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Regional odontodysplasia: new histopathological data
B Kerebel1, L M Kerebel, D Heron
1Unité de Recherches INSERM U. 225, Faculté de Chirurgie Dentaire, Université de Nantes, France.
Journal De Biologie Buccale
|June 1, 1989
Summary
Regional odontodysplasia in a child caused abnormal tooth development, including globular dentin and hypomineralized enamel. Calcifications were found in enlarged pulp chambers and dental follicles, suggesting altered tooth formation processes.
Area of Science:
- Dentistry
- Developmental Biology
- Pathology
Background:
- Regional odontodysplasia is a rare developmental anomaly affecting tooth formation.
- Understanding the microscopic changes in affected dental tissues is crucial for diagnosis and management.
Observation:
- Microscopic examination revealed widespread globular dentin and hypomineralized enamel in affected tooth follicles.
- Calcifications were observed within enlarged pulp chambers and scattered throughout the dental follicles, some associated with microfibrils.
- The enamel showed hypomineralized strands between normally mineralized layers, indicating interrupted amelogenesis.
Findings:
- The study identified significant enamel hypoplasia and hypomineralization, alongside globular dentin formation.
- Extensive calcifications were noted in pulp chambers and dental follicles, with some appearing within possible oxytalan fibers.
- Calcification of epithelial rests and fibroblast extensions suggest phagocytic activity in response to mineral deposition.
Implications:
- These findings highlight the complex histopathological changes in regional odontodysplasia.
- The observations provide insights into the disrupted amelogenesis and mineralization processes.
- Further research may elucidate the cellular mechanisms underlying these developmental abnormalities.