title: Plaque-free zones on human teeth in periodontitis.
abstract: The surface morphology of the pocket area of extracted, periodontally involved, human teeth was studied with steromicroscope. A plaque-free zone was found to be present in all specimens. The width of the plaque-free zone was found to decrease as the pocket depth and loss of attachment increase.
mesh_terms: D003773:Dental Plaque / Q000473:pathology*; D005881:Gingiva / Q000473:pathology; D005888:Gingival Pocket / Q000473:pathology; D006801:Humans; D010513:Periodontal Ligament / Q000473:pathology; D010518:Periodontitis / Q000473:pathology*; D010519:Periodontium / Q000473:pathology