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Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments

AIM: The aim was to compare cyclic fatigue, torsional failure, and flexural resistance of NiTi endodontic files: Hyflex CM (HYF), Genius files (GEN), WaveOne Gold (WOG), and ProTaper Universal (PTU). MATERIALS AND METHODS: Fifteen files of each brand were used in cyclic fatigue test and other fiftee...

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Autores principales: Ribeiro Camargo, Carlos Henrique, Bittencourt, Tatiane Sampaio, Hasna, Amjad Abu, Palo, Renato Miotto, Talge Carvalho, Cláudio Antonio, Valera, Marcia Carneiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Wolters Kluwer - Medknow 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7883783/
https://www.ncbi.nlm.nih.gov/pubmed/33623237
http://dx.doi.org/10.4103/JCD.JCD_409_20
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author Ribeiro Camargo, Carlos Henrique
Bittencourt, Tatiane Sampaio
Hasna, Amjad Abu
Palo, Renato Miotto
Talge Carvalho, Cláudio Antonio
Valera, Marcia Carneiro
author_facet Ribeiro Camargo, Carlos Henrique
Bittencourt, Tatiane Sampaio
Hasna, Amjad Abu
Palo, Renato Miotto
Talge Carvalho, Cláudio Antonio
Valera, Marcia Carneiro
author_sort Ribeiro Camargo, Carlos Henrique
collection PubMed
description AIM: The aim was to compare cyclic fatigue, torsional failure, and flexural resistance of NiTi endodontic files: Hyflex CM (HYF), Genius files (GEN), WaveOne Gold (WOG), and ProTaper Universal (PTU). MATERIALS AND METHODS: Fifteen files of each brand were used in cyclic fatigue test and other fifteen files for flexural test and torsional failure test. To the cyclic fatigue test, used torque limit and revolutions per minute were set according to the respective manufacturer guidelines. The test was performed under deionized water at 36°C, and all files were tested in a 3 mm radius of curvature with an angle of curvature of 60°, time of the fracture was recorded. Torsional fatigue test was performed in the torsional machine (Instron MT, USA), recording the fractured time and torque data by the machine software. Flexural fatigue test was performed in 60° of curvature. All data were statistically analyzed by one-way analysis of variance, and Tukey test for multiple comparisons. RESULTS: Cyclic fatigue (seconds)= HYF: 744.1 ± 231.9/GEN: 477.3 ± 220.5/WO: 278.4 ± 57.0/PTU: 152.4 ± 65.2; torsional failure (N × cm)= HYF: 6.85 ± 1.484/GEN: 6.55 ± 0.828/WOG: 5.73 ± 0.360/PTU: 4.43 ± 0.900; flexural resistance (N × mm)= HYF: 0.33 ± 0.294/GEN: 0.19 ± 0.136/WOG: 0.98 ± 0.216/PTU: 1.85 ± 0.276. CONCLUSION: HYF and GEN showed the best results for cyclic fatigue, torsional failure, and flexural resistance, followed by WOG and PTU.
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spelling pubmed-78837832021-02-22 Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments Ribeiro Camargo, Carlos Henrique Bittencourt, Tatiane Sampaio Hasna, Amjad Abu Palo, Renato Miotto Talge Carvalho, Cláudio Antonio Valera, Marcia Carneiro J Conserv Dent Original Article AIM: The aim was to compare cyclic fatigue, torsional failure, and flexural resistance of NiTi endodontic files: Hyflex CM (HYF), Genius files (GEN), WaveOne Gold (WOG), and ProTaper Universal (PTU). MATERIALS AND METHODS: Fifteen files of each brand were used in cyclic fatigue test and other fifteen files for flexural test and torsional failure test. To the cyclic fatigue test, used torque limit and revolutions per minute were set according to the respective manufacturer guidelines. The test was performed under deionized water at 36°C, and all files were tested in a 3 mm radius of curvature with an angle of curvature of 60°, time of the fracture was recorded. Torsional fatigue test was performed in the torsional machine (Instron MT, USA), recording the fractured time and torque data by the machine software. Flexural fatigue test was performed in 60° of curvature. All data were statistically analyzed by one-way analysis of variance, and Tukey test for multiple comparisons. RESULTS: Cyclic fatigue (seconds)= HYF: 744.1 ± 231.9/GEN: 477.3 ± 220.5/WO: 278.4 ± 57.0/PTU: 152.4 ± 65.2; torsional failure (N × cm)= HYF: 6.85 ± 1.484/GEN: 6.55 ± 0.828/WOG: 5.73 ± 0.360/PTU: 4.43 ± 0.900; flexural resistance (N × mm)= HYF: 0.33 ± 0.294/GEN: 0.19 ± 0.136/WOG: 0.98 ± 0.216/PTU: 1.85 ± 0.276. CONCLUSION: HYF and GEN showed the best results for cyclic fatigue, torsional failure, and flexural resistance, followed by WOG and PTU. Wolters Kluwer - Medknow 2020 2021-01-16 /pmc/articles/PMC7883783/ /pubmed/33623237 http://dx.doi.org/10.4103/JCD.JCD_409_20 Text en Copyright: © 2021 Journal of Conservative Dentistry http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Ribeiro Camargo, Carlos Henrique
Bittencourt, Tatiane Sampaio
Hasna, Amjad Abu
Palo, Renato Miotto
Talge Carvalho, Cláudio Antonio
Valera, Marcia Carneiro
Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
title Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
title_full Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
title_fullStr Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
title_full_unstemmed Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
title_short Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
title_sort cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7883783/
https://www.ncbi.nlm.nih.gov/pubmed/33623237
http://dx.doi.org/10.4103/JCD.JCD_409_20
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