Arıcan Burçin, Sesen Uslu Yesim, Sarıalioğlu Güngör Ayça
Department of Endodontics, School of Dental Medicine, Bahçeşehir University, Istanbul, Turkey.
Department of Restorative Dentistry, School of Dental Medicine, Bahçeşehir University, Istanbul, Turkey.
Aust Endod J. 2023 Apr;49(1):174-182. doi: 10.1111/aej.12714. Epub 2022 Nov 10.
The aim of the study was to evaluate the fracture resistance (FR) of teeth with simulated external cervical resorption (ECR) cavities repaired with different materials. Following the shaping of the 80 human permanent maxillary central incisors, standard ECR cavities were prepared and restored with a nanohybrid composite resin; a high viscosity GIC Equia Forte Fill; Biodentine; Biodentine + nanohybrid composite resin; MTA BIOREP; MTA BIOREP + nanohybrid composite resin. Then, the root canals were obturated with AH Plus and gutta-percha. The roots were embedded acrylic resin blocks and fracture strength test was applied. The highest FR was observed in the Biodentine group, while the lowest was in Equia group (p < 0.05). No significant results were observed among composite, Biodentine + composite, MTA BIOREP + composite and MTA BIOREP (p > 0.05). Biodentine may be a preferable material for repairing ECR cavities. Adding a composite layer on MTA BIOREP and Biodentine did not improve the FR of these materials.
本研究的目的是评估用不同材料修复的模拟外吸收性颈缘缺损（ECR）患牙的抗折强度（FR）。在对80颗人类上颌恒中切牙进行塑形后，制备标准的ECR洞形，并用纳米混合复合树脂、高粘度玻璃离子粘固剂Equia Forte Fill、生物活性玻璃离子水门汀Biodentine、Biodentine+纳米混合复合树脂、MTA BIOREP、MTA BIOREP+纳米混合复合树脂进行修复。然后，用AH Plus和牙胶尖充填根管。将牙根嵌入丙烯酸树脂块中并进行抗折强度测试。Biodentine组的FR最高，而Equia组最低（p<0.05）。在复合树脂组、Biodentine+复合树脂组、MTA BIOREP+复合树脂组和MTA BIOREP组之间未观察到显著差异（p>0.05）。Biodentine可能是修复ECR洞形的首选材料。在MTA BIOREP和Biodentine上添加复合树脂层并不能提高这些材料的FR。
