Long-term follow-up of peripheral ossifying fibroma: report of three cases.

Peripheral ossifying fibroma is a non-neoplastic enlargement of the gingiva that is classified as a reactive hyperplastic inflammatory lesion. It is possible to misdiagnose peripheral ossifying fibroma as pyogenic granuloma, peripheral giant cell granuloma, or odontogenic tumors. Therefore, histopathological examination is essential for an accurate diagnosis of such lesions. Differential diagnosis is important, because peripheral ossifying fibroma has a tendency to recur. This article describes three cases of peripheral ossifying fibroma, which were followed for 4 years without any sign of recurrence. By presenting these cases, we emphasize the importance of proper excision and aggressive curettage of the adjacent tissues for prevention of recurrence.