Clinical management of a maxillary lateral incisor with vital pulp and type 3 dens invaginatus: a case report.

A maxillary right lateral incisor with a type 3 dens invaginatus and a large periapical lesion with vital pulp in a separate root canal was treated both nonsurgically and surgically. Care was taken not to expose or devitalize the vital pulp in the main root canal system during the treatment. The signs and symptoms ceased after the treatment, and 4-month recall showed complete bone healing with pulp vitality maintained.