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2:55 م | Posted in
Bony Exsostosis




Exostosis is the formation of new bone on the surface of a bone. It can cause chronic pain ranging from mild to debilitatingly severe, depending on where they are located and what shape they are.

· Torus palatinus
· Mandibular tori
· Maxillary tori
· Buccal exostosis




* Torus palatinus :

- Palatal tori are usually present on the midline of the hard palate.
- Most palatal tori are less than 2 cm in diameter, but their size can change throughout life.
- The prevalence of palatal tori ranges from 9% - 60%
- More common than bony growths occurring on the mandible
, known as torus mandibularis.
- Common in female
.






* Mandibular tori :

- Bony growth in the mandible along the surface nearest to the tongue .
- Usually present near the premolars
and above the location of the mylohyoid muscle 's attachment to the mandible.
- In 90% of cases, there is a torus on both the left and right sides, making this finding an overwhelmingly bilateral
condition.
- The prevalence of mandibular tori ranges from 5% - 40% and are less common than bony growths occurring on the palate
- More common in male .




* Buccal exostosis :


- Formation of an exostosis (bone mass) on the outer, -facing side of the maxilla just above the teeth or the cheek-facing side of the mandble.
- Formation on the low jaw
occurs much less commonly than on the upper jaw . They are painless, but may contribute to periodontal disease if they become too large. They can be removed with surgery. Buccal exostoses have no malignant potential.
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