Successful apexification technique in an immature tooth with dens in dente.

This is the first case report which documents the successful treatment by apexification of an immature permanent tooth with dens in dente. The patient, an 11-year-old boy in good health, presented with unilateral facial swelling and a "sore tooth." Clinical and radiographic examination revealed a partially erupted anomalous permanent canine with a radiolucent periapical area. After initial management with antibiotics, the anomalous structure within the canine was removed. Calcium hydroxide dressings were placed to facilitate apical closure. After 1 year the canal was filled with gutta-percha using a lateral condensation technique.