Notching, like grooving, is caused by the developing tooth contacting the inferior alveolar canal. In this case, the tooth root develops directly above the canal. This is seen on a radiograph as a radiolucent third molar apex and loss of the top white line as the canal passes over the root. The dark apex may also indicate an open apex for young patients whose third molar roots are still developing. Notching increases the possibility of IAN paresthesia.
- Debride & Irrigate