Periodontopathic microorganisms in peripheric blood after scaling and root planing
: Gloria IneÃ‚Â´s Lafaurie
: Blackwell Synergy
Aim: The objective of this study was to evaluate the frequency of periodontopathic
and other subgingival anaerobic and facultative bacteria in the bloodstream following
scaling and root planing (SRP).
Material and Methods: Forty-two patients with severe generalized chronic
periodontitis (GChP) and generalized aggressive periodontitis (GAgP) were included
in the study. Four samples of peripheric blood were drawn from the cubital vein at
different times: Pre-treatment: immediately before the SRP procedure (T1),
immediately after treatment (T2), 15 min. post-treatment (T3) and 30 min. posttreatment
(T4). In order to identify the presence of microorganisms in blood,
subcultures were conducted under anaerobic conditions.
Results: 80.9% of the patients presented positive cultures after SRP and it occurred
more frequently immediately after treatment; however, 19% of the patients still had
microorganisms in the bloodstream 30 min. after the procedure. The periodontopathic
microorganisms more frequently identified were Porphyromonas gingivalis and
Micromonas micros. Campylobacter spp., Eikenella corrodens, Tannerella
forsythensis, Fusobacterium spp. and Prevotella intermedia were isolated less often.
Actinomyces spp. were also found frequently during bacteraemia after SRP.
Conclusions: SRP induced bacteraemia associated with anaerobic bacteria, especially
in patients with periodontal disease.
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