| Microhardness average (KHN) and standard deviations | Distances (mm) | |||
| Elipar S10 LED | Delma LED | Optilux 501 QTH | Elipar 2 ESPE QTH | |
| 69.56 ± 3.56 | 69.98 ± 2.68 | 67.98 ± 6.62 | 57.82 ± 2.81 | 0 |
| 68.42 ± 8.39 | 69.70 ± 1.10 | 63.72 ± 4.75 | 57.74 ± 2.12 | 1 |
| 66.08 ± 5.67 | 66.24 ± 2.90 | 63.26 ± 5.03 | 57.24 ± 3.94 | 2 |
| 61.70 ± 4.56 | 61.96 ± 7.19 | 61.12 ± 2.95 | 52.28 ± 6.47 | 3 |
| 61.54 ± 2.01 | 60.64 ± 6.14 | 60.24 ± 3.40 | 52.32 ± 6.88 | 4 |
| 59.42 ± 8.88 | 60.20 ± 4.57 | 58.16 ± 3.11 | 50.08 ± 8.58 | 5 |
| 58.48 ± 5.31 | 54.70 ± 2.93 | 56.94 ± 3.75 | 50.92 ± 4.15 | 6 |
| 58.50 ± 3.34 | 53.06 ± 5.37 | 53.02 ± 8.32 | 52.24 ± 4.02 | 8 |
| 50.92 ± 11.83 | 48.88 ± 13.95 | 47.48 ± 9.59 | 48.30 ± 7.78 | 10 |