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Comparative investigations on fluorosed enamel.

M Triller, A Bouratbine, D Guillaumin

    Scanning Electron Microscopy
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

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    Fluorosed human enamel exhibits altered mineralization patterns and surface fissures containing plaque. The organic matrix is denser and more irregular compared to sound enamel.

    Area of Science:

    • Dental research
    • Materials science
    • Biomineralization

    Background:

    • Dental fluorosis is a condition affecting tooth enamel structure.
    • Understanding structural changes in fluorosed enamel is crucial for dental health.
    • Previous studies have investigated fluorosis, but detailed microstructural analysis is ongoing.

    Purpose of the Study:

    • To investigate the microstructural alterations in human dental fluorosis.
    • To characterize the mineralization patterns and organic matrix of fluorosed enamel.
    • To compare findings from various analytical techniques.

    Main Methods:

    • Human teeth from Nabeul, Tunisia, were analyzed.
    • Longitudinal sections were prepared, microradiographed, and examined using Scanning Electron Microscopy (SEM).

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  • Acid etching, demineralization with EDTA, histochemical staining, and ion microanalysis were employed.

    • Main Results:

    • SEM revealed altered mineralization patterns, surface fissures filled with plaque, and enlarged acid-resistant sheaths.
    • The organic matrix in fluorosed enamel appeared as a dense, irregular fibrous network.
    • Histochemical staining indicated low Alcian blue and PAS positive content, except near the enamel-dentine junction.

    Conclusions:

    • Fluorosed enamel shows significant microstructural changes in mineralization and organic matrix.
    • Surface and subsurface alterations, including plaque penetration, are characteristic of this condition.
    • SEM and histochemical analyses provide valuable insights into fluorosed enamel structure.