Table 2: Intragroup comparison between 5th and 7th generation bonding agents (using unpaired t test)
Group
Mean (MPa)
S.D.
T value
p value
I
5th generation
20.65
1.03
18.927
7th generation
13.07
0.74
II
5th generation
12.02
1.29
10.162
< 0.001
7th generation
7.13
0.82
III
5th generation
15.04
1.12
10.188
7th generation
8.43
1.72
IV
5th generation
22.91
3.70
8.646
7th generation
11.60
1.85