This page was last updated: November 1, 2019
Pictures of Buccal Exostoses of the
Mandible and Maxilla
Picture of Buccal Exostosis of the Mandible

What is the  difference between buccal exostosis, torus palatinus and torus mandibularis?

These entities are all very site-specific. The palatal torus is found only in the midline of the hard palate. The mandibular torus is found only on the lingual surface of the mandible, near the bicuspid teeth. The buccal exostosis is found only on the facial surface of the alveolar bone, usually the maxillary alveolus. Bony surface proliferations found in another site are typically given the generic diagnosis of bony exostosis or osteoma, i.e. are considered to be trauma-induced inflammatory periosteal reactions or true neoplasms. Unless such a bony prominence is specifically located, is pedunculated or is associated with an osteoma-producing syndrome such as the Gardner syndrome, there may be no means by which to differentiate an exostosis from an osteoma, even under the microscope.

Buccal exostoses are benign, broad-based surface masses of the outer or facial aspect of the upper jaw (maxilla) or, less commonly, the lower jaw.  They begin to develop in early adulthood and may very slowly enlarge over years.  They are painless and self-limiting, but occasionally may become several centimeters across and then contribute to periodontal disease of adjacent teeth by forcing food during chewing in toward the teeth instead of away from them, as is normally the case.  They usually require no treatment, but for those possibly contributing to a peridontal condition they can be removed by conservative surgical excision.  There is no malignant potential to this lesion. To learn more, click the following URL:
Buccal exostosis of the maxilla.

Bechara Y. Ghorayeb, MD
Otolaryngology - Head & Neck Surgery

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