Table 4: Distribution of failure modes in percentage (%) and absolute numbers (n) after shear bond strength test for all tested groups.

GroupsAdhesive Failure - (n)Cohesive Failure - (n)Mixed Failure - (n)Pre-test failures (n)

H/S/A0 (0)30 (3)70 (7)0 (0)
H/S0 (0)100 (10)0 (0)0 (0)
H/S/UA0 (0)20 (2)80 (8)0 (0)
H/UA20 (2)0 (0)80 (8)0 (0)
MBEP/A0 (0)20 (2)80 (8)0 (0)
MBEP0 (0)90 (9)10 (1)0 (0)