Table 5 The changes in salivary MDA between the three studied periods

Photobiomodulation group (n = 22)

 Min. – Max

2.0 – 13.30

1.50 – 11.90

1.20 – 8.30

36.488

 < 0.001

 Mean ± SD

7.33 ± 2.92

5.98 ± 2.97

3.50 ± 2.20

 Median (IQR)

7.75(4.7 – 9.0)

6.0(3.5 – 7.9)

2.90(1.5 – 5.4)

Significant between periods

p₁ = 0.042, p₂ < 0.001, p₃ < 0.001

Control group (n = 22)

 Min. – Max

1.10 – 7.30

0.60 – 6.0

0.50 – 3.40

32.345

 < 0.001

 Mean ± SD

4.79 ± 1.70

2.89 ± 1.83

1.61 ± 0.82

 Median (IQR)

4.90(4.1 – 6.0)

2.40(1.5 – 4.9)

1.45(0.90 – 2.1)

Significant between periods

p₁ = 0.003, p₂ < 0.001, p₃ = 0.007