Figure 1.

A case of ECR-affected incisor with previous traumatic history. (A) The patient asked for assessment of maxillary anterior teeth after dental trauma. The mesial incisal angle was chipped away. No obvious cervical resorption was noted. (B) One year later the patient came to our department with a chief complaint of gingival swelling in maxillary anterior area for two weeks. A gutta percha point traced to the ECR in tooth 11 through the sinus tract. (C) CBCT showed that ECR was located at the disto-palatal side of the tooth. (D) Root canal treatment (RCT) was performed first and the gutta percha was removed below the resorption cavity. (E) Surgery was arranged. The granulated tissue was removed and the cavity was prepared. (F) The cavity was repaired with MTA and the root canal was backfilled with gutta percha. (G) Radiograph taken after the treatment. (H) 14-month follow-up. No recurrent ECR was noted in the radiograph. (I) The treatment also achieved esthetic results.