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)
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What is happening in the left maxillary sinus on the pantomograph?
Increased radiopacity due to superimposition of other structures.