Enostosis

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)

Enostosis

(with arrow on right and without arrow on left)

Enostosis

(mesial to second molar)

Enostosis

(in edentulous area)

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