To assess the impact of Fill Mouth Scaling and Root planing or Quadrant Scaling and Root planing gingival crevicular fluid (GCF) levels of miRNA 7a-5p, miRNA 21-3p, miRNA 21-5p, miRNA 100-5p, miRNA 125-5p, miRNA 200b-3p and miRNA 200b-5p and their correlation with periodontitis extent.

The patients selected for the study were divided into 2 groups: group 1 (FM-SRP), group 2 (Q-SRP). Any selected subject underwent anamnestic and periodontal examination, blood and GCF sampling. MiRNA in the GCF was extracted through a commercially available kit and then measured carrying out real-time quantitative polymerase chain reaction (RT-PCR).

Inclusion Criteria:

• Presence of at least 15 teeth

• CP with a minimum of 40% of sites with a clinical attachment level (CAL)

  ≥2mm and probing depth (PD) ≥4mm;

• Presence of at least ≥2 mm of crestal alveolar bone loss verified on digital periapical radiographs

• Presence of ≥40% sites with bleeding on probing (BOP)

Exclusion Criteria:

• Intake of contraceptives
• Intake of immunosuppressive or anti-inflammatory drugs throughout the last three months prior to the study
• Status of pregnancy or lactation
• Previous history of excessive drinking
• Allergy to local anaesthetic
• Intake of drugs that may potentially determine gingival hyperplasia such as Hydantoin, Nifedipine, Cyclosporin A or similar drugs.

Q-SRP (no. 44 patients), FM-SRP (no. 45 patients)

all collected IPD, all IPD that underlie results in a publication