Microbiological Response to Periodontal Therapy: A Retrospective Study

Area of Science:

• Periodontology
• Microbiology
• Oral Surgery

Background:

• Periodontitis is a bacterial infection causing periodontal structure destruction.
• Understanding pathogen dynamics is crucial for effective treatment.

Purpose of the Study:

• To evaluate the presence and bacterial load of six key periodontal pathogens.
• Assess changes before and after osseous surgery in chronic periodontitis patients.

Main Methods:

• Cohort study of 38 severe chronic periodontitis patients.
• Microbiological testing (Real-time PCR) for six pathogens pre- and post-surgery.
• Analysis of bacterial load and clinical parameters (probing depth, bleeding, suppuration).

Main Results:

• Osseous surgery led to significant reduction in probing depth, bleeding, and suppuration.
• Total bacterial load and pathogen counts decreased significantly post-surgery.
• Some pathogens (Aa, Pi) showed greater resistance; correlations found between clinical improvements and specific pathogen loads.

Conclusions:

• Osseous surgery effectively reduces periodontal pathogens and pocket depth.
• Lowering bacterial load is essential for achieving and maintaining periodontal stability.
• This approach supports long-term successful periodontal treatment outcomes.