Force Generation From Orthodontic Appliances

[+] Author and Article Information
R. Greif

Department of Mechanical Engineering, Tufts University, Medford, Mass. 02155

M. Coltman

Transportation Systems Center, Cambridge, Mass.

M. Gailus

Cizek Audio, Andover, Mass.

E. Shapiro

Department of Orthodontics, Tufts University, Boston, Mass.

J Biomech Eng 104(4), 280-289 (Nov 01, 1982) (10 pages) doi:10.1115/1.3138360 History: Received November 04, 1981; Revised April 13, 1982; Online June 15, 2009


The design of orthodontic archwires often incorporates complex bends, loops and twists to generate force fields. The determination of the magnitude and direction of these forces requires the solution of three-dimensional problems of geometric nonlinearity. To solve these problems, a computer program is developed based on a combined incremental/iterative algorithm. The findings are verified by comparison with analytic solutions of nonlinear engineering problems, as well as by laboratory testing of orthodontic archwires.

Copyright © 1982 by ASME
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