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Related Experiment Videos

True grit: a microwear experiment.

R F Kay, H H Covert

    American Journal of Physical Anthropology
    |May 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    New research confirms that dental microwear patterns emerge quickly, even on soft diets. A novel technique using enzymes to clear tooth pellicle enables precise tracking of wear in live animals.

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    Area of Science:

    • Paleontology
    • Zoology
    • Dental Microwear Analysis

    Background:

    • Distinguishing dietary effects on dental microwear can be challenging.
    • Previous studies suggested longer experimental periods might be needed to observe diagnostic wear patterns.

    Purpose of the Study:

    • To address challenges regarding the timeframe for observing diagnostic dental microwear.
    • To introduce a new method for studying dental microwear changes over time in live subjects.

    Main Methods:

    • Utilized experimental diets to assess microscopic dental wear in American opossums.
    • Developed a new technique involving proteolytic enzyme application to remove tooth pellicle.
    • Created precision dental impressions to analyze microwear patterns on teeth of anesthetized animals.

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    Main Results:

    • Significant dental wear was observed even in control animals fed a soft, unabrasive diet within the experimental timeframe.
    • The new technique allows for the study of changing microwear patterns in individual animals over time, serving as their own controls.
    • The enzyme treatment effectively removed the proteinaceous pellicle, revealing detailed microwear scratches.

    Conclusions:

    • The timeframe of previous experiments was sufficient for observing diagnostic dental microwear.
    • The novel technique provides a reliable method for studying dynamic dental microwear patterns in vivo.
    • This advancement aids in more accurate dietary reconstructions from fossil dental evidence.