Effect of Nd:YAG Low Level Laser Therapy on Human Gingival Fibroblasts

Table 2

Cell counts of control and test groups for the different time points.

Cells		Mean (SD)	Median (range)	value
24 hours
Controls	4	39500 (10116)	41000 (28000, 48000)
20 s	4	35250 (8382)	37000 (24000, 43000)	0.54
40 s	4	37000 (11605)	38000 (22000, 50000)	0.76
60 s	4	41000 (13216)	40000 (26000, 58000)	0.86
120 s	4	38750 (8539)	37500 (30000, 50000)	0.91
48 hours
Controls	4	44000 (15144)	38000 (34000, 66000)
20 s	4	45500 (5972)	44000 (40000, 54000)	0.86
40 s	4	51500 (9849)	51000 (40000, 64000)	0.43
60 s	4	61500 (5972)	60000 (56000, 70000)	0.07
120 s	4	68000 (6325)	69000 (60000, 74000)	0.03
72 hours
Controls	4	72750 (10500)	69500 (64000, 88000)
20 s	4	58000 (17205)	57000 (40000, 78000)	0.19
40 s	4	79500 (22531)	81000 (52000, 104000)	0.60
60 s	4	81500 (13796)	83000 (64000, 96000)	0.35
120 s	4	83500 (17388)	86000 (60000, 102000)	0.33

Versus control.