The teeth had loads of Streptococcus mutans, a bacterium we know today for causing cavities. Even though the enamel was intact, S. mutans hinted at possible cavity development. Other teeth at the ...

Following is a transcript of the video. Narrator: Meet Streptococcus mutans. He's a bacterium and…a bit of a slob. But this isn't just any mess. It's what's on your teeth! You see, "Strep" and ...

For example, bacteria like Streptococcus mutans and certain species of Lactobacillus are associated with cavity formation.