A case of peripheral ossifying fibroma (POF) in the mandibular gingiva of a 30-year-old man is described. The lesion was asymptomatic, firm, pinkish red and pedunculated histologically showing cellular, fibrous connective tissue stroma with calcified osseous and cementum-like calcifications. Lesions histologically similar to peripheral ossifying fibroma (POF) have been given various names in the existing literature. Therefore, the controversial varied nomenclature and possible etiopathogenesis of peripheral ossifying fibroma are discussed.

Accessory canals may not be the primary cause of transmission of infection in the inter-radicular area of primary molars. Other factors enhancing permeability of the pulpal floor may be of more significance and need evaluation on a larger scale.

Odontogenesis is a complex process wherein more than 200 genes are known to play a significant role in tooth development. An imbalance can lead to an abnormality in the number, size, shape or structure of the developing tooth/teeth. The presence of an extra dental lamina forms a supernumerary tooth. The supernumerary teeth are of two types: A rudimentary tooth where the supernumerary tooth does not resemble any tooth in the normal series or a supplemental tooth in which this anomalous tooth resembles one in the normal series. It is also very rare to encounter triple teeth in primary dentition. The union of these teeth may be through fusion, gemination, concrescence or a combination of fusion and gemination. Presented is a rare case of concrescence involving maxillary deciduous incisors and a supplemental tooth in a 7-year-old boy. The differential diagnosis, etiology, and complications of primary anterior triple teeth are discussed.

Objectives: Fibro-osseous lesions of the craniofacial complex comprise of a diverse, interesting and challenging group of conditions that pose difficulties in classification and treatment. The two most confused benign fibro-osseous lesions are fibrous dysplasia and ossifying fibroma. Sometimes, the classic clinical, radiologic or pathologic features of fibrous dysplasia or ossifying fibroma may not be evident, but overlapping features of both may be seen. The dilemma in diagnosis of these lesions rests in the bony trabeculae as well as in the fibrous stroma. Cases of fibrous dysplasia showing lamellated bony trabeculae and osteoblastic rimming have been reported which may confound diagnosis because of resemblance with ossifying fibroma. In the present study, an attempt has been made to demonstrate the fibrous element of these two lesions using histochemical stains. Study design: The sections of fibrous dysplasia & ossifying fibroma were stained with Haematoxylin and Eosin, Trichrome stain and Peracetic acid-aldehyde fuschin-modified Halmi stain. Result: The study revealed that the oxytalan fibers were more numerous in ossifying fibroma (seen with both Trichrome and modified Halmi stains). Conclusion: Although the ultimate diagnosis of fibrous dysplasia and ossifying fibroma is arrived at by correlating clinical, radiographic and routine histopathologic examination, the differences in the configuration of the stroma using histochemical stains may help in the diagnosis of these two lesions.