Table 2.

Mean bond strength of adhesives as a function of the number of applications

Subgroup (No. of coats)	Group I (Total–etch)	Group II (Self–etch)
	Mean ± S.D	Mean ± S.D
1	15.97 ± 0.40*	10.51 ± 0.56*
2	17.49 ± 0.39*	16.30 ± 0.15*
3	22.29 ± 0.70*	15.42 ± 0.19*
4	15.64 ± 0.31*	14.29 ± 0.23*
6	15.23 ± 0.47*	10.66 ± 0.54*
8	15.85 ± 0.19*	10.00 ± 0.14*

*Statistically significant groups. P value < 0.0001