The tori (meaning “to stand out” or “lump” in Latin) are exostosis that are formed by a dense cortical and limited amount of bone marrow, and they are covered with a thin and poorly vascularized mucosa.
They are usually located at the longitudinal ridge of the half palatine.
On the union of the palatine apophysis of the maxillae or on the internal side of the horizontal branch of the jaw, above the mylohyoid line and at the level of the premolar area and canine area, presenting a very slow and progressive growth that can stop spontaneously.
► See also: ORAL SURGERY : How To Remove A torus palatinus
Castro Reino et al. define it as a congenital bony protuberance with benign characteristics, leading to the “overworking” of osteoblasts and bone to be deposited along the line of fusion of the palate or on the hemimandibular bodies.
The discovery of these exostoses usually occurs incidentally during a routine clinical exam, as they usually do not produce any symptoms, except in cases of significant growth or in edentulous patients, in which case they may hinder the construction of the prosthesis.
Fuente: http://www.medicinaoral.com