This study aims to assess the diagnostic potential of gingival crevicular fluid (GCF) biomarkers, specifically 8-iso Prostaglandin F2α (8-iso-PGF2α) and adenosine deaminase (ADA), in evaluating periodontal health and disease conditions.

Conducted as a single-blind, cross-sectional investigation, this study comprised 26 individuals categorized as periodontally healthy, 27 with gingivitis, and 27 diagnosed with periodontitis. The participant pool included individuals with various periodontal concerns who were referred to the Department of Periodontology Clinic at Kahramanmaraş Sütçü İmam University. The classification of periodontal health, gingivitis, and chronic periodontitis adhered to the 2018 criteria outlined by the European Federation of Periodontology

Inclusion Criteria:

• Patients having more than 20 teeth, minimum age 18, maximum age 65

Exclusion Criteria:

• Patients with systemic disease, Active smokers, Pregnant women, individuals with a history of orthodontic treatment, or those who had undergone periodontal treatment, regardless of whether it was surgical or non-surgical (within the last one year),