Ossifying fibroma of the mandible and maxilla: review of 18 cases.

A clinical, radiographic, histologic and follow up study of 18 cases of ossifying fibroma involving the mandible and maxilla was performed. Differences in behavior and management according to age, location, radiographic appearance and histopathology were not evident. A wide range of microscopic findings within and between cases was evident, while the radiographic finding consisting of sharp delineation was consistent in all cases. The presence or absence of cementum or cementum-like material and various types of formed elements was likewise of little clinical significance. Finally, a potential source of the neoplastic cell from the periodontal apparatus may help explain the range of histologic findings.