1 to help remove dental plaque.

Malic acid in apples helps to dissolve substances that cause tooth coloring.

2. Help clean up food residue

Apples are rich in cellulose. Linda Nelson, a professor at the School of Dentistry at Baylor University in Texas, suggested that chewing foods rich in cellulose after meals can clean up the residue in teeth.

Extended information tooth protection tips

1, quit smoking

Any tobacco product will cause oral tissue damage and tooth coloring.

Step 2 drink milk

Drinking milk can supplement calcium and strengthen teeth and bones.

3. Choose toothpaste containing baking soda.

Weak alkaline baking soda can effectively neutralize harmful acids, help to remove dental plaque, strengthen enamel and play a whitening effect.

Step 4 drink plenty of water

Drinking plenty of water can wash away food and bacteria, prevent them from sticking together after meals, produce acidic substances and corrode teeth.

References:

People's Daily Online Health Care: Six Health Care Secrets for Eating Apples to Protect Teeth

People's Daily Online "Eating too many apples and carrots seems to have used whitening stickers"

People's Daily Online "Seven Tips for Protecting Teeth: Flossing"