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Table 2 Means and SD of buccal (BBPT) and palatal (PBPT) bone plate thicknesses at levels 3 mm (3) and 6 mm (6) above CEJ

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

Variables

N

T0

T1

T0–T1

z value

P value

Experimental side

BBPT (3)

21

0.93 ± 0.30

1.02 ± 0.53

− 0.09 ± 0.37

− 1.21

0.22

BBPT (6)

21

0.86 ± 0.40

0.98 ± 0.62

− 0.11 ± 0.33

− 1.30

0.19

PBPT (3)

21

1.01 ± 0.39

1.00 ± 0.38

0.01 ± 0.34

− 0.28

0.77

PBPT (6)

21

2.16 ± 0.71

2.05 ± 0.67

0.10 ± 0.48

− 0.56

0.57

Control side

BBPT (3)

21

0.96 ± 0.43

0.95 ± 0.57

0.009 ± 0.27

− 1.09

0.27

BBPT (6)

21

0.93 ± 0.53

0.95 ± 0.69

− 0.014 ± 0.34

− 0.57

0.56

PBPT (3)

21

0.79 ± 0.43

0.70 ± 0.37

0.08 ± 0.40

− 0.65

0.51

PBPT (6)

21

1.87 ± 0.69

1.80 ± 0.59

0.06 ± 0.45

− 0.82

0.40

Difference between sides

BBPT (3)

42

  

0.009 ± 0.27

− 1.52

0.12

BBPT (6)

42

  

− 0.014 ± 0.34

− 0.92

0.35

PBPT (3)

42

  

0.08 ± 0.40

− 0.72

0.47

PBPT (6)

42

  

0.06 ± 0.45

− 0.09

0.92

  1. SD standard deviation
  2. Wilcoxon signed rank matched pairs test
  3. *Significant P < 0.05