Abstract: Ameloblastic fibroodontoma (AFO) is a rare odontogenic tumor. It often occurrs at the age under twenty, male more than in female. It is mostly located in the maxilla and mandible, and more common in the mandible. It grows slowly with no symptoms. There is asymptomatic swelling in the maxillofacial region and it delays tooth eruption in the case with AFO. Xray examination always shows a cystic cavity in the jaw, with clear boundary. It is not easy to be differentiated from odontogenic tumors, such as ameloblastoma and keratocystic odontogenic tumor. Pathological examination shows that neoplasm was composed of proliferating odontogenic epithelium in a cellular ectomesenchymal tissue, similar to ameloblastic fibroma in form. Hard tissue component is similar to odontoma, dental structures resembling dentine and enamellike tissues. It has a low probability of malignancy. The most common treatment is surgical removal with low potential for recurrence. In this paper, one case with ameloblastic fibroodontoma was reported and the clinical features and treatment of ameloblastic fibroodontoma were investigated.

Key words: ameloblastic fibroodontoma, odontogenic tumor, clinical feature