Table 5.

Mean values of color change of different filling materials after exposure to distilled water

Time-line	Micro-hybrid			Nano-hybrid			Glass-ionomer
	∆L	∆a	∆b	∆L	∆a	∆b	∆L	∆a	∆b
Day 7	− 5.0 ± 2.68	0.78 ± 0.44	− 0.8 ± 3.92	1.02 ± 0.3	0.92 ± 0.08	3.3 ± 0.55	0.54 ± 6.31	0.02 ± 0.69	− 0.12 ± 2.13
Day 30	1.24 ± 2.15	2.2 ± 0.47	0.88 ± 1.13	− 2.2 ± 6.44	2.18 ± 1.33	2.4 ± 2.65	0.54 ± 6.31	0.02 ± 0.69	− 0.12 ± 2.13