Evaluation of Postoperative Pain Following Root Canal Treatment Performed With and Without a Dental Operating Microscope: A Randomised Clinical Trial.

The aim of this study was to compare postoperative pain levels in patients with necrotic teeth after non-surgical root canal treatment (NSRCT) using or not using a dental operating microscope (DOM). One hundred patients with pulp necrosis and symptomatic apical periodontitis were randomly assigned to two groups (n = 50): Group 1 (DOM) and Group 2 (no DOM). Postoperative pain was measured using the Numeric Rating Scale (NRS) at 6 h, 12 h, 1 day, 3 days, and 7 days. The pain intensity was determined by calculating the mean pain score at each interval and was statistically analysed. The results showed no significant difference in pain intensity between the two groups. However, gender and tooth type affected pain levels at 6 h, 12 h, and 1 day. In conclusion, using a DOM during NSRCT did not significantly reduce postoperative pain.