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Distribution of stress on TMJ disc induced by use of chincup therapy: assessment by the finite element method

Overview of attention for article published in Dental Press Journal of Orthodontics, October 2017
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Title
Distribution of stress on TMJ disc induced by use of chincup therapy: assessment by the finite element method
Published in
Dental Press Journal of Orthodontics, October 2017
DOI 10.1590/2177-6709.22.5.083-089.oar
Pubmed ID
Authors

Flávio Siqueira Calçada, Antônio Sérgio Guimarães, Marcelo Lucchesi Teixeira, Flávio Atsushi Takamatsu

Abstract

To assess the distribution of stress produced on TMJ disc by chincup therapy, by means of the finite element method. a simplified three-dimensional TMJ disc model was developed by using Rhinoceros 3D software, and exported to ANSYS software. A 4.9N load was applied on the inferior surface of the model at inclinations of 30, 40, and 50 degrees to the mandibular plane (GoMe). ANSYS was used to analyze stress distribution on the TMJ disc for the different angulations, by means of finite element method. The results showed that the tensile and compressive stresses concentrations were higher on the inferior surface of the model. More presence of tensile stress was found in the middle-anterior region of the model and its location was not altered in the three directions of load application. There was more presence of compressive stress in the middle and mid-posterior regions, but when a 50o inclined load was applied, concentration in the middle region was prevalent. Tensile and compressive stresses intensities progressively diminished as the load was more vertically applied. stress induced by the chincup therapy is mainly located on the inferior surface of the model. Loads at greater angles to the mandibular plane produced distribution of stresses with lower intensity and a concentration of compressive stresses in the middle region. The simplified three-dimensional model proved useful for assessing the distribution of stresses on the TMJ disc induced by the chincup therapy.

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Geographical breakdown

Country Count As %
Unknown 20 100%

Demographic breakdown

Readers by professional status Count As %
Student > Postgraduate 5 25%
Student > Bachelor 2 10%
Student > Doctoral Student 2 10%
Researcher 2 10%
Student > Master 2 10%
Other 4 20%
Unknown 3 15%
Readers by discipline Count As %
Medicine and Dentistry 13 65%
Psychology 1 5%
Materials Science 1 5%
Earth and Planetary Sciences 1 5%
Unknown 4 20%