Table 5.

The biofilm formation percentages of species treated with samples of A, E, Z, F, and chlorhexidine 0.2%

Bacteria	OD (570 nm)				CHX 0.2%
	F%	Z%	E%	A%
C. albicans	79*	80*	84	95	19***
S. mutans	48***	72**	79**	91	15***
S. mitis	57***	75**	82*	86	16***
S. salivarius	56***	70**	84	90	17***
L. acidophilus	69***	75***	82**	90	19***
E. coli	70***	70	84	90	17***
S. aureus	65***	75	82*	90	19***

All samples were tested three times in independent experiments

A: Arctium lappa, E: Echinacea purpurea, Z: Zateria multiflora, F: Formulation, CHX: Chlorhexidine

Significance level of p < 0.05 (*); or p < 0.01 (**); or p < 0.001 (***) in comparison with control group