TY - Jour A2 - Zinelis，Spiros Au - Abuhulabah，Hind F. Au - Abumostafa，Ammar Py - 2020 DA - 2020/09/19 Ti - 耐镍钛文件的循环疲劳，浸入体温Sp在次氯酸钠钠钠 -8830163 vl - 2020 ab - 背景/目的。为了评估两种镍 - 钛（NITI）文件，一种曲线（OC）和预氯酸盐（PTG）在体温下浸入2.5％次氯酸钠（NaOCl）溶液后的循环疲劳（CF）的抵抗力。 材料和方法。每个品牌的四十五个文件被随机分配给三组（ N. = 15) and subjected to the following: no immersion (control), 1-minute immersion, and 5-minute immersion in 2.5% NaOCl at 37°C. CF for all the files was tested within a well-lubricated stainless-steel artificial canal in a water bath at 37°C simulating body temperature. The procedure was video recorded, and the number of cycles to fracture (NCF) was calculated by multiplying the time taken to fracture, with the number of rotations per second. The data were analyzed for normality, and thereafter, one-way ANOVA with multiple Bonferroni was used as the post hoc test. 结果。对OC文件的抵抗力显着高于所有组中的PTG文件。在浸入NaoCl的组中，OC文件在CF电阻下显示出显着下降;PTG文件也显示出一滴但没有显着。与对照组相比，两种文件在浸入NaoCl浸泡5分钟后，对CF的抗性显着下降。 结论。与所有组中的PTG相比，OC文件对CF具有更大的抵抗力。浸入2.5％NaoCl 5分钟，为所有文件显着降低了CF的抵抗力。SN - 1687-8728 UR - HTTPS://Doi.org/10.1155/2020/8830163 Do - 10.1155 / 2020/8830163 JF - 国际牙科PB - Hindawi KW - ER -