Dentist Explains the 7 Biggest Reasons Teeth Turn Yellow — And How to Keep Your Smile Bright

When plaque accumulates on teeth, it can trap stains and make teeth appear dull or yellow. Failing to brush and floss regularly also increases the risk of tartar buildup, which can further darken tooth surfaces.

Most dentists recommend brushing twice daily, flossing once a day, and scheduling professional cleanings regularly.

5. Certain Foods Can Stain Teeth

Foods such as berries, tomato sauce, curry, soy sauce, and balsamic vinegar contain strong pigments that may contribute to staining.

This does not mean these foods should be avoided entirely. Instead, maintaining good oral hygiene and rinsing with water afterward can help minimize discoloration.

6. Some Medications Affect Tooth Color