Table III.

Total dye penetration (μm) and microleakage (%) comparison between the four study groups

Variable	Group	Group	Mean difference	Standard error	P value
Total dye penetration (μm)	1	2	−427.90	131.34	0.013
		3	0.44	131.34	1.000
		4	−107.35	131.34	1.000
	2	1	427.9	131.34	0.013
		3	428.34	131.34	0.013
		4	320.55	131.34	0.114
	3	1	−0.44	131.34	1.000
		2	−428.34	131.34	0.013
		4	−107.79	131.34	1.000
	4	1	107.35	131.34	1.000
		2	−320.55	131.34	0.114
		3	107.79	131.34	1.000
Microleakage (%)	1	2	−6.03	1.89	0.016
		3	0.09	1.89	1.000
		4	−1.93	1.89	1.000
	2	1	6.03	1.89	0.016
		3	6.11	1.89	0.014
		4	4.10	1.89	0.215
	3	1	−0.09	1.89	1.000
		2	−6.11	1.89	0.014
		4	−2.012	1.89	1.000
	4	1	1.93	1.89	1.000
		2	−4.10	1.89	0.215
		3	2.01	1.89	1.000

Group 1: Filtek™ Supreme Ultra Universal Restorative incrementally; Group 2: Filtek™ Supreme Ultra Universal Restorative in bulk; Group 3: Filtek™ Bulk Fill Flowable Restorative; Group 4: SureFil^® SDR^® flow