这项研究调查了植酸(IP6)对化学,结构,镍钛(NiTi)文件的力学特性。根据浸泡方案将测试文件平均分为几组:次氯酸钠(NaOCl),乙二胺四乙酸(EDTA),IP6,EDTA,然后是NaOCl,和IP6,然后是NaOCl。然后比较这些组的Ni,Ti,和铬(Cr)离子从文件中释放。使用场发射扫描电子显微镜(Fe-SEM)和能量色散X射线光谱(EDX)分析了微观结构变化和表面粗糙度。采用耐循环疲劳试验进行力学表征。在SEM下扫描断裂段。使用单因素方差分析进行统计分析,Tukey测试,Kruskal-Wallis测试和Mann-WhitneyU测试。结果表明,NaOCl引起Cr的显著释放,其次是IP6和EDTA(P<0.05)。当文件预先浸入EDTA时,NaOCl倾向于诱导较少的Ti和Cr释放。EDX评估表明,主要的表面元素是Ni,Ti,碳,和氧气。EDTA基团含碳量最高,而对照组显示最低。表面粗糙度评估显示,尽管某些组浸泡后略有增加,但组间没有显着差异。在NaOCl基团中观察到黑色区域,其指示腐蚀。然而,循环疲劳试验显示两组间无显著差异.
This study investigated phytic acid (IP6) effect on chemical, structural, and mechanical characteristics of nickel-titanium (NiTi) files. The tested files were equally divided into groups according to the immersion protocol: sodium hypochlorite (NaOCl), ethylenediaminetetraacetic acid (EDTA), IP6, EDTA followed by NaOCl, and IP6 followed by NaOCl. These groups were then compared in terms of Ni, Ti, and chromium (Cr) ions release from the files. Microstructural changes using field emission scanning electron microscope (Fe-SEM) and energy dispersive X-ray spectroscopy (EDX) and surface roughness were analyzed. The mechanical characterization was conducted using cyclic fatigue resistance test. Fractured segments were scanned under SEM. Statistical analysis was performed using one-way ANOVA, Tukey test, Kruskal-Wallis test and Mann-Whitney U test. Results showed that NaOCl caused significant release of Cr, followed by IP6 and EDTA (P < 0.05). When files were pre-immersed in EDTA, NaOCl tended to induce less release of Ti and Cr. EDX evaluation revealed that the main surface elements were Ni, Ti, carbon, and oxygen. EDTA group contained the highest amount of carbon, while the control group showed the lowest. Surface roughness evaluation revealed no significant differences between groups despite the minor increases after immersion in certain groups. Black areas were observed in the NaOCl group which indicated corrosion. However, the cyclic fatigue test showed no significant differences between the groups.