Definition: Healing with fibrous tissue instead of bone after an extraction or surgery.
Location: Any location of a previous surgery or extraction. Sometimes seen at the apex of a tooth that has been endodontically treated and the area of infection/inflammation did not heal with bone.
Edge: Well-defined. The edges are said to look as if you are looking at a bundt pan giving them a ‘rolled’ appearance.
Shape: Round to ovoid.
Number: Typically single but may be multiple.
(Click on any image to enlarge)
(anterior to first premolar apex)
(near crest of alveolar ridge)