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Pseudoramibacter alactolyticus in primary endodontic infections
José F Siqueira1, Isabela N Rôças
1Department of Endodontics, Faculty of Dentistry, Estácio de Sá University, Rio de Janeiro, RJ, Brazil.
Journal of Endodontics
|December 4, 2003
Summary
Pseudoramibacter alactolyticus was frequently detected in endodontic infections using nested polymerase chain reaction (PCR). This bacterium is a potential pathogen in various periradicular diseases.
Area of Science:
- Microbiology
- Endodontics
- Molecular Biology
Background:
- Endodontic infections involve complex microbial communities.
- Pseudoramibacter alactolyticus is a bacterium found in oral infections.
- Its role in endodontic disease requires further investigation.
Purpose of the Study:
- To investigate the prevalence of Pseudoramibacter alactolyticus in primary endodontic infections.
- To determine the association of P. alactolyticus with different clinical presentations of periradicular diseases.
- To assess P. alactolyticus as a potential endodontic pathogen.
Main Methods:
- A nested polymerase chain reaction (PCR) method was employed.
- Samples from root canals and periradicular abscesses were analyzed.
- Universal 16S rDNA primers were used for initial amplification, followed by P. alactolyticus-specific primers.
Main Results:
- P. alactolyticus was detected in 76% of asymptomatic periradicular lesions, 60% of acute apical periodontitis cases, and 32% of abscess pus samples.
- The bacterium was found in 56% of all endodontic infection samples.
- No significant correlation was observed between P. alactolyticus presence and clinical symptoms.
Conclusions:
- Pseudoramibacter alactolyticus is highly prevalent in endodontic infections.
- The findings suggest P. alactolyticus is a candidate endodontic pathogen.
- This bacterium may contribute to the etiology of periradicular diseases, especially in mixed infections.