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Table 3 Comparison of PPT (kg/cm2) values. Each line demonstrates the statistical analysis of a muscle before and after laser exposure

From: Early results of low-level laser application for masticatory muscle pain: a double-blind randomized clinical study

 

Laser Group I

Laser Group II

Placebo Group

 

M (kg/cm2)

SD

p

M (kg/cm2)

SD

p

M (kg/cm2)

SD

p

TA

30.55

4.98

0.017532*

31.55

4.82

0.027532*

34.32

5.67

0.27757 **

TM

33.42

5.37

0.00922 *

35.42

5.71

0.02022 *

36.97

4.36

0.52936 **

TP

32.12

5.71

0.00574 *

36.50

5.67

0.00274 *

38.07

4.46

0.26742 **

MS

22.75

5.52

0.00756 *

23.11

5.86

0.00956 *

25.50

6.00

0.55225 **

MM

20.87

4.87

0.00203 *

19.45

4.44

0.00303 *

23.60

4.72

0.94166 **

MI

23.22

5.11

0.00032 *

19.22

5.05

0.00062 *

26.10

5.52

0.70732 **

SCM

21.77

5.80

0.00031 *

21.50

4.48

0.00061 *

24.75

5.95

0.95113 **

  1. Student t test was used
  2. M mean, SD Standard deviation, 95 % confidence interval, * p < 0.05 statistically significant, ** p ≥ .05 statistically non-significant
  3. TA temporalis anterior, TM temporalis middle, TP temporalis posterior, MS masseter superior, MM masseter middle, MI masseter inferior, SCM sternocleidomasteideous