Introduction
An exostosis is a peripheral overgrowth of bone that is benign and has
an undetermined cause. It may be an alveolar surface enlargement that is
nodular, flat, or pedunculated. Torus palatinus (TP), torus
mandibularis (TM), and alveolar bone exostoses (ABE) are the three
anatomical terms for these lesions in the jaws,
respectively.1
Occasionally the same person may develop multiple exostoses. In young,
dentate subjects, they may manifest as discrete, isolated bony growths
on the facial alveolar bone or, less frequently, as multiple exostoses
in the maxilla (torus palatinus) and mandible (mandibular
tori)2 (Table 1).