Volume 1, Issue 3 (Journal of Research in Dental & Maxillofacial Sciences summer 2016)                   J Res Dent Maxillofac Sci 2016, 1(3): 33-37 | Back to browse issues page


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Roghanizad N, Khalilak Z, Vatanpour M, Haghi S, Alirezayi P, Movassagh Z. The Effect of Autoclave Sterilization on the Fracture Resistance of ProTaper Rotary Files. J Res Dent Maxillofac Sci. 2016; 1 (3) :33-37
URL: http://jrdms.dentaliau.ac.ir/article-1-116-en.html
1- Assisstant professor, Department of endodontics,Dental Branch, Islamic Azad University,Tehran, Iran
2- Associated professor, Department of endodontics,Dental Branch, Islamic Azad University ,Tehran, Iran
3- Assisstant professor, Department of Endodontics, Dental Branch, Islamic Azad University,Tehran, Iran , drvatanpour@gmail.com
4- Postgraduate Student, Restorative dentistry Dept,Dental school,shahid beheshti university of medical sciences
5- Assistant professor , Prosthodontics Dept, Dental school, Shahid Beheshti University of Medical Sciences, Tehran , Iran
6- Dental school, Hamedan University of Medical sciences, Hamedan, Iran
Abstract:   (3449 Views)

Background and aim: The purpose of this study was to evaluate the effect of autoclave sterilization on the fracture rate of ProTaper instruments (ex vivo).

Materials and methods: One hundred shaping and finishing ProTaper instruments were used in a crown – down technique for cleaning and shaping the mesial canals of extracted mandibular molars using 5.25% NaOCl for irrigation. In the experimental group, 50 files were steam autoclaved before each use. In the control group, the files were not exposed to the sterilization process. The working time was reported for each file. Independent t- test was employed to evaluate the statistical significance of the measured values.

Results: The instruments that underwent the sterilization processes did not show any statistically significant differences in comparison with those of the control group.

Conclusions: The results of this study showed that sterilization in autoclave in the presence of NaOCl did not lead to a decrease in survival time of the files.

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Type of Study: Original article |

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