Table 1. Results of biofilm inhibition tests for S. mutans, S. sanguis, and L. acidophilus for composite disks containing NAg (1%, 2%, and 5%) and control group .

Group	Microorganism	Mean ± SD	CFU/mL decrease (%) compared to the control group
Control	S. mutans	56666±30550	-
	S. sanguis	446666±117189	-
	L. acidophilus	146666±32145	-
Composite disks containing 1% nanoparticle	S. mutans	7000±1000	87.64
	S. sanguis	8333±1527	98.13
	L. acidophilus	27000±7549	81.59
Composite disks containing 2% nanoparticle	S. mutans	2000±1000	96.47
	S. sanguis	2333±1527	99.47
	L. acidophilus	13333±2516	90.9
Composite disks containing 5% nanoparticle	S. mutans	133±57	99.76
	S. sanguis	300±100	99.93
	L. acidophilus	566±251	99.61