a localized abscess that arises in the periodontal tissues and is usually an acute manifestation of periodontal disease. It appears as a pocket of pus in the tissues of the gum but not around the apex of the tooth.... periodontal abscess
a compressible and easily carried mask, which can be expanded and fitted over the mouth and nose of a nonbreathing patient in order to perform mouth-to-mouth resuscitation through a small valve without contact between the mouth of the rescuer and that of the patient.... pocket resuscitation mask
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