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Two-by-two examination of thicknesses in two groups of Er, Cr:YSGG laser and 445 nm diode laser.
| Group | Thickness (mm) | P-value |
|---|---|---|
| 0.3 vs 0.5 | 0.069 | |
| Er, Cr:YSGG laser | 1 vs 0.3 | 0.005 |
| 1 vs 0.5 | 0.45 | |
| 0.5 vs 0.3 | 0.086 | |
| 445 nm diode laser | 1 vs 0.3 | 0.002 |
| 1 vs 0.5 | 0.070 |
∗Mann-Whitney test.
