Abstract
The force response of NiTi archwire with respect to tooth movement in orthodontic leveling treatment depends largely on the sliding resistance of a bracket system. This study investigated the influence of contact friction between the wire and the bracket towards the force-deflection behavior of superelastic NiTi wire. A finite-element model of a three-bracket bending configuration was developed, and a user material subroutine was employed to predict the force response. The archwire was bent to a certain displacement representing the curvature of the wire when installed in a patient, and the coefficient of contact friction with the brackets was defined at a range of 0.1–0.5. This investigation revealed that the force plateau of NiTi archwire occurred at positive slope, with steeper gradient recorded on the model with a higher friction coefficient. This implies that lower contact friction is preferable in a bracket system to preserve the force plateau characteristic.
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Acknowledgements
The authors are grateful for the financial support provided by Universiti Sains Malaysia under the grant RUI 1001/PMEKANIK/814244.
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© 2018 The Minerals, Metals & Materials Society
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Razali, M.F., Mahmud, A.S. (2018). Influence of Contact Friction on Force-Deflection of Orthodontic NiTi Archwire: A Computational Study. In: Stebner, A., Olson, G. (eds) Proceedings of the International Conference on Martensitic Transformations: Chicago. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-76968-4_33
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DOI: https://doi.org/10.1007/978-3-319-76968-4_33
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