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Table 1 Mean values, standard deviation (SD) of moments (Nmm) by type of bracket and wire

From: Torque efficiency of square and rectangular archwires into 0.018 and 0.022 in. conventional brackets

Bracket slot height (in.)

Cross-section

Wire (in.)

Moment mean (SD)

0.018

Square

0.018 × 0.018

18.19 (0.30)

 

Rectangular

0.018 × 0.022

22.93 (0.68)

 

Rectangular

0.018 × 0.025

30.60 (0.37)

0.022

Square

0.019 × 0.019

10.78 (0.86)

 

Rectangular

0.019 × 0.025

15.66 (0.52)

 

Rectangular

0.019 × 0.026

16.51 (0.48)

  1. SD standard deviation