Journal Article

Influence of autoclave sterilization on the surface parameters and mechanical properties of six orthodontic wires

C. Pernier, B. Grosgogeat, L. Ponsonnet, G. Benay and M. Lissac

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 27, issue 1, pages 72-81
Published in print February 2005 | ISSN: 0141-5387
Published online February 2005 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjh076
Influence of autoclave sterilization on the surface parameters and mechanical properties of six orthodontic wires

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Orthodontic wires are frequently packaged in individual sealed bags in order to avoid cross-contamination. The instructions on the wrapper generally advise autoclave sterilization of the package and its contents if additional protection is desired. However, sterilization can modify the surface parameters and the mechanical properties of many types of material.

The aim of this research was to determine the influence of one of the most widely used sterilization processes, autoclaving (18 minutes at 134°C, as recommended by the French Ministry of Health), on the surface parameters and mechanical properties of six wires currently used in orthodontics (one stainless steel alloy: Tru-Chrome® RMO; two nickel–titanium shape memory alloys: Neo Sentalloy® and Neo Sentalloy with Ionguard® GAC; and three titanium–molybdenum alloys: TMA® and Low Friction TMA® Ormco and Resolve® GAC).

The alloys were analysed on receipt and after sterilization, using surface structure observation techniques, including optical, scanning electron and atomic force microscopy and profilometry. The mechanical properties were assessed by three-point bending tests.

The results showed that autoclave sterilization had no adverse effects on the surface parameters or on the selected mechanical properties. This supports the possibility for practitioners to systematically sterilize wires before placing them in the oral environment.

Journal Article.  0 words. 

Subjects: Restorative Dentistry and Orthodontics

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