How can your teeth be dirty if you floss once a day and brush twice a day?

Answer:
Everthing you put in your mouth has all kinds of different bacteria that causes dirt and germs, a lot of it stays on your tongue which developes on and around your teeth and gums.
First answer by Xxflaming angelxx. Last edit by Xxflaming angelxx. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].