Effect of Removal of Enamel on Rebonding Strength of Resin Composite to Enamel

Table 1

Different groups and their treatments.

Group	Treatment
E	Intact enamel, etched, and bonded
G0	Prepared flat surface, etched, bonded and debonded, then reetched, and rebonded
G1	Prepared flat surface, etched, bonded and debonded, ground for 10 s, then reetched, and rebonded
G2	Prepared flat surface, etched, bonded and debonded, ground for 20 s, then reetched, and rebonded
G3	Prepared flat surface, etched, bonded and debonded, ground for 30 s, then reetched, and rebonded