Manoharan Muthusamy, Kowsalya Senthilnathan, Mathian Veerabadhran Mahesh, Gawthaman Murugesan, Vinodh Selvaraj, Kamatchi Mohanraj
Department of Pedodontics and Preventive Dentistry, Vivekanandha Dental College for Women, Namakkal, Tamil Nadu, India.
Int J Clin Pediatr Dent. 2024 Nov;17(11):1224-1228. doi: 10.5005/jp-journals-10005-2989. Epub 2024 Dec 19.
Failure of the endodontic treatment might be due to various reasons like zipping, apical blockade, ledging, debris extrusion, etc. Apical debris extrusion in primary teeth is of major concern as it does not have a proper well-developed apex, that is, mature apex. This study aims to compare and evaluate the apical debris extrusion in primary molars using three different pediatric rotary file system.
Thirty freshly extracted teeth primary molars were divided into three experimental groups according to the used file systems as group I-NT Pedo Gold, group II-Pedo Flex, and group III-Kedo-S. Debris extruded during canal shaping were collected in preweighed vials. Each canal was irrigated with 6 mL of saline and 2 mL of sodium hypochlorite. The amount of debris extruded from each tooth was calculated by subtracting the preinstrumentation from the postinstrumentation measurement. Data were analyzed using analysis of variance (ANOVA) and Tukey tests with = 0.05.
Kedo-S showed statistically significant lesser apical debris extrusion than Pedo Flex and NT Pedo Gold (-value < 0.001) while comparing Pedo Flex and NT Pedo Gold insignificant difference.
All three pediatric rotary file systems extruded debris apically; while Kedo-S can be safely used as a rotary file in pediatric dentistry with minimal apical debris extrusion.
An ideal rotary instrument should not extrude debris apically, the lesser the extrusion greater the endodontic treatment success. Kedo-S can be securely used as a rotary file with less apical debris extrusion than the other two rotary systems.
Manoharan M, Kowsalya S, Mathian VM, Comparative Evaluation of Apical Debris Extrusion in Primary Molars Using Three Different Pediatric Rotary Systems: An Study. Int J Clin Pediatr Dent 2024;17(11):1224-1228.
根管治疗失败可能由多种原因引起，如根管拉链、根尖阻塞、台阶形成、碎屑挤出等。乳牙的根尖碎屑挤出是一个主要问题，因为乳牙没有发育完善的根尖，即成熟根尖。本研究旨在比较和评估使用三种不同儿童旋转锉系统时乳牙磨牙的根尖碎屑挤出情况。
30颗新鲜拔除的乳牙磨牙根据所使用的锉系统分为三个实验组，即I组-NT Pedo Gold、II组-Pedo Flex和III组-Kedo-S。根管预备过程中挤出的碎屑收集在预先称重的小瓶中。每个根管先用6 mL生理盐水冲洗，再用2 mL次氯酸钠冲洗。每颗牙齿挤出的碎屑量通过将预备后测量值减去预备前测量值来计算。数据采用方差分析（ANOVA）和Tukey检验进行分析，α = 0.05。
与Pedo Flex和NT Pedo Gold相比，Kedo-S的根尖碎屑挤出在统计学上显著更少（P值<0.001），而Pedo Flex和NT Pedo Gold之间无显著差异。
所有三种儿童旋转锉系统都会向根尖挤出碎屑；而Kedo-S作为儿童牙科的旋转锉使用时，根尖碎屑挤出最少，可以安全使用。
理想的旋转器械不应向根尖挤出碎屑，挤出量越少，根管治疗成功的可能性越大。Kedo-S作为旋转锉使用时，根尖碎屑挤出比其他两种旋转系统少，可以安全使用。
Manoharan M, Kowsalya S, Mathian VM, 比较评估三种不同儿童旋转系统在乳牙磨牙中的根尖碎屑挤出情况：一项研究。《国际临床儿科牙科学杂志》2024；17(11):1224 - 1228。
