Definition: A pathological process of tooth structure loss occurring within the pulp chamber and/or root canal.
Radiographic Features:
- Location: Any pulp chamber and/or root canal
- Edge:
- Well-defined
- Smooth outline
- Continuous with pulp chamber/root canal
- Shape: Round to linear
- Internal: Radiolucent
- Number: May be single or multiple
Key Diagnostic Signs:
- Enlarged pulp chamber and/or root canal
- Radiolucent area within tooth structure
Clinical Significance:
- Can lead to tooth weakening and potential fracture
- May progress to external tooth surface if left untreated
- Often asymptomatic, emphasizing importance of routine radiographs
- Requires prompt endodontic intervention to halt progression
Note: Differential diagnosis from external resorption is crucial. Internal resorption maintains smooth, well-defined edges continuous with the pulp space, while external resorption typically shows irregular margins.