Comparative evaluation of intracanal Saline as final irrigation at 2-4°C and 13-15°C Versus Room-Temperature on Post-Operative Pain over 48 Hours in Single visit Pulpectomy: A Parallel three arm Randomized Clinical Trial.

This randomized, double-blinded clinical trial aims to assess whether using cold saline as a final irrigant during single-visit pulpectomy reduces post-operative pain in children aged 4 to 8 years. The study involves 66 participants divided equally into three groups: one receiving room-temperature saline, and the other two receiving saline cooled to 2–4°C and 13–15°C, respectively. All children undergo standard pulpectomy procedures, including anesthesia, rubber dam isolation, caries removal, canal instrumentation, and irrigation. Final irrigation is performed with 20 ml of saline for 5 minutes, with temperature maintained using thermal flasks and verified with thermometers. To collect pain data, the Wong-Baker Faces Pain Scale is used, which helps children communicate pain intensity by pointing to facial expressions. Each participant’s guardian receives a pain assessment form to record the child’s pain levels at 6, 12, 24, and 48 hours post-operatively. These recordings are confirmed through scheduled video calls with a blinded evaluator to ensure accuracy and reduce recall bias. Additional forms include the patient information sheet, informed consent form, and case record form. The study also tracks whether pain medication was needed. The expected outcome is a reduction in post-operative pain and analgesic requirement in both cryotherapy groups compared to the control group.