Cyclic fatigue resistance of different nickel-titanium instruments in single and double curvature at room and body temperatures: A laboratory study.
HyFlex EDM
Mtwo
VDW.ROTATE
body temperature
cyclic fatigue
double curvature
dynamic model
Journal
Australian endodontic journal : the journal of the Australian Society of Endodontology Inc
ISSN: 1747-4477
Titre abrégé: Aust Endod J
Pays: Australia
ID NLM: 100888004
Informations de publication
Date de publication:
Dec 2023
Dec 2023
Historique:
received:
31
05
2023
accepted:
07
08
2023
pubmed:
18
8
2023
medline:
18
8
2023
entrez:
18
8
2023
Statut:
ppublish
Résumé
The aim of this study was to compare the cyclic fatigue resistance of nickel-titanium instruments inside single and double-curved canals at different temperatures. 160 HyFlex EDM #20.05 (HEDM), VDW.ROTATE #20.05 and #25.06, Mtwo #25.06 were randomised (n = 10) for the dynamic cyclic fatigue tests according to the curvature (i.e. single and double) at 20° ± 1°C and 35° ± 1°C. The number of cycles to fracture (NCF) was analysed by two-way ANOVA with p < 0.05. Fatigue resistance of all instruments significantly decreased at body temperature in single and double curvatures, except for HEDM in double curvature. The NCF was significantly lower in double curvature than single at both temperatures for all files, except for VDW.ROTATE #20.05 at 35° ± 1°C. Within the study limitations, temperature significantly impaired cyclic fatigue resistance of all files except HEDM #20.05 in double curvature. Similarly, double curvature had a detrimental effect on cyclic fatigue resistance of all files except for VDW.ROTATE #20.05 at body temperature.
Types de publication
Journal Article
Langues
eng
Pagination
592-598Informations de copyright
© 2023 The Authors. Australian Endodontic Journal published by John Wiley & Sons Australia, Ltd on behalf of Australian Society of Endodontology Inc.
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