Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Properties of Superelastic Nickel-Titanium Wires After Clinical Use

Inés Alcaraz
* ,
Javier Moyano
* ORCID logo ,
Ariadna Pàmies
* ,
Guillem Ruiz
* ,
Montserrat Artés
* ,
Xavier Gil
* ,
Andreu Puigdollers
*
Version 1 : Received: 17 July 2023 / Approved: 17 July 2023 / Online: 18 July 2023 (13:41:45 CEST)

A peer-reviewed article of this Preprint also exists.

Alcaraz, I.; Moyano, J.; Pàmies, A.; Ruiz, G.; Artés, M.; Gil, J.; Puigdollers, A. Properties of Superelastic Nickel–Titanium Wires after Clinical Use. Materials 2023, 16, 5604. Alcaraz, I.; Moyano, J.; Pàmies, A.; Ruiz, G.; Artés, M.; Gil, J.; Puigdollers, A. Properties of Superelastic Nickel–Titanium Wires after Clinical Use. Materials 2023, 16, 5604.

Abstract

The aim of the present study was to describe and determine changes in the superelastic properties of NiTi archwires after clinical use and sterilization. Ten archwires from five different manufacturers (GAC, 3M, ODS, GC, FOR) were cut in two segments and evaluated using a three-point bending test in accordance with ISO 14841:2006. The centre of each segment was deflected to 3.1mm and then unloaded to 0 N to obtain a load-deflection curve. Deflection at the end of the plateau and forces at 3, 2, 1 and 0.5mm on the unloading curve were recorded. Plateau slopes were calculated at 2, 1 and 0.5mm of deflection. Data obtained were statistically analysed to determine differences (p<0.001). Results showed that the degree of superelasticity and exerted forces differed significantly among brand groups. After three months of clinical use, FOR released a greater force for a longer activation period. GC, EURO and FOR archwires seemed to lose their mechanical properties. GC wires released more force than other brand wires after clinical use. Regarding superelasticity after sterilization, GAC, 3M and FOR wires recovered their properties, while EURO archwires lost more.

Keywords

NiTi; Superelasticity; Sterilization; Mechanical properties

Subject

Chemistry and Materials Science, Materials Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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