Which of the following is the predominant flora of the mouth?
The eruption of teeth at 6 to 9 months of age leads to colonization by organisms such as Streptococcus mutans and S. sanguis, both a-hemolytic streptococci. An edentulous person loses a-hemolytic streptococci as normal flora. The predominant bacteria on the skin surface are S. epidermidis and Propionibacterium, an anaerobic diphtheroid.
Streptococcus mutans
Lactobacillus
Staphylococcus epidermidis
E.coli
Bacteriology