Giant Peripheral Temporomandibular Osteoma With Immediate Reconstruction of Mandible.

Osteoma is a benign osteogenic tumor, which is characterized the slow-growing proliferation of compact or cancellous bone. The etiology of the lesion is not well established. Among the hypotheses, the following are related: a traumatic factor, infectious processes, or true neoplasm due to the origin of cartilaginous cells. It can present at any age, usually in young adult individuals, with equal prevalence in both sexes. The clinical characteristics of the peripheral osteoma are represented by slow asymptomatic growth, which leads to swelling and, thus, facial asymmetry. When it is related to the mandibular condyle, this growth can cause functional impairment, such as malocclusion, temporomandibular joint dysfunction, and even limited mouth-opening owing to ankylosis.