How do you prevent tooth decay? – College of Dentistry

Brush your teeth properly, twice a day, for at least 2-3 minutes using a fluoride toothpaste.
Use daily floss in the spaces between the teeth.
Clean the tongue with a tongue cleaner.
Use mouthwash to wash away bacteria from all areas and hard-to-reach places.
Maintain a nutritious and balanced diet, limiting sugary and starchy foods.
Visit the dentist regularly.