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

Table 3

Results of the Pearson correlation analyses between CAD/CAM positions (considering the proportion of the dentin layer) and color attributes in the CIELAB system, stratified by specimen thickness.

Color attributes	Thickness
	1 mm	1.5 mm	2 mm	2.5 mm	3 mm	Overall
L	0.11 (0.631)	0.56 (0.011)	0.66 (0.002)	0.41 (0.069)	0.15 (0.528)	0.33 (0.001)
a	−0.64 (0.002)	0.84 (<0.001)	0.63 (0.003)	0.71 (<0.001)	0.64 (0.002)	0.30 (0.003)
b	0.87 (<0.001)	0.93 (<0.001)	0.94 (<0.001)	0.96 (<0.001)	0.88 (<0.001)	0.78 (<0.001)
ΔE	−0.09 (0.714)	0.09 (0.701)	0.09 (0.704)	−0.30 (0.202)	−0.38 (0.097)	−0.11 (0.271)

Correlation significant at the 0.01 level (two-tailed; ). Correlation significant at the 0.05 level (two-tailed; ).