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Table 3 Comparison between different groups in ΔE, ΔL, Δa and Δb as a function of GONPs powder incorporation in 2 different concentrations in resin composite restorative material (independent t-test)

From: The optical behavior of nano filled resin composite loaded with graphene oxide nanoparticles

M ± SD

G1

With Graphene Oxide Nanoparticles (0.05 wt%)

G2

With Graphene Oxide Nanoparticles (0.2 wt%)

P-value

ΔE

2.82 ± 0.89

12.29 ± 1.33

0.0001*

ΔL

-1.12 ± 0.27

-5.96 ± 0.49

0.0001*

Δa

-0.66 ± 0.07

-1.51 ± 0.23

0.0001*

Δb

-2.6 ± 0.09

-7.8 ± 0.53

0.0001*