Evaluation of the impact of raw materials on the fatigue and mechanical properties of ProFile Vortex rotary instruments

Journal of Endodontics
Yong GaoDan Ammon

Abstract

In this in vitro study, raw materials (including stainless steel, conventional superelastic nickel-titanium [NiTi], M-Wire NiTi, and Vortex Blue NiTi) were used to create ProFile Vortex designed 25/.06 instruments and subject these instruments to testing for fatigue resistance, torsional properties, flexibility, and Vickers microhardness. The comparative results in this study will enable the clinician's understanding of the performance of these materials for better choices in application during endodontic procedures. Cyclic fatigue testing was performed by rotating files in an artificially constructed stainless steel canal with a 5-mm radius and a 90° angle of curvature at 500 rpm. Torsional properties and flexibility in bending were assessed according to specification ISO 3630-1. Vickers microhardness was measured on the cross section of instruments with 300-g load and 15-second dwell time. There were significant differences in the average fatigue life and flexibility for instruments made of different materials (P < .05). Vortex Blue was ranked first in both fatigue and flexibility, followed by M-Wire, superelastic wire, and stainless steel. For torsional strength and microhardness, stainless steel and M-Wire were ranked first...Continue Reading

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Citations

May 28, 2014·Journal of Endodontics·Hend Mahmoud Abou El Nasr, Karim Galal Abd El Kader
May 28, 2014·Journal of Endodontics·Matthew ThompsonJames C McPherson
Feb 14, 2013·Journal of Endodontics·Jung-Hong HaHyeon-Cheol Kim
Nov 14, 2012·Journal of Endodontics·Ya ShenMarkus Haapasalo
Apr 24, 2015·Dental Materials Journal·Shaymaa E Elsaka, Amr M Elnaghy
Oct 2, 2015·International Endodontic Journal·A M Elnaghy, S E Elsaka
Apr 7, 2015·Journal of Endodontics·Ya ShenMarkus Haapasalo
Jan 22, 2013·International Endodontic Journal·Y ShenM Haapasalo
Jan 18, 2014·International Endodontic Journal·W HuT Svec
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Aug 25, 2015·Odontology·Ahmed JamlehHideaki Suda
Aug 13, 2014·Journal of Endodontics·Erika Sales Joviano PereiraMaria Guiomar de Azevedo Bahia
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Dec 24, 2014·Journal of Endodontics·Amr M Elnaghy, Shaymaa E Elsaka
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Dec 11, 2017·Clinical Oral Investigations·Murilo Priori AlcaldeRodrigo Ricci Vivan
Mar 27, 2018·International Endodontic Journal·J ZupancE Schäfer

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