Table 3: Mean (standard deviation) ΔE-values. Same superscript letters in the same column and same subscript numbers in the same row indicate a non-significant difference (p > 0.05).

Material	Coffee Mean ΔE-Value (SD)	Coca-Cola Mean ΔE-Value (SD)	Red Wine Mean ΔE-Value (SD)	Distilled Water Mean ΔE-Value (SD)
CAD-Temp (CT)	2.32(0.26)	4.38(0.41)	1.75(0.18)a	0.28(0.14)
Mark II (M)	5.95(0.62)a	2.74(0.65)a1	2.84(1.37)a1	0.94(0.08)a
VITA Enamic (VE)	3.56(0.80)	1.77(0.80)a,b1	6.02(0.78)	0.66(0.11)1
Lava Ultimate (LU)	6.08(0.76)a	1.32(0.14)b1	8.61(0.30)	0.93(0.10)a1