Where did the streptococcus mutans in the human oral cavity come from? Are they dangerous?

Cavities. Where did any of the bacteria come from? They are part of the evolution of life on earth. Strep mutans is the main organism that causes cavities in teeth. We all have it in our mouth.

Related Questions

Are streptococcus mutans the same as oral cavities?

No. Strep mutans are the bacteria in your mouth that cause cavities. They are naturally in everyone's mouth. A cavity occurs when the strep mutans metabolize (feed on) sugars and produce an acid which then weakens the tooth enamel causing a cavity. The longer the acid stays on your tooth the more it weakens the enamel. Thats why saliva is so good, it washes away that acid. Read more...
Not exactly. Strep mutans is one type of bacteria that naturally lives in the mouth and which can cause cavities. Read more...

How does streptococcus mutans (cavities) start and how does it spread?

Mother to child. It is believed that mother to child is how strep mutans is passed on. In some countries people don't get tooth decay. So, those people don't have strep mutans. Read more...
Infection. Streptococcus mutans, the bacteria that causes most of the carious lesions is usually passed from mother to baby by kissing. There is a study that shows if the mother chews a xylitol chewing gum, which reduces the levels of streptococcus mutans in the mother's mouth, the baby will develop fewer carious lesions. Read more...