Research Article
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 |
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Versus control.
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