Tek Vildan, Türker Sevinç Aktemur
Department of Endodontics, Faculty of Dentistry, Zonguldak Bülent Ecevit University, Zonguldak, Turkey.
Restor Dent Endod. 2019 Nov 29;45(1):e5. doi: 10.5395/rde.2020.45.e5. eCollection 2020 Feb.
The obturation quality of MTA, Biodentine, Total Fill BC root canal sealer (RCS), and warm gutta-percha (WGP) in teeth with simulated internal root resorption (IRR) was evaluated by using micro-computed tomography.
Standardized IRR cavities were created using 40 extracted maxillary central incisor teeth and randomly assigned into 4 groups ( = 10). IRR cavities were filled with MTA, Biodentine, Total Fill BC RCS (bulk-fill form) and WGP + Total Fill BC RCS. Percentage of voids between resorptive cavity walls and obturation material (external void), and inside the filling materials (internal voids) were measured.
Total Fill BC sealer in the bulk-fill form presented significantly highest values of external and internal void percentages ( < 0.05). Biodentine showed a significantly lowest external void percentage ( < 0.05). WGP + Total Fill BC RCS presented significantly lower values of internal void percentages than all groups ( < 0.05), except Biodentine ( > 0.05).
None of the filling materials were created void-free obturation in resorption cavities. Biodentine may favor its application in teeth with IRR over Angelus MTA and bulk-fill form of Total Fill BC.
通过微计算机断层扫描评估MTA、生物活性玻璃（Biodentine）、Total Fill BC根管封闭剂（RCS）和热牙胶（WGP）在模拟牙根内吸收（IRR）牙齿中的充填质量。
使用40颗拔除的上颌中切牙制作标准化的IRR洞形，并随机分为4组（每组n = 10）。IRR洞形分别用MTA、生物活性玻璃、Total Fill BC RCS（大容量充填形式）和WGP + Total Fill BC RCS充填。测量吸收腔壁与充填材料之间的空隙百分比（外部空隙）以及充填材料内部的空隙百分比（内部空隙）。
大容量充填形式的Total Fill BC封闭剂的外部和内部空隙百分比显著最高（P < 0.05）。生物活性玻璃显示出显著最低的外部空隙百分比（P < 0.05）。WGP + Total Fill BC RCS的内部空隙百分比值显著低于所有组（P < 0.05），生物活性玻璃组除外（P > 0.05）。
在吸收腔中，没有一种充填材料能实现无空隙充填。与Angelus MTA和Total Fill BC的大容量充填形式相比，生物活性玻璃可能更适合应用于有IRR的牙齿。
