[Frequency and histological differentiation of odontogenic tumors in the growth period. Results of an 11-year study].

57 patients with odontogenic tumours were treated in the Department for Oral Surgery in Berne, Switzerland from 1975-1985. One third of them was between 4-19 years of age. The greatest entity was the ameloblastic-ectomesenchymal tumour with 62%, ectomesenchymal-mesenchymal tumours did not appear during the years of growth. The average age increased in the following order: ameloblastic-ectomesenchymal, mesenchymal, ectomesenchymal-mesenchymal and ameloblastic tumours. We recommend radical surgical treatment for ameloblastomas, odontogenic myxomas and odontogenic fibromas whereas a conservative surgical approach is sufficient for all other odontogenic tumours.