Abstract
Periapical lesions related to dens invaginatus are rare and usually involve upper lateral incisors. Its malformation is caused by the invagination of the crown or root in odontogenesis. A 37-year-old female patient presented to the clinic with swelling in the anterior region of the maxilla. Radiographically, cystic lesion between teeth 1.1 and 1.2 was observed with the presence of an invaginated tooth associated with the 1.2. Pulp vitality was positive for both teeth. The lesion was enucleated, and anatomopathologic examination revealed a cystic lesion with a fibrous wall containing epithelial plaques similar to squamous odontogenic tumor and microabscesses. Ten months after surgery there was recurrence of the lesion, and a new enucleation was performed with curettage and removal of the dens invaginated. The histopathologic examination defined the diagnosis as a root cyst associated with a dens invaginated. It has been undergoing follow-up for 10 months with no signs of recurrence.
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