Table 2.

Two-way ANOVA and Bonferroni test results of load-to-failure test

	Thickness			Test statistics†
	1 mm	0.7 mm	0.5 mm
				F	p
Material
MDLV	289.10 ± 28.70A	261.79 ± 42.21A	271.13 ± 38.18A	0.947	0.394
LDLV	339.89 ± 36.23xB	336.22 ± 31.27xB	228.39 ± 76.54yB	19.708	< 0.001
Test Statistics ‡
F	6.336	13.607	4.487
P	0.015	0.001	0.039
Thickness effect: F = 1.190 p = 0.457 Material Effect: F = 0.591 p = 0.532 Thickness x Material Effect: F = 9.430 p < 0.001

: mean, ss: Standart deviations, ^†: Intragroup comparison between thicknesses, Superscripts x and y indicate differences in thickness, ^‡:comparison between materials, Superscripts A and B indicate differences in material measurements. Groups with the same superscripts are statistically similar