Varanasi Pavan, Kalaivani Muralidasan, Balachandran Janani, J Pooraninagalakshmi, Suresh Mitthra, Manoharan Indumathi
Conservative Dentistry and Endodontics, Sri Kamakshi Sai Dental Hospital, Tirupati, IND.
Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research, Chennai, IND.
Cureus. 2024 Dec 26;16(12):e76443. doi: 10.7759/cureus.76443. eCollection 2024 Dec.
Aim To compare the quality of obturation using WVC (warm vertical compaction), CLC (cold lateral compaction), injectable (iFill), and Thermafil (GuttaCore) techniques, along with hydraulic condensation of bioceramic (BC) sealer, and evaluating the percentage of gutta-percha (GP), sealer, and voids in simulated internal resorptive lesions, using an advanced stereomicroscope with ImageJ software (National Institutes of Health, Bethesda, MD, USA). Methods and material In this study, 40 freshly extracted maxillary incisors were collected, and endodontic instrumentation was done to working length using hand K-files. Simulated internal resorption cavities were created in the middle-apical third of the roots after horizontal sectioning and were re-cemented. The root canals were obturated using four techniques: WVC, CLC, iFill, and Thermafil, along with BC sealer. After one week, the samples were resectioned, the surfaces were photographed, and the percentage of GP, sealer, and voids in resorptive cavities was calculated using an advanced stereomicroscope and ImageJ software, respectively. The data were statistically analyzed using one-way analysis of variance (ANOVA) and post-hoc Tukey tests. Results The iFill approach had the highest total filled area in the simulated resorptive region (96%), followed by WVC (92%), CLC (91%), and GuttaCore (77%). CLC had a notably high percentage of sealers (46%), compared to WVC (40%) and Thermacore (41%). With 23% of voids, the GuttaCore technique was considered the least successful. Conclusions Warm GP condensation techniques, combined with hydraulic sealer in filling artificial resorption cavities, outperformed the other obturation procedures.
目的 比较使用热垂直加压法（WVC）、冷侧向加压法（CLC）、注射法（iFill）和热塑牙胶尖法（Thermafil，GuttaCore）进行根管充填的质量，以及生物陶瓷（BC）封闭剂的液压加压法，并使用配备ImageJ软件的高级体视显微镜（美国国立卫生研究院，马里兰州贝塞斯达）评估模拟内吸收性病变中牙胶（GP）、封闭剂和空隙的百分比。方法和材料 在本研究中，收集了40颗新鲜拔除的上颌切牙，使用手动K锉将根管预备至工作长度。在水平剖切后，于牙根的中根尖三分之一处创建模拟内吸收腔，并重新粘结。使用四种技术（WVC、CLC、iFill和Thermafil）以及BC封闭剂对根管进行充填。一周后，对样本进行再次剖切，拍摄表面照片，并分别使用高级体视显微镜和ImageJ软件计算吸收腔内GP、封闭剂和空隙的百分比。使用单因素方差分析（ANOVA）和事后Tukey检验对数据进行统计学分析。结果 iFill方法在模拟吸收区域的总充填面积最高（96%），其次是WVC（92%）、CLC（91%）和GuttaCore（77%）。与WVC（40%）和Thermacore（41%）相比，CLC的封闭剂百分比显著较高（46%）。GuttaCore技术的空隙率为23%，被认为是最不成功的。结论 在填充人工吸收腔时，热GP加压技术与液压封闭剂相结合的方法优于其他充填程序。
