Table 2.

Means (standard deviations) for ∆E values (ANOVA, Tukey's test; p<0.05)

Treatments		Before Polishing (∆E1)			After Repolishing (∆E2)
	Esthet-X	Surefill	Z-250	Esthet-X	Surefill	Z-250
Distilled water	0.66(0.19)a,A	0.33(0.08)a,A	0.38(0.14)a,A	0.45(0.23)a,A	0.45(0.37)a,A	0.46(0.21)a,A
Coffee	3.67(0.64)b,A	3.57(0.98)b,A	4.85(1.33)b,A	1.53(0.39)b,B	2.35(1.09)b,B	2.29(0.76)b,B
Coca-Cola®	1.10(0.26)a,A	0.79(0.40)a,A	0.81(0.16)a,A	0.62(0.14)a,A	0.61(0.28)a,A	0.94(0.25)a,A

Different lowercase letters in columns and uppercase letters in rows indicate statistically significant difference at 5%. P matching value = 0.0087.