Nekoofar Mohammad H, Sheykhrezae Mohammad S, Meraji Naghmeh, Jamee Azad, Shirvani Armin, Jamee Javid, Dummer Paul M H
Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran; Endodontology Research Group, School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, United Kingdom.
Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
J Endod. 2015 May;41(5):575-8. doi: 10.1016/j.joen.2014.12.026. Epub 2015 Feb 24.
WaveOne is a single-file reciprocating instrumentation system with the benefits of M-Wire alloy that has increased flexibility and improved resistance to cyclic fatigue over the conventional alloy. Root canal preparation techniques may cause postoperative pain. The goal of the present study was to compare the intensity and duration of postoperative pain when using WaveOne or ProTaper Universal systems for instrumentation of root canals.
Forty-two patients who fulfilled specific inclusion criteria were assigned to 2 groups according to the root canal instrumentation technique used, WaveOne or ProTaper Universal. Root canal treatment was carried out in 2 appointments, and the severity of postoperative pain was assessed by numerical rating scale (NRS) score after each session until complete pain relief was achieved. Analgesic consumption, duration of pain, and root canal preparation time were also recorded.
The mean NRS score and duration of pain after both appointments were significantly higher in the WaveOne group (P < .05); however, the mean analgesic consumption was only significantly higher in the WaveOne group after the first appointment (P < .05). In all groups the highest mean NRS score was seen 6 hours after each therapeutic appointment. Canal preparation time was significantly shorter in the WaveOne group (P < .001).
Postoperative pain was significantly lower in patients undergoing canal instrumentation with ProTaper Universal rotary instruments compared with the WaveOne reciprocating single-file technique.
WaveOne是一种单支锉往复式根管预备系统，采用M-Wire合金，与传统合金相比具有更高的柔韧性和更好的抗循环疲劳性能。根管预备技术可能会导致术后疼痛。本研究的目的是比较使用WaveOne或ProTaper Universal系统进行根管预备时术后疼痛的强度和持续时间。
42例符合特定纳入标准的患者根据所使用的根管预备技术（WaveOne或ProTaper Universal）分为两组。根管治疗分两次进行，每次治疗后通过数字评分量表（NRS）评分评估术后疼痛的严重程度，直至疼痛完全缓解。记录镇痛药物的消耗量、疼痛持续时间和根管预备时间。
WaveOne组两次治疗后的平均NRS评分和疼痛持续时间均显著更高（P <.05）；然而，WaveOne组仅在第一次治疗后的平均镇痛药物消耗量显著更高（P <.05）。在所有组中，每次治疗后6小时的平均NRS评分最高。WaveOne组的根管预备时间显著更短（P <.001）。
与WaveOne往复式单支锉技术相比，使用ProTaper Universal旋转器械进行根管预备的患者术后疼痛明显更低。
