title: Prevalence of Peptostreptococcus micros morphotypes in patients with adult periodontitis.
abstract: The prevalence of the smooth and rough colonial morphotypes of Peptostreptococcus micros was examined with culture technique in 123 patients with adult periodontitis (age 24-68 years). Of all subgingival samples, 91% contained the smooth morphotype of P. micros. The smooth morphotype constituted a mean percentage of the total anaerobic viable biota of 6.0%, with a range of 0.02-35.7%. Of these samples, 49% contained colonies of the rough morphotype as well, with a mean percentage of the total anaerobic viable biota of 2.3% (range 0.01-16.2%). None of the samples contained only the rough morphotype. The total percentage of P. micros varied from 0.02-35.71% with a mean of 7.2%. No correlation was found between the prevalence of both morphotypes of P. micros and the age of the subjects or with loss of attachment or pocket depth.
authors.affiliation: Department of Oral Microbiology, Academic Centre for Dentistry Amsterdam, The Netherlands.
authors.forename: P J
authors.initials: PJ
authors.lastname: van Dalen
authors.forename: A J
authors.initials: AJ
authors.lastname: van Winkelhoff
authors.forename: T J
authors.initials: TJ
authors.lastname: van Steenbergen
mesh_terms: D000328:Adult; D000368:Aged; D005881:Gingiva / Q000382:microbiology; D016908:Gram-Positive Bacterial Infections / Q000453:epidemiology / Q000382:microbiology*; D006801:Humans; D008875:Middle Aged; D010462:Peptostreptococcus / Q000145:classification* / Q000302:isolation & purification; D010518:Periodontitis / Q000453:epidemiology / Q000382:microbiology*; D015995:Prevalence