Impact of Nanoparticles Additions on the Strength of Dental Composite Resin

Table 5

Descriptive statistics, one-way ANOVA, and pairwise comparisons for FS and surface properties of different subgroups.

Group	Flexural strength (MPa)	Hardness (VHN)	ΔRa (μm)
	Mean ± SD
N0	73.2 ± 8.5^D	63 ± 1.8^C	0.0028 ± 0.0004^C
Z3	111.8 ± 8.5^B	67.8 ± 1.9^B	0.0019 ± 0.0002^A
Z7	128.5 ± 8.9^A	70.0 ± 2^A	0.0022 ± 0.0005^AB
T3	91.0 ± 2.9^C	65.7 ± 1.6^B	0.0018 ± 0.0003^A
T7	80.7 ± 5.8^D	66.3 ± 1.9^B	0.0027 ± 0.0002^C
S3	95.2 ± 2.8^C	66.1 ± 1.3^B	0.0020 ± 0.0003^AB
S7	82.6 ± 3.3^D	68.1 ± 0.9^B	0.0026 ± 0.0004^C
P-value	<0.001	<0.001	<0.001
Effect size	0.817	0.636	0.705

: Significant at , different superscripts vertically indicate statistically significant difference between groups.