A case of non-vital infected dens invaginatus of the maxillary right lateral incisor with open apex, which presented with pain and swelling is presented. Although root growth and apical closure was achieved using calcium hydroxide, the periapical infection persisted and resolution was only achieved after apical curettage and apicectomy.
Dental pulp is prone to dystrophic mineralization; this mineralization can be so extensive that the entire root canal system is obliterated. As a result, root canal treatment can become a difficult if not impossible task. This article presents the endodontic management of a tooth with an obliterated pulp chamber and associated with a discharging sinus in a teenage patient. The role of a calcium hydroxide lining to induce mineralization and cause the obliteration of the pulpal space is also discussed.