次氯酸钠溶液对RaCe旋转镍钛器械的结构影响：一项原子力显微镜研究。
Structural effects of sodium hypochlorite solution on RaCe rotary nickel-titanium instruments: an atomic force microscopy study.
作者信息
Topuz Ozgur, Aydin Cumhur, Uzun Ozgur, Inan Ugur, Alacam Tayfun, Tunca Yasar M
机构信息
Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 May;105(5):661-5. doi: 10.1016/j.tripleo.2007.11.006. Epub 2008 Mar 10.
OBJECTIVE
The aim of this study was to investigate the effect of sodium hypochlorite immersion on the surface characteristics of RaCe rotary nickel-titanium instruments using atomic force microscopy (AFM).
STUDY DESIGN
Four new RaCe instruments were used in this study (two 30.06 and two 30.02). One 30.06 and one 30.02 instrument were immersed in sodium hypochlorite solution for 5 min. Surface topography of the instruments was evaluated using the AFM. The instruments were analyzed on 11 points along a 3-mm section. Root mean square (RMS) values were used to compare the topographic deviations. The data were analyzed using Student t test.
RESULTS
Mean RMS values for NaOCl measurements were higher than the measurements on new files, and the difference was statistically significant (P < .01).
CONCLUSION
The AFM results show that NaOCl causes deterioration on the surface of RaCe instruments and should be used with care during clinical use because of the risk of unexpected failure.
目的
本研究旨在使用原子力显微镜（AFM）研究次氯酸钠浸泡对RaCe旋转镍钛器械表面特性的影响。
研究设计
本研究使用了四支新的RaCe器械（两支30.06和两支30.02）。将一支30.06和一支30.02器械浸泡在次氯酸钠溶液中5分钟。使用AFM评估器械的表面形貌。沿着3毫米的截面在11个点上对器械进行分析。使用均方根（RMS）值比较形貌偏差。数据采用学生t检验进行分析。
结果
次氯酸钠测量的平均RMS值高于新器械的测量值，差异具有统计学意义（P <.01）。
结论
AFM结果表明，次氯酸钠会导致RaCe器械表面劣化，临床使用时应谨慎使用，因为存在意外失效的风险。
Zotero 插件