You may not realize it, but even when your mouth is clean, it is full of bacteria. These are naturally occurring microorganisms that like to eat even the smallest bits of leftover food particles. After their meal, they deposit a sticky white substance called plaque, on your teeth. Plaque accumulates after you eat your meals, and it can build up, especially in places where your toothbrush can’t reach. If you don't remove plaque daily, the build-up can harden into a substance called tartar that irritates your gums and can trigger inflammation and gum disease.
With consistent and careful brushing and properly flossing every day, you can eliminate much of this plaque. However, your toothbrush reaches the tops and sides of the teeth, and you need to floss to clean between the teeth because you can actually get cavities in between your teeth! Flossing also helps to eliminate and control bad breath.
Flossing once a day is enough to remove the plaque from in between your teeth. Use about 18 inches of floss wrapped around your fingers on each hand and move up and down each side of your tooth in a c-shaped motion. Repeat these steps in between every tooth and on both sides.