Force-deflection comparison of superelastic nickel-titanium archwires

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Daniel C MalloryHarry I Bussa

Abstract

This in vitro study compared the force-deflection behavior of 6 superelastic nickel-titanium orthodontic archwires (0.016 x 0.022 in) under controlled moment and temperature. To simulate leveling, maxillary canine brackets and first molar tubes were bonded in such a manner as to remove the tip and angulation from the system. The wires (n = 10) were passively self-ligated into stainless steel brackets attached to an acrylic jig to simulate the maxillary arch. A testing machine recorded deactivations of 3 distances (5, 4, and 3 mm) at 37 degrees C in the canine position. Force-deflection measurements were recorded from the deactivations only. Forces produced during deactivation, at deflections of 2.5, 2.0, and 1.5 mm, were compared by analysis of variance. Significant differences (P < 0.0001) in forces were observed among the wires at the various deflections. All wires exhibited superelastic behavior, and rankings were derived according to statistically significant differences for each deflection distance.

Citations

Jul 10, 2012·Journal of Orthodontics·Manoela Moraes FigueirêdoFabrício Pinelli Valarelli
Nov 29, 2016·Journal of International Society of Preventive & Community Dentistry·Rajesh Kumar ReddyNemala R V Sairam
Jan 6, 2019·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Luca LombardoGiuseppe Siciliani
May 21, 2011·Dental Materials Journal·Masahiro IijimaItaru Mizoguchi
Oct 26, 2011·European Journal of Orthodontics·Elda GattoGiancarlo Cordasco
Mar 29, 2014·Journal of Applied Oral Science : Revista FOB·Tatiana Sobottka SpiniDenis Jardim Villarinho
Nov 7, 2020·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Aroua FathallahMondher Wali

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