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Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis

The loss of dental structure caused by endodontic treatment is responsible for a decrease in tooth resistance, which increases susceptibility to fracture. Therefore, it is important that minimally invasive treatments be performed to preserve the dental structure and increase the resistance to fractu...

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Autores principales: Borges, Alexandre Luiz Souto, Grangeiro, Manassés Tercio Vieira, de Andrade, Guilherme Schmitt, de Melo, Renata Marques, Baroudi, Kusai, Silva-Concilio, Laís Regiane, Tribst, João Paulo Mendes
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347937/
https://www.ncbi.nlm.nih.gov/pubmed/34361443
http://dx.doi.org/10.3390/ma14154249
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author Borges, Alexandre Luiz Souto
Grangeiro, Manassés Tercio Vieira
de Andrade, Guilherme Schmitt
de Melo, Renata Marques
Baroudi, Kusai
Silva-Concilio, Laís Regiane
Tribst, João Paulo Mendes
author_facet Borges, Alexandre Luiz Souto
Grangeiro, Manassés Tercio Vieira
de Andrade, Guilherme Schmitt
de Melo, Renata Marques
Baroudi, Kusai
Silva-Concilio, Laís Regiane
Tribst, João Paulo Mendes
author_sort Borges, Alexandre Luiz Souto
collection PubMed
description The loss of dental structure caused by endodontic treatment is responsible for a decrease in tooth resistance, which increases susceptibility to fracture. Therefore, it is important that minimally invasive treatments be performed to preserve the dental structure and increase the resistance to fracture of endodontically treated posterior teeth. To evaluate under axial loads, using the finite element method, the stress distribution in endodontically treated molars restored with both transfixed or vertical glass fiber posts (GFP) and resin composite. An endodontically treated molar 3D-model was analyzed using finite element analyses under four different conditions, class II resin composite (G1, control model), vertical glass fiber post (G2), transfixed glass fiber posts (G3) and vertical and transfixed glass fiber posts (G4). Ideal contacts were considered between restoration/resin composite and resin composite/tooth. An axial load (300 N) was applied to the occlusal surface. The resulting tensile stresses were calculated for the enamel and dentin tissue from five different viewports (occlusal, buccal, palatal, mesial and distal views). According to the stress maps, similar stress trends were observed, regardless of the glass fiber post treatment. In addition, for the G1 model (without GFP), a high-stress magnitude can be noticed in the proximal faces of enamel (7.7 to 14 MPa) and dentin (2.1 to 3.3 MPa) tissue. The use of transfixed glass fiber post is not indicated to reduce the stresses, under axial loads, in both enamel and dentin tissue in endodontically treated molar with a class II cavity.
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spelling pubmed-83479372021-08-08 Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis Borges, Alexandre Luiz Souto Grangeiro, Manassés Tercio Vieira de Andrade, Guilherme Schmitt de Melo, Renata Marques Baroudi, Kusai Silva-Concilio, Laís Regiane Tribst, João Paulo Mendes Materials (Basel) Communication The loss of dental structure caused by endodontic treatment is responsible for a decrease in tooth resistance, which increases susceptibility to fracture. Therefore, it is important that minimally invasive treatments be performed to preserve the dental structure and increase the resistance to fracture of endodontically treated posterior teeth. To evaluate under axial loads, using the finite element method, the stress distribution in endodontically treated molars restored with both transfixed or vertical glass fiber posts (GFP) and resin composite. An endodontically treated molar 3D-model was analyzed using finite element analyses under four different conditions, class II resin composite (G1, control model), vertical glass fiber post (G2), transfixed glass fiber posts (G3) and vertical and transfixed glass fiber posts (G4). Ideal contacts were considered between restoration/resin composite and resin composite/tooth. An axial load (300 N) was applied to the occlusal surface. The resulting tensile stresses were calculated for the enamel and dentin tissue from five different viewports (occlusal, buccal, palatal, mesial and distal views). According to the stress maps, similar stress trends were observed, regardless of the glass fiber post treatment. In addition, for the G1 model (without GFP), a high-stress magnitude can be noticed in the proximal faces of enamel (7.7 to 14 MPa) and dentin (2.1 to 3.3 MPa) tissue. The use of transfixed glass fiber post is not indicated to reduce the stresses, under axial loads, in both enamel and dentin tissue in endodontically treated molar with a class II cavity. MDPI 2021-07-29 /pmc/articles/PMC8347937/ /pubmed/34361443 http://dx.doi.org/10.3390/ma14154249 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Borges, Alexandre Luiz Souto
Grangeiro, Manassés Tercio Vieira
de Andrade, Guilherme Schmitt
de Melo, Renata Marques
Baroudi, Kusai
Silva-Concilio, Laís Regiane
Tribst, João Paulo Mendes
Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis
title Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis
title_full Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis
title_fullStr Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis
title_full_unstemmed Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis
title_short Stress Concentration of Endodontically Treated Molars Restored with Transfixed Glass Fiber Post: 3D-Finite Element Analysis
title_sort stress concentration of endodontically treated molars restored with transfixed glass fiber post: 3d-finite element analysis
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347937/
https://www.ncbi.nlm.nih.gov/pubmed/34361443
http://dx.doi.org/10.3390/ma14154249
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