Journal
EUROPEAN JOURNAL OF ORAL SCIENCES
Volume 110, Issue 5, Pages 345-352Publisher
WILEY
DOI: 10.1034/j.1600-0722.2002.21361.x
Keywords
bacteria; periodontal; epidemiology; odds ratios
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We sought to determine (i) the association of subgingival bacterial profiles to clinical periodontal status in a population with limited access to dental care in Thailand, and (ii) the external validity of our earlier findings from a similar study in rural China. We examined 356 subjects, 30-39 yr old and 50-59 yr old, with respect to clinical periodental status and subgingival plaque at maximally 14 sites per subject. Checkerboard hybridizations were used to analyse a total of 4343 samples. The prevalence of the 27 species investigated ranged between 87.2% and 100%. Discriminant analysis based on microbial profiles classified correctly 67.5% of all deep (greater than or equal to 5 mm) and 64.2% of all shallow sites, and 67.4% of all subjects with and 69.3% of all subjects without greater than or equal to 3 deep pockets. High colonization by 'red complex' bacteria was four times as likely (95% Confidence Limits (CL) 2.5-6.6) in subjects with greater than or equal to 10 sites with attachment loss of greater than or equal to5 mm, and 4.3 times as likely (95% CL 2.6-7.1) in subjects with greater than or equal to 30 such sites. The data confirmed (i) the ubiquitous prevalence of the bacteria investigated in subjects with no regular access' to dental care; and (ii) the high odds for periodontal pathology conferred by increased levels of specific periodontal bacteria.
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