Table 2 Fracture mode, and nanoleakage expression of each group*.

From: Improvement of Total Etching Dentin Bonding with Subpressure

Groups

Failure Mode (%)

Nanoleakage Expression (%)

IF

CC

CD

M

CI

62.5

12.5

0

25

7.90 ± 3.17A

CA

75

0

0

25

13.02 ± 2.35B

S8I

25

12.5

12.5

50

4.26 ± 1.95C

S8A

25

0

12.5

62.5

9.11 ± 3.05A

S6I

12.5

25

0

62.5

3.70 ± 1.68C

S6A

12.5

0

12.5

75

7.04 ± 1.78A

S4I

0

12.5

12.5

75

1.57 ± 1.00D

S4A

0

12.5

0

87.5

3.21 ± 0.71C,D

  1. Abbreviations: IF, interface failure; CC, cohesive failure in the composite; CD, cohesive failure in the dentin; M, mixed failure.
  2. Chi-square analysis revealed a significant difference in the failure mode between different groups (P = 1.3032E-67).
  3. *Nanoleakage values are expressed as the mean ± standard deviation. Groups with the same letters do not significantly differ (p < 0.05).