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Related Experiment Videos

Organic structures of developmental origin in human surface enamel.

B Nyvad1, O Fejerskov, K Josephsen

  • 1Department of Oral Anatomy, Dental Pathology and Operative Dentistry, Royal Dental College, Aarhus, Denmark.

Scandinavian Journal of Dental Research
|August 1, 1988
PubMed
Summary

Human enamel surfaces just before eruption are porous and contain developmental proteins. These organic structures influence ion diffusion, potentially impacting early caries development.

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Area of Science:

  • Dental Enamel Research
  • Biomineralization Studies
  • Oral Histology

Background:

  • Mature enamel surfaces prior to eruption are critical for understanding oral health.
  • The role of organic material in enamel structure and function requires further investigation.
  • Early caries lesion formation is influenced by enamel's microstructural properties.

Purpose of the Study:

  • To investigate the distribution and morphology of organic material in mature human enamel immediately before eruption.
  • To characterize the structural features of organic components within the enamel matrix.
  • To explore the potential implications of organic material distribution on enamel's susceptibility to demineralization.

Main Methods:

  • Analysis of 36 unerupted third molar enamel samples.

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  • Preparation using transmission electron microscopy (TEM).
  • Epon embedding followed by enamel demineralization for ultrastructural examination.

    • Main Results:

    • Human surface enamel at eruption is a highly porous structure.
    • Significant amounts of developmental protein are present within the enamel matrix.
    • Organic material exhibits diverse configurations, including triangular, funnel-shaped, and invaginated forms extending into the enamel.

    Conclusions:

    • Pre-eruption enamel possesses a porous microstructure rich in developmental proteins.
    • The observed organic structures may play a role in modifying ion diffusion across the enamel surface.
    • Understanding these organic components is crucial for comprehending early enamel caries development and prevention strategies.