Table 3.
Mean microhardness value for each restoration material examined, with regard to the different bases used and the control samples (no base).
| Restoration Material | Base | Mean (KHN) | SD | N | |
|---|---|---|---|---|---|
| Filtek universal z250 | No base | 107.35 | 3.92 | 15 | |
| IRM | 107.61*** | 6.35 | 20 | ||
| Fuji-IX | 101.01** | 3.59 | 15 | ||
| Voco Xtra-fil | No base | 84.38 | 9.43 | 18 | |
| IRM | 85.16*** | 4.53 | 20 | ||
| Fuji-IX | 92.97** | 7.35 | 15 | ||
| G-aenial | No base | 182.31 | 10.32 | 16 | |
| IRM | 169.98*,*** | 21.16 | 20 | ||
| Fuji-IX | 132.27** | 4.98 | 20 | ||
| Gradia direct | No base | 180.93 | 10.66 | 15 | |
| IRM | 169.12*,*** | 18.49 | 20 | ||
| Fuji-IX | 150.32** | 5.04 | 15 | ||
| Filtek silorane | No base | 123.17 | 3.91 | 15 | |
| IRM | 119.36* | 2.97 | 15 | ||
| Fuji-IX | 117.78** | 3.09 | 15 | ||
| Fuji-IX | No base | 92.38 | 6.87 | 20 | |
| IRM | 95.84 | 5.88 | 16 | ||
Note: *= P<0.05 in comparison with no base
**
= P<0.01 in comparison with no base
***
=P<0.01 in comparison with Fuji-IX as base