TABLE 1.

Inhibition of periodontal pathogens by suspensions of candidate probiotics.

Periodontal pathogen	Candidate probiotic
	L. rhamnosus	L. reuteri	S. salivarius K-12
P. gingivalis	19 ± 1	15 ± 2	20 ± 2
F. nucleatum	11 ± 2	15 ± 1	20 ± 0
A. actinomycetemcomitans	33 ± 2	24 ± 0	41 ± 2

Determined using agar well-diffusion assays. Values are zones of inhibition (mm) and represent mean ± SEM from three separate experiments.