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Article: Effect of Environment on Low-cycle Fatigue of a Nickel-Titanium Instrument

TitleEffect of Environment on Low-cycle Fatigue of a Nickel-Titanium Instrument
Authors
KeywordsBreakage
corrosion
cracking
fatigue failure
fracture
nickel-titanium
sodium hypochlorite
Issue Date2007
PublisherElsevier Inc. The Journal's web site is located at http://www.jendodon.com
Citation
Journal Of Endodontics, 2007, v. 33 n. 12, p. 1433-1437 How to Cite?
AbstractThis study examined the low-cycle fatigue (LCF) behavior of a nickel-titanium (NiTi) engine-file under various environmental conditions. One brand of NiTi instrument was subjected to rotational-bending fatigue in air, deionized water, sodium hypochlorite, or silicone oil. The curvature of each instrument, diameter of the fracture cross-section, and the number of rotations to failure were determined. The strain-life relationship in the LCF region was examined by using one-way analysis of variance, and the number of crack origins with χ2, for differences between groups. The results showed a linear relationship, on logarithmic scales, between the LCF life and the surface strain amplitude; regression line slopes were significantly different between noncorrosive (air, silicone oil) and corrosive (water, hypochlorite) environments (P < .05), as well as number of crack origins (P < .05). Hypochlorite was more detrimental to fatigue life than water. In conclusion, environmental conditions significantly affect the LCF behavior of NiTi rotary instruments. Fatigue testing of NiTi engine-files should be in a service-like environment. © 2007 American Association of Endodontists.
Persistent Identifierhttp://hdl.handle.net/10722/67036
ISSN
2015 Impact Factor: 2.904
2015 SCImago Journal Rankings: 1.681
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, GSPen_HK
dc.contributor.authorShen, Yen_HK
dc.contributor.authorDarvell, BWen_HK
dc.date.accessioned2010-09-06T05:51:25Z-
dc.date.available2010-09-06T05:51:25Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of Endodontics, 2007, v. 33 n. 12, p. 1433-1437en_HK
dc.identifier.issn0099-2399en_HK
dc.identifier.urihttp://hdl.handle.net/10722/67036-
dc.description.abstractThis study examined the low-cycle fatigue (LCF) behavior of a nickel-titanium (NiTi) engine-file under various environmental conditions. One brand of NiTi instrument was subjected to rotational-bending fatigue in air, deionized water, sodium hypochlorite, or silicone oil. The curvature of each instrument, diameter of the fracture cross-section, and the number of rotations to failure were determined. The strain-life relationship in the LCF region was examined by using one-way analysis of variance, and the number of crack origins with χ2, for differences between groups. The results showed a linear relationship, on logarithmic scales, between the LCF life and the surface strain amplitude; regression line slopes were significantly different between noncorrosive (air, silicone oil) and corrosive (water, hypochlorite) environments (P < .05), as well as number of crack origins (P < .05). Hypochlorite was more detrimental to fatigue life than water. In conclusion, environmental conditions significantly affect the LCF behavior of NiTi rotary instruments. Fatigue testing of NiTi engine-files should be in a service-like environment. © 2007 American Association of Endodontists.en_HK
dc.languageengen_HK
dc.publisherElsevier Inc. The Journal's web site is located at http://www.jendodon.comen_HK
dc.relation.ispartofJournal of Endodonticsen_HK
dc.rightsThe Journal of Endodontics. Copyright © Lippincott Williams & Wilkins.en_HK
dc.subjectBreakageen_HK
dc.subjectcorrosionen_HK
dc.subjectcrackingen_HK
dc.subjectfatigue failureen_HK
dc.subjectfractureen_HK
dc.subjectnickel-titaniumen_HK
dc.subjectsodium hypochloriteen_HK
dc.subject.meshAiren_HK
dc.subject.meshAnalysis of Varianceen_HK
dc.subject.meshCorrosionen_HK
dc.subject.meshDental Alloysen_HK
dc.subject.meshDental Instrumentsen_HK
dc.subject.meshDental Stress Analysisen_HK
dc.subject.meshEquipment Failureen_HK
dc.subject.meshNickelen_HK
dc.subject.meshPliabilityen_HK
dc.subject.meshRegression Analysisen_HK
dc.subject.meshRoot Canal Preparation - instrumentationen_HK
dc.subject.meshSilicone Oilsen_HK
dc.subject.meshSodium Hypochloriteen_HK
dc.subject.meshTitaniumen_HK
dc.subject.meshWateren_HK
dc.titleEffect of Environment on Low-cycle Fatigue of a Nickel-Titanium Instrumenten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0099-2399&volume=33&spage=1433&epage=1437&date=2007&atitle=Effect+of+environment+on+low-cycle+fatigue+of+a+nickel-titanium+instrumenten_HK
dc.identifier.emailCheung, GSP: spcheung@hkucc.hku.hken_HK
dc.identifier.emailDarvell, BW: b.w.darvell@hku.hken_HK
dc.identifier.authorityCheung, GSP=rp00016en_HK
dc.identifier.authorityDarvell, BW=rp00007en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.joen.2007.08.007en_HK
dc.identifier.pmid18037053-
dc.identifier.scopuseid_2-s2.0-36248943047en_HK
dc.identifier.hkuros139812en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-36248943047&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume33en_HK
dc.identifier.issue12en_HK
dc.identifier.spage1433en_HK
dc.identifier.epage1437en_HK
dc.identifier.eissn1878-3554-
dc.identifier.isiWOS:000251589700010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCheung, GSP=7005809531en_HK
dc.identifier.scopusauthoridShen, Y=7404767171en_HK
dc.identifier.scopusauthoridDarvell, BW=7005953926en_HK

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