Central Ossifying Fibroma of Mandible - a Case Report

Central cementifying fibroma is a rare non odontogenic tumor coming in the group of fibro osseous lesion, arising from periodontal ligament and is usually seen in tooth bearing area. It can affect both the mandible and the maxilla, particularly the mandible. This bone tumour consists of highly cellular, fibrous tissue that contains varying amounts of calcified tissue resembling bone, cementum or both. Here we present a case of Central cementifying fibroma (recurrent) in a 34 year old female. Introduction In 1971 WHO classified four types of cementumcontaining lesions: fibrous dysplasia, ossifying fibroma, cementifying fibroma and cemento-ossifying fibroma. According to the second WHO classification, benign fibro-osseous lesions in the oral and maxillofacial regions were divided into two categories, osteogenic neoplasm and nonneoplastic bone lesions; cementifying ossifying fibroma belonged to the former category. However, the term ‘‘cementifying ossifying fibroma’’ was reduced to Ossifying fibroma[ OF ] in the new WHO classification in 2005. The origin of OF is thought to be the periodontal membrane. Some Ossifying fibromass do, in fact, contain prevalent cementum-like calcifications and others show only bony material, but a mixture of the two types of calcification is commonly seen in a single lesion. It can occur at any age, however, many authors confirmed that OF of the jaw tended to occur middle-aged patients. OF of the jaw bone shows a predilection for females. OF predominantly affects the craniofacial bone and rarely involves the long bones.