Silane coupling agent used

n = 6

Flexural modulus (GPa)

UDMA/TEGDMA-based CR

Bis-GMA/TEGDMA-based CR

Mean

S.D.

Mean

S.D.

L-SCA

4.8^a

0.1

5.9^b

0.1

KBM-5803

4.9^a

0.1

6.1^b,c

0.1

KBM-503

5.1^a

0.1

6.2^c

0.2