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Table 3 Means and SD of the canine root length (mm) between experimental and control sides

From: Three-dimensional evaluation of the effects of injectable platelet rich fibrin (i-PRF) on alveolar bone and root length during orthodontic treatment: a randomized split mouth trial

  N T0 T1 T0–T1 T value P value
Experimental side 21 15.99 ± 2.07 15.47 ± 2.05 0.51 ± 0.48 1.90 0.000*
Control side 21 16.18 ± 2.14 15.40 ± 2.45 0.78 ± 0.93 3.81 0.001*
Difference between sides − 0.26 ± 1.04 − 1.14 0.266
  1. SD standard deviation
  2. Paired t test
  3. *Significant P < 0.05