Nonsurgical endodontic treatment of a tooth with double dens in dente

A case of "double" dens in dente with an open apex and periapical lesion is reported. Nonsurgical endodontic treatment was performed. The canals were medicated for 5 months with calcium hydroxide before obturation with combined sectional and thermoplasticized warm gutta-percha. Follow-up revealed an asymptomatic patient and a reduction in size of the periapical lesion.