the aim of this study is to investigate the clinical outcomes of Minimally Invasive Non-Surgical Therapy(MINST) compared to Conventional non-surgical periodontal therapy (CNST)
• Patients with stage III pericdontitis, according to the American Academy of Periodontology (AAP) and the European Federation of Periodontology (EFP) periodontal classification system .
Medically free patients.
Non-smokers
Patients with good oral hygiene.
Pregnant or lactating females.
Patients with systemic diseases that might affect periodontal health
previous periodontal treatment within 6 months before baseline examination.
prior antibiotic regimen use within 1 month before baseline examination