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Osteoma is a benign osteogenic tumor arising from the proliferation of cancellous or compact bone. In the facial bones, both central and peripheral osteomas have been described in the literature. Peripheral type of osteoma is the most common variant in the mandible, which occurs on the cortical bone surface. We present a case of a fourteen year old boy who had swelling on right and left parasymphyseal region. Radiographs revealed radiopacity having onion-peel appearance and histopathology gave the fi nal diagnosis of osteoma. Periosteal reaction giving rise to onion peel appearance on the radiograph has been reported in Ewing sarcoma, Garre's osteomyelitis and infantile cortical hyperostosis in the literature but our case shows that similar appearance can be there in osteoma as well.

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Odontome is most common benign odontogenic tumour. Radiographically and histologiclly it is characterized by production of mature enamel, dentin, cementum and pulp tissue. The structural relationship vary from nondescript mass of dental tissue referred to as complex odontome and multiple well-formed teeth (denticles) known as compound odontome. Odontomes are often found during routine radiographic investigations and are the most common cause of delayed eruption of the permanent teeth and sometimes it may itself erupt in the oral cavity. We are presenting a case series of complex odontomes with varied clinical features and radiographic appearances which may be helpful for the clinician to achieve accurate diagnosis in order to avoid subsequent complications.