Dental plaque bacteria with reduced susceptibility to chlorhexidine are multidrug resistant

BMC Microbiology

Table 2 Antibiotic profile of plaque microorganisms

Organisms	Antibiotics Zones of inhibition (mm)
Organisms	Vm	Ap	Km	Gm	Tc	Em	Cm
C. culicis	18	0	4	11	10	18	11
C. indologenes	19	6	4	11	7	22	10
A. johnsonii	4	10	17	16	17	10	26
E. ludwigii	14	5	8	13	11	17	16
S. salivarius	23	32	10	15	11	14	28
P. stutzeri	14	16	12	15	13	14	23
E. coli (control)	1	17	21	20	22	17	25
S. aureus( control)	17	26	20	21	28	18	20

Vm vancomycin, Ap ampicillin, Km kanamycin, Gm gentamicin, Tc tetracycline, Em erythromycin, Cm chloramphenicol
Susceptible: ≥17 mm; Intermediate: 14–16 mm; Resistant: ≤ 13 mm
E. coli, Escherichia coli ATCC 25922; S. aureus, Staphylococcus aureus ATCC 25923

ISSN: 1471-2180