Abstract
The Japanese Society of Oral Oncology has established a working group for the guideline for odontogenic tumor.
We studied 5231 patients with odontogenic tumor. Histologically, the tumors contained 28.3% ameloblastoma, 24.4% keratocystic odontogenic tumor and 20.9% odontoma. Of these, we studied 947 patients with ameloblastoma. Histologically, solid/multicystic type was observed in 74.9%, unicystic type in 17.1%, desmoplastic (des) type in 4.1%, and extraosseous/peripheral type in 3%. The treatment modalities for ameloblastomas were both conservative surgery (83.6%) and radical surgery (73.8%). Finally, we have published the guideline for ameloblastoma in Japan.
