Color Stability of Glass Ionomer Cement after Reinforced with Two Different Nanoparticles

Table 4

Difference in color change among the different groups at 7 days.

Scheffe^a group	N	Subset for alpha = 0.05
		1	2	3
Control	15	3.3753
Carbon nanotube reinforced	15		9.7593
Silver nanoparticle reinforced	15			23.9000
Sig.		1.000	1.000	1.000

Means for groups in homogeneous subsets are displayed. ^aUses harmonic mean sample size = 15.000.