TABLE 2. Number of volunteers that presented Enterobacteriaceae, Pseudomonadaceae and Moraxellaceae on the tongue dorsum according to the smoking habit.

Smoking habit	Positive Cases		Negative Cases		Total
	n	%	n	%	N
Smoking	6	13.95	14	24.56	20
No smoking	37	86.05	43	75.44	80

Fisher's exact test (p=0.0485)