Evaluation of Three Irrigants, Sodium Hypochlorite, Chlorhexidine and Combination of CHX+H2O2 in Endodontic Treatment.

After a thorough history, clinical and radiographic examination with all eligibility confirmation, written informed consent will be taken from the patient after explaining the procedure and its associated risks and benefits. Patients randomly allocated to one of the three study groups Sodium hypochlorite (NaOCl), Chlorhexidine (CHX) and combination of (CHX+H2O2). All three irrigants will be used according to standard protocol during biomechanical preparation. Pain analysis will be carried out preoperatively and postoperatively at every 6 hours for 1 day and then every 24 hours till 7 days after the intervention. All the subjects will be followed up for evaluation of clinical and radiographic success at 3, 6 months and 1year.