Evaluation of stress contours on a maxillary molar subjected to simulated tooth loads by finite element analysis technique

Pratibha, PK and Sharma, Yagnesh N and Gopalkrishna , B (2012) Evaluation of stress contours on a maxillary molar subjected to simulated tooth loads by finite element analysis technique. Archives of Orofacial Sciences, 7 (1). pp. 1-6. ISSN 2231-7163

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Abstract

Forces applied by dental occlusion generate stresses which are transmitted to the surrounding bone via the periodontal ligament causing a tissue response. The purpose of this study was to evaluate the response of a maxillary molar under secondary trauma from occlusion by observing the changes in its stress patterns. In order to visualize the exact pattern of stress distribution, three dimensional finite element analysis models were developed. A force of 3N, moment of 27Nmm and a counter rotation moment of 15Nmm were applied to simula te orthodontic forces. Stresses produced at the periodontal ligament -both othere interface on a maxillary molar model with normal bone height subjected to an orthodontic force were compared with molar models showing bone loss and analyzed using ‘finite element a nalysis technique. As the bone loss increased, it was observed that, the concentration of stresses at the apical one -third of the tooth also increased and there was high tendency for tooth displacement. The results suggest that an alteration in the magnitude of forces applied may be necessary in teeth with an increased crown to root ratio to maintain a healthy periodontium.

Item Type: Article
Uncontrolled Keywords: D isplacement, f inite element analysis, increased crown to root ratio, maxillary molar, periodontal ligament - tooth interface , stress pattern, trauma from occlusion
Subjects: Dentistry > MCODS Manipal > Pedodontics and preventive Dentistry
Engineering > MIT Manipal > Humanities and Management
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 04 Jul 2014 05:42
Last Modified: 04 Jul 2014 05:42
URI: http://eprints.manipal.edu/id/eprint/140015

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