Dental biofilm, also known as plaque, is the sticky bacterial film that adheres to the surface of your teeth. Plaque forms when the sugars and starches from the food you eat are left on your teeth. Bacteria that live in your mouth thrive on the plaque and produce acids that lead to cavities and gum disease. The longer the plaque stays on your teeth, the greater your risk of developing oral problems. Plaque cannot be removed by rinsing with water. That is why it is so important that you brush your teeth twice daily and visit your dentist every six months for professional cleanings. To further keep plaque under control, make sure you are using a toothpaste that contains fluoride, and floss between your teeth at least once a day to remove food particals and bacteria. You may also consider an antibacterial mouth rinse.