Definition: Fusion of a tooth root with surrounding alveolar bone due to absence of the periodontal ligament space.
Radiographic Features:
- Location:
- Can occur in any tooth
- Frequently seen in primary second molars
- Edge: Well-defined, normal tooth outline
- Shape: Toothlike
- Internal:
- Radiopaque
- Same radiopacity as normal tooth structure
- Number:
- Usually single
- Can be multiple
Key Diagnostic Signs:
- Absence of periodontal ligament space
- Potential step in the occlusal plane at the ankylosed tooth site
Clinical Significance:
- Can impede normal tooth eruption and orthodontic movement
- May lead to infraocclusion in growing patients
- Can affect alveolar bone development in the area
Note: Caution when diagnosing based solely on apparent absence of periodontal ligament space, as this can sometimes be due to radiographic technique. Clinical examination in conjunction with radiographs is crucial for accurate diagnosis.