目的 对比根管治疗中应用iRoot SP单尖充填法、AH Plus热牙胶垂直加压充填法对患者术后疼痛水平的影响。方法 纳入2022年10月—2024年10月接受根管治疗的200例患者,根据填充方法的不同分为观察组（n=100,iRoot SP单尖充填法）和对照组（n=100,AH Plus热牙胶垂直加压充填法）,对比两组患者治疗后各阶段疼痛水平和术后3个月的治疗效果。结果 两组患者术前疼痛数字评分法（NRS）评分差异无统计学意义（P>0.05）;术后1、3、5、7 d,观察组NRS评分均低于对照组（P<0.05）。术后3个月,观察组治疗有效率为98%,高于对照组的90%（χ²=4.344,P<0.05）。结论 在根管治疗中采用iRoot SP单尖充填法可降低患者术后疼痛水平,术后3个月的治疗效果更好,优于传统AH Plus热牙胶垂直加压充填法。

Objective To compare the effects of iRoot SP single-cone filling method and AH Plus warm vertical condensation technique on postoperative pain levels in patients undergoing root canal treatment. Methods A total of 200 patients who underwent root canal treatment from October 2022 to October 2024 were enrolled and divided into an observation group （n=100, iRoot SP single-cone filling technique） and a control group （n=100, AH Plus warm vertical condensation technique） according to the different obturation methods. The pain levels at various stages after treatment and the treatment outcomes at three months postoperatively were compared between the two groups. Results Before the surgery, there was no statistically significant difference in the numerical rating scale （NRS） pain scores between the two groups of patients （P>0.05）. On days 1, 3, 5, and 7 postoperatively, the NRS scores in the observation group were significantly lower than those in the control group （P<0.05）. The treatment effectiveness rate in the observation group was 98%, which was higher than 90% in the control group （χ²=4.344, P<0.05）. Conclusion The use of iRoot SP single-cone filling method in root canal treatment can reduce postoperative pain levels in patients and result in better treatment outcomes 3 months postoperatively compared to the traditional AH Plus warm vertical condensation technique.