Abstract
A 13-year-old girl sought dental consultation, complaining of absence of anterior lower teeth. On an intraoral examination, a swelling of hard consistency, measuring 15 × 10 mm was observed in the mandibular alveolar ridge, in the region of the absent teeth (#32 and #33). Periapical and panoramic radiographs showed a multilocular radiolucent area extending from tooth #34 to #44, associated with 3 unerupted teeth. Differential diagnosis included odontogenic myxoma and central giant cell lesion. An incisional biopsy was performed. The microscopic examination showed islands and anastomosing cords of odontogenic epithelium in a myxoid connective tissue, suggesting the diagnosis of ameloblastic fibroma. A computed tomography was performed and the lesion was surgically excised. Microscopically, the surgical specimen showed dentin and enamel matrix deposits, in addition to the odontogenic epithelium permeated by loose fibrous connective tissue. The diagnosis of ameloblastic fibro-odontoma was established. No recurrence was observed after 8 years of follow-up.
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