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Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites
This study evaluated the stress distribution in five different class II cavities of premolar models restored with conventional or bulk-fill flowable composite by means of finite element analysis (FEA) under shrinkage and occlusal loading. An upper validated premolar model was imported in the softwar...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8125402/ https://www.ncbi.nlm.nih.gov/pubmed/34062936 http://dx.doi.org/10.3390/ma14092366 |
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author | Matuda, Amanda Guedes Nogueira Silveira, Marcos Paulo Motta de Andrade, Guilherme Schmitt Piva, Amanda Maria de Oliveira Dal Tribst, João Paulo Mendes Borges, Alexandre Luiz Souto Testarelli, Luca Mosca, Gabriella Ausiello, Pietro |
author_facet | Matuda, Amanda Guedes Nogueira Silveira, Marcos Paulo Motta de Andrade, Guilherme Schmitt Piva, Amanda Maria de Oliveira Dal Tribst, João Paulo Mendes Borges, Alexandre Luiz Souto Testarelli, Luca Mosca, Gabriella Ausiello, Pietro |
author_sort | Matuda, Amanda Guedes Nogueira |
collection | PubMed |
description | This study evaluated the stress distribution in five different class II cavities of premolar models restored with conventional or bulk-fill flowable composite by means of finite element analysis (FEA) under shrinkage and occlusal loading. An upper validated premolar model was imported in the software, and five class II cavities with different occlusal extensions and dimensions were prepared: horizontal cavity on the mesial surface (horizontal slot), mesio-occlusal cavity, mesial cavity (vertical slot), tunnel type cavity and direct access cavity. The models were restored with conventional or bulk-fill flowable resin composite. The tested materials were considered as homogeneous, linear, and isotropic. The Maximum Principal Stress criteria was chosen to evaluate the tensile stress results. The lowest shrinkage stress value was observed in the direct access cavity restored with bulk-fill flowable resin composite (36.12 MPa). The same cavity, restored with conventional composite showed a score of 36.14 MPa. The horizontal slot cavity with bulk-fill flowable showed a score of 46.71 MPa. The mesio-occlusal cavity with bulk-fill flowable had a score of 53.10 MPa, while with conventional composite this was 55.35 MPa. Higher shrinkage stress was found in the vertical slot cavity with conventional resin 56.14 MPa, followed by the same cavity with bulk-fill flowable 56.08 MPa. Results indicated that the use of bulk-fill flowable composite resin more significantly decreased the polymerization shrinkage stress magnitude. The larger the cavity and the volume of material necessary to restore the tooth, the greater the residual stress on enamel and dentin tissue. |
format | Online Article Text |
id | pubmed-8125402 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81254022021-05-17 Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites Matuda, Amanda Guedes Nogueira Silveira, Marcos Paulo Motta de Andrade, Guilherme Schmitt Piva, Amanda Maria de Oliveira Dal Tribst, João Paulo Mendes Borges, Alexandre Luiz Souto Testarelli, Luca Mosca, Gabriella Ausiello, Pietro Materials (Basel) Communication This study evaluated the stress distribution in five different class II cavities of premolar models restored with conventional or bulk-fill flowable composite by means of finite element analysis (FEA) under shrinkage and occlusal loading. An upper validated premolar model was imported in the software, and five class II cavities with different occlusal extensions and dimensions were prepared: horizontal cavity on the mesial surface (horizontal slot), mesio-occlusal cavity, mesial cavity (vertical slot), tunnel type cavity and direct access cavity. The models were restored with conventional or bulk-fill flowable resin composite. The tested materials were considered as homogeneous, linear, and isotropic. The Maximum Principal Stress criteria was chosen to evaluate the tensile stress results. The lowest shrinkage stress value was observed in the direct access cavity restored with bulk-fill flowable resin composite (36.12 MPa). The same cavity, restored with conventional composite showed a score of 36.14 MPa. The horizontal slot cavity with bulk-fill flowable showed a score of 46.71 MPa. The mesio-occlusal cavity with bulk-fill flowable had a score of 53.10 MPa, while with conventional composite this was 55.35 MPa. Higher shrinkage stress was found in the vertical slot cavity with conventional resin 56.14 MPa, followed by the same cavity with bulk-fill flowable 56.08 MPa. Results indicated that the use of bulk-fill flowable composite resin more significantly decreased the polymerization shrinkage stress magnitude. The larger the cavity and the volume of material necessary to restore the tooth, the greater the residual stress on enamel and dentin tissue. MDPI 2021-05-01 /pmc/articles/PMC8125402/ /pubmed/34062936 http://dx.doi.org/10.3390/ma14092366 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 Matuda, Amanda Guedes Nogueira Silveira, Marcos Paulo Motta de Andrade, Guilherme Schmitt Piva, Amanda Maria de Oliveira Dal Tribst, João Paulo Mendes Borges, Alexandre Luiz Souto Testarelli, Luca Mosca, Gabriella Ausiello, Pietro Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites |
title | Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites |
title_full | Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites |
title_fullStr | Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites |
title_full_unstemmed | Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites |
title_short | Computer Aided Design Modelling and Finite Element Analysis of Premolar Proximal Cavities Restored with Resin Composites |
title_sort | computer aided design modelling and finite element analysis of premolar proximal cavities restored with resin composites |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8125402/ https://www.ncbi.nlm.nih.gov/pubmed/34062936 http://dx.doi.org/10.3390/ma14092366 |
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