Table 4. Least square means and standard deviation (SD) for color and surface roughness .

Material	Polishing	Bleaching	Color (∆E)	Surface roughness (µm)	N
			Mean±SD	Mean±SD
IPS e.max Press	Glaze	Home	1.12 ± 0.57	2.39 ± 0.95	9
		Office	1.11 ± 0.47	3.01 ± 1.45	9
	Meisinger	Home	1.76 ± 1.71	2.51 ± 1.02	9
		Office	0.99 ± 0.34	2.96 ± 1.68	9
	OptraFine	Home	1.65 ± 0.96	2.18 ± 0.82	9
		Office	1.54 ± 0.94	1.60 ± 1.15	9
	D + Z	Home	2.29 ± 1.67	1.61 ± 0.83	9
		Office	2.88 ± 2.54	1.06 ± 0.75	9
IPS e.max CAD	Glaze	Home	1.64 ± 1.36	2.82 ± 1.15	9
		Office	2.67 ± 1.04	2.51 ± 1.38	9
	Meisinger	Home	1.79 ± 1.16	3.33 ± 1.11	9
		Office	2.79 ± 1.47	2.77 ± 1.09	9
	OptraFine	Home	2.48 ± 1.84	3.37 ± 1.25	9
		Office	1.49 ± 0.95	2.71 ± 0.51	9
	D + Z	Home	1.93 ± 1.28	1.61 ± 0.83	9
		Office	1.64 ± 0.42	1.06 ± 0.75	9