Germs may be responsible for most infections and diseases, but did you know that countless germs live in healthy people, too? In fact, there could be more of these tiny microbes in your mouth at this very moment than there are people on earth. And that's even true right after you brush your teeth! So what exactly are mouth germs, and what happens to them when you practice good oral hygiene? We'll let you know all about these tiny inhabitants of your mouth so you can maintain a level of oral health that you can smile about.