Dental experts recommend brushing your teeth at least twice a day, with one of those times being before bed. If you frequently snack or drink sugary beverages during the day, you should brush your teeth more often.
Many foods and drinks, especially those rich in sugars and starches, cause bacteria in the mouth to release acids. These acids can damage the enamel, which is the translucent, white hard tissue covering the outer layer of the tooth crown, protecting the underlying dentin and pulp. Therefore, brushing after meals helps remove food debris and plaque, preventing cavities and periodontal disease.
It's important to note that if you've consumed acidic foods or drinks (like orange juice), it's best to wait at least 30 minutes before brushing. Acidic foods and drinks can weaken the enamel, and brushing immediately afterward can damage it.
Since brushing alone cannot completely remove all food particles and plaque, you should also regularly use dental floss and antibacterial mouthwash to help clean between teeth and maintain oral hygiene.