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a recess in the impression surface of a denture to reduce or eliminate pressure from that specific area of the mouth.
Farlex Partner Medical Dictionary © Farlex 2012
re·lief cham·ber(rĕ-lēf chāmbĕr)
Recess in impression surface of a denture to reduce pressure from that oral area.
Medical Dictionary for the Dental Professions © Farlex 2012