Structural effects of sodium hypochlorite solution on RaCe rotary nickel-titanium instruments: an atomic force microscopy study

被引：29
|
作者：
Topuz, Ozgur [1 ]
Aydin, Cumhur [2 ]
Uzun, Ozgur [1 ]
Inan, Ugur [3 ]
Alacam, Tayfun [1 ]
Tunca, Yasar M. [2 ]
机构：
[1] Gazi Univ, Dept Operat Dent & Endodont, Fac Dent, Ankara, Turkey
[2] Gulhane Mil Med Acad, Dept Endodont & Cconservat Treatment, Ctr Dent Sci, Ankara, Turkey
[3] Ondokuz Mayis Univ, Dept Endodont & Restorat Dent, Fac Dent, Samsun, Turkey
来源：
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY | 2008年 / 105卷 / 05期
关键词：
D O I：
10.1016/j.tripleo.2007.11.006
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
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.
引用
收藏
页码：661 / 665
页数：5
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