Force ratio in masticatory muscles after total replacement of the temporomandibular joint

• Autorzy: Vilimek M. , Horak Z. , Baca W.

Identyfikatory

DOI

10.5277/ABB-00467-2015-03

• Języki publikacji: EN

Abstrakty

EN

The temporomandibular (TM) joint is one of the most active joints in the human body, and any defect in this joint has a significant impact on the quality of life. The objective of this study was to analyze changes in the force ratio after TM joint replacement on contralateral TM joint loading. Implantation of an artificial TM joint often requires removal of 3 of the 4 masticatory muscles (activators). In order to perform true loading of the TM joint, loading during mastication was investigated. Input kinematic variables and mastication force were experimentally examined. The inverse dynamics approach and static optimization technique were used for solution of the redundant mechanism. Muscle forces, and reactions in the TM joint were calculated. We modified the model for several different tasks. The m. temporalis and m. masseter were removed individually and together and the forces of mastication on the TM joint were calculated for each variation. To evaluate the results, a parametric numerical FE analysis was created to compare the magnitude of the TM joint loading during the bite process for four different muscle resections. The results show an influence relative to the extent of muscle resection on contralateral TM joint loading in a total TM joint replacement. The biggest increase in the loading magnitude on the contralateral TM joint is most evident after m. masseter and m. temporalis resection. The results from all simulations support our hypothesis that the greater the extent of muscle resection the greater the magnitude of contralateral TM joint overloading.

Słowa kluczowe

EN

inverse dynamics; static optimization; temporomandibular joint; muscle forces; mastication; FE analyses

PL

dynamika odwrotna; optymalizacja statyczna; staw skroniowo-żuchwowy; siły mięśniowe

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2016
• Tom: Vol. 18, no. 3
• Strony: 131--136
• Opis fizyczny: Bibliogr. 19 poz., wykr.

Twórcy

autor

Vilimek M.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Department of Mechanics, Biomechanics and Mechatronics, Prague, Czech Republic

autor

Horak Z.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Department of Mechanics, Biomechanics and Mechatronics, Prague, Czech Republic
• College of Polytechnics Jihlava, Jihlava, Czech Republic

autor

Baca W.

• College of Polytechnics Jihlava, Jihlava, Czech Republic

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.