Comparison of Post-Operative Pain Occurrence After Single Visit Root Canal Treatment

The goal of this clinical trial is to compare the post-operative pain occurrence after single visit root canal treatment using Two NiTi Rotary Files. The main question it aims to answer is: • Does an instrument design and instrumentation technique could affect postoperative pain incidence and intensity? Researchers will use ProTaper Universal rotary system or M-Pro rotary system for root canal preparation and compared postoperative pain intensity. Participants will receive single visit endodontic treatment using either ProTaper or MPro systems for root canal preparation. Participants will record Pain intensity at 24 hours and 7 days post-operative. Analgesics will be prescribed for the patients in need.