Open AccessThe Effect of Some Fluids on Surface Oxidation and Amount of Released Iron of Stainless Steel Endodontic Files
Author(s) -
Saghiri Mohammad Ali,
GarcíaGodoy Franklin,
Lotfi Mehrdad,
Mehrvazfar Peyman,
Aminsobhani Mohsen,
Rezaie Samad,
Asgar Kamal
Publication year - 2012
Publication title -
scanning
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 47
eISSN - 1932-8745
pISSN - 0161-0457
DOI - 10.1002/sca.21016
Subject(s) - sodium hypochlorite , root canal , atomic absorption spectroscopy , corrosion , materials science , scanning electron microscope , absorption rate , metallurgy , nuclear chemistry , dentistry , chemistry , composite material , chromatography , medicine , physics , organic chemistry , quantum mechanics
Summary Endodontic files come in contact with blood, infected pulp tissue, and irrigating solutions during root canal therapy. Some instruments such as stereomicroscopy and scanning electron microscopy are used to observe corrosion of endodontic files which are complicated and dependent on preparation methods. Having knowledge of the corrosion and ion release of endodontic files can help in drawing firm deductions as to which files would perform better in the clinical scenario. Therefore, we have used energy dispersive X ‐ray analysis and an atomic absorption spectrophotometer to track oxygen on the surface and iron in the exposed media to observe the oxidative rate of the media. In this study, corrosion by blood was higher than other biological fluids, but less than with sodium hypochlorite ( N a OC l). Observations of energy dispersive X ‐ray analysis and atomic absorption spectrophotometer results demonstrated that after exposure the amount of oxygen on the surface and surrounding areas increased. Therefore, the files should be rinsed as soon as possible during and after use to hinder the oxidation rate, but blood may produce a different behavior and it might be considered as a decreased risk of broken stainless steel files remaining in the root canal after treatment. SCANNING 34: 309‐315, 2012. © 2012 Wiley Periodicals, Inc.