Peripheral ossifying fibroma

Peripheral ossifying fibroma has a high degree of cellularity and dystropic calcification. Peripheral ossifying fibroma occurs  on the gingiva and may contain oxytalan fibres..

Clinical features:

Peripheral ossifying fibroma ocurrs at any age and is seen commonly in children and in young adults.It shows a predilection in females by a ratio ranging from 2:1 to 3:2..Equally seen in the maxilla and the mandible..It is a well demarcated focal mass of tissue on the gingiva with a sessile or peduculated base.It is of the same colour as normal gingiva or slightly reddened.The surface may be intact or ulcerated.It most commonly originates from the interdental papilla.

Roentgenographic features:

There is no apparent underlying bone involvement visible on the roentgenogram.There is a superficial erosion of the bone.

Histologic features:

There is an ulcerated layer of stratified squamous epithelium.The cellular mass consists of large numbers of plump proliferating fibroblasts throughout a very delicate fibrillar stroma.Several forms of calcification occurs in this lesion.The calcification may be in the form of single or multiple interconnecting trabeculae of bone or osteoid.There are also multinucleated giant cells found sometimes.

Treatment and prognosis:

The lesions must be surgically excised and extraction of adjacent teeth are done if need arises.