Definition: A hyperplasia of bone within the jaws.  Also referred to as a dense bony island.

Radiographic Features:

Location: Anywhere throughout the maxilla and mandible.

Edge: Well-defined to Well-localized, continuous with the surrounding bone trabeculae.

Shape: Does not always have a given shape, but may appear round, ovoid or irregular in shape.

Internal: Radiopaque, radiopacity of cancellous bone.

Other: None.

Number: May be single or multiple. If there are multiple sites throughout the maxilla and/or mandible, an underlying systemic condition such as Gardner’s Syndrome should be considered.

(Click image to enlarge)


(with arrow on right and without arrow on left)


(mesial to second molar)


(in edentulous area)