ABSTRACT
The purpose of this investigation was to study the microflora of severe, moderate and minimal periodontal lesions, in young adults with rapidly progressive periodontitis (RPP). Subgingival plaque samples were taken from 142 periodontal lesions in 10 young adults aging 25 to 35 years. The examination of the subgingival microflora indicated that certain species, including Porphyromonas gingivalis, Bacteroides forsythus, Fusobacterium nucleatum, Actinobacillus actinomycetemcomitans, and Campylobacter species were found to be predominant in severe periodontal lesions. B. forsythus, P. gingivalis, Prevotella intermedia, F. nucleatum, Capnocytophaga ochracea, were predominant in medium lesions while Streptococcus species and Actinomyces species, C. ochracea, Haemophilus segnis and Veillonella parvula, were found in higher levels in minimal periodontal lesions.
Subject(s)
Bacteria/isolation & purification , Periodontitis/microbiology , Actinomyces/isolation & purification , Adult , Aggregatibacter actinomycetemcomitans/isolation & purification , Alveolar Bone Loss/microbiology , Alveolar Bone Loss/pathology , Bacteroides/isolation & purification , Campylobacter/isolation & purification , Dental Plaque/microbiology , Female , Fusobacterium nucleatum/isolation & purification , Haemophilus/isolation & purification , Humans , Male , Periodontal Attachment Loss/microbiology , Periodontal Attachment Loss/pathology , Periodontitis/pathology , Porphyromonas gingivalis/isolation & purification , Streptococcus/isolation & purification , Veillonella/isolation & purificationABSTRACT
The microbial population in 73 rapidly progressive periodontitis (RPP) lesions in 10 young adults aged 25 to 35 years (5 males, 5 females) was studied in relation to the clinical parameters probing depth, bleeding on probing, and suppuration, which were recorded at the sampled sites. Porphyromonas gingivalis was found to predominate (26.7%) in 73 periodontal lesions with clinical probing depth > 6 mm, followed by Bacteroides forsythus (23.6%), and Prevotella intermedia (15.7%). The prevalence of P. gingivalis was 91.7%, Fusobacterium nucleatum, 90.4%; Streptococcus intermedius, 87.7%; and B. forsythus, 53.4%. Significant differences between bleeding index 0, 1, and 2 (P < 0.05) in frequency of detection were found for P. intermedia, Campylobacter concisus, Selenomonas sputigena, and Peptostreptococcus micros at bleeding sites and for Streptococcus sanguis, Actinobacillus actinomycetemcomitans, and B. forsythus (P < 0.001) at non-bleeding sites. Between suppurating and non-suppurating sites, significant differences (P < 0.05) in frequency of isolation were found for P. intermedia, Capnocytophaga ochracea, and A. actinomycetemcomitans at suppurating sites and for F. nucleatum at non-suppurating sites.
