PMID: 7932264Aug 1, 1994Paper

Biomechanical model of the human mandible in unilateral clench: distribution of temporomandibular joint reaction forces between working and balancing sides

The Journal of Prosthetic Dentistry
V F Ferrario, C Sforza


In a previous article we reported on our development of a biomechanical analog of the human mandible and a simple support model was introduced. The model has been further developed to calculate the relative degree of load on the working and balancing sides of the temporomandibular joint during unilateral clench. The relative load on each joint is a function of the biting force, the geometric setting (subject's anatomy, points of application of the biting force on the dental arch and of the resultant of the forces of the masticatory muscles), and the value of the electromyographic asymmetry (relative contribution of working-versus balancing-side muscles) and activity indexes (relative contribution of masseter versus anterior temporal muscle of both sides). The proposed biomechanical model showed that the reaction forces that act on the temporomandibular joint during unilateral clench do not always load the balancing-side joint more than the working-side joint. Modifications of the asymmetry index changed the relative load between the two joints, and a higher temporal muscle activity increased the joint load on both the working and the balancing sides.


Aug 25, 2009·Cranio : the Journal of Craniomandibular Practice·André Luís BotelhoMarco Antonio Moreira Rodrigues da Silva
Nov 3, 2010·Cranio : the Journal of Craniomandibular Practice·André Luís BotelhoMarco Antonio Moreira Rodrigues da Silva
Mar 5, 2011·Cranio : the Journal of Craniomandibular Practice·André Luís BotelhoMarco Antonio Moreira Rodrigues da Silva
Aug 25, 2012·Cranio : the Journal of Craniomandibular Practice·Carolina A Vieira e SilvaGianluca M Tartaglia
Nov 28, 2017·Cranio : the Journal of Craniomandibular Practice·Ana Maria Bettoni Rodrigues da SilvaManoel Damião de Sousa Neto
May 6, 2004·Journal of Oral Rehabilitation·V F FerrarioG M Tartaglia
May 24, 2003·Critical Reviews in Oral Biology and Medicine : an Official Publication of the American Association of Oral Biologists·Eiji Tanaka, Theo van Eijden
Apr 8, 2017·Cranio : the Journal of Craniomandibular Practice·Deniz CelakilTamer Celakil
Oct 31, 2006·Medical & Biological Engineering & Computing·Makoto AbeShoji Kohno
Dec 2, 2008·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·U Santana-MoraU Santana-Penín

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