Kosti Eleni, Al Jabbari Youssef S, Sufyan Aref, Zinelis Spiros
Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Greece.
Dental Biomaterials Research and Development Chair, King Saud University, Riyadh, Saudi Arabia.
Saudi Dent J. 2024 Aug;36(8):1086-1092. doi: 10.1016/j.sdentj.2024.06.011. Epub 2024 Jun 4.
The aim of this study was to compare the efficacies levels of four cleaning solutions for removing debris from rotary Nickel-Titanium (Ni-Ti) endodontic instruments.
Twelve instruments that fractured during ex vivo instrumentation were used. Fractured surfaces were investigated by SEM before and after 3, 6 and 9 min of ultrasonic cleaning in 17 % EDTA.3NaOH (Group A), 2.5 % NaOCl (Group B), Dentasept 3H Rapide (Group C) and ZymeX™ (Group D) solutions. EDS analyses of selected files from all four groups of untreated and ultrasonically cleaned samples were performed to assess the elemental composition of the alloy surfaces.
SEM analysis revealed that after 9 min of ultrasonic agitation, all four investigated solutions had cleaned fractured surfaces. However, some low-atomic-number regions exhibited random distributions on the fractured surfaces. EDS analyses indicated that only C was retained on surface after 9 min of ultrasonic cleaning. This finding was common in all tested groups.
All four investigated solutions substantially removed debris from the surfaces of the Ni-Ti files and were considered appropriate for clinical practice.
本研究旨在比较四种清洁溶液去除旋转镍钛根管器械上碎屑的效果水平。
使用12根在体外器械操作过程中折断的器械。在17%乙二胺四乙酸三钠（A组）、2.5%次氯酸钠（B组）、Dentasept 3H Rapide（C组）和ZymeX™（D组）溶液中进行3、6和9分钟超声清洗前后，通过扫描电子显微镜（SEM）对折断表面进行研究。对所有四组未处理和超声清洗后的样本中选定的锉进行能谱分析（EDS），以评估合金表面的元素组成。
SEM分析显示，超声搅拌9分钟后，所有四种研究溶液均清洁了折断表面。然而，一些低原子序数区域在折断表面呈现随机分布。EDS分析表明，超声清洗9分钟后，表面仅保留了碳。这一发现在所有测试组中都很常见。
所有四种研究溶液均能有效去除镍钛锉表面的碎屑，被认为适用于临床实践。
