Table 2: Means and standard deviations of colour change (ΔΕab) ΔΕ2000 of different composite resins after immersion in the solutions (24hours and 1 month).

Immersing

Solutions

Ceram X One

Universal

G-aenial

anterior

Coffee

24h

3.78(±0.25)*

1m

6.04(±0.41)*,**

24h

4.19(±0.95)*

1m

5.23(±00.62)*

Black Tea

1.49(±0.78)*

1.57(±0.67)*

1.87(±0.74)*

2.58(±0.55)*,**

Distilled water

0.79(±0.55)*

0.85(±0.33)*

0.67(±0.49)*

1.02(±0.51)*

*Mean±SD; *indicate statistical significance (p<0.05) among different staining solutions; ** indicate statistical significance (p<0.05) among different observation periods.