Table 3: Means and SDs of color change for 1.0 mm thickness for all materials used.

Materials Used Feldspathic Zircon Emax Press Emax CAD
- - - - - - - - -
Surface Glazed Polished Glazed Polished Glazed Polished Glazed Polished
- - - - - - - - -
Mean ΔE* 1.26 4.23 1.261 4.34 1.54 4.15 1.68 4.21
- - - - - - - - -
STDEV 0.41 0.58 0.57 0.61 0.57 0.62 0.46 0.50
P -value P ≤ 0.01 P ≤ 0.01 P ≤ 0.01 P ≤ 0.01

Graph 2: Colour changes of 1.00 mm thick samples for all materials used.