Pawar Bhaggyashri A, Pawar Ajinkya M, Bhardwaj Anuj, Wahjuningrum Dian Agustin, Rahardjo Amelia Kristanti, Luke Alexander Maniangat, Metzger Zvi, Kfir Anda
Department of Oral Health and Advanced Dentistry, Sir H N Reliance Foundation Hospital and Research Center, Mumbai 400004, Maharashtra, India.
Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai 400034, Maharashtra, India.
Biology (Basel). 2021 Jan 10;10(1):42. doi: 10.3390/biology10010042.
This clinical trial focused on collating the instrumentation time and quality of root canal obturation in primary molars treated with three instrumentation techniques: adaptive, rotary, and manual. A triple-armed, randomized controlled clinical trial was performed on 75 primary molars requiring pulpectomy treatment, divided into three groups ( = 25 per group). The teeth in Group 1 were instrumented with an adaptive technique (XP-endo Shaper, FKG Dentaire, La Chaux-de-Fonds, Switzerland), Group 2 with pediatric rotary files (Kedo-S; D1 and E1), and Group 3 with a manual technique (hand K-files). The apical size of the final instrumentation was maintained at #30 for all groups. Instrumentation time and the grade of the root canal obturation were evaluated. Instrumentation duration was recorded, employing a digital stopwatch from the insertion of the first file until the completion of final irrigation. Obturation quality was assessed using radiographs. The criteria taken as a reference for obturation were: optimal (1 mm short of the apex), underfilled (2 mm short of the apex), or overfilled (beyond the apex). The use of an adaptive technique was associated with the lowest instrumentation time ( < 0.0001) when used for instrumenting primary molars and with the highest root canal filling quality of the three groups. The application of the new concept of adaptive instrumentation for pulpectomy of primary molars was a favorable technique, considering the significant reduction in instrumentation time and better obturation.
本临床试验着重整理了采用三种根管预备技术（自适应技术、旋转技术和手动技术）治疗乳磨牙时的预备时间和根管充填质量。对75颗需要进行牙髓摘除术治疗的乳磨牙进行了一项三臂随机对照临床试验，分为三组（每组 = 25颗）。第1组牙齿采用自适应技术（XP-endo Shaper，FKG Dentaire，瑞士拉绍德封）进行预备，第2组采用儿童旋转锉（Kedo-S；D1和E1），第3组采用手动技术（手动K锉）。所有组最终预备的根尖尺寸均保持在#30。评估了预备时间和根管充填等级。记录预备持续时间，从第一根锉插入到最终冲洗完成使用数字秒表计时。使用X线片评估充填质量。作为充填参考的标准为：最佳（距根尖1 mm短）、欠填（距根尖2 mm短）或超填（超出根尖）。在用于乳磨牙预备时，自适应技术的预备时间最短（< 0.0001），且在三组中根管充填质量最高。考虑到预备时间显著缩短且充填效果更好，将自适应预备的新概念应用于乳磨牙牙髓摘除术是一种有利的技术。
