Effect of the Composition of CAD/CAM Composite Blocks on Mechanical Properties

Table 2

Mean (SD) Vickers microhardness, nanohardness, elastic modulus, and the measured and manufacturers’ filler percentages by weight (wt%) for all tested materials. Values with the same superscript letters per column represent nonsignificant statistical difference for each individual property (α=0.05).

Material; type	Material; (code)	Microhardness; (Kg/mm^2)	Nanohardness; (GPa)	Elastic Modulus; (GPa)	Manufacturers’ Filler; (wt)	measured filler; (wt)
Resin composite CAD/CAM blocks	Lava™- Ultimate (LU)	112.6 (0.44)	1.25 (0.05)	12.14 (0.76)	80	74.8(0.1)
	Shofu (SH)	73.12 (1.04)	0.775 (031)	8.79 (0.35)	61	63 (0.02)
	Cerasmart (CS)	80.06 (0.76)	0.81(0.006)	10.36 (0.17)	70	66.1(0.2)
	BRILLIANT; Crios (BC)	82.61(0.49)	0.85 (0.008)	10.98 (0.6)	71	70.1(0.05)
	Grandio Blocs (GR)	121.8(2.1)	1.3(0.08)	14.8(0.4)	86	84.6(0.01)
Polymer infiltrated ceramic network (PICN) ceramic	Vita Enamic; (EN)	203.1(0.43)	3.1 (0.17)	34.56 (1.4)	86	85.1(0.1)
Pure PEEK	Ceramill PEEK (PE)	25.7 (0.05)	0.317(0.008)	2.53 (0.15)	0	.00(0)
Ceramic filled PEEK	Dentokeep (DK)	27.74 (0.19)	0.34(0.03)	3.43 (0.29)	20	27.5(0.06)
Feldspathic ceramic block	Vitablocs Mark II (VM)	502.4 (2.28)	6.83 (0.379)	47.7 (3.47)	100	100(0)
Enamel	EM	313.3 (22.7)	4.03(0.35)	59.7(13)	-	-
Dentine	DN	62.3 (3.3)	0.76( 0.13)	16.5(2.3)	-	-