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Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study

OBJECTIVES: The aim of this in vitro study was to evaluate the stress distribution on three implant models with narrow and extra-narrow diameters using the finite element method (FEA). MATERIALS AND METHODS: Dental implants of extra-narrow diameter of 2.5 mm for a one-piece implant (group G1), a nar...

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Autores principales: Barbosa, Fabricia Teixeira, Zanatta, Luiz Carlos Silveira, de Souza Rendohl, Edélcio, Gehrke, Sergio Alexandre
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7861395/
https://www.ncbi.nlm.nih.gov/pubmed/33539392
http://dx.doi.org/10.1371/journal.pone.0245800
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author Barbosa, Fabricia Teixeira
Zanatta, Luiz Carlos Silveira
de Souza Rendohl, Edélcio
Gehrke, Sergio Alexandre
author_facet Barbosa, Fabricia Teixeira
Zanatta, Luiz Carlos Silveira
de Souza Rendohl, Edélcio
Gehrke, Sergio Alexandre
author_sort Barbosa, Fabricia Teixeira
collection PubMed
description OBJECTIVES: The aim of this in vitro study was to evaluate the stress distribution on three implant models with narrow and extra-narrow diameters using the finite element method (FEA). MATERIALS AND METHODS: Dental implants of extra-narrow diameter of 2.5 mm for a one-piece implant (group G1), a narrow diameter of 3.0 mm for a one-piece implant (group G2) and a narrow diameter of 3.5 mm for a two-piece implant with a Morse taper connection (group G3). A three-dimensional model was designed with cortical and cancellous bone, a crown and an implant/abutment set of each group. Axial and angled (30°) loads of 150 N was applied. The equivalent von Mises stress was used for the implants and peri-implant bone plus the Mohr-Coulomb analysis to confirm the data of the peri-implant bone. RESULTS: In the axial load, the maximum stress value of the cortical bone for the group G1 was 22.35% higher than that the group G2 and 321.23% than the group G3. Whereas in angled load, the groups G1 and G2 showing a similar value (# 3.5%) and a highest difference for the group G3 (391.8%). In the implant structure, the group G1 showed a value of 2188MPa, 93.6% higher than the limit. CONCLUSIONS: The results of this study show that the extra-narrow one-piece implant should be used with great caution, especially in areas of non-axial loads, whereas the one- and two-piece narrow-diameter implants show adequate behavior in both directions of the applied load.
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spelling pubmed-78613952021-02-12 Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study Barbosa, Fabricia Teixeira Zanatta, Luiz Carlos Silveira de Souza Rendohl, Edélcio Gehrke, Sergio Alexandre PLoS One Research Article OBJECTIVES: The aim of this in vitro study was to evaluate the stress distribution on three implant models with narrow and extra-narrow diameters using the finite element method (FEA). MATERIALS AND METHODS: Dental implants of extra-narrow diameter of 2.5 mm for a one-piece implant (group G1), a narrow diameter of 3.0 mm for a one-piece implant (group G2) and a narrow diameter of 3.5 mm for a two-piece implant with a Morse taper connection (group G3). A three-dimensional model was designed with cortical and cancellous bone, a crown and an implant/abutment set of each group. Axial and angled (30°) loads of 150 N was applied. The equivalent von Mises stress was used for the implants and peri-implant bone plus the Mohr-Coulomb analysis to confirm the data of the peri-implant bone. RESULTS: In the axial load, the maximum stress value of the cortical bone for the group G1 was 22.35% higher than that the group G2 and 321.23% than the group G3. Whereas in angled load, the groups G1 and G2 showing a similar value (# 3.5%) and a highest difference for the group G3 (391.8%). In the implant structure, the group G1 showed a value of 2188MPa, 93.6% higher than the limit. CONCLUSIONS: The results of this study show that the extra-narrow one-piece implant should be used with great caution, especially in areas of non-axial loads, whereas the one- and two-piece narrow-diameter implants show adequate behavior in both directions of the applied load. Public Library of Science 2021-02-04 /pmc/articles/PMC7861395/ /pubmed/33539392 http://dx.doi.org/10.1371/journal.pone.0245800 Text en © 2021 Barbosa et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Barbosa, Fabricia Teixeira
Zanatta, Luiz Carlos Silveira
de Souza Rendohl, Edélcio
Gehrke, Sergio Alexandre
Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study
title Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study
title_full Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study
title_fullStr Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study
title_full_unstemmed Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study
title_short Comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: A finite element study
title_sort comparative analysis of stress distribution in one-piece and two-piece implants with narrow and extra-narrow diameters: a finite element study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7861395/
https://www.ncbi.nlm.nih.gov/pubmed/33539392
http://dx.doi.org/10.1371/journal.pone.0245800
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