Abstract
A rectangular superelastic NiTi archwire is always preferred during the teeth levelling stage of orthodontic treatment due to its capacity to transmit torque and straighten the malposed tooth’s position. The early application of this archwire geometry is only applicable once the round archwire has leveled the teeth to a certain extent. This study investigates the applicability of ageing treatment in improving the bending deformation behavior of rectangular superelastic NiTi archwires. In this regard, the rectangular superelastic NiTi archwires were aged at various temperatures before their bending deformation is determined using a three-point bending test. The ageing treatment successfully reduced the bending force exerted by the superelastic NiTi archwire during the unloading cycle. The bending force decreased from 3.0 to 2.2 N when the archwires were aged at 490 °C, while the residual deflection remained unchanged. This research indicates that ageing may be utilised to reduce the bending force of commercial NiTi archwires, resulting in a more comfortable orthodontic experience.
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Acknowledgements
The authors are grateful for the financial support provided by the Ministry of Higher Education Malaysia for Fundamental Research Grant Scheme with Project Code: FRGS/1/2020/TK0/USM/03/5
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Latiffi, N.A.N.I., Khairi, N.S.S., Razali, M.F., Hassan, M.H. (2023). Improving Bending Deformation Behavior of Superelastic NiTi Archwire by Ageing Treatment. In: Maleque, M.A., Ahmad Azhar, A.Z., Sarifuddin, N., Syed Shaharuddin, S.I., Mohd Ali, A., Abdul Halim, N.F.H. (eds) Proceeding of 5th International Conference on Advances in Manufacturing and Materials Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-9509-5_7
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DOI: https://doi.org/10.1007/978-981-19-9509-5_7
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