Storage time
Group* |
1 d |
7 d |
14 d |
28 d |
TC |
5.25 ± 0.85 |
14.85 ± 5.80 |
21.52 ± 5.31 |
32.89 ± 4.01 |
HTHPI |
0.12 ± 0.05 |
0.46 ± 0.38 |
0.81 ± 0.52 |
0.96 ± 0.58 |
HTHPNI |
2.15 ± 0.18 |
6.54 ± 0.53 |
11.31 ± 0.74 |
19.41 ± 1.43 |
* TC=conventionally thermo-polymerized UDMA with 0.5 % (w) benzoyl peroxide;
HTHPI=high-temperature high-pressure polymerized UDMA with 0.5% (w) benzoyl
peroxide; HTHPNI=high-temperature high-pressure polymerized UDMA with no
initiator |