Cyclic fatigue resistance of reduced-taper nickel-titanium (NiTi) instruments in doubled-curved (S-shaped) canals at body temperature

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dc.authorid0000-0001-8656-7101
dc.contributor.authorUslu, Gülşah
dc.contributor.authorGündoğar, Mustafa
dc.contributor.authorÖzyürek, Taha
dc.contributor.authorPlotino, Gianluca
dc.date.accessioned2021-04-05T08:23:00Z
dc.date.available2021-04-05T08:23:00Z
dc.date.issued2020
dc.departmentİstanbul Medipol Üniversitesi, Diş Hekimliği Fakültesi, Endodonti Ana Bilim Dalı
dc.description.abstractBackground. This study was conducted to compare the cyclic fatigue resistance of VDW.ROTATE, TruNatomy Prime, HyFlex CM, and 2Shape nickel-titanium (NiTi) rotary instruments in double-curved canals in a simulated clinical environment. Methods. Eighty NiTi files were used for the fatigue testing in stainless steel canals compatible with instrument sizes until fracture occurred (n=20): VDW.ROTATE (04./25#), TruNatomy Prime (04./26#), HyFlex CM (04./25#) and 2Shape TS04./25#( 1). For each instrument, the number of cycles to fracture (NCF) was calculated, and the fractured fragment length (FL) was measured. To verify that the files were fractured due to cyclic fatigue, the fractured surfaces of the files were evaluated under a scanning electron microscope. Data were statistically analyzed using the Kruskal-Wallis and Student's t-tests at the %95 confidence level. Results. The failure of the files due to cyclic fatigue was first seen in the apical curvature before the coronal curvature (P<0.05). The highest fatigue resistance was observed in VDW.ROTATE and HyFlex CM files in both curvatures (P<0.05). There were no significant differences in the fatigue resistance between the HyFlex CM and VDW.ROTATE files or between the 2Shape and the TruNatomy files (P>0.05). There was no difference in the fractured lengths of the files between the apical and coronal curvatures (P>0.05). Conclusion. In artificial S-shaped root canals, VDW.ROTATE and HyFlex CM files exhibited higher fatigue resistance compared to 2Shape and TruNatomy files.
dc.identifier.citationUslu, G., Gündoğar, M., Özyürek, T. ve Plotino, G. (2020). Cyclic fatigue resistance of reduced-taper nickel-titanium (NiTi) instruments in doubled-curved (S-shaped) canals at body temperature. Journal of Dental Research Dental Clinics Dental Prospects, 14(2), 111-115. https://dx.doi.org/10.34172/joddd.2020.024
dc.identifier.doi10.34172/joddd.2020.024
dc.identifier.endpage115
dc.identifier.issn2008-210X
dc.identifier.issn2008-2118
dc.identifier.issue2
dc.identifier.startpage111
dc.identifier.urihttps://dx.doi.org/10.34172/joddd.2020.024
dc.identifier.urihttps://hdl.handle.net/20.500.12511/6689
dc.identifier.volume14
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherTabriz University of Medical Sciences, Faculty of Dentistry
dc.relation.ispartofJournal of Dental Research Dental Clinics Dental Prospectsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsAttribution 4.0 International*
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectDouble Curvature
dc.subjectFatigue Resistance
dc.subjectNickel-Titanium
dc.subjectRotary Instruments
dc.titleCyclic fatigue resistance of reduced-taper nickel-titanium (NiTi) instruments in doubled-curved (S-shaped) canals at body temperature
dc.typeArticle

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