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

Table 1

Overall color change patterns (ΔE) for the different groups.

		N	Mean ΔE	Std. deviation	Std. error	95% confidence interval for mean		F	Sig.
						Lower bound	Upper bound
<0.001 hour	Control	15	1.3460	0.66854	0.17262	0.9758	1.7162	22.434	<0.001
	Silver nanoparticle reinforced	15	22.1340	3.30876	0.85432	20.3017	23.9663
	Carbon nanotube reinforced	15	5.8660	1.99908	0.51616	4.7589	6.9731
24 hours	Control	15	2.7567	1.22313	0.31581	2.0793	3.4340	19.491	<0.001
	Silver nanoparticle reinforced	15	18.4353	3.63610	0.93884	16.4217	20.4489
	Carbon nanotube reinforced	15	4.1033	0.92527	0.23890	3.5909	4.6157
7 days	Control	15	3.3753	1.09621	0.28304	2.7683	3.9824	18.677	<0.001
	Silver nanoparticle reinforced	15	23.9000	4.31245	1.11347	21.5118	26.2882
	Carbon nanotube reinforced	15	9.7593	5.92823	1.53066	6.4764	13.0423

Calculated using one-way ANOVA.Differences significant at .