Effect of Veneering and Hydrothermal Aging on the Translucency of Newly Introduced Extra Translucent and High Translucent Zirconia with Different Thicknesses

Table 4

Mean CR values and standard deviations of veneered (XTV, HTV) and nonveneered (XT, HT) specimens.

Thickness	Aging	XTV	XT	HTV	HT
0.5	Before		0.38 (0.02)^A,a		0.50 (0.02)^B,a
	After		0.47 (0.02)^α,b		0.58 (0.02)^β,b
; 1	Before	0.46 (0.03)^C,c	0.48 (0.02)^C,c	0.57 (0.03)^D,c	0.64 (0.02)^E,c
	After	0.52 (0.05)^γ,d	0.55 (0.02)^γ,d	0.62 (0.03)^δ,d	0.70 (0.02)^ε,d
; 1.5	Before	0.57 (0.03)^F,e	0.58 (0.02)^F,e	0.65 (0.03)^G,e	0.73 (0.03)^H,e
	After	0.62 (0.03)^ζ,f	0.64 (0.02)^ζ,f	0.69 (0.03)^η,f	0.78 (0.02)^θ,f
; 2	Before	0.68 (0.03)^I,g	0.70 (0.02)^I,g	0.76 (0.03)^J,g	0.90 (0.03)^K,g
	After	0.72 (0.02)^ι,h	0.75 (0.03)^ιx,h	0.79 (0.03)^κx,h	0.94 (0.03)^λ,h

Same superscript uppercase letters and symbols indicate no statistically significant difference within each row. Same superscript lowercase letters indicate no statistically significant difference within each column ().