Table 2.

Pairwise comparison of the materials

Materials		Mean difference	Standard error	p
DD Bio ZX 2 Color (3Y)	4Y	65.069	13.147	0.000*
	5Y	312.121	13.147	0.000*
	(3 + 5)Y	81.183	13.147	0.000*
	(4 + 5)Y	222.068	13.147	0.000*
DD Cube One ML (4Y)	3Y	-65.069	13.147	0.000*
	5Y	247.052	13.147	0.000*
	(3 + 5)Y	16.114	13.147	1.000
	(4 + 5)Y	156.999	13.147	0.000*
DD Cube X 2 ML (5Y)	3Y	-312.121	13.147	0.000*
	4Y	-247.052	13.147	0.000*
	(3 + 5)Y	-230.938	13.147	0.000*
	(4 + 5)Y	-90.053	13.147	0.000*
IPS e.max ZirCAD Prime (3 + 5)Y	3Y	-81.183	13.147	0.000*
	4Y	-16.114	13.147	1.000
	5Y	230.938	13.147	0.000*
	(4 + 5)Y	140.885	13.147	0.000*
IPS e.max ZirCAD MT Multi (4 + 5)Y	3Y	-222.068	13.147	0.000*
	4Y	-156.999	13.147	0.000*
	5Y	90.053	13.147	0.000*
	(3 + 5)Y	-140.885	13.147	0.000*

*P < 0.05