Clinical, radiologic, and histologic studies were performed in eight cases of ameloblastoma in patients younger than 16 years of age. The mean age of the patients was 10.8 years, equal numbers of males and females were affected, and the most common location was the lower molar and ramus areas. Radiologically, a monocystic osteolytic image was observed in all cases. Histologically, two forms of growth were observed: an intramural, infiltrating, plexiform or follicular type, and a polypoid type, prolapsing toward the lumen of a cystic cavity. The ameloblastomas recurred in three cases a year after surgery.