Nonsurgical endodontic treatment of permanent maxillary incisors with immature apex and a large periapical lesion: a case report.

Immature teeth with necrotic pulp and large periapical lesions are difficult to treat via conventional endodontic therapy. However, they can be treated with calcium hydroxide and mineral trioxide aggregate (MTA). This article reports the case of a nonvital tooth with a periapical lesion and an open apex that was treated with a single-visit MTA apical plug. A radiographic evaluation taken 6 months post-treatment showed a decrease in the periapical lesion; at 1 year, complete healing was visible.