. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: Dent Mater. 2021 Apr 15;37(7):1096–1106. doi: 10.1016/j.dental.2021.03.009

Table 5.

Means (standard deviations) of flexural strength (MPa), crack length (μm) in bilayer and monolithic samples, and the residual stress of each experimental group.

	Flexural strength	Crack length Bilayer	Crack length Porcelain	Residual stress
EG-F	144.5 (29.6)^a	90.3 (4.5)^a	88.2 (3.6)^a	3.9(0.04)
EG-S	153.5 (29.3)^a^*	90.5 (2.4)^a	89.7 (2.1)^a	1.6 (0.01)
G-F	129.0 (22.7)^b	100.5 (2.6)^b^*	98.1 (2.2)^b^*	3.8 (0.01)
G-S	135.5 (28.9)^b	98.9 (1.2)^b^*	96.7 (2.8)^b^*	3.5 (0.01)
CTRL	136.0 (23.6)	89.5 (1.0)	91.4 (4.0)	−3.4 (0.01)

Different letters within a column indicate significant difference among experimental groups (Two-way ANOVA, P<0.05).

Statistical difference when compared to the control group (t-test, P<0.05)