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
Table 2: Amount of released UDMA (Mean ± SD, in Mol/g/cm2 x 10-6).