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A mandibular torus is a nodular bony protuberance that is found bilaterally along the lingual aspect of mandible in the bicuspid and/or molar region. Approximately 20% of the population have mandibular tori. They can vary in size. Most times, patients are unaware of their torus unless the overlying mucosa is ulcerated due to a traumatic injury or they are extremely large. The etiology of mandibular torus is not known although there may be a genetic influence. The prevalence of mandibular torus peaks during second and third decades of life. Additionally the prevalence has been correlated to both history of functional stresses including bruxism and number of teeth present in the mandible. Histologically the mandibular tori are made of dense cortical lamellar bone with fatty bone marrow spaces. Most mandibular tori are diagnosed clinically and no treatment is required however surgery may be needed to accommodate a lower partial or full denture if they are large and interfere with their construction.