Kaloustian Marc Krikor, Nehme Walid, El Hachem Claire, Zogheib Carla, Ghosn Nabil, Michetti Jérôme, Naaman Alfred, Diemer Franck
Department of Endodontics, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
Department of Pediatric Dentistry, Faculty of Dentistry, Saint Joseph University, Beirut Po 11 5070, Lebanon.
Dent J (Basel). 2019 Jan 2;7(1):2. doi: 10.3390/dj7010002.
We assessed the efficiency of two shaping file systems and two passive ultrasonic irrigation (PUI) devices for removing filling material during retreatment. The mesial canals from 44 extracted mandibular molars were prepared and obturated. The teeth were randomly divided into two groups, and then one group was retreated with Reciproc R25 (VDW, Munich, Germany) (n = 44) and the other group was retreated with 2Shape (TS, Micro Mega, Besançon, France) (n = 44). A micro-computed tomography (CT) scan was taken before and after the retreatment to assess the volume of the filling material remnants. The teeth were then randomly divided into four groups to test two different PUI devices: Irrisafe (Satelec Acteon Group, Merignac, France) and Endo Ultra (Vista Dental Products, Racine, WI, USA). The teeth in Group A were retreated with 2Shape to test the Endo Ultra (n = 22) device, the teeth in Group B were retreated with 2Shape in order to test the Irrisafe (n = 22) device, the teeth in Group C were retreated with Reciproc to test the Endo Ultra (n = 22) device, and Group D was retreated with Reciproc to test the Irrisafe (n = 22) device. A third micro-CT scan was taken after the retreatment to test the PUIs. The percentage of Gutta-Percha (GP) and sealer removed was 94.75% for TS2 ( < 0.001) and 89.3% for R25 ( < 0.001). The PUI significantly enhanced the removal of the filling material by 0.76% for Group A ( < 0.001), 1.47% for Group B ( < 0.001), 2.61% for Group C ( < 0.001), and by 1.66% for Group D ( < 0.001). 2Shape was more effective at removing the GP and sealer during retreatment ( = 0.018). The supplementary approach with PUI significantly improved filling material removal, with no statistical difference between the four groups ( = 0.106).
我们评估了两种根管预备锉系统和两种被动超声冲洗（PUI）设备在再治疗过程中去除充填材料的效率。选取44颗拔除的下颌磨牙的近中根管进行预备和充填。将牙齿随机分为两组，一组用Reciproc R25（德国慕尼黑VDW公司）进行再治疗（n = 44），另一组用2Shape（法国贝桑松Micro Mega公司）进行再治疗（n = 44）。在再治疗前后进行微型计算机断层扫描（CT）以评估充填材料残留量。然后将牙齿随机分为四组以测试两种不同的PUI设备：Irrisafe（法国梅里尼亚克Satelec Acteon集团）和Endo Ultra（美国威斯康星州拉辛Vista Dental Products公司）。A组用2Shape进行再治疗以测试Endo Ultra设备（n = 22），B组用2Shape进行再治疗以测试Irrisafe设备（n = 22），C组用Reciproc进行再治疗以测试Endo Ultra设备（n = 22），D组用Reciproc进行再治疗以测试Irrisafe设备（n = 22）。再治疗后进行第三次微型CT扫描以测试PUI设备。TS2去除牙胶尖（GP）和封闭剂的百分比为94.75%（< 0.001），R25为89.3%（< 0.001）。PUI显著提高了充填材料的去除率，A组提高了0.76%（< 0.001），B组提高了1.47%（< 0.001），C组提高了
