Photobiomodulation versus corticosteroid in the management of erosive oral lichen planus: a randomized controlled clinical trial

Table 3 The changes in clinical scores of the lesion between the three studied periods

Clinical score	Baseline	After 6 Weeks	After 12 Weeks	Fr	p
Photobiomodulation group (n = 22)
Min. – Max	2.0 – 5.0	1.0 – 3.0	0.0 – 2.0	43.070	< 0.001
Mean ± SD	3.32 ± 0.99	2.0 ± 0.69	0.77 ± 0.61
Median (IQR)	3.0(3.0 – 4.0)	2.0(2.0 – 2.0)	1.0(0.0 – 1.0)
Significant between periods	p₁ = 0.001, p₂ < 0.001, p₃ = 0.003
Control group (n = 22)
Min. – Max	2.0 – 5.0	1.0 – 3.0	0.0 – 2.0	43.070	< 0.001
Mean ± SD	3.23 ± 1.07	1.95 ± 0.72	0.68 ± 0.72
Median (IQR)	3.0(2.0 – 4.0)	2.0(1.0 – 2.0)	1.0(0.0 – 1.0)
Significant between periods	p₁ = 0.001, p₂ < 0.001, p₃ = 0.003

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