Influence of Different Beverages on the Color Stability of Nanocomposite Denture Base Materials

Table 5

Descriptive statistics and results of the one-way ANOVA test for comparison between color changes (ΔE) in the different acrylic resin groups after immersion in different media and relations between ΔE and NBS for all groups.

Group	Coffee		Tea		Cola		Water
	Mean ± SD	NBS	Mean ± SD	NBS	Mean ± SD	NBS	Mean ± SD	NBS
Control (V0)	4.22 ± 0.18^A	3.9	3.25 ± 0.16^A	3	2.30 ± 0.22^A	2.1	1.09 ± 0.04^A	1
Z3	4.02 ± 0.11^B	3.7	3.08 ± 0.15^B	2.8	2.14 ± 0.08^B	2	0.99 ± 0.05^C	0.9
Z7	4.10 ± 0.10^AB	3.8	3.12 ± 0.08^AB	2.9	2.19 ± 0.06^AB	2	1.00 ± 0.04^C	0.9
T3	4.14 ± 0.08^AB	3.8	3.18 ± 0.08^AB	2.9	2.22 ± 0.05^AB	2	1.01 ± 0.04^BC	0.9
T7	4.20 ± 0.03^A	3.9	3.21 ± 0.05^AB	3	2.26 ± 0.05^AB	2.1	1.06 ± 0.04^AB	0.97
S3	4.16 ± 0.07^A	3.8	3.20 ± 0.04^AB	2.9	2.24 ± 0.03^AB	2.1	1.04 ± 0.04^ABC	0.95
S7	4.20 ± 0.04^A	3.9	3.23 ± 0.04^A	3	2.28 ± 0.04^A	2.1	1.08 ± 0.05^A	1
value	<0.001		0.002		0.008		<0.001
Effect size (Eta squared)	0.326		0.274		0.235		0.439

Significant at  ≤ 0.05. Different superscripts in the same column indicate statistically significant difference between groups.