Comparison of the High Cycle Fatigue Behavior of the Orthodontic NiTi Wires: An in Vitro Study


  • Fahimeh Farzanegan
  • Hooman Shafaee
  • Hamid Norouzi
  • Hossein Bagheri
  • Abdolrasoul Rangrazi


Orthodontics, Orthodontic Wires, Stress, Mechanical, Fatigue, Elasticity


Objective: To compare the high-cycle fatigue behavior of four commercially available NiTi orthodontic wires. Material and Methods: Twelve NiTi orthodontic wires, round, 0.016-in, three per brand, were selected and divided into four groups: G1 - Heat-activated NiTi, G2 - Superelastic NiTi, G3 - Therma-Ti, and G4 - CopperNiTi. The atomic absorption spectrometry method was used to determine the chemical composition of investigated NiTi wires. We also performed a fatigue test at three-point bending using a universal testing machine for 1000 cycles in a 35 °C water bath. For the first and thousandth cycle, the average plateau load and the plateau length were determined in the unloading area of the force versus displacement diagram. In addition, we calculated the difference between the average plateau load of the first and thousandth cycle (∆F), as well as the difference between the plateau length of both cases (∆L). Results: According to our results, there were no significant differences between the average plateau load of the first and thousandth cycles of each group (p>0.05) and in the plateau length of the first and thousandth cycles of the groups (p>0.05). Conclusion: There were no significant differences between the groups changing the superelasticity property after high-cycle fatigue.


Shahabi M, Movahedi Fazel S, Rangrazi A. Incorporation of chitosan nanoparticles into a cold-cure ortho-dontic acrylic resin: effects on mechanical properties. Biomimetics 2021; 6(1):7.

Scribante A, Contreras-Bulnes R, Montasser MA, Vallittu PK. Orthodontics: bracket materials, adhesives systems, and their bond strength. Biomed Res Int 2016; 2016:1329814.

Heravi F, Bagheri H, Rangrazi A, Zebarjad SM. An in vitro study on the retentive strength of orthodontic bands cemented with CPP-ACP-containing GIC. Mater Res Express 2016; 3(12):125401.

Cerroni S, Pasquantonio G, Condò R, Cerroni L. Orthodontic fixed appliance and periodontal status: An updated systematic review. Open Dent J 2018; 12:614-22.

Millett DT, Glenny AM, Mattick RC, Hickman J, Mandall NA. Adhesives for fixed orthodontic bands. Cochrane Database Syst Rev 2016; 10(10):CD004485.

Belasic TZ, Pejova B, Curkovic HO, Kamenar E, Cetenovic B, Spalj S. Influence of intraoral application of antiseptics and fluorides during orthodontic treatment on corrosion and mechanical characteristics of nickel-titanium alloy in orthodontic appliances. Angle Orthod 2021; 91(4):528-37.

Hernández GS, Espínola GS, Gayosso CÁ, Furuki HK. A comparative study of fatigue resistance of NiTi archwires from three commercial brands. Revista Mexicana de Ortodoncia 2014; 2(4):e247-e50.

Phukaoluan A, Dechkunakorn S, Anuwongnukroh N, Khantachawana A, Kaewtathip P, Kajornchaiyakul J, et al. Effect of the addition of 3% Co in NiTi alloy on loading/unloading force. IOP Conf Ser: Mater Sci Eng 2017; 265:1-6.

Gopikrishnan S, Melath A, Ajith VV, Mathews NB. A comparative study of bio degradation of various orthodontic arch wires: an in vitro study. J Int Oral Health 2015; 7(1):12-7.

Velasco-Ibáñez R, Lara-Carrillo E, Morales-Luckie RA, Romero-Guzmán ET, Toral-Rizo VH, Ramírez-Cardona M, et al. Evaluation of the release of nickel and titanium under orthodontic treatment. Sci Rep 2020; 10(1):22280.

Alobeid A, Hasan M, Al-Suleiman M, El-Bialy T. Mechanical properties of cobalt-chromium wires compared to stainless steel and β-titanium wires. J Orthod Sci 2014; 3(4):137-41.

Reddy RK, Katari PK, Bypureddy TT, Anumolu VNSH, Kartheek Y, Sairam NR. Forces in initial archwires during leveling and aligning: An in-vitro study. J Int Soc Prev Community Dent 2016; 6(5):410-6.

Castro SM, Ponces MJ, Lopes JD, Vasconcelos M, Pollmann MC. Orthodontic wires and its corrosion - The specific case of stainless steel and beta-titanium. J Dent Sci 2015; 10(1):1-7.

Hepdarcan SS, Yılmaz RBN, Nalbantgil D. Which orthodontic wire and working sequence should be preferred for alignment phase? A review. Turk J Orthod 2016; 29(2):47-50.

Ahmed H. Craig's restorative dental materials, fourteenth edition. Br Dent J 2019; 226(9).

Chang H-P, Tseng Y-C. A novel β-titanium alloy orthodontic wire. Kaohsiung J Med Sci 2018; 34(4):202-6.

Gurgel JA, RM Pinzan-Vercelino C, Powers JM. Mechanical properties of beta-titanium wires. Angle Orthod. 2011 May;81(3):478-83.

Özkul İ, Kalay E, Canbay CA. The investigation of shape memory recovery loss in NiTi alloy. Mater Res Express 2019; 6(8):0865a5.

Bartzela TN, Senn C, Wichelhaus A. Load-deflection characteristics of superelastic nickel-titanium wires. Angle Orthod 2007; 77(6):991-8.

Bącela J, Łabowska MB, Detyna J, Zięty A, Michalak I. Functional coatings for orthodontic archwires - A review. Materials (Basel) 2020; 13(15):3257.

Yadav A, Jayaprakash PK, Singh R, Dawer M, Modi P, Sehdev B, et al. Impact of recycling on the mechanical properties of nickel-titanium alloy wires and the efficacy of their reuse after cold sterilization. J Orthod Sci 2020; 9:10.

Bellini H, Moyano J, Gil J, Puigdollers A. Comparison of the superelasticity of different nickel–titanium orthodontic archwires and the loss of their properties by heat treatment J Mater Sci Mater Med 2016; 27(10):158.

Eliades T, Bradley T, Brantley W. Material properties and effects on mechanotherapy. In: Eliades T, Brantley W. Orthodontic Applications of Biomaterials: A Clinical Guide. Cambridge: Woodhead Publishing; 2017. p. 129-140.

Rodrigues PF, Fernandes FB, Magalhães R, Camacho E, Lopes A, Paula A, et al. Thermo-mechanical characterization of NiTi orthodontic archwires with graded actuating forces. J Mech Behav Biomed Mater 2020; 107:103747.

Gravina MA, Brunharo IHVP, Canavarro C, Elias CN, Quintão CCA. Mechanical properties of NiTi and CuNiTi shape-memory wires used in orthodontic treatment. Part 1: stress-strain tests. Dental Press J Orthod 2013; 18(4):35-42.

Kaplan M, Sevost’yanov M, Nasakina E, Baikin A, Sergienko K, Konushkin S, et al. Influence of the surface modification on the mechanical properties of NiTi (55.8 wt% Ni) alloy wire for medical purposes. Inorg Mater Appl Res 2018; 9(4):751-6.

Lepojević N, Šćepan I, Glišić B, Jenko M, Godec M, Hočevar S, et al. Characterisation of NiTi orthodontic archwires surface after the simulation of mechanical loading in CACO2-2 cell culture. Coatings 2019; 9(7):440.

Razali M, Mahmud A, Mokhtar N. Force delivery of NiTi orthodontic arch wire at different magnitude of deflections and temperatures: a finite element study. J Mech Behav Biomed Mater 2018; 77:234-41.

Moore RJ, Watts JT, Hood JA, Burritt DJ. Intra-oral temperature variation over 24 hours. Eur J Orthod 1999; 21(3):249-61.

Meling TR, Ødegaard J. The effect of short-term temperature changes on superelastic nickel-titanium archwires activated in orthodontic bending. Am J Orthod Dentofacial Orthop 2001; 119(3):263-73.

Wilkinson PD, Dysart PS, Hood JA, Herbison GP. Load-deflection characteristics of superelastic nickel-titanium orthodontic wires. Am J Orthod Dentofacial Orthop 2002; 121(5):483-95.

Henriques JFC, Higa RH, Semenara NT, Janson G, Fernandes TMF, Sathler R. Evaluation of deflection forces of orthodontic wires with different ligation types. Braz Oral Res 2017; 31:e49.

Prymak O, Klocke A, Kahl-Nieke B, Epple M. Fatigue of orthodontic nickel–titanium (NiTi) wires in different fluids under constant mechanical stress. Materials Science and Engineering: A 2004; 378(1-2):110-4.

Racek J, Šittner P. Environmental fatigue of superelastic NiTi wire with two surface finishes. J Mech Behav Biomed Mater 2020; 111:104028.

Silva JD, Martins SC, de Azevedo Lopes NI, Resende PD, Santos LA, Buono VTL. Effects of aging treatments on the fatigue resistance of superelastic NiTi wires. Mater. Sci. Eng.: A. 2019; 756(22):54-60.

Atik E, Gorucu-Coskuner H, Akarsu-Guven B, Taner T. A comparative assessment of clinical efficiency between premium heat-activated copper nickel-titanium and superelastic nickel-titanium archwires during initial orthodontic alignment in adolescents: a randomized clinical trial. Prog Orthod 2019; 20(1):46.

Aydin B, Senisik NE, Koskan O. Evaluation of the alignment efficiency of nickel-titanium and copper-nickel-titanium archwires in patients undergoing orthodontic treatment over a 12-week period: A single-center, randomized controlled clinical trial. Korean J Orthod 2018; 48(3):153-62.




How to Cite

Farzanegan, F. ., Shafaee, H. ., Norouzi, H. ., Bagheri, H. ., & Rangrazi, A. . (2022). Comparison of the High Cycle Fatigue Behavior of the Orthodontic NiTi Wires: An in Vitro Study. Pesquisa Brasileira Em Odontopediatria E Clínica Integrada, 22, e210090. Retrieved from



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