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The Geniohyoid Muscle Directly Affects Masticatory Function: Evaluation with Decision-Tree Analysis.

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    The cross-sectional area (CSA) of the geniohyoid (GH) muscle significantly impacts chewing ability. This finding highlights GH muscle size as a key factor in evaluating masticatory function.

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    Area of Science:

    • Biomechanics
    • Human Physiology
    • Oral Health

    Background:

    • Masticatory ability is crucial for nutrition and overall health.
    • Understanding the factors influencing masticatory performance is essential for clinical assessment.
    • The geniohyoid (GH) muscle's role in mastication requires further elucidation.

    Purpose of the Study:

    • To investigate the association between geniohyoid (GH) muscle morphology and masticatory ability.
    • To utilize decision-tree analysis to identify key predictors of masticatory performance.
    • To clarify the functional impact of GH muscle cross-sectional area (CSA) on chewing efficiency.

    Main Methods:

    • A cohort of 103 participants was studied using a cross-sectional design.
    • Measurements included GH muscle CSA, neck circumference, BMI, tongue pressure, and jaw opening strength.
    • Masticatory ability score was the primary outcome, with GH muscle CSA as a key predictor in a decision-tree model.

    Main Results:

    • Decision-tree analysis revealed the cross-sectional area (CSA) of the geniohyoid (GH) muscle as a significant factor.
    • GH muscle CSA demonstrated a substantial impact on the overall masticatory ability score.
    • Other measured variables showed varying degrees of association with masticatory function.

    Conclusions:

    • The cross-sectional area (CSA) of the geniohyoid (GH) muscle is a critical determinant of masticatory ability.
    • GH muscle morphology, specifically its size, plays a significant role in chewing performance.
    • These findings suggest that assessing GH muscle CSA can aid in the evaluation of masticatory function.