Microbiological Analysis Following Periodontal Treatment in Individuals with Bronchiectasis

Area of Science:

• Oral microbiology
• Pulmonary medicine
• Infectious diseases

Background:

• Periodontal disease is linked to lung infections like COPD, but its connection to bronchiectasis is understudied.
• Bronchiectasis and COPD share clinical and pathophysiological traits, suggesting a potential link.

Purpose of the Study:

• To investigate the impact of periodontal treatment on salivary, sputum, and nasal microbial profiles in individuals with bronchiectasis.
• To assess changes in specific bacteria like Pseudomonas aeruginosa, Staphylococcus aureus, and Porphyromonas gingivalis.

Main Methods:

• A single-center, parallel-group randomized controlled trial involving 49 individuals with bronchiectasis.
• Participants were assigned to either mechanical periodontal treatment plus oral hygiene or oral hygiene alone.
• Microbial analysis of sputum, saliva, and nasal secretions, alongside periodontal and quality-of-life assessments, were conducted at baseline and three months.

Main Results:

• Periodontal treatment significantly improved gingival and plaque indices.
• No significant changes in the targeted microorganisms were observed in sputum samples.
• Reductions in Pseudomonas aeruginosa were noted in saliva and nasal secretions, and Porphyromonas gingivalis in nasal secretions.

Conclusions:

• Periodontal treatment positively impacts oral health and reduces specific bacteria in upper airways (saliva and nasal secretions) of bronchiectasis patients.
• The study did not find evidence of periodontal treatment affecting bacterial load in the lower airways (sputum) within the observed period.