Table 3.

Pairwise comparisons of opalescence of ceramics in different surface treatment subgroups

Pairwise comparisons
Dependent variable: Opalescence
Treatment	(I) Ceramic type	(J) Ceramic type	Mean difference (I–J)	Standard error	Sig. b	95% Confidence interval for difference b
						Lower bound	Upper bound
Glazing	e.max	Enamic	0.024	0.224	1.000	−0.582	0.630
		Feldspathic	1.148*	0.224	0.000	0.542	1.754
		Zr	−0.526	0.224	0.128	−1.132	0.080
	Enamic	F	1.124*	0.224	0.000	0.518	1.730
		Zr	−0.550	0.224	0.098	−1.156	0.056
	F	Zr	−1.674*	0.224	0.000	−2.280	−1.068
Polishing	e.max	Enamic	1.397*	0.224	0.000	0.791	2.003
		F	1.537*	0.224	0.000	0.931	2.143
		Zr	−0.438	0.224	0.323	−1.044	0.168
	Enamic	F	0.141	0.224	1.000	−0.465	0.747
		Zr	−1.835*	0.224	0.000	−2.441	−1.229
	F	Zr	−1.976*	0.224	0.000	−2.582	−1.370

Note: Based on estimated marginal means.

Abbreviations: F, Feldspathic; Sig, Significance; Zr, Zirconia.

*Represent the significant difference (p Value = .05) between ceramics' opalascence.

^bSignificance is equal to .05.