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VOLUME 24 , ISSUE 9 ( September, 2023 ) > List of Articles

ORIGINAL RESEARCH

Comparing the EdgeFile X3, GenEndo, HeroGold, and ProTaper Gold Rotary Instruments Regarding the Effect of Different Concentrations and Temperature of NaOCl on Cyclic Fatigue Resistance

Garima Tyagi, Prakash Kumar, Annu Kumari, Parul Shakarwal, Aditya Singh, Pallavi Kusum

Keywords : Cyclic fatigue, EdgeFile X3, GenEndo, Hero Gold, Protaper Gold, Resistance, Sodium hypochlorite

Citation Information : Tyagi G, Kumar P, Kumari A, Shakarwal P, Singh A, Kusum P. Comparing the EdgeFile X3, GenEndo, HeroGold, and ProTaper Gold Rotary Instruments Regarding the Effect of Different Concentrations and Temperature of NaOCl on Cyclic Fatigue Resistance. J Contemp Dent Pract 2023; 24 (9):715-721.

DOI: 10.5005/jp-journals-10024-3515

License: CC BY-NC 4.0

Published Online: 13-10-2023

Copyright Statement:  Copyright © 2023; The Author(s).


Abstract

Aim: This research was carried out with the objective of comparison between GenEndo, Protaper Gold, Hero Gold and EdgeFile X3 regarding the effect of different concentrations of NaOCl. Materials and methods: About 720 study specimens were included in the study. They were divided into four groups. Each group consisted of 180 files. Group A: GenEndo, Group B: Protaper Gold, Group C: Hero Gold, Group D: EdgeFile X3. Each group of instruments were further subdivided into nine subgroups (n = 20 for each subgroup). Testing of the cyclic fatigue was carried out in artificial canals which were prepared inside the blocks of stainless steel. The stainless steel blocks with artificial canals were established in a receiver that was packed with experimental solutions like distilled water, 5.25% NaOCl and 2.5% NaOCl. The adjustment of temperature was done at 25, 37, and 60°C. The rotation of the instrument was carried out inside the artificial canal as per the instructions of the manufacturer. The instrument was rotated until it got fractured. The time taken by the instrument to fracture was recorded in seconds. The number of cycles to fracture (NCF) was analyzed with the help of the equation (NCF = time to fracture × rpm/60). Surfaces at the site of fracture were examined with the help of a scanning electron microscope (EVOLS10, ZEISS) at magnification (300x and 2000x). Results: It was noticed that there was a statistically significant increase in cyclic fatigue when sodium chloride was used as an endodontic irrigant instead of distilled water. The increase in cyclic fatigue was also observed when 5.25% sodium chloride was used instead of 2.5% sodium hypochlorite. Cyclic fatigue increased on change in temperature from 25 to 37°C and from 37 to 60°C. The difference was statistically significant (p < 0.05). It was observed that resistance against cyclic fatigue on treatment with different irrigation solutions at different temperatures was in the order of GenEndo > Protaper Gold > Hero Gold > EdgeFile X3. Conclusion: The resistance against cyclic fatigue in new NiTi rotary files can be affected significantly by different concentrations of sodium hypochlorite irrigant solution and the GenEndo rotary endodontic instrument has the maximum resistance against cyclic fatigue. Clinical significance: Irrigation of the root canal with irrigants, such as sodium hypochlorite (NaOCl) has been recommended strongly. NaOCl is used in the range of 0.5 and 6.5% concentration owing to its antimicrobial activity and tissue dissolution activities, particularly at higher temperatures. It has been postulated that fatigue of rotary endodontic instruments can be influenced by adjoining medium and their concentration.

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  1. Thompson SA. An overview of nickel-titanium alloys used in dentistry. Int Endod J 2000;33(4):297–310. DOI: 10.1046/j.1365-2591. 2000.00339.x.
  2. Hulsmann M, Gressmann G, Schafers F. A comparative study of root canal preparation using FlexMaster and HERO 642 rotary Ni-Ti instruments. Int Endod J 2003;36(5):358–366. DOI: 10.1046/j.1365-2591.2003.00664.x.
  3. Sattapan B, Nervo GJ, Palamara JE, et al. Defects in rotary nickel-titanium files after clinical use. J Endod 2000;26(3):161–165. DOI: 10.1097/00004770-200003000-00008.
  4. Yahata Y, Yoneyama T, Hayashi Y, et al. Effect of heat treatment on transformation temperatures and bending properties of nickel-titanium endodontic instruments. Int Endod J 2009;42(7):621–626. DOI: 10.1111/j.1365-2591.2009.01563.x.
  5. Huang X, Ackland GJ, Rabe KM. Crystal structures and shape-memory behaviour of NiTi. Nat Mater 2003;2(5):307–311. DOI: 10.1038/nmat884.
  6. Parashos P, Messer HH. Rotary NiTi instrument fracture and its consequences. J Endod 2006;32(11):1031–1043. DOI: 10.1016/j.joen.2006.06.008.
  7. Gambarini G, Grande NM, Plotino G, et al. Fatigue resistance of engine-driven rotary nickel-titanium instruments produced by new manufacturing methods. J Endod 2008;34(8):1003–1005. DOI: 10.1016/j.joen.2008.05.007.
  8. Hieawy A, Haapasalo M, Zhou H, et al. Phase transformation behavior and resistance to bending and cyclic fatigue of ProTaper Gold and ProTaper Universal instruments. J Endod 2015;41(7):1134–1138. DOI: 10.1016/j.joen.2015.02.030.
  9. Jamleh A, Yahata Y, Ebihara A, et al. Performance of NiTi endodontic instrument under different temperatures. Odontology 2016;104(3):324–328. DOI: 10.1007/s10266-015-0214-5.
  10. Alfouzan K, Jamleh A. Fracture of nickel titanium rotary instrument during root canal treatment and re-treatment: a 5-year retrospective study. Int Endod J 2018;51(2):157–163. DOI: 10.1111/iej.12826.
  11. Clarkson RM, Moule AJ, Podlich H, et al. Dissolution of porcine incisor pulps in sodium hypochlorite solutions of varying compositions and concentrations. Aust Dent J 2006;51(3):245–251. DOI: 10.1111/j.1834-7819.2006.tb00437.x.
  12. Elnaghy AM, Elsaka SE. Mechanical properties of ProTaper Gold nickel-titanium rotary instruments. Int Endod J 2016;49(11):1073–1078. DOI: 10.1111/iej.12557.
  13. Sarkar NK, Redmond W, Schwaninger B, et al. The chloride corrosion behaviour of four orthodontic wires. J Oral Rehabil 1983;10(2):121–128. DOI: 10.1111/j.1365-2842.1983.tb00106.x.
  14. Pedulla E, Benites A, La Rosa GM, et al. Cyclic fatigue resistance of heat-treated nickel-titanium instruments after immersion in sodium hypochlorite and/or sterilization. J Endod 2018;44(4):648–653. DOI: 10.1016/j.joen.2017.12.011.
  15. Suresh S. Fatigue of Materials, 2nd edition. Cambridge, UK: Cambridge University Press; 1998.
  16. Jamleh A, Sadr A, Nomura N, et al. Endodontic instruments after torsional failure: nanoindentation test. Scanning 2014;36(4):437–443. DOI: 10.1002/sca.21139.
  17. Sirtes G, Waltimo T, Schaetzle M, et al. The effects of temperature on sodium hypochlorite short-term stability, pulp dissolution capacity, and antimicrobial efficacy. J Endod 2005;31(9):669–671. DOI: 10.1097/01.don.0000153846.62144.d2.
  18. Huang X, Shen Y, Wei X, et al. Fatigue resistance of nickel-titanium instruments exposed to high-concentration hypochlorite. J Endod 2017;43(11):1847–1851. DOI: 10.1016/j.joen.2017.06.033.
  19. Cheung GS, Shen Y, Darvell BW. Effect of environment on low-cycle fatigue of a nickel-titanium instrument. J Endod 2007;33(12): 1433–1437. DOI: 10.1016/j.joen.2007.08.007.
  20. Peters OA, Roehlike JO, Baumann MA. Effect of immersion in sodium hypochlorite on torque and fatigue resistance of nickel-titanium instruments. J Endod 2007;33(5):589–593. DOI: 10.1016/j.joen.2007.01.007.
  21. Shen Y, Qian W, Abtin H, et al. Effect of environment on fatigue failure of controlled memory wire nickel-titanium rotary instruments. J Endod 2012;38(3):376–380. DOI: 10.1016/j.joen.2011.12.002.
  22. Pedulla E, Grande NM, Plotino G, et al. Cyclic fatigue resistance of three different nickel-titanium instruments after immersion in sodium hypochlorite. J Endod 2011;37(8):1139–1142. DOI: 10.1016/j.joen.2011.04.008.
  23. De Vasconcelos RA, Murphy S, Carvalho CA, et al. Evidence for reduced fatigue resistance of contemporary rotary instruments exposed to body temperature. J Endod 2016;42(5):782–787. DOI: 10.1016/j.joen.2016.01.025.
  24. Grande NM, Plotino G, Silla E, et al. Environmental temperature drastically affects flexural fatigue resistance of nickel-titanium rotary files. J Endod 2017;43(7):1157–1160. DOI: 10.1016/j.joen.2017.01.040.
  25. Plotino G, Grande NM, Mercade Bellido M, et al. Influence of temperature on cyclic fatigue resistance of ProTaper Gold and ProTaper Universal rotary files. J Endod 2017;43(2):200–202. DOI: 10.1016/j.joen.2016.10.014.
  26. Plotino G, Grande NM, Cordaro M, et al. Influence of the shape of artificial canals on the fatigue resistance of NiTi rotary instruments. Int Endod J 2010;43(1):69–75. DOI: 10.1111/j.1365-2591.2009.01641.x.
  27. Özyürek T, Yılmaz K, Uslu G. The effects of autoclave sterilization on the cyclic fatigue resistance of ProTaper Universal, ProTaper Next, and ProTaper Gold nickel-titanium instruments. Restor Dent Endod 2017;42(4):301–308. DOI: 10.5395/rde.2017.42.4.301.
  28. Plotino G, Grande NM, Cotti E, et al. Blue treatment enhances cyclic fatigue resistance of vortex nickel-titanium rotary files. J Endod 2014;40(9):1451–1453. DOI: 10.1016/j.joen.2014.02.020.
  29. De Azevedo Bahia MG, Fonseca Dias R, Buono VT. The influence of high amplitude cyclic straining on the behaviour of superelastic NiTi. Int J Fatigue 2006;28(9):1087–1091. DOI: 10.1016/j.ijfatigue. 2005.11.008.
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