动态浸泡在次氯酸钠和乙二胺四乙酸溶液中对 WaveOne 和 WaveOne Gold 往复镍钛锉循环疲劳强度的影响。
Effect of Dynamic Immersion in Sodium Hypochlorite and EDTA Solutions on Cyclic Fatigue Resistance of WaveOne and WaveOne Gold Reciprocating Nickel-titanium Files.
机构信息
Private Practice, Dental Clinic, Çanakkale, Turkey.
Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
出版信息
J Endod. 2018 May;44(5):834-837. doi: 10.1016/j.joen.2017.11.014. Epub 2018 Jan 12.
INTRODUCTION
The purpose of this study was to evaluate the effect of sodium hypochlorite (NaOCl) and EDTA solutions on the cyclic fatigue resistance of WaveOne (WO) and WaveOne Gold (WOG) nickel-titanium reciprocating files.
METHODS
A hundred WO (25/.08), and 100 WOG (25/.07) were randomly divided into 5 groups: group 1, no immersion; group 2, immersion in 5.25% NaOCl at 37°C ± 1°C for 5 minutes; group 3, immersion in 5.25% NaOCl at 37°C ± 1°C for 10 minutes; group 4, immersion in 17% EDTA at 37°C ± 1°C for 5 minutes; and group 5, immersion in 17 % EDTA at 37°C ± 1°C for 10 minutes. Then, the instruments were reciprocated in an artificial canal until fracture occurred, and the time to fracture was recorded. The data were statistically analyzed using 1-way analysis of variance and the Student t test via SPSS 21.0 software (IBM Corp, Armonk, NY) with the significance level set at P < .05.
RESULTS
The cyclic fatigue resistance of the WOG was statistically higher than the WO in all the conditions tested (P < .05). There was no statistically significant difference among the different conditions tested in terms of cyclic fatigue resistance for both WO and WOG files (P > .05). Among the groups, there was no significant difference in the fracture lengths (P > .05).
CONCLUSIONS
Within the limitations of the present study, it was determined that NaOCl and EDTA solutions did not have any effect on the cyclic fatigue resistance of WO and WOG files.
简介
本研究旨在评估次氯酸钠（NaOCl）和乙二胺四乙酸（EDTA）溶液对 WaveOne（WO）和 WaveOne Gold（WOG）镍钛往复锉的循环疲劳阻力的影响。
方法
将 100 根 WO（25/.08）和 100 根 WOG（25/.07）随机分为 5 组：第 1 组，不浸泡；第 2 组，在 37°C±1°C 的 5.25% NaOCl 中浸泡 5 分钟；第 3 组，在 37°C±1°C 的 5.25% NaOCl 中浸泡 10 分钟；第 4 组，在 37°C±1°C 的 17% EDTA 中浸泡 5 分钟；第 5 组，在 37°C±1°C 的 17% EDTA 中浸泡 10 分钟。然后，在人工根管中往复锉动直至发生断裂，并记录断裂时间。使用 SPSS 21.0 软件（IBM Corp，Armonk，NY）进行单因素方差分析和学生 t 检验对数据进行统计学分析，显著性水平设为 P<.05。
结果
在所有测试条件下，WOG 的循环疲劳阻力均明显高于 WO（P<.05）。在 WO 和 WOG 文件的循环疲劳阻力方面，不同测试条件之间没有统计学上的显著差异（P>.05）。在各组之间，断裂长度没有显著差异（P>.05）。
结论
在本研究的限制范围内，确定次氯酸钠和乙二胺四乙酸溶液对 WO 和 WOG 文件的循环疲劳阻力没有任何影响。
Zotero 插件