Setting Reaction of Dental Resin-Modified Glass Ionomer Restoratives as a Function of Curing Depth and Postirradiation Time

Table 4

Vickers hardness (VH) of materials at different depths and postirradiation times (mean and SD in parentheses).

Material	Depth	10 min	1 day	7 days
FL	0 mm	34.7 (3.3) a	29.6 (4.0) a	31.8 (4.4) a
	1 mm	32.5 (4.5) a	30.4 (3.2) a	29.6 (3.4) a
	2 mm	30.4 (3.6) a	31.1 (5.4) a	33.4 (2.9) a
	4 mm	22.0 (1.8) b	31.5 (3.1) a	34.8 (3.3) a
FF	0 mm	35.9 (4.2) a	29.7 (3.3) b	27.1 (3.6) b
	1 mm	37.5 (6.5) a	26.5 (4.8) b	26.9 (3.8) b
	2 mm	35.6 (2.7) a	25.8 (4.3) b	26.3 (2.6) b
	4 mm	31.0 (3.8) b	28.9 (3.5) b	29.7 (4.5) b
VT	0 mm	16.0 (3.3) a	16.2 (1.6) a	20.4 (3.7) b
	1 mm	17.9 (2.7) ab	17.9 (3.0) ab	19.8 (1.6) b
	2 mm	15.2 (2.1) a	16.4 (2.7) a	20.6 (2.6) b
	4 mm	5.3 (1.3) c	14.7 (3.2) a	15.8 (1.9) a

Within the same material, means with same lowercase letters indicate no statistically significant difference between the groups ( > 0.05).