Related Experiment Videos
[Bacteriological study of oral open abscesses]
1Institute of Anaerobic Bacteriology, Gifu University School of Medicine, Japan.
Summary
Bacteriological studies of open oral abscesses reveal polymicrobial infections, predominantly Streptococcus and Prevotella species. Many Prevotella isolates were resistant to beta-lactam antibiotics due to beta-lactamase production.
Area of Science:
- Oral microbiology
- Infectious diseases
- Bacteriology
Background:
- Limited research exists on the specific bacteria involved in open oral abscesses compared to closed ones.
- Understanding the microbial landscape of open oral abscesses is crucial for effective treatment strategies.
Observation:
- Three open oral abscess samples were carefully collected to prevent contamination from normal oral flora and saliva.
- Specimens underwent aerobic and anaerobic culturing within two hours of collection.
Findings:
- All three abscesses showed polymicrobial infections, with 5 to 14 aerobic and anaerobic bacterial species each.
- Streptococcus spp. and Prevotella spp. (including Prevotella intermedia) were the most common bacteria found.
- All six isolated Prevotella species produced beta-lactamase, conferring resistance to beta-lactam antibiotics.
Implications:
- Prompt anaerobic culturing is essential for accurate bacteriological diagnosis of open oral abscesses.
- The nitrocefin test is significant for identifying beta-lactamase production in oral isolates, particularly Prevotella species.
- These findings highlight the need to consider antibiotic resistance patterns in treating open oral infections.