The American Dental Association (ADA) recommends the following for good oral hygiene:
Brush your teeth twice a day with an ADA-accepted fluoride toothpaste.
Clean between teeth daily with floss or an interdental cleaner. Decay causing bacteria are continually growing in the mouth. Flossing removes bacterial plaque and food from between the teeth where toothbrush bristles can't reach. Floss daily!
Eat a nutritious, whole foods diet and limit between meal snacks. Avoid high sugar foods and drinks and refined carbohydrates.