Sixty-three mandibular molars with vital pulp, symptomatic acute pain, and a Numerical Rating Scale (NRS) score of 7 or higher-requiring emergency treatment-were randomly allocated into three groups according to the preparation systems to be used: conventional manual instrumentation technique with hand files, reciprocating motion technique with WaveOne Gold files, and rotary motion technique with ProTaper Ultimate files. In the first session, patients received emergency treatment with one of the three file systems, and seven days later, root canal treatments were completed using the same system within each patient group. Preoperative pain scores of patients presenting to our clinic with acute pain were recorded using the Numerical Rating Scale (NRS). During the emergency root canal treatment session, the first group was instrumented with hand files, the second group with WaveOne Gold files, and the third group with ProTaper Ultimate files, and the emergency treatment session was completed. Shaping times were measured during the procedures. Following the emergency session, patients were instructed to record their postoperative pain at the 6th hour, 12th hour, and on the 1st, 2nd, 3rd, 4th, 5th, 6th, and 7th days using the provided NRS. One week after the emergency treatment session, root canal obturation was performed using each system's own gutta-percha and Bioceramic root canal sealer. Clinical and radiographic follow-ups were carried out at 6 and 12 months.
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The incidence and intensity of post-obturation pain
Timeframe: up to 30-day