Table 3: Mean and standart deviations (SD, n=10) of VHN values and hardness ratios.
| Resin Composites |
Top Surface
Mean ± SD
|
Bottom surface
Mean ± SD
|
Hardness Ratio
Mean ± SD
|
| Surafil SDR flow |
LED |
2mm |
31,20 ± 0,44a |
25,60 ± 0,54e,C |
0,82 ± 0,01 |
| 4mm |
32,20 ± 0,83 |
19,40 ± 1,14f,C |
0,60 ± 0,04 |
| Halogen |
2mm |
33,60 ± 1,14a |
28,60 ± 0,54e,D |
0,85 ± 0,04 |
| 4mm |
32,00 ± 1,41 |
25,20 ± 0,44f,D |
0,78 ± 0,03 |
| X-tra base |
LED |
2mm |
49,20 ± 1,92b,A |
45,80 ± 0,83E |
0,93 ± 0,04 |
| 4mm |
43,40 ± 1,14d,A |
36,00 ± 1,00g,E |
0,82 ± 0,01 |
| Halogen |
2mm |
46,60 ± 1,14b,B |
45,00 ± 1,22 |
0,96 ± 0,02 |
| 4mm |
49,00 ± 1,00d,B |
45,20 ± 1,30g |
0,92 ± 0,03 |
| Tetric EvoCeram |
LED |
2mm |
54,80 ± 0,83c |
48,20 ± 3,34h,F |
0,87 ± 0,05 |
| 4mm |
54,60 ± 1,40 |
41,20 ± 1,30k,F |
0,75 ± 0,03 |
| Halogen |
2mm |
58,20 ± 1,34c |
52,60 ± 2,19h |
0,92 ± 0,15 |
| 4mm |
56,80 ± 5,44 |
50,00 ± 2,44k |
0,88 ± 0,11 |
*Same superscripts statistically indicate significant differences between groups (p ≤ 0.05)