Table 3.

Results of pairwise comparisons of the mean total color difference (ΔE) by the Games-Howell test

I	J	Mean difference (I-J)	P-value	95% CI
				Lower bound	Upper bound
Grengloo	Transbond XT	−0.141	0.995	−1.2426	0.9603
	Unite	−0.694	0.17	−1.5976	0.2098
	System 1+	−0.490	0.661	−1.56	0.5849
	Control	3.323	< 0.001	1.4332	3.2131
Transbond XT	Unite	−0.553	0.272	−1.3747	0.2692
	System 1+	−0.394	0.844	−1.3642	0.6669
	Control	2.464	< 0.001	1.898	3.031
Unite	System 1+	0.204	0.919	−0.5729	0.9811
	Control	3.017	< 0.001	2.451	3.584
System 1+	Control	2.813	< 0.001	2.0531	3.57

CI=Confidence Interval