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Table 9 A comparison of real and ideal play of 0.018 brackets

From: Torque expression capacity of 0.018 and 0.022 bracket slots by changing archwire material and cross section

  Ideal play (°) Bracket Engagement angle (°) SD Mean standard error Significant difference
SS .016×.016 15.40 STB 18.63 1.42 0.82 S
2D 16.55 0.74 0.43 S
SS .017×.017 6.96 STB 8.81 0.27 0.16 S
2D 7.20 0.19 0.11 S
SS .018×.018 0.00 STB 5.77 0.16 0.09 S
2D 2.36 0.19 0.11 S
SS .016×.022 10.80 STB 14.64 0.03 0.02 S
2D 12.09 0.47 0.27 S
SS .017×.022 5.31 STB 7.42 0.03 0.02 S
2D 6.01 0.19 0.11 S
SS .017×.025 4.65 STB 6.54 0.05 0.03 S
2D 4.84 0.08 0.05 S
SS .018×.022 0.00 STB 4.86 0.12 0.07 S
2D 1.23 0.19 0.11 S
SS .018×.025 0.00 STB 4.17 0.16 0.09 S
2D 2.26 0.09 0.05 S
ST SS .016×.022 10.80 STB 11.30 0.06 0.03 S
2D 11.30 0.40 0.23 S
ST SS .018×.022 0.00 STB 10.82 0.13 0.08 S
2D 4.98 0.14 0.08 S
TMA .0175×.0175 3.32 STB 9.59 0.87 0.50 S
2D 6.71 0.69 0.40 S
CuNiTi .016×.016 15.40 STB 20.83 0.25 0.14 S
2D 18.59 0.88 0.51 S
CuNiTi .017×.017 6.96 STB 16.36 0.58 0.33 S
2D 16.40 0.76 0.44 S
CuNiTi .018×.018 0.00 STB 8.37 0.46 0.26 S
  2D 5.47 0.74 0.43 S
Nitinol .017×.025 4.65 STB 7.86 0.18 0.10 S
2D 5.94 0.15 0.09 S
NiTi .018×.025 0.00 STB 14.95 0.27 0.15 S
2D 3.10 0.24 0.14 S