Skip to main content
. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Eur Polym J. 2011 Feb 1;47(2):162–170. doi: 10.1016/j.eurpolymj.2010.11.007

Table 3.

Final degree of conversion, volumetric shrinkage, pore size and extraction results for BTEG 60-40 composition photoactivated for 10, 20, 30, 60 or 600 s.

Exposure
time (s)		 DC (%) Pore size
before
extraction
(nm3)		 Pore size
after
extraction
(nm3)** 		BisGMA
content in
extract
(mol%)* 		Mass
extracted
(%)* 		BisGMA
content
in gel
(mol%)* 		Volume
shrinkage
(%)
10 44.5 (0.8)e 2.58 (0.01)a 2.34 (0.13) 54 43.1 64.8 4.4 (0.2)
20 53.1 (0.6)d 2.29 (0.01)b 2.06 (0.07) 59 32.9 60.5 5.0 (0.5)
30 56.5 (0.7)c 2.30 (0.01)b 2.07 (0.01) 59 28.6 60.4 5.8 (0.4)
60 60.5 (1.1)b 2.13 (0.01)c 2.06 (0.11) 62 22.4 59.4 5.7 (0.1)
600 67.9 (0.8)a 2.01 (0.01)d 2.05 (0.04) 76 8.5 58.6 6.0 (0.7)
*

Standard deviations for the percentage values were all below 0.01%.

**

All statistically similar (p=0.066).