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Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth

BACKGROUND: Carious lesions and dental fractures cause weakening in the dental structure. In these situations, endodontic treatment and prosthetic rehabilitation using an intraradicular post are indicated. However, the postspace preparation of the root canal further weakens the dental remnant, espec...

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Autores principales: da Fonseca, Gabriela Fernandes, de Andrade, Guilherme Schmitt, Dal Piva, Amanda Maria de Oliveira, Tribst, João Paulo Mendes, Borges, Alexandre Luiz Souto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180740/
https://www.ncbi.nlm.nih.gov/pubmed/30449961
http://dx.doi.org/10.4103/jips.jips_168_18
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author da Fonseca, Gabriela Fernandes
de Andrade, Guilherme Schmitt
Dal Piva, Amanda Maria de Oliveira
Tribst, João Paulo Mendes
Borges, Alexandre Luiz Souto
author_facet da Fonseca, Gabriela Fernandes
de Andrade, Guilherme Schmitt
Dal Piva, Amanda Maria de Oliveira
Tribst, João Paulo Mendes
Borges, Alexandre Luiz Souto
author_sort da Fonseca, Gabriela Fernandes
collection PubMed
description BACKGROUND: Carious lesions and dental fractures cause weakening in the dental structure. In these situations, endodontic treatment and prosthetic rehabilitation using an intraradicular post are indicated. However, the postspace preparation of the root canal further weakens the dental remnant, especially if there is no ferrule present. This study aimed to evaluate the stress distribution in endodontically treated upper premolars treated with different rehabilitation approaches. MATERIALS AND METHODS: An endodontically treated first upper premolar was modeled for finite element analysis. Three different approaches were carried out on this model: rehabilitation with fiberglass post (FCP), endocrown (ECW), or buildup. The models were exported in STEP format to the analysis software (ANSYS 17.2, ANSYS Inc., Houston, TX, USA). The solids were considered isotropic, homogeneous, and linearly elastic. A mechanical, structural static analysis was used as the criterion of maximum principal stress to show regions under tensile stress to evaluate the stress distribution in the restoration, cementation line, and root. A load of 400 N (90°) was applied to the lingual triangular ridge. The values of maximum principal stress in MPa were evaluated through colorimetric graphs. RESULTS: Similar stress concentration was observed for all groups. However, the ECW group presented higher values in the restoration/cement interface and root dentin. CONCLUSIONS: All the treatment modalities had favorable mechanical behavior to support the masticatory loads; nevertheless, the ECW group presented a higher risk of detachment failure.
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spelling pubmed-61807402019-10-01 Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth da Fonseca, Gabriela Fernandes de Andrade, Guilherme Schmitt Dal Piva, Amanda Maria de Oliveira Tribst, João Paulo Mendes Borges, Alexandre Luiz Souto J Indian Prosthodont Soc Original Article BACKGROUND: Carious lesions and dental fractures cause weakening in the dental structure. In these situations, endodontic treatment and prosthetic rehabilitation using an intraradicular post are indicated. However, the postspace preparation of the root canal further weakens the dental remnant, especially if there is no ferrule present. This study aimed to evaluate the stress distribution in endodontically treated upper premolars treated with different rehabilitation approaches. MATERIALS AND METHODS: An endodontically treated first upper premolar was modeled for finite element analysis. Three different approaches were carried out on this model: rehabilitation with fiberglass post (FCP), endocrown (ECW), or buildup. The models were exported in STEP format to the analysis software (ANSYS 17.2, ANSYS Inc., Houston, TX, USA). The solids were considered isotropic, homogeneous, and linearly elastic. A mechanical, structural static analysis was used as the criterion of maximum principal stress to show regions under tensile stress to evaluate the stress distribution in the restoration, cementation line, and root. A load of 400 N (90°) was applied to the lingual triangular ridge. The values of maximum principal stress in MPa were evaluated through colorimetric graphs. RESULTS: Similar stress concentration was observed for all groups. However, the ECW group presented higher values in the restoration/cement interface and root dentin. CONCLUSIONS: All the treatment modalities had favorable mechanical behavior to support the masticatory loads; nevertheless, the ECW group presented a higher risk of detachment failure. Medknow Publications & Media Pvt Ltd 2018 /pmc/articles/PMC6180740/ /pubmed/30449961 http://dx.doi.org/10.4103/jips.jips_168_18 Text en Copyright: © 2018 The Journal of Indian Prosthodontic Society http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
da Fonseca, Gabriela Fernandes
de Andrade, Guilherme Schmitt
Dal Piva, Amanda Maria de Oliveira
Tribst, João Paulo Mendes
Borges, Alexandre Luiz Souto
Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
title Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
title_full Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
title_fullStr Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
title_full_unstemmed Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
title_short Computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
title_sort computer-aided design finite element modeling of different approaches to rehabilitate endodontically treated teeth
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180740/
https://www.ncbi.nlm.nih.gov/pubmed/30449961
http://dx.doi.org/10.4103/jips.jips_168_18
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