In vitro comparative effects of alcohol-containing and alcohol-free mouthwashes on surface roughness of bulk-fill composite resins

Table 2 Comparison of initial and final surface roughness of XTF and N-Ceram composites

	Composite type	Quantity	Std. Deviation	t	P Value
Initial Surface Roughness	X-tra fil	30	0.497	-0.517	0.605
Initial Surface Roughness	Tetric N-Ceram	30	0.487	-0.517	0.605
Final Surface Roughness	X-tra fil	30	0.601	0.574	0.569
Final Surface Roughness	Tetric N-Ceram	30	0.548	0.574	0.569

ISSN: 1756-0500