Silane coupling agent used

n = 6

Flexural strength (MPa)

UDMA/TEGDMA-based CR

Bis-GMA/TEGDMA-based CR

Mean

S.D.

Mean

S.D.

L-SCA

132^a

5

136^b

20

KBM-5803

133^a

6

138^b

7

KBM-503

129^a

8

130^b

8