Classification schemes of fibro-osseous lesions of oral and maxillofacial regions

The term fibro-osseous lesion (FOL) is a generic designation of a group of jaw disorders characterized by the replacement of bone by a benign connective tissue matrix. This matrix displays varying degrees of mineralization in the form of woven bone or of cementum-like round acellular intensely basophilic structures. Diagnosis of these lesions based on histologic appearance alone has considerable limitations. Adequate clinical and para clinical observations, such as patient’s age, sex, location of the lesion, duration of symptoms, imaging characteristics, and histologic fi ndings are necessary to arrive at an accurate diagnosis. The aim of this review is to study the various classification systems given by various authors which will enable us to adopt a uniform terminology and improve communications between clinicians, pathologist and surgeons.