Reciproc 蓝和 Reciproc 锉在 S 形根管中的抗疲劳性能
Cyclic Fatigue Resistance of Reciproc Blue and Reciproc Files in an S-shaped Canal.
机构信息
Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
Department of Pedodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
出版信息
J Endod. 2017 Oct;43(10):1679-1682. doi: 10.1016/j.joen.2017.04.009. Epub 2017 Jul 18.
INTRODUCTION
This study evaluated the cyclic fatigue resistance (CFR) of Reciproc (R25 and R40; VDW, Munich, Germany) and Reciproc Blue (R25 and R40, VDW) instruments used in an artificial S-shaped canal.
METHODS
A total of 80 files were tested in an S-shaped canal (n = 20 for each file, Reciproc R25 and R40 and Reciproc Blue R25 and R40). This study compared Reciproc R25 with Reciproc Blue R25 files and Reciproc R40 with Reciproc Blue R40 files. All files were rotated in an S-shaped artificial canal until fracture. CFR was determined by recording the time to fracture in the artificial canal. The length of each fractured fragment was measured in millimeters. An independent sample t test was used to analyze the data.
RESULTS
Between the R25 files, Reciproc Blue instruments showed significantly greater CFR than the Reciproc files in the apical and coronal curves (P < .05). Between the R40 files, Reciproc Blue instruments exhibited greater CFR in the apical and coronal curves (P < .05). There was no difference in the fractured fragment lengths of the Reciproc Blue files compared with the Reciproc files (P > .05).
CONCLUSIONS
The Reciproc Blue R25 and R40 files showed greater CFR than the Reciproc R25 and R40 files in an S-shaped canal.
简介
本研究评估了 Reciproc（R25 和 R40；VDW，慕尼黑，德国）和 Reciproc Blue（R25 和 R40，VDW）在模拟 S 形根管中使用的循环疲劳阻力（CFR）。
方法
总共 80 个锉在 S 形根管中进行了测试（每个锉 20 个，Reciproc R25 和 R40 以及 Reciproc Blue R25 和 R40）。本研究比较了 Reciproc R25 与 Reciproc Blue R25 锉以及 Reciproc R40 与 Reciproc Blue R40 锉。所有锉均在模拟 S 形根管中旋转直至折断。通过记录在人工根管中折断的时间来确定 CFR。以毫米为单位测量每个折断片段的长度。采用独立样本 t 检验分析数据。
结果
在 R25 锉中，Reciproc Blue 器械在根尖和冠部曲线的 CFR 明显大于 Reciproc 锉（P <.05）。在 R40 锉中，Reciproc Blue 器械在根尖和冠部曲线的 CFR 更大（P <.05）。Reciproc Blue 锉的折断片段长度与 Reciproc 锉无差异（P >.05）。
结论
在 S 形根管中，Reciproc Blue R25 和 R40 锉的 CFR 明显大于 Reciproc R25 和 R40 锉。
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