Cargando…

Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study

OBJECTIVES: The aim of this study was to investigate whether the diameter and direction of the plunger and simulation of the periodontal ligament (PDL) affected the stress distribution in endodontically treated premolars. METHODS: A fracture strength test was simulated via finite element analysis. A...

Descripción completa

Detalles Bibliográficos
Autores principales: Uzunoglu-Özyürek, Emel, Küçükkaya Eren, Selen, Eraslan, Oğuz, Belli, Sema
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Conservative Dentistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6529799/
https://www.ncbi.nlm.nih.gov/pubmed/31149613
http://dx.doi.org/10.5395/rde.2019.44.e15
_version_ 1783420485397118976
author Uzunoglu-Özyürek, Emel
Küçükkaya Eren, Selen
Eraslan, Oğuz
Belli, Sema
author_facet Uzunoglu-Özyürek, Emel
Küçükkaya Eren, Selen
Eraslan, Oğuz
Belli, Sema
author_sort Uzunoglu-Özyürek, Emel
collection PubMed
description OBJECTIVES: The aim of this study was to investigate whether the diameter and direction of the plunger and simulation of the periodontal ligament (PDL) affected the stress distribution in endodontically treated premolars. METHODS: A fracture strength test was simulated via finite element analysis. A base model was set up, and the following parameters were modified: plunger diameter (3 mm vs. 6 mm), plunger direction (vertical vs. 135° angular to the central fossa), and PDL simulation. The analysis was conducted using the CosmosWorks structural analysis program, and the results are presented in terms of von Mises stresses. RESULTS: The smaller plunger increased the stresses at the contact area of the crown, but the plunger diameter had no effect on the stress distribution within the root. An angular plunger direction increased stresses within the root, as well as at the buccal cusp of the crown, compared with the vertical direction. Simulation of the PDL caused higher stress accumulation, especially in the cervical region of the root. CONCLUSIONS: The plunger diameter had no effect on the stress distribution in the roots, whereas the plunger direction and PDL simulation did affect the stress distribution. More stringent standards can be established by taking such parameters into account when performing fracture testing in future studies.
format Online
Article
Text
id pubmed-6529799
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher The Korean Academy of Conservative Dentistry
record_format MEDLINE/PubMed
spelling pubmed-65297992019-05-30 Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study Uzunoglu-Özyürek, Emel Küçükkaya Eren, Selen Eraslan, Oğuz Belli, Sema Restor Dent Endod Research Article OBJECTIVES: The aim of this study was to investigate whether the diameter and direction of the plunger and simulation of the periodontal ligament (PDL) affected the stress distribution in endodontically treated premolars. METHODS: A fracture strength test was simulated via finite element analysis. A base model was set up, and the following parameters were modified: plunger diameter (3 mm vs. 6 mm), plunger direction (vertical vs. 135° angular to the central fossa), and PDL simulation. The analysis was conducted using the CosmosWorks structural analysis program, and the results are presented in terms of von Mises stresses. RESULTS: The smaller plunger increased the stresses at the contact area of the crown, but the plunger diameter had no effect on the stress distribution within the root. An angular plunger direction increased stresses within the root, as well as at the buccal cusp of the crown, compared with the vertical direction. Simulation of the PDL caused higher stress accumulation, especially in the cervical region of the root. CONCLUSIONS: The plunger diameter had no effect on the stress distribution in the roots, whereas the plunger direction and PDL simulation did affect the stress distribution. More stringent standards can be established by taking such parameters into account when performing fracture testing in future studies. The Korean Academy of Conservative Dentistry 2019-04-18 /pmc/articles/PMC6529799/ /pubmed/31149613 http://dx.doi.org/10.5395/rde.2019.44.e15 Text en Copyright © 2019. The Korean Academy of Conservative Dentistry https://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Uzunoglu-Özyürek, Emel
Küçükkaya Eren, Selen
Eraslan, Oğuz
Belli, Sema
Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
title Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
title_full Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
title_fullStr Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
title_full_unstemmed Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
title_short Critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
title_sort critical evaluation of fracture strength testing for endodontically treated teeth: a finite element analysis study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6529799/
https://www.ncbi.nlm.nih.gov/pubmed/31149613
http://dx.doi.org/10.5395/rde.2019.44.e15
work_keys_str_mv AT uzunogluozyurekemel criticalevaluationoffracturestrengthtestingforendodonticallytreatedteethafiniteelementanalysisstudy
AT kucukkayaerenselen criticalevaluationoffracturestrengthtestingforendodonticallytreatedteethafiniteelementanalysisstudy
AT eraslanoguz criticalevaluationoffracturestrengthtestingforendodonticallytreatedteethafiniteelementanalysisstudy
AT bellisema criticalevaluationoffracturestrengthtestingforendodonticallytreatedteethafiniteelementanalysisstudy