Periodontitis is a chronic inflammatory disease of the tooth supporting structures induced by a dysbiosis in the oral and subgingival microenvironment of susceptible patients. The long-term swallowing of high doses of periodontal pathogenic microorganisms could induce a dysbiosis of the intestinal microbiota, favouring the establishment of an 'inflamed' microbiome in terms of composition and/or function. The present project is aimed at a better understanding of the etiopathogenetic correlation between periodontitis and intestinal dysbiosis, and aims to explore the hypothesis that non-surgical periodontal treatment may reduce bacterial alpha diversity in stool samples. Fifty patients affected by stage III-IV periodontitis will be recruited, and treated by means of full-mouth scaling and root planing. Salivary and stool samples, together with a complete periodontal charting and a food diary will be collected and compared at baseline and 3 months after treatment. Age, gender and BMI-matched healthy individuals will be recruited as controls.
Study Type
OBSERVATIONAL
Enrollment
94
Subgingival instrumentation with ultrasonic devices and curettes of all periodontal pockets
CIR Dental School
Turin, Italy
Changes in microbiome alpha diversity measured from stool samples at 3 months
Taxonomic and functional variation of gut bacteria after treatment
Time frame: [Time Frame: Baseline and 90 days]
Changes in microbiome alpha diversity measured from saliva samples at 3 months
Taxonomic and functional variation of salivary bacteria after treatment
Time frame: [Time Frame: Baseline and 90 days]
Changes in mean clinical attachment level (CAL) at 3 months
Variation in CAL after therapy assessed using a millimetre marked manual periodontal probe at 6 sites per tooth element
Time frame: [Time Frame: Baseline and 90 days]
Changes in periodontal pocket depth (PPD) at 3 months
Variation in PPD after therapy assessed using a millimetre marked manual periodontal probe at 6 sites per tooth element
Time frame: [Time Frame: Baseline and 90 days]
Changes in full mouth bleeding score (FMBS) at 3 months
Variation in the percentage of bleeding sites after therapy assessed by gentle probing at 6 sites per tooth element
Time frame: [Time Frame: Baseline and 90 days]
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