The color changes of the tested groups after TC are shown at Table 2 and Fig. 1. The statistical data of Omnichroma composite revealed that; Omnichroma Coff 5000 had the highest statistically significant (ΔE) value followed by Coff 2500, Cola 5000 and Cola 2500. Omnichroma DW 2500 had the least (ΔE) value which non-significant with DW 5000.