The study included 70 systemically healthy individuals, as a test group of 35 patients with Stage 3, Grade A periodontitis and a control group of 35 individuals with no periodontal disease. Blood samples were taken for the examination of DNI, white blood cells (WBC), immature granulocytes (IG), procalcitonin, C-reactive protein (CRP), lymphocyte count and neutrophil count. For the patients with periodontitis, blood sample assays were repeated 3 months after NSPT.

The role of the Delta Neutrophil Index (DNI) in the pathogenesis and follow-up of periodontal disease has not been comprehensively documented. The study included 70 systemically healthy individuals, as a test group of 35 patients with Stage 3, Grade A periodontitis and a control group of 35 individuals with no periodontal disease. Blood samples were taken for the examination of DNI, white blood cells (WBC), immature granulocytes (IG), procalcitonin, C-reactive protein (CRP), lymphocyte count and neutrophil count. For the patients with periodontitis, blood sample assays were repeated 3 months after NSPT.

Inclusion Criteria:

• Patients diagnosed with periodontitis
• Patients have more than 20 teeth in the mouth
• Minimum age 18
• Maximum age 65

Exclusion Criteria:

• Patients with any systemic disease
• Active smokers
• Pregnant or breastfeeding
• Patients have used any antibiotic or anti-inflammatory drug in the last 6 months
• Patients have received any periodontal treatment in the last 6 months.