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Related Experiment Videos

Mandibular movement in lateral excursions.

K D Faulkner, H F Atkinson

    Journal of Oral Rehabilitation
    |March 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Mandibular movement analysis revealed unexpected asymmetry and directional changes during chewing in healthy young adults. Dental restorations may influence these normal jaw movements.

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    Area of Science:

    • Dental Science
    • Biomechanics
    • Kinesiology

    Background:

    • Understanding normal mandibular movement is crucial for diagnosing and treating occlusal and TMJ disorders.
    • Previous research often assumes symmetrical jaw function, which may not reflect reality in healthy individuals.

    Purpose of the Study:

    • To investigate the characteristics of mandibular movement during lateral articulatory tasks in young subjects.
    • To identify patterns of symmetry, direction changes, and displacement coincidence in jaw motion.

    Main Methods:

    • Utilized a closed-circuit television movement detector to record mandibular kinematics.
    • Analyzed movement vectors in three orthogonal planes to create movement envelopes.
    • Examined young subjects with no apparent dental disease or malocclusion.

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    Main Results:

    • Observed frequent deviations from symmetrical mandibular movement patterns.
    • Noted frequent, sudden small changes in the direction of jaw movement.
    • Found that maximum displacement in different movement vectors did not always occur simultaneously.

    Conclusions:

    • Mandibular movement in healthy young adults is often asymmetrical and dynamic.
    • Factors such as dental restorations may initiate variations from typical mandibular pathways.
    • Further research is needed to correlate dental interventions with observed kinematic changes.