Orthodontic loop design

Draw and activate loops, see resulting forces and moments.

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What it does

Loop is a program for designing and evaluating 2D orthodontic loops. You can draw the loop on the screen and then activate it. The program will calculate and display the forces and moments that are produced by the loop and applied to the brackets. Large activations are possible and various wire materials and sizes can be used.
This software is not intended for clinical purposes or for planning treatment. It is purely educational. No responsibility will be assumed for the use or misuse of this software.

Tutorial for loop preactivation

Loop was described in these papers:

Understanding orthodontic loop preactivation. Halazonetis DJ. Am J Orthod Dentofacial Orthop. 1998 Feb;113(2):237-41. doi: 10.1016/s0889-5406(98)70143-x. PMID: 9484213
Design and test orthodontic loops using your computer. Halazonetis DJ. Am J Orthod Dentofacial Orthop. 1997 Mar;111(3):346-8. doi: 10.1016/s0889-5406(97)70194-x. PMID: 9082858