[Retracted publication] The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis

Panagiotopoulou, Olga, Kupczik, Kornelius and Cobb, Samuel N. (2011) [Retracted publication] The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis. Journal of Anatomy, 218 1: 75-86. doi:10.1111/j.1469-7580.2010.01257.x


NOTE: This article has been retracted.
Author Panagiotopoulou, Olga
Kupczik, Kornelius
Cobb, Samuel N.
Title [Retracted publication] The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis
Journal name Journal of Anatomy   Check publisher's open access policy
ISSN 0021-8782
1469-7580
Publication date 2011-01-01
Year available 2011
Sub-type Article (original research)
DOI 10.1111/j.1469-7580.2010.01257.x
Open Access Status DOI
Volume 218
Issue 1
Start page 75
End page 86
Total pages 12
Place of publication London, United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Whilst the periodontal ligament (PDL) acts as an attachment tissue between bone and tooth, hypotheses regarding the role of the PDL as a hydrodynamic damping mechanism during intraoral food processing have highlighted its potential importance in finite element (FE) analysis. Although experimental and constitutive models have correlated the mechanical function of the PDL tissue with its anisotropic, heterogeneous, viscoelastic and non-linear elastic nature, in many FE simulations the PDL is either present or absent, and when present is variably modelled. In addition, the small space the PDL occupies and the inability to visualize the PDL tissue using μCT scans poses issues during FE model construction and so protocols for the PDL thickness also vary. In this paper we initially test and validate the sensitivity of an FE model of a macaque mandible to variations in the Young’s modulus and the thickness of the PDL tissue. We then tested the validity of the FE models by carrying out experimental strain measurements on the same mandible in the laboratory using laser speckle interferometry. These strain measurements matched the FE predictions very closely, providing confidence that material properties and PDL thickness were suitably defined. The FE strain results across the mandible are generally insensitive to the absence and variably modelled PDL tissue. Differences are only found in the alveolar region adjacent to the socket of the loaded tooth. The results indicate that the effect of the PDL on strain distribution and/or absorption is restricted locally to the alveolar bone surrounding the teeth and does not affect other regions of the mandible. 
Keyword Finite Element Analysis
Masticatory biomechanics
Periodontal Ligament
Rhythmic Jaw Movements
Elevator Muscle Activity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Biomedical Sciences Publications
Retracted publications
 
Available Versions of this Record
  • [Retracted publication] The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis (Current Record)
  • Retracted: expression of concern Journal Article (deposited 28-07-2017)
  • Retraction Journal Article (deposited 28-07-2017)
 
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Citation counts: TR Web of Science Citation Count  Cited 34 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 39 times in Scopus Article | Citations
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