Abstract
Streptococcus mutans has been considered the main etiological agent of dental caries and may be present in the oral cavity as different genotypes, which could have distinct capacities of virulence. In genotyping studies of S. mutans in the oral cavity, saliva has been considered an important habitat of these microorganisms. In a recent work, Tabchoury et al. (2006) found only one genotype…