2009
dc.date.none.fl_str_mv 2009-03-02
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
in vitro; experimental
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4719
url https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4719
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/4719/3990
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
publisher.none.fl_str_mv EDIPUCRS - Editora Universitária da PUCRS
dc.source.none.fl_str_mv Revista Odonto Ciência; Vol. 24 No. 2 (2009); 145 - 150
Revista Odonto Ciência; v. 24 n. 2 (2009); 145 - 150
1980-6523
0102-9460
reponame:Revista odonto ciência (Online)
instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron:PUC_RS
instname_str Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron_str PUC_RS
institution PUC_RS
reponame_str Revista odonto ciência (Online)
collection Revista odonto ciência (Online)
repository.name.fl_str_mv Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
repository.mail.fl_str_mv ||odontociencia@pucrs.br
_version_ 1754820874832183296

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