Table 1.

The test groups and associated parameters.

Groups # (n)	Scan rate	Overlap	Fluence	Water	Etch	Mean (MPa)	Statistical groupsa
Dentin set
D1 (10)	25-mm/s	1/3	18	H2O	etch	29.9 (6.4)	3
D2 (10)	25-mm/s	1/3	18	H2O		14.1 (7.2)	8,3-6
D3 (10)	50-mm/s	1/3	18	H2O	etch	21.3 (5.5)	1,2,4,5
D4 (10)	50-mm/s	1/3	18	H2O		17.3 (3)	2,3,5,6
D5 (10)	50-mm/s	1/3	18		etch	14.1 (5.3)	8,2-4,6
D6 (10)	50-mm/s	1/3	18			11.3 (5.8)	8,2,4,5
D7 (10)	positive control				etch	39.0 (5.4)
D8 (10)	negative control					5.1 (8)	2,5,6
Enamel set 1
AE1 (10)	50-mm/s	1/3	20	H2O	etch	31.2(2.5)
AE2 (10)	50-mm/s	1/3	20	H2O		5.2(2.4)
AE3 (10)	positive control				etch	37 (3.6)
Enamel set 2
BE1 (10)	30-mm/s	2/9	13	H2O	etch	34.1(4.6)	2,3,6
BE2 (12)	60-mm/s	4/9	13	H2O	etch	34.9(5.1)	1,3,6
BE3 (12)	135-mm/s	1	13	H2O	etch	33.4(5.5)	1,2,6
BE4 (10)	30-mm/s	H-250	13 & 42	H2O		15.3(3.9)
BE5 (10)	30-mm/s	H-500	13 & 42	H2O		5.8(3.1)
BE6 (10)	positive control				etch	36.6(4.9)	1-3

^aGroups with similar numbers are statistically similar (p>0.05) in each set, D, AE, and BE.