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Progress in Orthodontics

Table 3 Comparison of median of RANKL gene expression levels among the study groups at day 21

From: Effect of low level laser and low intensity pulsed ultrasound therapy on bone remodeling during orthodontic tooth movement in rats

Comparison of groups

n

Median (IqR)

X2-Statistica (df)

P valueb

Non-treat.

6

0.783 (0.19)

  

Ortho. Control

6

1.806 (0.16)

  

LLLT 100 mW

6

2.758 (0.17)

11.423 (4)

0.000

LIPUS

6

2.420 (0.16)

  

LLLT 100 mW + LIPUS

6

3.014 (0.12)

  
  1. IqR interquartile range
  2. aKruskal-Wallis test was applied
  3. bMann-Whitney test with Bonferroni correction for individual pair was applied, P < 0.001
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