Cargando…

The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement

Orthodontic tooth movement occurs as a result of resorption and formation of the alveolar bone due to an applied load, but the stimulus responsible for triggering orthodontic tooth movement remains the subject of debate. It has been suggested that the periodontal ligament (PDL) plays a key role. How...

Descripción completa

Detalles Bibliográficos
Autores principales: McCormack, Steven W., Witzel, Ulrich, Watson, Peter J., Fagan, Michael J., Gröning, Flora
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4103804/
https://www.ncbi.nlm.nih.gov/pubmed/25036099
http://dx.doi.org/10.1371/journal.pone.0102387
_version_ 1782327194770472960
author McCormack, Steven W.
Witzel, Ulrich
Watson, Peter J.
Fagan, Michael J.
Gröning, Flora
author_facet McCormack, Steven W.
Witzel, Ulrich
Watson, Peter J.
Fagan, Michael J.
Gröning, Flora
author_sort McCormack, Steven W.
collection PubMed
description Orthodontic tooth movement occurs as a result of resorption and formation of the alveolar bone due to an applied load, but the stimulus responsible for triggering orthodontic tooth movement remains the subject of debate. It has been suggested that the periodontal ligament (PDL) plays a key role. However, the mechanical function of the PDL in orthodontic tooth movement is not well understood as most mechanical models of the PDL to date have ignored the fibrous structure of the PDL. In this study we use finite element (FE) analysis to investigate the strains in the alveolar bone due to occlusal and orthodontic loads when PDL is modelled as a fibrous structure as compared to modelling PDL as a layer of solid material. The results show that the tension-only nature of the fibres essentially suspends the tooth in the tooth socket and their inclusion in FE models makes a significant difference to both the magnitude and distribution of strains produced in the surrounding bone. The results indicate that the PDL fibres have a very important role in load transfer between the teeth and alveolar bone and should be considered in FE studies investigating the biomechanics of orthodontic tooth movement.
format Online
Article
Text
id pubmed-4103804
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-41038042014-07-21 The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement McCormack, Steven W. Witzel, Ulrich Watson, Peter J. Fagan, Michael J. Gröning, Flora PLoS One Research Article Orthodontic tooth movement occurs as a result of resorption and formation of the alveolar bone due to an applied load, but the stimulus responsible for triggering orthodontic tooth movement remains the subject of debate. It has been suggested that the periodontal ligament (PDL) plays a key role. However, the mechanical function of the PDL in orthodontic tooth movement is not well understood as most mechanical models of the PDL to date have ignored the fibrous structure of the PDL. In this study we use finite element (FE) analysis to investigate the strains in the alveolar bone due to occlusal and orthodontic loads when PDL is modelled as a fibrous structure as compared to modelling PDL as a layer of solid material. The results show that the tension-only nature of the fibres essentially suspends the tooth in the tooth socket and their inclusion in FE models makes a significant difference to both the magnitude and distribution of strains produced in the surrounding bone. The results indicate that the PDL fibres have a very important role in load transfer between the teeth and alveolar bone and should be considered in FE studies investigating the biomechanics of orthodontic tooth movement. Public Library of Science 2014-07-18 /pmc/articles/PMC4103804/ /pubmed/25036099 http://dx.doi.org/10.1371/journal.pone.0102387 Text en © 2014 McCormack et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
McCormack, Steven W.
Witzel, Ulrich
Watson, Peter J.
Fagan, Michael J.
Gröning, Flora
The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement
title The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement
title_full The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement
title_fullStr The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement
title_full_unstemmed The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement
title_short The Biomechanical Function of Periodontal Ligament Fibres in Orthodontic Tooth Movement
title_sort biomechanical function of periodontal ligament fibres in orthodontic tooth movement
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4103804/
https://www.ncbi.nlm.nih.gov/pubmed/25036099
http://dx.doi.org/10.1371/journal.pone.0102387
work_keys_str_mv AT mccormackstevenw thebiomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT witzelulrich thebiomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT watsonpeterj thebiomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT faganmichaelj thebiomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT groningflora thebiomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT mccormackstevenw biomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT witzelulrich biomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT watsonpeterj biomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT faganmichaelj biomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement
AT groningflora biomechanicalfunctionofperiodontalligamentfibresinorthodontictoothmovement