The influence of autoclave sterilization on the cyclic fatigue of M-wire rotary endodontic instruments

Nenad Stošić; Jelena Popović; Antonije Stanković; Aleksandar Mitić; Marija Nikolić; Kosta Todorović

doi:10.2298/VSP240429058S

Nenad Stošić University of Niš, Faculty of Medicine, Clinic of Dental Medicine, Department of Restorative Dentistry and Endodontics, Niš, Serbia https://orcid.org/0000-0003-4792-7375
Jelena Popović University of Niš, Faculty of Medicine, Clinic of Dental Medicine, Department of Restorative Dentistry and Endodontics, Niš, Serbia https://orcid.org/0000-0001-5558-1066
Antonije Stanković University of Niš, Faculty of Medicine, Niš, Serbia https://orcid.org/0009-0004-5873-774X
Aleksandar Mitić University of Niš, Faculty of Medicine, Clinic of Dental Medicine, Department of Restorative Dentistry and Endodontics, Niš, Serbia https://orcid.org/0000-0002-9137-8441
Marija Nikolić University of Niš, Faculty of Medicine, Clinic of Dental Medicine, Department of Restorative Dentistry and Endodontics, Niš, Serbia https://orcid.org/0000-0002-5202-7497
Kosta Todorović University of Niš, Faculty of Medicine, Department of Oral Surgery, Niš, Serbia https://orcid.org/0000-0002-6837-2017

DOI: https://doi.org/10.2298/VSP240429058S

Keywords: alloys;, dental instruments;, disinfection;, endodontics;, equipment failure

Abstract

Background/Aim. The most important moment in modern endodontics is the inclusion of rotating instruments made of nickel-titanium alloy in daily clinical work, which have supplanted stainless steel instruments due to their superior properties. The aim of this study was to investigate the influence of autoclave sterilization on cyclic fatigue (CF) in two types of rotating instruments produced by M-wire technology with different types of rotation. Methods. This research included two types of M-wire rotary instruments – 48 ProTaper Next^® instruments with full rotation and 48 WaveOne^® Gold instruments with reciprocating rotation. Each of the two groups of instruments was divided into four additional groups of 12 instruments depending on the number of cycles of sterilization in the autoclave. The instruments were tested in an artificial canal with a 2 and 5 mm radius of curvature. Results. Statistically significantly higher resistance to CF was observed with WaveOne^® Gold compared to ProTaper Next^® (p < 0.001) instruments, both in the non-sterilized group and after their exposure to the first, third, and fifth cycle of sterilization. The third and fifth cycle of sterilization significantly reduced resistance to CF in the WaveOne^® Gold (p < 0.001) group. There was no statistically significant difference in CF resistance between sterilized and non-sterilized instruments of the ProTaper Next^® group. Conclusion. Sterilization in an autoclave for instruments based on M-wire technology did not increase resistance to CF.

References

Pereira ES, Gomes RO, Leroy AM, Singh R, Peters OA, Bahia MG, et al. Mechanical behavior of M-Wire and conventional NiTi wire used to manufacture rotary endodontic instruments. Dent Mater 2013; 29(12): e318–24.

Chan WS, Gulati K, Peters OA. Advancing Nitinol: From heat treatment to surface functionalization for nickel–titanium (NiTi) instruments in endodontics. Bioact Mater 2022; 22: 91–111.

Stošić N, Popović J, Anđelković-Apostolović M, Mitić A, Barac R, Nikolić M, et al. Analysis of cyclic fatigue resistance of ProTa-per Universal and ProTaper Next rotary instruments. Serb Dent J 2022; 69(3): 109–14.

Campos AEA, Soares A de J, Limoeiro AG da S, Cintra FT, Fro-zoni M, Campos GR. Cutting efficiency of ProDesign R, Reciproc Blue and WaveOne Gold reciprocating instruments. Res Soc Dev 2021; 10(3): e1710313028.

Pillay M, Vorster M, Van der Vyver PJ. Fracture of endodontic instruments - Part 1: Literature review on factors that influ-ence instrument breakage. S Afr Dent J 2020; 75(10): 553–63.

Kim W, Oh S, Ryu GJ, Kim TH, Kim SJ, Kim DH, et al. Effect of autoclave sterilization on cyclic fatigue and torsional frac-ture resistance of NiTi rotary instruments. Odontology 2020; 108(2): 194–201.

Qaed NA, Mourshed BD, Al-Shamiri HM, Alaizari N, Alhamdah, SS. The Effect of surface topographical changes of two different surface treatments rotary instrument. J Clin Exp Dent 2018; 10(1): e49–53.

Özdemir O, Koçak S, Koçak MM, Sağlam BC. Effects of repeated sterilization cycles on the surface alterations of ProTaper Next, TF Adaptive, HyFlex CM, and 2Shape instruments. J Dent Res Dent Clin Dent Prospects 2021; 15(2): 76–81.

Razavian H, Iranmanesh P, Mojtahedi H, Nazeri R. Effect of au-toclave cycles on surface characteristics of S-file evaluated by scanning electron microscopy. Iran Endod J 2016; 11(1): 29–32.

Almohareb RA, Barakat R, Albakri A, Altamimi M. Effect of Autoclaving Cycles on the Cyclic Fatigue Resistance of Race and Race Evo Nickel-Titanium Endodontic Rotary Files: An In Vitro Study. Metals (Basel) 2021; 11(12): 1947.

Dioguardi M, Arena C, Sovereto D, Aiuto R, Laino L, Illuzzi G, et al. Influence of sterilization procedures on the physical and mechanical properties of rotating endodontic instruments: a systematic review and network meta-analysis. Front Biosci (Landmark Ed) 2021; 26(12): 1697–713.

Keleş A, Eymirli A, Uyanık O, Nagas E. Influence of static and dynamic cyclic fatigue tests on the lifespan of four reciprocat-ing systems at different temperatures. Int Endod J 2019; 52(6): 880–6.

De Ornelas Peraça V, Xavier SR, de Almeida Gomes F, Dos San-tos LG, Souza EM, Pappen FG. Effect of number of uses and sterilization on the instrumented area and resistance of recip-rocating instruments. Restor Dent Endod 2021; 46(2): e28.

Duque JA, Bramante CM, Duarte MAH, Alcalde MP, Silva EJNL, Vivan RR. Cyclic Fatigue Resistance of Nickel-Titanium Reciprocating Instruments after Simulated Clinical Use. J Endod 2020; 46(11): 1771–5.

Özyürek T, Yılmaz K, Uslu G. The effects of autoclave sterili-zation on the cyclic fatigue resistance of ProTaper Universal, ProTaper Next, and ProTaper Gold nickel-titanium instru-ments. Restor Dent Endod 2017; 42(4): 301–8.

Stošić N, Popović J, Apostolović M, Mitić A, Nikolić M, Barac R, et al. Effects of Autoclave Sterilization on Cyclic Fatigue Re-sistance in 5 Types of Rotary Endodontic Instruments: An In Vitro Study. Med Sci Monit 2023; 29: e939694.

Plotino G, Costanzo A, Grande NM, Petrovic R, Testarelli L, Gambarini G. Experimental evaluation on the influence of au-toclave sterilization on the cyclic fatigue of new nickel-titanium rotary instruments. J Endod 2012; 38(2): 222–5.

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 sys-tems. J Endod 2011; 37(11): 1572–5.

Chi D, Zhang Y, Lin X, Tong Z. Cyclic fatigue resistance for six types of nickel titanium instruments at artificial canals with different angles and radii of curvature. Dent Mater J 2021; 40(5): 1129–35.

Pedullà E, Lo Savio F, Plotino G, Grande NM, Rapisarda S, Gam-barini G, et al. Effect of cyclic torsional preloading on cyclic fatigue resistance of ProTaper Next and Mtwo nickel–titanium instruments. G Ital Endod 2015; 29(1): 3–8.

Olcay K, Eyuboglu TF, Erkan E. Cyclic fatigue resistance of waveone gold, protaper next and 2shape nickel titanium rota-ry instruments using a reliable method for measuring tempera-ture. Niger J Clin Pract 2019; 22(10): 1335–40.

Pedullà E, Lo Savio F, Boninelli S, Plotino G, Grande NM, La Ro-sa G, et al. Torsional and Cyclic Fatigue Resistance of a New Nickel-Titanium Instrument Manufactured by Electrical Dis-charge Machining. J Endod 2016; 42(1): 156–9.

Topçuoğlu HS, Düzgün S, Aktı A, Topçuoğlu G. Laboratory com-parison of cyclic fatigue resistance of WaveOne Gold, Reciproc and WaveOne files in canals with a double curva-ture. Int Endod J 2017; 50(7): 713–7.

Hanbazaza N, Abuhaimed TS. Influence of kinematics on the cyclic fatigue of ProTaper Gold and WaveOne Gold. Saudi Endod J 2020; 10(2): 145–51.

Ismail AG, Galal M, Nagy MM. Effect of different kinematics and operational temperature on cyclic fatigue resistance of ro-tary NiTi systems. Bull Natl Res Cent 2020; 44: 116.

Zanza A, Seracchiani M, Reda R, Di Nardo D, Gambarini G, Testarelli L. Role of the Crystallographic Phase of NiTi Rotary Instruments in Determining Their Torsional Resistance during Different Bending Conditions. Materials (Basel) 2021; 14(21): 6324.