Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
Oral and Dental Health Hospital, Kayseri, Turkey.
J Endod. 2018 Aug;44(8):1210-1215. doi: 10.1016/j.joen.2018.04.019. Epub 2018 Jun 20.
This study compared the effect of conventional needle irrigation (positive pressure) and the EndoVac system (Discus Dental, Culver City, CA) (negative pressure) on postoperative pain in mandibular molar teeth with symptomatic irreversible pulpitis.
One hundred sixteen patients with symptomatic irreversible pulpitis were selected. Teeth were randomly assigned to 2 groups according to the irrigation methods performed during root canal preparation. In group 1, root canal irrigation was performed using a syringe and a 31-G side-port needle (NaviTip; Ultradent, South Jordan, UT). In group 2, the EndoVac system was used for irrigation. Teeth were then obturated with gutta-percha and a resin-based sealer using the cold lateral compaction technique. The presence of postoperative pain was assessed after 6, 24, 48, and 72 hours and 1 week.
At 6-, 24-, and 48-hour time intervals, group 1 patients reported more intense postoperative pain than patients in group 2 (P < .05). There was no significant difference between the 2 groups at the other time intervals (P > .05), and in both groups the intensity of postoperative pain decreased over time.
Apical positive pressure irrigation caused greater postoperative pain after endodontic therapy of mandibular molar teeth with symptomatic irreversible pulpitis compared with the apical negative pressure irrigation system.
本研究比较了传统的针管冲洗（正压）和 EndoVac 系统（加利福尼亚州卡尔弗城 Discus Dental）（负压）对有症状不可复性牙髓炎的下颌磨牙根管治疗术后疼痛的影响。
选择 116 例有症状不可复性牙髓炎患者。根据根管预备过程中的冲洗方法，将牙齿随机分为 2 组。在第 1 组中，使用注射器和 31-G 侧孔针（NaviTip；Ultradent，南约旦，犹他州）进行根管冲洗。在第 2 组中，使用 EndoVac 系统进行冲洗。然后使用冷侧压技术用牙胶和树脂基密封剂进行根管充填。术后 6、24、48 和 72 小时和 1 周评估术后疼痛的存在。
在 6、24 和 48 小时的时间间隔内，第 1 组患者报告的术后疼痛比第 2 组患者更剧烈（P <.05）。在其他时间间隔两组之间没有显著差异（P >.05），并且两组的术后疼痛强度随时间降低。
与根尖负压冲洗系统相比，有症状不可复性牙髓炎的下颌磨牙根管治疗后，根尖正压冲洗会引起更大的术后疼痛。
