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Human enamel structure studied by high resolution electron microscopy.

S L Wen1

  • 1Shanghai Institute of Ceramics, Academia Sinica, People's Republic of China.

Electron Microscopy Reviews
|January 1, 1989
PubMed
Summary

High-resolution electron microscopy reveals human enamel

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Area of Science:

  • Biomaterials Science
  • Crystallography
  • Dental Research

Background:

  • Human enamel, a biomineral, shares structural similarities with hydroxyapatite (Ca10(PO4)6(OH)2).
  • Understanding enamel's atomic and nanometer-level structure is crucial for dental health research.

Purpose of the Study:

  • To detail the structural characteristics of human enamel at atomic and nanometer scales.
  • To investigate the initiation and progression of dental caries at the crystal level.
  • To explore the mechanisms of enamel remineralization and radiation effects.

Main Methods:

  • High-resolution electron microscopy (HREM) was employed to analyze human enamel structure.
  • Detailed imaging and analysis of atomic and unit-cell level features.
  • Characterization of demineralization, remineralization, and radiation-induced structural changes.

Main Results:

  • The study provides detailed structural insights into human enamel crystals.
  • It elucidates the atomic-level initiation of caries through demineralization.
  • HREM visualization of remineralization processes and radiation effects on enamel structure.

Conclusions:

  • Human enamel's polycrystal structure is detailed at the atomic and nanometer levels.
  • Demineralization is identified as the origin of dental caries, with remineralization offering potential applications.
  • Radiation effects on enamel structure are characterized, with a proposed physical mechanism.

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