How do you keep porcelain crowns white?

To keep porcelain crowns white, maintain good oral hygiene by brushing twice a day with a non-abrasive toothpaste and flossing regularly to prevent plaque buildup. Avoid staining foods and beverages, such as coffee, tea, and red wine, or use a straw when consuming them. Regular dental cleanings can also help preserve their brightness, and your dentist may recommend professional whitening treatments if needed. Finally, consider using a mouthwash that doesn’t contain harsh colorants to protect the crowns' appearance.