[Studies on root surface areas of extracted teeth with periodontal problems].
D001862:Bone Resorption / Q000473:pathology*; D004846:Epithelial Attachment / Q000473:pathology; D006801:Humans; D010510:Periodontal Diseases / Q000473:pathology*; D010514:Periodontal Pocket / Q000473:pathology; D013499:Surface Properties; D014092:Tooth Root / Q000473:pathology*