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Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study

The goal of this study was to evaluate the stress distribution in an endocrown restoration according to different provisional restorative materials. An endodontically treated maxillary molar model was selected for conducting the finite element analysis (FEA), with a determined amount of dental remna...

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Autores principales: Tribst, João Paulo Mendes, Borges, Alexandre Luiz Souto, Silva-Concílio, Laís Regiane, Bottino, Marco Antonio, Özcan, Mutlu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7866804/
https://www.ncbi.nlm.nih.gov/pubmed/33572533
http://dx.doi.org/10.3390/ma14030649
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author Tribst, João Paulo Mendes
Borges, Alexandre Luiz Souto
Silva-Concílio, Laís Regiane
Bottino, Marco Antonio
Özcan, Mutlu
author_facet Tribst, João Paulo Mendes
Borges, Alexandre Luiz Souto
Silva-Concílio, Laís Regiane
Bottino, Marco Antonio
Özcan, Mutlu
author_sort Tribst, João Paulo Mendes
collection PubMed
description The goal of this study was to evaluate the stress distribution in an endocrown restoration according to different provisional restorative materials. An endodontically treated maxillary molar model was selected for conducting the finite element analysis (FEA), with a determined amount of dental remnant of 1.5 mm. The model was imported to the analysis software (ANSYS 19.2, ANSYS Inc., Houston, TX, USA) in STEP format. All contacts were considered perfectly bonded. The mechanical properties of each structure were considered isotropic, linear, elastic, and homogeneous. Three different provisional restorative materials were simulated (acrylic resin, bis-acrylic resin, and resin composite). An axial load (300 N) was applied at the occlusal surface in the center of the restoration. Results were determined by colorimetric stress maps of maximum principal stress, maximum shear stress, and total deformation. The different materials influenced the stress distribution for all structures; the higher the material’s elastic modulus, the lower the stress magnitude on the cement layer. In the present study, all provisional restorative materials showed similar stress patterns in the endocrown and on the cement layer however, with different magnitude. Based on this study limitation, the use of resin composite to manufacture provisional endocrowns is suggested as a promising material to reduce the stresses in the cement layer and in the dental tissue surfaces.
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spelling pubmed-78668042021-02-07 Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study Tribst, João Paulo Mendes Borges, Alexandre Luiz Souto Silva-Concílio, Laís Regiane Bottino, Marco Antonio Özcan, Mutlu Materials (Basel) Article The goal of this study was to evaluate the stress distribution in an endocrown restoration according to different provisional restorative materials. An endodontically treated maxillary molar model was selected for conducting the finite element analysis (FEA), with a determined amount of dental remnant of 1.5 mm. The model was imported to the analysis software (ANSYS 19.2, ANSYS Inc., Houston, TX, USA) in STEP format. All contacts were considered perfectly bonded. The mechanical properties of each structure were considered isotropic, linear, elastic, and homogeneous. Three different provisional restorative materials were simulated (acrylic resin, bis-acrylic resin, and resin composite). An axial load (300 N) was applied at the occlusal surface in the center of the restoration. Results were determined by colorimetric stress maps of maximum principal stress, maximum shear stress, and total deformation. The different materials influenced the stress distribution for all structures; the higher the material’s elastic modulus, the lower the stress magnitude on the cement layer. In the present study, all provisional restorative materials showed similar stress patterns in the endocrown and on the cement layer however, with different magnitude. Based on this study limitation, the use of resin composite to manufacture provisional endocrowns is suggested as a promising material to reduce the stresses in the cement layer and in the dental tissue surfaces. MDPI 2021-01-31 /pmc/articles/PMC7866804/ /pubmed/33572533 http://dx.doi.org/10.3390/ma14030649 Text en © 2021 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tribst, João Paulo Mendes
Borges, Alexandre Luiz Souto
Silva-Concílio, Laís Regiane
Bottino, Marco Antonio
Özcan, Mutlu
Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study
title Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study
title_full Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study
title_fullStr Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study
title_full_unstemmed Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study
title_short Effect of Restorative Material on Mechanical Response of Provisional Endocrowns: A 3D—FEA Study
title_sort effect of restorative material on mechanical response of provisional endocrowns: a 3d—fea study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7866804/
https://www.ncbi.nlm.nih.gov/pubmed/33572533
http://dx.doi.org/10.3390/ma14030649
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