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Table 3 Comparison of flexural force between SS-MIs (n = 140) and TA-MIs (n = 140)

From: Mechanical strength of stainless steel and titanium alloy mini-implants with different diameters: an experimental laboratory study

Diameter (mm) Deformation (mm) Stainless Steel (n = 10) Titanium Alloy (n = 10) p
Mean(N) SD Mean(N) SD
1.2 1 31.27 3.21 27.94 1.95 0.012*
1.3 1 43.68 3.06 38.34 2.39 < 0.001*§
1.4 1 64.56 2.82 43.93 2.40 < 0.001*§
1.5 1 83.10 4.57 60.12 1.42 < 0.001*§
1.6 1 98.83 5.24 68.13 5.75 < 0.001*§
1.7 1 119.95 9.93 95.64 10.22 < 0.001*
1.8 1 129.89 17.14 109.63 12.17 0.007*§
1.2 2 42.70 5.70 36.73 2.00 0.005*§
1.3 2 51.78 2.40 47.60 3.85 0.006*§
1.4 2 78.32 2.57 54.54 2.93 < 0.001*§
1.5 2 95.50 2.88 72.63 2.70 < 0.001*§
1.6 2 101.86 5.04 83.06 4.22 < 0.001*§
1.7 2 137.79 8.58 112.87 4.87 < 0.001*
1.8 2 162.17 9.67 139.84 7.41 < 0.001*§
  1. *Statistically significant at p < 0.05
  2. † Mann-Whitney U test
  3. § t test for independent samples