Complex treatment of dens invaginatus type III in maxillary lateral incisor

The complex anatomy and diagnosis of dens invaginatus make endodontic treat ment of such teeth difficult. This case describes combined nonsurgical and surgical treatment of a maxillary lateral incisor with a normally shaped ca nal and a dens invaginatus type In with a lateroradicular lesion. The root canal was treated conventionally with gutta-percha and a zinc oxide-eugenol sealer. The root was surgically exposed and the canal of the dens invagina tus was cleaned, instrumented and obturated with gutta-percha and a zinc ox ide-eugenol sealer. At follow-up 3 years 6 months later, the tooth was asym ptomatic and radiographically showed repair of the lesion in the region of the dens invaginatus.