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Amelogenesis imperfecta: a scanning electron microscopic and histopathologic study.

Figen Seymen1, Basak Kiziltan

  • 1University of Istanbul, Faculty of Dentistry, Department of Pedodontics, Turkey. figenseymen@hotmail.com

The Journal of Clinical Pediatric Dentistry
|August 15, 2002
PubMed
Summary
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Amelogenesis imperfecta (AI) is a genetic enamel defect. Scanning electron microscopy revealed irregular enamel crystallites and surface defects, with minor dentinal and pulpal issues observed.

Area of Science:

  • Dentistry
  • Genetics
  • Biomaterials

Background:

  • Amelogenesis imperfecta (AI) is a group of inherited disorders affecting tooth enamel formation.
  • Accurate diagnosis and classification of AI subtypes are crucial for effective management.
  • Scanning electron microscopy (SEM) offers detailed insights into enamel ultrastructure.

Observation:

  • Primary teeth from three children diagnosed with AI were examined using SEM.
  • SEM analysis revealed significant enamel surface irregularities, including hypoplastic areas.
  • Enamel crystallite structure exhibited marked irregularities in all samples.

Findings:

  • Histopathological evaluation showed abnormal predentin with irregular canaliculi.
  • Internal resorption areas were observed within the pulp tissue.

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  • The primary defects were consistently located in the enamel, with secondary effects on dentin and pulp.

    • Implications:

    • SEM is a valuable diagnostic tool for characterizing AI ultrastructural defects.
    • Understanding these ultrastructural changes aids in classifying AI subtypes.
    • Findings highlight the primary impact of AI on enamel, with potential secondary effects on other dental tissues.