The torus mandibularis is an exostosis or outgrowth of bone found on the lingual surface of the mandible. Just as in the case of the palatine torus, numerous causes have been suggested, but the etiology of the torus mandibularis is still unknown. It has been an idea held for many years that a torus mandibularis will develop as a reinforcement to the torsional stress created by heavy mastication.
This growth on the lingual surface of the mandible occurs above the mylohyoid line, usually apposite the bicuspid teeth. Line the palatine torus, it may vary considerably in size and shape. Although the mandibular tori are usually bilateral, they are seen as a unilateral condition in about 20 percent of cases. Both unilateral and bilateral protruberences may be single or multiple, and they are frequently visible on dental radio-graphs. there is no correlation in the frequency of simultaneous occurrence of torus palatinus and torus mandibularis, according to the studies of Kolas and co-workers, suggesting that the two conditions are not related. Suzuki and Sakai reported a highly significant correlation in the frequency of simultaneous occurrence of the two tori, however.
Surgical removal of the torus mandibularis may be necessary because of difficulties encountered in attempting to construct a denture over the outgrowth, although dental implants have greatly change treatment alternatives. The lesion is comparable to the torus palatinus in its benignity.
Paul L. Caputo, DDS3490 E Lake Rd S Suite A