Kumar Shashank, Naik N Sathyajith, Vashisth Pallavi, Sharma Shivangi, Singh Sonal
BDS, MDS, Sr Lecturer, Department of Pedodontics, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India.
BDS, MDS, Principal and Head of Department. Professor Dept of Pedodontics. Institute of Dental Sciences. Bareilly. Uttar Pradesh, India.
J Clin Exp Dent. 2023 May 1;15(5):e396-e402. doi: 10.4317/jced.60347. eCollection 2023 May.
Ultimate goal of BMP is to extirpate the pulp tissue completely, microorganisms, debris & shaping the canal which preserves the original course of the canal to receive an obturating material. Due to various morphological challenges present in deciduous root canal, there is high demand of an improved quality & design of file system with less working length to prevent undesirable complication & reduce treatment time. Aim: To evaluate & inter-compare the dentin thickness and instrumentation time in root dentin of deciduous teeth after BMP in Hand, Rotary & Reciprocation motion with single-file systems.
60 extracted primary single rooted teeth with un-resorbed roots were included in the study. Teeth were divided into three groups consisting of 20 teeth in each group. In Group-1 Root canal preparation was done with pediatric Hand files, In Group-2 with pediatric Single-file system in rotary motion and in Group-3 with pediatric Single-file system in reciprocating motion. Teeth were scanned before & after preparation with CBCT. Segments were analyzed for dentin thickness at 3mm,5mm and 7mm respectively. Instrumentation time was recorded by an assistant.
Mean instrumentation time of Rotary was least as compared to Reciprocation & Hand respectively, instrumentation time taken by hand filing was significantly higher. Reciprocating filing helps in better dentin debridement at apical and the middle third and no difference was found at the coronal third among all three groups.
Reciprocating filing helps in better dentin debridement and rotary instrumentation requires least time for canal preparation. Hand Files, Rotary Files, Reciprocating motion, CBCT.
根管预备的最终目标是完全清除牙髓组织、微生物和碎屑，并对根管进行塑形，使其保持原有根管走向以容纳充填材料。由于乳牙根管存在各种形态学挑战，因此对质量更高、设计更优且工作长度更短的锉系统有很高需求，以防止出现不良并发症并缩短治疗时间。目的：评估并相互比较使用单锉系统以手动、旋转和往复运动方式进行乳牙根管预备后，根管牙本质的厚度及预备时间。
本研究纳入60颗牙根未吸收的单根乳牙。将牙齿分为三组，每组20颗。第一组使用儿童手动锉进行根管预备，第二组使用儿童单锉系统以旋转运动方式进行预备，第三组使用儿童单锉系统以往复运动方式进行预备。在预备前后使用锥形束计算机断层扫描（CBCT）对牙齿进行扫描。分别分析距根尖3mm、5mm和7mm处的牙本质厚度。预备时间由一名助手记录。
与往复运动和手动方式相比，旋转预备的平均时间最短，手动预备所需时间显著更长。往复运动预备有助于在根尖和中三分之一处更好地清除牙本质，在所有三组的冠三分之一处未发现差异。
往复运动预备有助于更好地清除牙本质，旋转预备所需的根管预备时间最短。手动锉、旋转锉、往复运动、CBCT。
