Mechanical Properties of Several NiTi Alloy Wires in Three-Point Bending Tests

Abstract:

Objective: To clarify mechanical properties of 14 superelastic NiTi orthodontic wires by three-point bending tests. Materials and Methods: The three-point bending test was conducted with a midspan deflection rate of 5 mm/min under constant temperature range 36±1°C. Wires were deflected to 3.1 mm. All data were recorded during the unloading process at deflections 3, 2, 1 and 0.5 mm. to simulate the force a wire exerts as a tooth is moved into the dental arch from a position of malocclusion. Results: The delivered forces changed slightly when the deflection varied during loading and unloading. Sentalloy wire applied the lowest continuous force. Conclusions: Commercial wires may not behave similarly due to minor differences in the production process, and force varies greatly from brand to brand. NiTi wire brands must be selected carefully considering the severity of malocclusion and stage of orthodontic treatment.

• Periodical: Applied Mechanics and Materials (Volume 87)
• Pages: 14-19
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.87.14
• Online since: August 2011
• Authors: Surachai Dechkunakorn, Rutchadakorn Isarapatanapong, Niwat Anuwongnukroh, Nattiree Chiranavanit, Julathep Kajorchaiyakul, Anak Khantachawana
• Keywords: Mechanical Property, NiTi Wire, Three Point Bending Test

References

[1] Phillips RW. Wrought base metal alloys. Wrought gold alloys. In: Skinner's science of dental materials. 9th ed. Philadelphia: W.B. Suanders; 1991. pp.537-51.

[2] Proffit WR, Fields, Jr. HK. Mechanical principles in orthodontic force control. In: Contemporary orthodontics. 2nd ed. St. Louis: Mosby-Year Book; 1993. pp.289-315.

[3] Council on Dental Materials, Instruments and Equipment of the American Dental Association. Orthodontic appliances, devices and materials: materials, instruments and equipment. 2nd ed. Chicago. American Dental Association; 1983. pp.182-92.

DOI: 10.14219/jada.archive.1992.0142

[4] Burstone CJ. Application of bioengineering to clinical orthodontics. In: Orthodontics: current principles and techniques. 2nd ed. St. Louis: Mosby-Year Book; 1994. pp.235-67.

[5] Kawashima I, Ohno H, Sachdeva R. Relationship between Af temperature and load changes in Ni-Ti orthodontic conditions. Dent Mater J 1999; 18(4): 403-12.

DOI: 10.4012/dmj.18.403

[6] Miura F, Mogi M, Ohura Y, Hamanaka H. The super-elastic property of Japanese NiTi alloy wire for use in orthodontics. Am J Ortho Dentofacial Orthop 1986; 90: 1-10.

DOI: 10.1016/0889-5406(86)90021-1

[7] Warita H, Iida J, Yamaguchi S, Matsumoto Y, Fujita Y, Domon S. A study on experimental tooth movement with Ti-Ni alloy orthodontic wires: comparison between light continuous and light dissipating force. J Jpn Orthod Soc 1996; 55: 515-27.

[8] Kusy RP, Dilley GJ. Elastic property ratios of a triple-stranded stainless steel archwire. Am J Orthod 1984; 86: 177-88.

DOI: 10.1016/0002-9416(84)90369-5

[9] Kusy RP, Steven LE. Triple-stranded stainless steel wires-evaluation of mechanical properties and comparison with titanium alloy alternatives. Angle Orthod 1987; 57: 18-32.

[10] Brantly WA, Eliades T. Orthodontic material: scientific and clinical aspects: Thieme, New York; 2001. pp.79-103.

[11] Brantly WA. Orthodontic wires. In: Dental materials: properties and selection: Quintessence Publishing; 1989. pp.381-98.

[12] Buehler WI, Gilfrick JV, Wiley RC. Effect of low-temperature phase changes on the mechanical properties of alloy near composition NiTi. J Appl Physiol 1963; 34: 1475-7.

[13] Civjan S, Huget EF, DeSimon LB. Potential applications of certain nickel-titanium (Nitinol) alloys. J Dent Res 1975; 54: 89-96.

DOI: 10.1177/00220345750540014301