Volume 36, Issue 2 (March 2008)

    Evaluation of Austenitic-Ferritic Stainless Steel Wires for Orthodontic Applications

    (Received 9 March 2005; accepted 18 October 2007)

    Published Online: 2007

    CODEN: JTEOAD

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    Abstract

    Several studies have shown that austenitic stainless steels are suitable for use in the final phases of orthodontic treatments, such as finishing and retention. These steels demonstrate appropriate mechanical properties, such as high ultimate tensile strength and good corrosion resistance. A new class of materials, the austenic-ferritic stainless steels, is substituting for austenitic stainless steels in several industrial applications where these properties are necessary. This work supports the hypothesis that orthodontic wires of austenic-ferritic stainless steels can replace austenitic stainless steels. The advantages are cost reduction and decrease of the nickel hypersensitivity effect in patients undergoing orthodontic treatments. The object of this study was to evaluate wires of austenitic-ferritic stainless steel SEW 410 Nr. 14517 (Cr26Ni6Mo3Cu3) produced by cold working through rolling and drawing processes. Tests were performed to evaluate the ultimate tensile strength, hardness, ductility, and formability. In accordance with technical standards the wires exhibited ultimate tensile strength and ductility suitable for orthodontic clinical applications. These austenitic-ferritic wires can be an alternative to substitute the common commercial wires of austenic stainless steels with the advantage of decreasing the nickel content.


    Author Information:

    Itman Filho, A.
    Federal Center of Technology, Jucutuquara, Vitória-ES

    Silva, R. V.
    Federal Center of Technology, Jucutuquara, Vitória-ES

    Gouvêa, C. A. R.
    The University of São Paulo, São Carlos-SP

    Casteletti, L. C.
    The University of São Paulo, São Carlos-SP


    Stock #: JTE100170

    ISSN: 0090-3973

    DOI: 10.1520/JTE100170

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    Author
    Title Evaluation of Austenitic-Ferritic Stainless Steel Wires for Orthodontic Applications
    Symposium , 0000-00-00
    Committee A01