Definition: Lamina dura (bony socket border) that has not resorbed after the extraction of a tooth.
Radiographic Features:
Location: Any site of previous tooth extraction.
Edge: Well-defined.
Shape: May appear to be outline of tooth roots, linear or curved if only a portion is remnant.
Internal: Radiopaque, radiopacity of cortical bone.
Other: May be associated with normal bone healing or sclerotic bone healing.
Number: May be single or multiple.
(click image to enlarge)
Remnant lamina dura
Remnant lamina dura
Remnant lamina dura
(mandibular left molar region)
What is happening in the left maxillary sinus on the pantomograph?
Increased radiopacity due to superimposition of other structures.