Retreatment of a maxillary lateral incisor with type II dens invaginatus: One-year follow-up

Dens invaginatus is a developmental dental anomaly that occurs when the enamel organ is folded into the dental papilla prior to calcification of dental tissues. Endodontic treatment of the teeth with dens invaginatus can be challenging and due to atypical and complex anatomy. This case report presents non-surgical endodontic treatment of maxillary lateral incisor with Oehlers Type II Dens Invaginatus. The anamnesis revealed that the maxillary left lateral incisor had root canal treatment in the past; however the symptoms remained. Radiographic and clinical examination revealed an inadequately filled accessory canal and a necrotic unfilled main canal surrounded by a large periapical lesion. Subsequently, endodontic treatment of the main and retreatment of the accessory canal was completed. One year of clinical and radiographical follow-up demonstrated an asymptomatic tooth with a healing periapical lesion. Keywords: Dens in Dente; Incisor; Invaginatus, Retreatment