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 |

1. Gambarini G. Rationale for the use of low-torque endodontic motors in root canal instrumentation. Endod Dent Traumatol 2000;16(3):95-100.
2. Gutmann JL, Gao Y. Alteration in the inherent metallic and surface properties of nickel-titanium root canal instruments to enhance performance, durability and safety: a focused review. Int Endod J 2012;45(2):113-28.
3. Martín B, Zelada G, Varela P, Bahillo JG, Magán F, Ahn S, Rodríguez C. Factors influencing the fracture of nickel-titanium rotary instruments. Int Endod J 2003;36(4):262-6.
4. Plotino G, Costanzo A, Grande NM, Petrovic R, Testarelli L, Gambarini G. Experimental evaluation on the influence of autoclave sterilization on the cyclic fatigue of new nickel-titanium rotary instruments. J Endod 2012;38(2):222-5.
5. Gambarini G, Giansiracusa Rubini A, Sannino G, Di Giorgio G, Piasecki L, Al-Sudani D, et al. Cutting efficiency of nickel-titanium rotary and reciprocating instruments after prolonged use. Odontology 2016;104(1):77-81.
6. Oh SR, Chang SW, Lee Y, Gu Y, Son WJ, Lee W, Baek SH, Bae KS, Choi GW, Lim SM, Kum KY. A comparison of nickel-titanium rotary instruments manufactured using different methods and cross-sectional areas: ability to resist cyclic fatigue. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;109(4):622-8.
7. Silvaggio J, Hicks ML.Effect of heat sterilization on the torsional properties of rotary nickel-titanium endodontic files. J Endod 1997;23(12):731-4.
8. Viana AC, Gonzalez BM, Buono VT, Bahia MG. Influence of sterilization on mechanical properties and fatigue resistance of nickel-titanium rotary endodontic instruments. Int Endod J 2006;39(9):709-15.
9. Chaves Craveiro de Melo M1, Guiomar de Azevedo Bahia M, Lopes Buono VT.Fatigue resistance of engine-driven rotary nickel-titanium endodontic instruments. J Endod 2002;28(11):765-9.
10. Pruett JP, Clement DJ, Carnes DL Jr. Cyclic fatigue testing of nickel-titanium endodontic instruments. J Endod 1997;23(2):77-85.
11. Kuttler S, Garala M, Perez R, Dorn SO. The endodontic cube: a system designed for evaluation of root canal anatomy and canal preparation. J Endod 2001;27(8):533-6.
12. Ullmann CJ, Peters OA. Effect of cyclic fatigue on static fracture loads in ProTaper nickel-titanium rotary instruments. J Endod 2005;31(3):183-6.
13. Javidi M, Zarei M, Vatanpour M.Comparison of canal transportation after preparation by 3 different rotary systems. JIDA 2008; 19 (4) :97-102.
14. Yared GM, Bou Dagher FE, Machtou P. Influence of rotational speed, torque and operator's proficiency on ProFile failures. Int Endod J 2001;34(1):47-53.
15. Huang DM, Zhou XD. Strategies of endodontic infection control. Hua Xi Kou Qiang Yi Xue Za Zhi 2011;29(3):225-8.
16. Casper RB, Roberts HW, Roberts MD, Himel VT, Bergeron BE. Comparison of autoclaving effects on torsional deformation and fracture resistance of three innovative endodontic file systems. J Endod 2011;37(11):1572-5.
17. King JB, Roberts HW, Bergeron BE, Mayerchak MJ. The effect of autoclaving on torsional moment of two nickel-titanium endodontic files. Int Endod J 2012;45(2):156-61.
18. Grande NM, Plotino G, Pecci R, Bedini R, Malagnino VA, Somma F. Cyclic fatigue resistance and three-dimensional analysis of instruments from two nickel-titanium rotary systems. Int Endod J 2006;39(10):755-63.
19. Chaves Craveiro de Melo M, Guiomar de Azevedo Bahia M, Lopes Buono VT. Fatigue resistance of engine-driven rotary nickel-titanium endodontic instruments. J Endod 2002;28(11):765-9.
20. Inan U, Aydin C, Demirkaya K. Cyclic fatigue resistance of new and used Mtwo rotary nickel-titanium instruments in two different radii of curvature.. Aust Endod J 2011;37(3):105-8.
21. Nair AS, Tilakchand M, Naik BD. The effect of multiple autoclave cycles on the surface of rotary nickel-titanium endodontic files: An in vitro atomic force microscopy investigation. J Conserv Dent 2015;18(3):218-22
22. Hilt BR, Cunningham CJ, Shen C, Richards N. Torsional properties of stainless-steel and nickel-titanium files after multiple autoclave sterilizations. J Endod 2000;26(2):76-80.

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