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Table 3 Root resorption in millimeters and percentage of initial root length for lateral and central incisors in maxilla and mandible

From: Root resorption after leveling with super-elastic and conventional steel arch wires: a prospective study

  Mean SD Mean SD 95% CI P Mean SD Mean SD 95% CI P
Pairs 12 11    22 21   
(N = 37) (N = 37)
 mm 0.97 1.00 0.74 0.87 −0.13 to 0.60 0.20 0.71 0.57 0.62 0.94 −0.23 to 0.42 0.55
 % 5.79 5.60 4.30 5.02 −0.54 to 3.52 0.15 4.36 3.45 3.42 5.57 −1.04 to 2.92 0.34
Pairs 42 41    32 31   
(N = 36) (N = 30)
 mm 1.17 0.74 0.73 0.72 0.21 to 0.68 <0.01 1.04 0.82 0.79 0.65 −0.08 to 0.58 0.14
 % 6.65 4.02 4.54 4.22 0.75 to 3.47 <0.01 6.14 4.78 5.07 4.02 −0.88 to 3.01 0.27