alexa Cyclic Fatigue of Glide Path Rotary NiTi Files in a Double (S-Shaped) Simulated Curvature | OMICS International | Abstract
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Research Article

Cyclic Fatigue of Glide Path Rotary NiTi Files in a Double (S-Shaped) Simulated Curvature

Dina Al-Sudani1*, Gianluca Plotino2, Nicola M Grande2, Sandro Rengo3, Michele Simeone3 and Gianluca Gambarini2

1Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia

2Department of Oral Science, “Sapienza” University of Rome, Rome, Italy

3Department of Oral and Maxillofacial Sciences, University of Naples “Federico II”, Napoli, Italy

*Corresponding Author:
Dina Al-Sudani
Professor of Endodontics
Department of Restorative Dental Sciences
College of Dentistry, King Saud University
P.O. Box 60169, Riyadh 11545, Saudi Arabia
Tel: +96 6504441941
E-mail: [email protected]

Received date : December 21, 2015; Accepted date : January 06, 2015; Published date : January 13, 2016

Citation: Al-Sudani D, Plotino G, Grande NM, Rengo S, Simeone M, et al. (2016) Cyclic Fatigue of Glide Path Rotary NiTi Files in a Double (S-Shaped) Simulated Curvature. Dentistry 6:355. doi:10.4172/2161-1122.1000355

Copyright: © 2016 Al-Sudani D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Objective: The aim of the present study was to compare the fatigue resistance of PathFile (PF) and ProGlider (PG) NiTi (Nickel-Titanium) rotary files in a double (S-shaped) curvature artificial root canal.

Methods: The cyclic fatigue of the following rotary NiTi glide path instruments was tested in a double curvature artificial canal, PF (tip size .16 and .02 taper) and PG (tip size .16 and variable taper). Twenty instruments for each group were tested to fracture in continuous rotary motion at 300 rpm. The number of cycles to failure (NCF) was calculated and the length of the fractured fragment was measured. Data were statistically analyzed with a level of significance set at 5%.

Results: There was no significant difference in cyclic fatigue resistance between the PF and the PG in the apical curvature (p>0.05). However, in the coronal curvature the NCF value was significantly higher for the PG than for the PF (p<0.05). The NCF values were significantly lower (p<0.05) in the apical curvature of the artificial canal than in the coronal curvature for both instruments. No differences in the length of the fractured fragments were found (p>0.05).

Conclusion: The instruments were found to be less resistant to cyclic fatigue in the apical curvature of the artificial canal than in the coronal curvature. PG instrument showed significantly greater cyclic fatigue resistance in the coronal curvature.


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