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Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study
PURPOSE: The aim of the present study was to compare the stress distributions on the dental implants, abutments, and bone caused by different overdenture attachment types under functional chewing forces. MATERIALS AND METHODS: The 3D finite element models of the mandible, dental implants, attachment...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Korean Academy of Prosthodontics
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7790603/ https://www.ncbi.nlm.nih.gov/pubmed/33489019 http://dx.doi.org/10.4047/jap.2020.12.6.351 |
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author | Turker, Nurullah Buyukkaplan, Ulviye Sebnem |
author_facet | Turker, Nurullah Buyukkaplan, Ulviye Sebnem |
author_sort | Turker, Nurullah |
collection | PubMed |
description | PURPOSE: The aim of the present study was to compare the stress distributions on the dental implants, abutments, and bone caused by different overdenture attachment types under functional chewing forces. MATERIALS AND METHODS: The 3D finite element models of the mandible, dental implants, attachment types, and prostheses were prepared. In accordance with a conventional dental implant supported overdenture design, the dental implants were positioned at the bone level in the canine teeth region bilaterally. A total of eight models using eight different attachment systems were used in this study. All the models were loaded to simulate chewing forces generated during the centric relationship (450 N), lateral movement (400 N), protrusive movement (400 N), and also in the presence of a food mass unilaterally (200 N). Stress outputs were obtained as the maximum principal stress and the equivalent von-Mises stress. RESULTS: In all attachment types, higher stress values were observed in the abutments, dental implants, and bone in the magnet attachments in different loading conditions. The highest stress values were observed among the magnet systems in the components of the Titanmagnetics model in all loading conditions (stresses were 15.4, 17.7, and 33.1 MPa on abutment, dental implant, and bone, respectively). The lowest stress value was observed in the models of Zest and O-Ring attachments. CONCLUSION: The results of the present study implied that attachment types permitting rotation and tolerating various angles created lower stresses on the bone, dental implants, and abutments. |
format | Online Article Text |
id | pubmed-7790603 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Korean Academy of Prosthodontics |
record_format | MEDLINE/PubMed |
spelling | pubmed-77906032021-01-21 Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study Turker, Nurullah Buyukkaplan, Ulviye Sebnem J Adv Prosthodont Original Article PURPOSE: The aim of the present study was to compare the stress distributions on the dental implants, abutments, and bone caused by different overdenture attachment types under functional chewing forces. MATERIALS AND METHODS: The 3D finite element models of the mandible, dental implants, attachment types, and prostheses were prepared. In accordance with a conventional dental implant supported overdenture design, the dental implants were positioned at the bone level in the canine teeth region bilaterally. A total of eight models using eight different attachment systems were used in this study. All the models were loaded to simulate chewing forces generated during the centric relationship (450 N), lateral movement (400 N), protrusive movement (400 N), and also in the presence of a food mass unilaterally (200 N). Stress outputs were obtained as the maximum principal stress and the equivalent von-Mises stress. RESULTS: In all attachment types, higher stress values were observed in the abutments, dental implants, and bone in the magnet attachments in different loading conditions. The highest stress values were observed among the magnet systems in the components of the Titanmagnetics model in all loading conditions (stresses were 15.4, 17.7, and 33.1 MPa on abutment, dental implant, and bone, respectively). The lowest stress value was observed in the models of Zest and O-Ring attachments. CONCLUSION: The results of the present study implied that attachment types permitting rotation and tolerating various angles created lower stresses on the bone, dental implants, and abutments. The Korean Academy of Prosthodontics 2020-12 2020-12-28 /pmc/articles/PMC7790603/ /pubmed/33489019 http://dx.doi.org/10.4047/jap.2020.12.6.351 Text en © 2020 The Korean Academy of Prosthodontics http://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 (http://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 | Original Article Turker, Nurullah Buyukkaplan, Ulviye Sebnem Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study |
title | Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study |
title_full | Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study |
title_fullStr | Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study |
title_full_unstemmed | Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study |
title_short | Effects of overdenture attachment systems with different working principles on stress transmission: A three-dimensional finite element study |
title_sort | effects of overdenture attachment systems with different working principles on stress transmission: a three-dimensional finite element study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7790603/ https://www.ncbi.nlm.nih.gov/pubmed/33489019 http://dx.doi.org/10.4047/jap.2020.12.6.351 |
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