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Non Linear Finite Element Stress Analysis of a Restored Tooth in the Oral Cavity

[+] Author Affiliations
Rashmi Uddanwadiker, Pramod Padole

Visvesvaraya National Institute of Technology, Nagpur, India

Harshwardhan Arya

D. K. Dental College, Nagpur, India

Paper No. IMECE2007-42765, pp. 47-53; 7 pages
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4296-7 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME


The aim of the present study is to obtain the stress distribution pattern on the different domains of the tooth in the oral cavity, taking into account non linear properties of the periodontal ligaments (PDL)surrounding the tooth. The stresses and deformation under the action of chewing forces are studied to estimate the risk of tooth fractures. Initially, linear stress and deformation analysis is carried out with three posts different in constitution. However, considering the role of periodontal ligaments, which ensures uniform stress distribution in tooth structure, due to its elastic and non-linear properties, it is felt necessary to simulate the model for non linear analysis. The study reveals that non-linear analysis gives more realistic results as compared to linear analysis. It is observed that under similar loading conditions, the stresses are approximately 25% less in case of non linear analysis and the deformation is 50% more as compared to linear static analysis for an endodontically treated maxillary central incisor. The Dentist can do selection of optimum post core system with better accuracy.

Copyright © 2007 by ASME



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