From: Effect of GaAlAs 940 nm Photobiomodulation on palatal wound healing after free gingival graft surgery: a split mouth randomized controlled clinical trial
Laser
control
p-value*
Mean
SD
Remaining wound area
Baseline
134.60
17.44
Day 7
85.05
27.88
111.74
27.32
< 0.001*
Day 14
20.34
17.55
28.43
20.85
0.048*
Day 21
1.56
3.76
4.48
13.10
0.408
Day 28
0.00
0.09
0.33
0.336