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Scanning electron microscopic study of pulp stones in human permanent teeth
1Laboratoire d'Anatomie Pathologique, Faculté de Chirurgie Dentaire, Université Paris V, Montrouge, France.
Scanning Microscopy
|March 1, 1991
Summary
Scanning electron microscopy revealed diverse pulp stone morphologies and mineralization stages in dental pulp. These calcified formations exhibit varied structures, challenging traditional classification based solely on tubules.
Area of Science:
- Dentistry
- Biomineralization
- Dental Pulp Research
Background:
- Pulp stones are calcified formations within the dental pulp.
- Their morphology and formation mechanisms require further investigation.
Purpose of the Study:
- To characterize the ultrastructure and mineralization of pulp stones using scanning electron microscopy.
- To evaluate the reliability of tubules as a sole classification criterion for denticles.
Main Methods:
- Scanning electron microscopy (SEM) was employed to examine pulp stones.
- Analysis focused on size, shape, surface features, fracture characteristics, and mineralization patterns.
Main Results:
- Pulp stones displayed variable size, shape (round, oval, irregular), and organization (homogeneous, concentric, fibrous).
- Resorption zones were common on surfaces; fracture analysis revealed distinct structural patterns.
- Tubules were observed in both true and 'false' pulp stones, and cellular lacunae were identified.
- Mineralization involved crystal deposition on collagen and fusion of calcospherules.
Conclusions:
- Pulp stone classification should not rely exclusively on the presence or absence of tubules.
- SEM provides valuable insights into the complex ultrastructure and formation of pulp stones.