material Etch-and-rinse
(Adper™ Scotchbond)
Self-Etch
(Adper™ Easy Bond)
Fisher P value
Superficial dentin 0,29  (0,1) 0,69  (0,2) b < 0.0001
Deepdentin 0,28  (0,1) 0,51  (0,2) b 0.0003
ANOVA a b    
P value 0.83 0.0059    
aMeans are not significantly different (Fisher’s test)
bif the p-value <0.05, the MPa for debonding is significantly different
Table 2: Fisher’s test results for crack length measurements of the different adhesive types.