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Succinate dehydrogenase enzyme (SDH) production by human gingival fibroblasts detected by the MTT assay according to the energy dose used in the low-level laser therapy.
| Energy dose (J/cm2) | MTT (%) |
|---|---|
| 0 (control) | 100 (96–104) C∗ |
| 0.5 | 111 (110–113) B |
| 1.5 | 94 (92–97) D |
| 3 | 117 (113–119) A |
| 5 | 95 (81–108) CD |
| 7 | 92 (91–96) D |
Values expressed as medians of SDH production (P25–P75) (n = 12). ∗Same letters indicate no statistically significant difference (Mann-Whitney, P > 0.05).
