不同镍钛根管旋转器械表面粗糙度受根管冲洗液的影响。
Impact of endodontic irrigants on surface roughness of various nickel-titanium rotary endodontic instruments.
机构信息
Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre (NRC), Giza, Dokki, 12622, Egypt.
出版信息
BMC Oral Health. 2023 Jul 24;23(1):517. doi: 10.1186/s12903-023-03227-0.
BACKGROUND
The aim of the current study is to assess the surface roughness of several recent nickel-titanium (Ni-Ti) rotary endodontic instruments, namely: Protaper next (PTN); Hyflex CM (CM); Hyflex EDM (EDM); WaveOne gold (WOG); and trunatomy (TN), before and after application of 5.25% sodium hypochlorite (NaOCl) irrigant solution.
METHODS
In this in vitro study, five recently introduced rotary endodontic instruments of different metallurgical properties and designs were subjected to Atomic Force Microscopy (AFM) analysis, and then each file was rotated in 5.25% NaOCl for 15 min., with speed and torque according to manufacturer's instructions. The instruments were then subjected to AFM analysis again. The surface roughness average (Sa) parameter was calculated. Data were analyzed by Paired T test, One-way ANOVA and Tukey tests.
RESULTS
There was a statistically significant decrease in the surface roughness of all rotary endodontic instruments after immersion in irrigants (P ≤ 0.05).
CONCLUSION
The new TN and PTN instruments showed the least surface roughness. All tested Ni-Ti rotary endodontic instruments after irrigants exposure showed a varying increase in surface roughness.
背景
本研究旨在评估几种新型镍钛（Ni-Ti）旋转根管器械的表面粗糙度，分别为：Protaper Next（PTN）、Hyflex CM（CM）、Hyflex EDM（EDM）、WaveOne Gold（WOG）和 trunatomy（TN），在使用 5.25%次氯酸钠（NaOCl）冲洗液前后进行检测。
方法
在这项体外研究中，对五种不同冶金性能和设计的新型旋转根管器械进行原子力显微镜（AFM）分析，然后根据制造商的说明，将每个器械在 5.25% NaOCl 中旋转 15 分钟。再次对器械进行 AFM 分析。计算表面粗糙度平均值（Sa）参数。采用配对 t 检验、单因素方差分析和 Tukey 检验对数据进行分析。
结果
所有旋转根管器械在浸泡于冲洗液后表面粗糙度均有统计学显著降低（P≤0.05）。
结论
新型 TN 和 PTN 器械显示出最小的表面粗糙度。所有经冲洗液处理后的测试 Ni-Ti 旋转根管器械的表面粗糙度均有不同程度的增加。
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