What question did this study set out to answer?

To investigate how food bolus size, stiffness, and position influence muscle activation patterns and mechanical loading in the temporomandibular joint during unilateral chewing.

March 2, 2023Open Access

The effect of bolus properties on muscle activation patterns and TMJ loading during unilateral chewing

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To investigate how food bolus size, stiffness, and position influence muscle activation patterns and mechanical loading in the temporomandibular joint during unilateral chewing.
Constructed an in silico biomechanical model integrating rigid body bones, finite element temporomandibular joint discs, and line actuator muscles.
Applied a forward dynamics tracking approach to simulate 256 distinct combinations of food bolus size, stiffness, and position driven by mandibular motion.
Computed mandibular kinematics aligned with empirical data, and overall muscle activation timing patterns remained stable across all 256 simulated conditions.
Muscle activation force magnitudes and temporomandibular joint disc von Mises stress increased with larger and stiffer food boluses, whereas smaller and softer boluses substantially reduced joint loading.

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Implication

Biomechanical simulation study demonstrates that smaller and softer food boluses reduce TMJ loading, supporting dietary self-management guidelines for temporomandibular disorders.

Cite This Study

Sagl et al. (2023) studied this question.

synapsesocial.com/papers/6a88f33bc5b3adf02218b27c https://doi.org/10.1101/2023.03.02.526627

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Implication

Biomechanical simulation study demonstrates that smaller and softer food boluses reduce TMJ loading, supporting dietary self-management guidelines for temporomandibular disorders.

The effect of bolus properties on muscle activation patterns and TMJ loading during unilateral chewing

Key Points

Discussion

Implication

Cite This Study

The effect of bolus properties on muscle activation patterns and TMJ loading during unilateral chewing

Key Points

Discussion

Implication

Cite This Study

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