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Table 5 Mean PPD in the two groups at different time points

From: Effect of laser corticotomy on canine retraction rate: a split-mouth randomized clinical trial

Group

Lateral incisor

Canine

Second premolar

Time 0

Mean ± SD

Time 1

Mean ± SD

Time 0

Mean ± SD

Time 1

Mean ± SD

Time 0

Mean ± SD

Time 1

Mean ± SD

Corticotomy

± 0.33 1.2

MD:1

IQR:0.5

± 0.48 1.37

MD:1.25

IQR:0.5

± 0.41 1.08

MD:1

IQR:0.38

± 0.43 1.37

MD:1.25

IQR:0.88

± 0.45 1.75

MD:2

IQR:0.5

± 0.43 1.87

MD:2

IQR:0.5

Control

± 0.32 1.16

MD:1

IQR:0.38

± 0.43 1.37

MD:1.25

IQR:0.88

± 0.22 1.12

MD:1

IQR:0.38

± 0.28 1.41

MD:1.5

IQR:0.38

± 0.53 1.83

MD:1.75

IQR:0.5

± 0.49 1.83

MD:2

IQR:0.5

P value

0.75

0.93

0.67

0.67

0.93

0.67

  1. Time 0: Before laser corticotomy; Time 1: 1 month after laser corticotomy
  2. Mann-Whitney test