Ameloblastic Fibro-Odontoma in a 4-Year-Old Boy.
BACKGROUND
Ameloblastic fibro-odontoma (AFO) is defined as a benign odontogenic tumor with slow growing behavior. Its prevalence is rare. AFO is characterized by histologic features of ameloblastic fibroma (AF) with the formation of enamel and dentine.


METHODS
This is a case report of AFO accompanied with a number of impacted deciduous teeth and its management in a 4-year old boy. Examination of oral cavity revealed an extensive swelling from midline to left deciduous maxillary first molar, covered with normal mucosa. Radiographic examination showed a well-defined mixed radiolucent-radiopaque lesion that extended horizontally from midline to mesial border of the left maxillary primary first molar and vertically from alveolar crest to the floor of nose. The differential diagnosis was odontoma (ameloblastic fibro-odontoma, complex odontoma). Surgical enucleation and curettage was performed under general anesthesia. Histopathologic sections show bone trabeculae in marrow spaces. There was myxoid matrix in some spaces which contained odontogenic epithelial cells. These findings led to diagnosis of AFO. No sign of recurrence has been observed during the 12-month follow-up period.


CONCLUSIONS
Although AFO is a rare tumor, it is more prevalent in children's jaw. Conservative surgical treatment allowed the normal development of teeth.
Department of Pedodontics, Dentistry School, Tehran University of Medical Sciences, Tehran, IR Iran.
Mehdi
M
Ghandehari-Motlagh
Department of Pedodontics, Dentistry School, Tehran University of Medical Sciences, Tehran, IR Iran.
Zahra
Z
Khosravi
Department of Pedodontics, Dentistry School, Tehran University of Medical Sciences, Tehran, IR Iran.
Ghasem
G
Meighani
Department of Pedodontics, Dentistry School, Tehran University of Medical Sciences, Tehran, IR Iran.
Yahya
Y
Baradaran-Nakhjavani
Ameloblastic Fibro-Odontoma; Odontogenic Tumor; Odontoma