Predominant microflora associated with human dental periapical abscesses

Area of Science:

• Microbiology
• Oral Health
• Infectious Diseases

Background:

• Periapical abscesses are localized pus collections at the root apex.
• Understanding the microbial etiology is crucial for effective treatment.
• Previous studies have focused on mixed oral flora, but specific periapical abscess flora requires further elucidation.

Purpose of the Study:

• To characterize the microbial composition of periapical abscesses in teeth without concurrent periodontal disease.
• To identify predominant bacterial species within these specific dental infections.
• To investigate potential specific microbial patterns in periapical abscesses.

Main Methods:

• Permucosal aspiration was used to collect abscess contents.
• Samples were analyzed using anaerobic culturing techniques.
• Microscopic and biochemical methods were employed for bacterial identification.

Main Results:

• A mixed but relatively limited facultative and obligate anaerobic flora was identified.
• Fusobacterium nucleatum was frequently detected.
• Streptococcus mitis was also a common finding, often paired with Fusobacterium nucleatum.

Conclusions:

• Periapical abscesses harbor a distinct, albeit limited, anaerobic microbial community.
• Fusobacterium nucleatum and Streptococcus mitis represent a common bacterial pair in these infections.
• This specific flora may influence treatment strategies for periapical abscesses.