Definition: The eruption of a tooth into an abnormal position, often impacting an adjacent tooth and preventing its complete eruption to the occlusal plane.
Radiographic Features:
- Location: Most commonly involves permanent first molars and primary second molars
- Edge: Well-defined
- Shape: May show cupping or resorption due to pressure from adjacent tooth
- Internal structure:
- Normal tooth structure (radiopaque)
- Radiolucent areas where resorption has occurred
- Other: None specific
- Number: Usually single, but may affect multiple teeth
Key points:
- Can lead to impaction of the affected tooth
- Often self-corrects in cases involving first permanent molars
- May cause premature loss of primary teeth if severe
- Can result in crowding or malocclusion if untreated
Clinical significance:
- Early detection is crucial for timely intervention
- May require orthodontic or surgical intervention if severe
- Can lead to space loss and alignment issues in the dental arch
- Treatment options depend on severity and stage of development
Note: Regular radiographic examinations during mixed dentition stage are important for early detection of ectopic eruption patterns. Monitoring and timely intervention can prevent more serious orthodontic problems.