Bilateral external root resorption.

Root resorption in bilateral maxillary canines was diagnosed in two patients who had histories of orthodontic treatment of the canines when the patients were teenagers. Periodontal surgery exposed the resorbed root areas. Surface restorations and endodontic therapy using guttapercha as the filling material completed therapy. Five-year follow-up examinations disclosed successful results in both cases. This information should lead practitioners to attempt treatment when root resorption is diagnosed, as these teeth can be salvaged with total therapy.