Susceptibility to localized corrosion of stainless steel and NiTi endodontic instruments in irrigating solutions

Darabara, M; Bourithis, L; Zinelis, S; Papadimitriou, GD

dc.contributor.author	Darabara, M	en
dc.contributor.author	Bourithis, L	en
dc.contributor.author	Zinelis, S	en
dc.contributor.author	Papadimitriou, GD	en
dc.date.accessioned	2014-03-01T01:21:35Z
dc.date.available	2014-03-01T01:21:35Z
dc.date.issued	2004	en
dc.identifier.issn	0143-2885	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16262
dc.subject	Corrosion	en
dc.subject	NiTi files	en
dc.subject	Stainless steel files	en
dc.subject.classification	Dentistry, Oral Surgery & Medicine	en
dc.subject.other	alloy	en
dc.subject.other	chlorine	en
dc.subject.other	edetic acid	en
dc.subject.other	nickel	en
dc.subject.other	oxygen	en
dc.subject.other	platinum	en
dc.subject.other	silver chloride	en
dc.subject.other	sodium	en
dc.subject.other	stainless steel	en
dc.subject.other	titanium	en
dc.subject.other	analytic method	en
dc.subject.other	article	en
dc.subject.other	calculation	en
dc.subject.other	corrosion	en
dc.subject.other	electrode	en
dc.subject.other	endodontics	en
dc.subject.other	human	en
dc.subject.other	hysteresis	en
dc.subject.other	polarization	en
dc.subject.other	statistical significance	en
dc.subject.other	temperature	en
dc.subject.other	Analysis of Variance	en
dc.subject.other	Corrosion	en
dc.subject.other	Dental Alloys	en
dc.subject.other	Dental Instruments	en
dc.subject.other	Edetic Acid	en
dc.subject.other	Electrochemistry	en
dc.subject.other	Materials Testing	en
dc.subject.other	Nickel	en
dc.subject.other	Root Canal Irrigants	en
dc.subject.other	Root Canal Preparation	en
dc.subject.other	Sodium Hypochlorite	en
dc.subject.other	Stainless Steel	en
dc.subject.other	Statistics, Nonparametric	en
dc.subject.other	Titanium	en
dc.title	Susceptibility to localized corrosion of stainless steel and NiTi endodontic instruments in irrigating solutions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1365-2591.2004.00866.x	en
heal.identifier.secondary	http://dx.doi.org/10.1111/j.1365-2591.2004.00866.x	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	Aim To evaluate the pitting and crevice corrosion characteristics of stainless steel (SS) and NiTi endodontic files in R-EDTA and NaOCl irrigating solutions. Methodology The corrosion behaviour of two H-files produced from different SS alloys (Mani, AISI 303 SS, Dentsply Maillefer, AISI 304 SS) and one file produced from NiTi alloy (Maillefer) was determined in R-EDTA and NaOCl irrigating solutions by the cyclic potentiodynamic polarization method. The cutting flutes of 12 files of each material were embedded in an epoxy resin, polished, exposed to the irrigating solutions and used as an electrode. An Ag/AgCl electrode was used as a reference, a platinum plate was used as a counter electrode and polarization curves were obtained for all files in R-EDTA and NaOCl irrigating solutions in 37 degreesC with a potential scan rate of 5 mV min(-1). Corrosion potential (E-corr), Corrosion current density (I-corr) and Pitting potential (E-pit) were calculated from each curve. The results were statistically analysed with two-way ANOVA and Student-Newman-Keuls (SNK) multiple comparison test with materials and irrigating solutions serving as discriminating variables (a = 0.05). Results Cyclic polarization curves presented negative hysteresis implying that pitting or crevice corrosion are not likely to occur for all the materials examined in both irrigating solutions. In NaOCl all materials showed significantly higher E-corr (P = 0.011) as well as lower I-corr compared with R-EDTA reagent. Moreover, all materials demonstrated equal E-pit in NaOCl, which was to be found significantly lower (P = 0.009) than the value of E-pit in R-EDTA. Conclusions None of the tested materials is susceptible to pitting or crevice corrosion in R-EDTA and NaOCl solutions and from this standpoint are appropriate for the production of endodontic files.	en
heal.publisher	BLACKWELL PUBLISHING LTD	en
heal.journalName	International Endodontic Journal	en
dc.identifier.doi	10.1111/j.1365-2591.2004.00866.x	en
dc.identifier.isi	ISI:000224004800008	en
dc.identifier.volume	37	en
dc.identifier.issue	10	en
dc.identifier.spage	705	en
dc.identifier.epage	710	en