Cyclic fatigue and fracture surfaces evaluation of different nickel titanium endodontic files
Khaleefah, O., El-Souda, A., Badr, A. (2021). Cyclic fatigue and fracture surfaces evaluation of different nickel titanium endodontic files. EKB Journal Management System, 67(Issue 1 - January (Conservative Dentistry and Endodontics)), 883-891. doi: 10.21608/edj.2020.50569.1352
Omar Khaleefah; Ahmed A El-Souda; Amany El-Said Badr. "Cyclic fatigue and fracture surfaces evaluation of different nickel titanium endodontic files". EKB Journal Management System, 67, Issue 1 - January (Conservative Dentistry and Endodontics), 2021, 883-891. doi: 10.21608/edj.2020.50569.1352
Khaleefah, O., El-Souda, A., Badr, A. (2021). 'Cyclic fatigue and fracture surfaces evaluation of different nickel titanium endodontic files', EKB Journal Management System, 67(Issue 1 - January (Conservative Dentistry and Endodontics)), pp. 883-891. doi: 10.21608/edj.2020.50569.1352
Khaleefah, O., El-Souda, A., Badr, A. Cyclic fatigue and fracture surfaces evaluation of different nickel titanium endodontic files. EKB Journal Management System, 2021; 67(Issue 1 - January (Conservative Dentistry and Endodontics)): 883-891. doi: 10.21608/edj.2020.50569.1352

Cyclic fatigue and fracture surfaces evaluation of different nickel titanium endodontic files

Egyptian Dental Journal
Article 11, Volume 67, Issue 1 - January (Conservative Dentistry and Endodontics), January 2021, Pages 883-891    PDF (1.83 M)
Document Type: Original Article
DOI: 10.21608/edj.2020.50569.1352
Authors
Omar Khaleefah* 1; Ahmed A El-Souda1; Amany El-Said Badr2
1Department of Endodontic, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
2Head of Department of Endodontic, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
Abstract
ABSTRACT
Introduction: This study compares the cyclic fatigue resistance of files made of gold technology, such as ProTaper Gold F2 and WaveOne Gold Primary files, and files made of M-Wire technology, such as ProTaper Next X2 and WaveOne files.
Materials and Methods: A total of 45 files were used in this study, which were classified into 4 groups. Cyclic fatigue tests were conducted using a cyclic loading testing machine, with an artificial canal made of stainless steel (angle of curvature: 45°; curvature radius: 5 mm). All rotary instruments were allowed to reciprocate and rotate until complete fracture, and the fracture time was recorded in seconds using a stop watch. To prevent human error, the experiments were also video-recorded.
Results: Gold-Wire files (WaveOne Gold and ProTaper Gold) demonstrated longer time to fracture than that M-Wire files (WaveOne and ProTaper Next) (P < 0.005). In addition, WaveOne files showed more time to fracture than ProTaper Next files (P < 0.005). Fracture surface evaluation coincide with our results.
Conclusions: Under the conditions of this study, the gold alloy files resisted cyclic fatigue better than the M-Wire alloy files, In addition, WaveOne files resist cyclic fatigue better than ProTaper Next files.
Keywords
Keywords: Cyclic fatigue; scanning electron microscopy; voids; Gold technology; M-wire
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