Odontogenic tumours: a 15-year review from Ibadan, Nigeria.

OBJECTIVE

To establish the incidence of odontogenic tumours in Nigeria we present our experience during the 15-year period 1980-94.

DESIGN

Retrospective review of histopathological specimens and case notes.

SETTING

Teaching hospital, Nigeria.

SUBJECTS

128 Patients with histologically confirmed odontogenic tumours out of a total of 415 with tumours of the mouth and jaw.

MAIN OUTCOME MEASURES

Incidence, treatment, and recurrence rate.

RESULTS

Ameloblastoma (n = 21, 16%) and adenomatoid tumour (n = 16, 13%). Patients' ages ranged from 8 to 75 years (mean 33 for ameloblastoma, 31 for fibromyxoma, and 22 for adenomatoid tumour). The corresponding male:female ratios were 3:2, 2:3, and 1:1, and maxilla:mandible ratios 1:9, 1.1:1, and 2:1. The more radical the resection of ameloblastomas the less likely were they to recur.

CONCLUSION

Further research is required to explain the high incidence of odontogenic tumours in Nigeria, particularly ameloblastomas.