Effect of CAD/CAM Position and Thickness of Ultra-Translucent Multilayered Zirconia on Color Aspects

Figure 4

Mean values and standard deviations of the CIELAB color attributes for each specimen group. (a) Lightness (L), ranging from 0 (perfect black) to 100 (perfect reflecting diffuser). (b) Green–red coordinate (a), where positive values denote red and negative values signify green. (c) Blue–yellow coordinate (b), with positive values indicating yellow and negative values representing blue. (d) Color difference (ΔE).

(a)

(b)

(c)

(d)