[Study of subgingival scaling. I. Clinico-pathological study of the periodontal tissue in scaling].
D003728:Dental Calculus / Q000628:therapy*; D003762:Dental Instruments; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010519:Periodontium / Q000473:pathology*; D014465:Ultrasonics