Relationship between internal root resorption and dens in dente

The aim is to report the treatment and follow-up of three lateral incisors with internal root resorption and dens in dente as a possible cause for their development, managed by root canal treatment and apical obturation with MTA or gutta-percha. This case report presents three clinical cases in which dens invaginatus type 2 is shown as a potential cause for the development of internal root resorption. Two cases were filled with a MTA apical plug technique and one with gutta-percha, and all were follow-up through time. The incidence of the association of internal root resorption with dens invaginatus may be underestimated and should be studied. Dens in dente, dens invaginatus, internal root resorption, Mineral Trioxide Aggregate, palatal invagination.