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Idiopathic external resorption of teeth.
P D Owens1, K Wangrangsimakul, F V O'Brien
1School of Dentistry, Queen's University, Belfast, N. Ireland.
Journal of Oral Pathology
|September 1, 1988
Summary
This study examines idiopathic external resorption in an unerupted maxillary third molar. Ameloblasts, not multinucleate cells, are implicated in enamel resorption, suggesting a novel explanation for this dental condition.
Area of Science:
- Dental Microscopy
- Oral Pathology
- Tooth Development
Background:
- Idiopathic external resorption is an unexplained dental condition affecting tooth structure.
- Unerupted third molars are susceptible to various pathological processes.
Observation:
- A 57-year-old male's unerupted maxillary third molar exhibited radiographic signs of crown resorption.
- Microscopic examination (light and scanning electron microscopy) revealed pulpal granulation tissue and dentinal changes.
Findings:
- Scanning electron microscopy (SEM) showed uniform enamel resorption patterns.
- Ameloblasts, rather than multinucleate cells, were identified as the primary agents of enamel resorption.
- Evidence of dentinal resorption and metaplasia was observed.
Implications:
- The findings suggest ameloblast activity may explain the coronal origin and progression of idiopathic external resorption.
- This cellular mechanism could elucidate the pathway into the pulp and subsequent pulp reactions.
- Understanding this process may inform future diagnostic and therapeutic strategies for resorption.