All day every day a sticky film of bacteria is trying to form on your teeth. This film or biofilm is called plaque and it interacts with certain foods, mostly sugars, to produce acids that eat away at your tooth’s enamel forming holes or cavities.
The Australian Dental Association recommends brushing your teeth for 2 minutes twice a day with a fluoride toothpaste. When you brush your teeth twice daily, you remove the plaque and food (sugar) from the teeth.