Antibacterial Effect and Postoperative Pain After Triton Irrigation Protocol in Necrotic Mandibular Molar

Inclusion Criteria: * Patients aged 18-45 years with no sex predilection * Medically free Patients with no systemic conditions that can affect post operative pain response. * Patients should not be taking any pain medications 24 hours before intervention * Positive patients' acceptance for participating in the study * Patient able to sign informed consent * Permanent mandibular molars diagnosis with pulpal necrosis with asymptomatic apical periodontitis. * Mandibular molars without any anatomical variations or severe curvatures with mesial roots configuration weine class 3 and a distal root with 2 distal canals Exclusion Criteria: * Medically compromised patients * Patients who have received antibiotic therapy within the last 2 weeks. * Pregnant or lactating women. * Patients with known allergy to any of the irrigants used. * Patients with swelling or acute peri-apical abscess or fistulous tract. * Teeth that have: * Wide or open apex . * Vital pulp tissue .