Coelho Letycia Accioly Simões, Van Dessel Jeroen, Gonçalez Piai Gabriela, Kato Augusto Shoji, Alcalde Murilo Priori, Duarte Marco Antonio Hungaro, Vivan Rodrigo Ricci
Department of Dentistry, Endodontics, and Dental Materials, University of São Paulo, Bauru School of Dentistry, Bauru, Brazil.
Department of Biomedical Sciences, OMFS-IMPATH Research Group, KU Leuven, Leuven, Belgium; Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.
Eur Endod J. 2025 Mar;10(2):151-158. doi: 10.14744/eej.2024.10932.
Biomechanical root canal preparation involves both mechanical instrumentation and endodontic irrigation, aiming to reduce bacterial levels to promote periradicular healing. However, complete removal of biofilm and debris, especially in complex canal morphologies, remains difficult. This study aimed to evaluate, through microcomputed tomography (micro-CT), the use of the XP-Endo Finisher and Tornado Disinfection Kit (TDK) systems during the final agitation of the irrigating solution for the final debridement of oval-shaped canals of lower incisors.
Thirty-nine extracted human mandibular incisors were instrumented up to size #25/.05 and divided into three groups (n=13) based on the final irrigation system: Conventional irrigation with syringe and needle (CI), XP-Endo Finisher (XPF), and TDK. 40 mL of 2.5% NaOCl was used for each group. Teeth were scanned ex vivo using a micro-CT before instrumentation, after instrumentation, and after irrigation. Three-dimensional root canal models were evaluated for volume, untouched surfaces, and dentin removal. Data were analyzed using repeated-measures ANOVA, t-test, and Tukey tests (p<0.05).
TDK showed a significant difference in total and cervical third compared to CI and XPF regarding volume and dentin removal analysis (p<0.05), with no significant difference in the apical third compared to XPF (p>0.05). TDK had a lower percentage of untouched volume compared to the other systems in the overall analysis (p<0.05) and at all thirds compared to CI (p<0.05).
Supplementary instruments improve root canal debridement compared to conventional irrigation, particularly in smaller apical diameters and oval-shaped canals of lower incisors. TDK offers enhanced wall contact after root canal preparation and is a viable alternative for complementing debridement. (EEJ-2024-10-158).
生物力学根管预备包括机械预备和根管冲洗，旨在降低细菌水平以促进根尖周愈合。然而，完全清除生物膜和碎屑，尤其是在复杂的根管形态中，仍然很困难。本研究旨在通过微计算机断层扫描（micro-CT）评估在冲洗液最后搅拌阶段使用XP-Endo Finisher和龙卷风消毒套件（TDK）系统对下颌切牙椭圆形根管进行最终清创的效果。
39颗拔除的人下颌切牙预备至#25/.05号，根据最终冲洗系统分为三组（n = 13）：传统注射器和针头冲洗（CI）、XP-Endo Finisher（XPF）和TDK。每组使用40 mL 2.5%的次氯酸钠。在预备前、预备后和冲洗后使用micro-CT对牙齿进行离体扫描。对三维根管模型进行体积、未触及表面和牙本质去除情况评估。使用重复测量方差分析、t检验和Tukey检验分析数据（p < 0.05）。
在体积和牙本质去除分析方面，与CI和XPF相比，TDK在总体和颈段三分之一处显示出显著差异（p < 0.05），与XPF相比，在根尖三分之一处无显著差异（p > 0.05）。在总体分析中，与其他系统相比，TDK未触及体积的百分比更低（p < 0.05），与CI相比，在所有三分之一处均更低（p < 0.05）。
与传统冲洗相比，辅助器械可改善根管清创效果，尤其是在下颌切牙较小的根尖直径和椭圆形根管中。TDK在根管预备后能增强与根管壁的接触，是补充清创的可行替代方法。（EEJ - 2024 - 10 - 158）
