Type IIIb dens in dente endodontic retreatment: a case report

Dens in dente is a developmental anomaly characterized by dental tissues invagination that varies from a slight increase of the cingulum´s fossa to a deep groove that can extend up to the dental apex. Objectives The aim of this study was to report a dens in dente endodontic retreatment case with the presence of fistula and periapical lesion. Case report: Non-surgical retreatment was performed from the removal of the filling endodontic material, use of Calcium Hydroxide as intracanal medication changed every two months for a one year and a half period, and later, apical closure with MTA and endodontic filling of the remaining thirds with thermoplastic gutta-percha. Results: Postoperative follow-ups were performed for a 4 years period where a reduction of the periapical lesion diameter and disappearance of the fistula were observed. Conclusion: These results demonstrate that the present non-surgical dens in dente endodontic retreatment protocol could be considered a viable option for success.