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that portion of the processus alveolaris remaining in the edentulous mouth following resorption of the section containing the alveoli.
the part of the alveolar ridge that remains after the alveolar process has disappeared after extraction of the teeth.
re·sid·u·al ridge(rē-zidyū-ăl rij)
Remnant of the alveolar ridge after tooth extraction; resorbs over time in the absence of teeth.