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Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA

The aim of this study was to evaluate the effect of biologically oriented preparation technique on the stress concentration of endodontically treated upper central incisors restored with zirconia crown (yttria-stabilized zirconia polycrystalline ceramic) through finite element analysis (FEA). Four m...

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Autores principales: Sichi, Luigi Giovanni Bernardo, Pierre, Fernanda Zapater, Arcila, Laura Viviana Calvache, de Andrade, Guilherme Schmitt, Tribst, João Paulo Mendes, Ausiello, Pietro, di Lauro, Alessandro Espedito, Borges, Alexandre Luiz Souto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538003/
https://www.ncbi.nlm.nih.gov/pubmed/34684695
http://dx.doi.org/10.3390/molecules26206113
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author Sichi, Luigi Giovanni Bernardo
Pierre, Fernanda Zapater
Arcila, Laura Viviana Calvache
de Andrade, Guilherme Schmitt
Tribst, João Paulo Mendes
Ausiello, Pietro
di Lauro, Alessandro Espedito
Borges, Alexandre Luiz Souto
author_facet Sichi, Luigi Giovanni Bernardo
Pierre, Fernanda Zapater
Arcila, Laura Viviana Calvache
de Andrade, Guilherme Schmitt
Tribst, João Paulo Mendes
Ausiello, Pietro
di Lauro, Alessandro Espedito
Borges, Alexandre Luiz Souto
author_sort Sichi, Luigi Giovanni Bernardo
collection PubMed
description The aim of this study was to evaluate the effect of biologically oriented preparation technique on the stress concentration of endodontically treated upper central incisors restored with zirconia crown (yttria-stabilized zirconia polycrystalline ceramic) through finite element analysis (FEA). Four models of maxillary central incisors containing enamel, dentin, periodontal ligament, cortical and medullary bone were created in CAD. Each model received a polymeric core-build up with nanofilled dental resin composite. The evaluated models were SM—preparation in shoulder 90°; CM—chamfer preparation; BOPT—biologically oriented preparation technique and BOPTB—BOPT preparation 1 mm below the cement-enamel junction. All models received zirconia crowns (5Y-TZP), fiberglass post and 1 mm ferrule. The models were imported into the analysis software with parameters for mechanical structural testing using the maximum principal stress and the tensile strength as the analysis criteria. Then, load of 150 N was applied at the cingulum with 45° slope to the long axis of the tooth, with the fixed base for each model. The type of marginal preparation affected the stresses concentration in endodontically treated teeth and in the zirconia crown margin. Considering the stress magnitude only, BOPT is a viable option for anterior monolithic zirconia crowns; however, with the highest stress magnitude at the restoration margin.
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spelling pubmed-85380032021-10-24 Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA Sichi, Luigi Giovanni Bernardo Pierre, Fernanda Zapater Arcila, Laura Viviana Calvache de Andrade, Guilherme Schmitt Tribst, João Paulo Mendes Ausiello, Pietro di Lauro, Alessandro Espedito Borges, Alexandre Luiz Souto Molecules Communication The aim of this study was to evaluate the effect of biologically oriented preparation technique on the stress concentration of endodontically treated upper central incisors restored with zirconia crown (yttria-stabilized zirconia polycrystalline ceramic) through finite element analysis (FEA). Four models of maxillary central incisors containing enamel, dentin, periodontal ligament, cortical and medullary bone were created in CAD. Each model received a polymeric core-build up with nanofilled dental resin composite. The evaluated models were SM—preparation in shoulder 90°; CM—chamfer preparation; BOPT—biologically oriented preparation technique and BOPTB—BOPT preparation 1 mm below the cement-enamel junction. All models received zirconia crowns (5Y-TZP), fiberglass post and 1 mm ferrule. The models were imported into the analysis software with parameters for mechanical structural testing using the maximum principal stress and the tensile strength as the analysis criteria. Then, load of 150 N was applied at the cingulum with 45° slope to the long axis of the tooth, with the fixed base for each model. The type of marginal preparation affected the stresses concentration in endodontically treated teeth and in the zirconia crown margin. Considering the stress magnitude only, BOPT is a viable option for anterior monolithic zirconia crowns; however, with the highest stress magnitude at the restoration margin. MDPI 2021-10-10 /pmc/articles/PMC8538003/ /pubmed/34684695 http://dx.doi.org/10.3390/molecules26206113 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
Sichi, Luigi Giovanni Bernardo
Pierre, Fernanda Zapater
Arcila, Laura Viviana Calvache
de Andrade, Guilherme Schmitt
Tribst, João Paulo Mendes
Ausiello, Pietro
di Lauro, Alessandro Espedito
Borges, Alexandre Luiz Souto
Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA
title Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA
title_full Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA
title_fullStr Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA
title_full_unstemmed Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA
title_short Effect of Biologically Oriented Preparation Technique on the Stress Concentration of Endodontically Treated Upper Central Incisor Restored with Zirconia Crown: 3D-FEA
title_sort effect of biologically oriented preparation technique on the stress concentration of endodontically treated upper central incisor restored with zirconia crown: 3d-fea
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538003/
https://www.ncbi.nlm.nih.gov/pubmed/34684695
http://dx.doi.org/10.3390/molecules26206113
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