Table 3. Pairwise comparison between groups based on the change in color (delta E value from the CIELAB color measuring system) and gloss between pre and post thermocycling.

*statistically significant value of p < 0.05; MD = mean difference, CI = confidence interval.

P-value was derived from Tukey’s post-hoc analysis.

	Groups	MD	P value	95% CI
						Lower	Upper
				Color stability (difference of delta E value)	Control vs. 3%	0.310	0.001*	0.188	0.431
Control vs. 5%	0.642	0.001*	0.520		0.763
Control vs. 10%	0.224	0.001*	0.102		0.345
3% vs. 5%	0.332	0.001*	0.210		0.453
3% vs. 10%	0.086	0.252	0.035		0.207
5% vs. 10%	0.418	0.001*	0.296		0.539
Gloss test (difference of gloss value )	Control vs. 3%	4.15	0.016*	0.601	7.70
	Control vs. 5%	8.42	0.001*	4.87	11.97
	Control vs. 10%	0.94	0.894	-2.60	4.49
	3% vs. 5%	4.26	0.012*	0.717	7.82
	3% vs. 10%	5.10	0.002*	1.54	8.65
	5% vs. 10%	9.37	0.001*	5.81	12.92