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Related Experiment Videos

Scanning electron microscopy of rat maturation ameloblasts

A Boyde, E J Reith

    Cell and Tissue Research
    |March 9, 1977
    PubMed
    Summary

    Scanning electron microscopy reveals cyclical changes in maturation ameloblasts, the cells responsible for enamel mineralization. These cellular changes involve variations in intercellular connections and surface features during tooth development.

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    Area of Science:

    • Dental Enamel Research
    • Cell Biology
    • Mineralization Processes

    Background:

    • Ameloblasts are crucial cells in tooth development, responsible for enamel secretion and maturation.
    • Understanding ameloblast morphology is key to comprehending enamel mineralization and potential defects.

    Purpose of the Study:

    • To investigate the ultrastructural morphology of post-secretory, maturation-phase ameloblasts using scanning electron microscopy.
    • To correlate specific cellular features with potential functional states of ameloblasts during enamel maturation.

    Main Methods:

    • Scanning electron microscopy (SEM) was employed on freeze-fractured and dry-dissected rat incisors.
    • Detailed analysis of ameloblast basal, lateral, and distal cell surface features was performed.

    Main Results:

    • Maturation ameloblasts exhibit diverse morphologies, including variations in basal contacts (open vs. closed), lateral cell surfaces (ridges, folds, microvilli), and distal striated borders.
    • Specific combinations of these features suggest distinct functional states.
    • The presence or absence of striated borders and basal contacts correlates with specific lateral surface configurations.

    Conclusions:

    • The observed morphological variations in maturation ameloblasts suggest cyclical changes in their activity during the enamel maturation phase.
    • These findings provide insights into the dynamic nature of ameloblast function and enamel mineralization.

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