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Progress in Orthodontics

Table 4 Comparison of incisal and cervical accumulative moved distances (mm) between sides over time - group 3

From: The effects of corticotomy and piezocision in orthodontic canine retraction: a randomized controlled clinical trial

Source Incisal Cervical
Mean S.D. Exp (β) C. I. P value Mean S.D. Exp (β) C. I. P value
1 week Corticotomy 0.40 0.16 1.00 - - 0.13 0.09 1.00 - -
Piezo 0.51 0.30 1.11 [0.89; 1.37] 0.349 0.15 0.09 1.13 [0.84; 1.51] 0.422
2 weeks Corticotomy 0.54 0.22 1.00 - - 0.17 0.14 1.00 - -
Piezo 0.60 0.29 1.09 [0.88; 1.34] 0.441 0.20 0.13 1.10 [0.83; 1.46] 0.513
4 weeks Corticotomy 0.89 0.39 1.00 - - 0.29 0.15 1.00 - -
Piezo 0.97 0.46 1.04 [0.85; 1.27] 0.679 0.31 0.19 1.04 [0.80; 1.35] 0.754
6 weeks Corticotomy 1.29 0.46 1.00 - - 0.40 0.18 1.00 - -
Piezo 1.32 0.64 1.00 [0.83; 1.21] 0.982 0.40 0.24 0.99 [0.78; 1.26] 0.929
8 weeks Corticotomy 1.77 0.68 1.00 - - 0.62 0.24 1.00 - -
Piezo 1.55 0.64 0.96 [0.80; 1.16] 0.690 0.59 0.32 0.94 [0.75; 1.18] 0.585
10 weeks Corticotomy 2.20 0.87 1.00 - - 0.83 0.31 1.00 - -
Piezo 1.98 0.87 0.93 [0.77; 1.11] 0.399 0.71 0.39 0.89 [0.72; 1.11] 0.299
12 weeks Corticotomy 2.83 0.92 1.00 - - 1.12 0.54 1.00 - -
Piezo 2.35 0.89 0.89 [0.75; 1.06] 0.194 0.91 0.55 0.85 [0.68; 1.05] 0.126
14 weeks Corticotomy 3.33 0.88 1.00 - - 1.44 0.46 1.00 - -
Piezo 2.65 0.99 0.85 [0.72; 1.02] 0.080 1.02 0.47 0.80 [0.64; 1.00] 0.048*
16 weeks Corticotomy 3.76 1.00 1.00 - - 1.67 0.41 1.00 - -
Piezo 3.00 1.08 0.82 [0.69; 0.98] 0.029* 1.22 0.55 0.76 [0.61; 0.96] 0.019*
18 weeks Corticotomy 3.96 0.68 1.00 - - 1.94 0.55 1.00 - -
Piezo 3.16 1.19 0.79 [0.66; 0.94] 0.010* 1.30 0.69 0.72 [0.57; 0.92] 0.008*
20 weeks Corticotomy 4.22 0.95 1.00 - - 2.05 0.60 1.00 - -
Piezo 3.57 1.21 0.76 [0.63; 0.91] 0.003* 1.53 0.78 0.69 [0.53; 0.89] 0.004*
22 weeks Corticotomy 4.41 0.92 1.00 - - 2.33 0.71 1.00 - -
Piezo 3.48 1.08 0.73 [0.60; 0.88] 0.001* 1.68 1.00 0.65 [0.49; 0.86] 0.003*
24 weeks Corticotomy 4.58 0.91 1.00 - - 2.58 0.66 1.00 - -
Piezo 3.92 0.83 0.70 [0.57; 0.85] 0.000* 2.03 0.72 0.62 [0.45; 0.84] 0.002*
  1. p values were obtained by marginal log-linear regression. Level of significance = 5%; *, significant (p < 0.05); SD standard deviation, CI confidence interval (95%), Exp. exponential
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