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Article: Electropolishing enhances the resistance of nickel-titanium rotary files to corrosion-fatigue failure in hypochlorite

TitleElectropolishing enhances the resistance of nickel-titanium rotary files to corrosion-fatigue failure in hypochlorite
Authors
Issue Date2010
PublisherElsevier Inc. The Journal's web site is located at http://www.jendodon.com
Citation
Journal Of Endodontics, 2010, v. 36 n. 8, p. 1354-1357 How to Cite?
AbstractIntroduction: The aim of this study was to examine the fatigue behavior, especially at the low-cycle fatigue (LCF) region, of an experimentally electropolished FlexMaster and a commercial electropolished nickel-titanium (NiTi) instrument (RaCe) in a corrosive environment. Methods: A total of 90 NiTi rotary instruments were subjected to rotational bending at various degrees of curvatures while immersed in 1.2% sodium hypochlorite solution until broken. The maximum surface strain amplitude, calculated from the curvature of the instrument and the diameter of the cross section at break, was plotted against the LCF life. The results were compared with data for a non-electropolished commercial product tested by using the same methodology. Results: The fatigue life of both instruments generally declined with increasing surface strain amplitude; there was a significant difference between the 2 instruments. Comparing the surface-treated FlexMaster with its commercially available non-electropolished counterpart, an improved resistance to fatigue breakage as a result of electropolishing was noted (P < .05). Conclusions: The LCF life of a NiTi instrument rotating with a curvature in a corrosive environment is enhanced by electropolishing. The design, both cross-sectional and longitudinal, appears to have an effect on the fatigue behavior of NiTi rotary instruments. © 2010 American Association of Endodontists.
Persistent Identifierhttp://hdl.handle.net/10722/154627
ISSN
2015 Impact Factor: 2.904
2015 SCImago Journal Rankings: 1.681
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPraisarnti, Cen_US
dc.contributor.authorChang, JWWen_US
dc.contributor.authorCheung, GSPen_US
dc.date.accessioned2012-08-08T08:26:34Z-
dc.date.available2012-08-08T08:26:34Z-
dc.date.issued2010en_US
dc.identifier.citationJournal Of Endodontics, 2010, v. 36 n. 8, p. 1354-1357en_US
dc.identifier.issn0099-2399en_US
dc.identifier.urihttp://hdl.handle.net/10722/154627-
dc.description.abstractIntroduction: The aim of this study was to examine the fatigue behavior, especially at the low-cycle fatigue (LCF) region, of an experimentally electropolished FlexMaster and a commercial electropolished nickel-titanium (NiTi) instrument (RaCe) in a corrosive environment. Methods: A total of 90 NiTi rotary instruments were subjected to rotational bending at various degrees of curvatures while immersed in 1.2% sodium hypochlorite solution until broken. The maximum surface strain amplitude, calculated from the curvature of the instrument and the diameter of the cross section at break, was plotted against the LCF life. The results were compared with data for a non-electropolished commercial product tested by using the same methodology. Results: The fatigue life of both instruments generally declined with increasing surface strain amplitude; there was a significant difference between the 2 instruments. Comparing the surface-treated FlexMaster with its commercially available non-electropolished counterpart, an improved resistance to fatigue breakage as a result of electropolishing was noted (P < .05). Conclusions: The LCF life of a NiTi instrument rotating with a curvature in a corrosive environment is enhanced by electropolishing. The design, both cross-sectional and longitudinal, appears to have an effect on the fatigue behavior of NiTi rotary instruments. © 2010 American Association of Endodontists.en_US
dc.languageengen_US
dc.publisherElsevier Inc. The Journal's web site is located at http://www.jendodon.comen_US
dc.relation.ispartofJournal of Endodonticsen_US
dc.subject.meshCorrosionen_US
dc.subject.meshDental Alloys - Chemistryen_US
dc.subject.meshDental Polishing - Methodsen_US
dc.subject.meshElectrochemical Techniquesen_US
dc.subject.meshEquipment Designen_US
dc.subject.meshEquipment Failureen_US
dc.subject.meshHumansen_US
dc.subject.meshMagneticsen_US
dc.subject.meshMaterials Testingen_US
dc.subject.meshNickel - Chemistryen_US
dc.subject.meshPliabilityen_US
dc.subject.meshRoot Canal Preparation - Instrumentationen_US
dc.subject.meshRotationen_US
dc.subject.meshSodium Hypochlorite - Chemistryen_US
dc.subject.meshStress, Mechanicalen_US
dc.subject.meshSurface Propertiesen_US
dc.subject.meshTitanium - Chemistryen_US
dc.titleElectropolishing enhances the resistance of nickel-titanium rotary files to corrosion-fatigue failure in hypochloriteen_US
dc.typeArticleen_US
dc.identifier.emailChang, JWW:changww@hkucc.hku.hken_US
dc.identifier.emailCheung, GSP:spcheung@hkucc.hku.hken_US
dc.identifier.authorityChang, JWW=rp00046en_US
dc.identifier.authorityCheung, GSP=rp00016en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.joen.2010.02.025en_US
dc.identifier.pmid20647095-
dc.identifier.scopuseid_2-s2.0-77955430392en_US
dc.identifier.hkuros175898-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955430392&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume36en_US
dc.identifier.issue8en_US
dc.identifier.spage1354en_US
dc.identifier.epage1357en_US
dc.identifier.eissn1878-3554-
dc.identifier.isiWOS:000280691900015-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridPraisarnti, C=36009186600en_US
dc.identifier.scopusauthoridChang, JWW=36652311500en_US
dc.identifier.scopusauthoridCheung, GSP=7005809531en_US

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