Çanakçi Burhan Can, Er Ozgur, Dincer Asiye
Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
Department of Endodontics, Faculty of Dentistry, Trakya University, Edirne, Turkey.
J Endod. 2015 Sep;41(9):1507-9. doi: 10.1016/j.joen.2015.02.010. Epub 2015 Aug 1.
We evaluated apically extruded debris in the retreatment of root canals filled with different root canal sealers and gutta-percha using different solvents.
Ninety human mandibular central and lateral teeth were prepared using the Reciproc #25 .08 nickel-titanium system (VDW GmbH, Munich, Germany) and were divided randomly into 6 groups. In groups 1, 2, and 3, root canals were filled with epoxy resin-based sealer and gutta-percha, and in groups 4, 5, and 6, root canals were filled with zinc oxide-eugenol-based sealer and gutta-percha. Each tooth was placed in a glass vial experimental apparatus. All root canal fillings were removed with the ProTaper Retreatment nickel-titanium system (Dentsply Maillefer, Ballaigues, Switzerland). During the retreatment procedure, in group 1, Resosolv (Pierre Rolland, Merignac, France) was used; in group 4, Endosolv E (Septodont, Paris, France) was used; and in groups 2 and 5, Guttasolv (Septodont) was used as the solvent. In the control groups (groups 3 and 6), no solvent was used. Reciproc #40 .06 was used for the final preparation. The times required for retreatments were recorded.
The weight of the extruded debris and the time required for retreatment were decreased significantly in the groups in which a solvent that was intended specifically for the root canal sealer was used (groups 1 and 4). In the Guttasolv groups (groups 2 and 5), the amount of apically extruded debris and the time required decreased for both root canal sealers.
The amount of apically extruded debris and the duration of retreatment were reduced by the use of a solvent specific to the sealer compared with a gutta-percha solvent or no solvent.
我们评估了使用不同溶剂对充填有不同根管封闭剂和牙胶的根管进行再治疗时根尖挤出碎屑的情况。
使用Reciproc #25.08镍钛系统（德国慕尼黑VDW有限公司）对90颗人下颌中切牙和侧切牙进行预备，并随机分为6组。第1、2和3组根管充填环氧树脂类封闭剂和牙胶，第4、5和6组根管充填氧化锌丁香酚类封闭剂和牙胶。每颗牙齿置于玻璃小瓶实验装置中。使用ProTaper再治疗镍钛系统（瑞士拜莱格Dentsply Maillefer公司）去除所有根管充填物。在再治疗过程中，第1组使用Resosolv（法国梅里尼亚克Pierre Rolland公司）；第4组使用Endosolv E（法国巴黎Septodont公司）；第2和5组使用Guttasolv（Septodont公司）作为溶剂。对照组（第3和6组）不使用溶剂。使用Reciproc #40.06进行最终预备。记录再治疗所需时间。
使用专门针对根管封闭剂的溶剂的组（第1和4组），挤出碎屑的重量和再治疗所需时间显著减少。在Guttasolv组（第2和5组），两种根管封闭剂的根尖挤出碎屑量和所需时间均减少。
与使用牙胶溶剂或不使用溶剂相比，使用封闭剂专用溶剂可减少根尖挤出碎屑量和再治疗时间。
