Tooth discoloration primarily results from staining the enamel surface. Beverages with strong pigments—such as coffee, black tea, oolong tea, and red wine—are the most common culprits. Additionally, condiments like sauces, soy sauce, and ketchup, along with deeply colored foods like curry and chocolate, are also highly staining.
Teeth are more susceptible to staining when dry. Therefore, it's advisable to rinse your mouth with water before and after eating. Furthermore, prolonged contact of beverages in the mouth can also lead to tooth discoloration.Food requires thorough chewing before swallowing, but beverages should not be held in the mouth for extended periods. Using a straw when drinking can also help protect teeth from staining.
Many people brush vigorously to remove plaque, but this is actually counterproductive.Brushing too hard can thin the enamel, allowing the underlying yellowish dentin to show through. What was intended to whiten teeth can instead make them appear more yellow due to excessive force. Therefore, when purchasing a toothbrush, opt for one with soft bristles and brush with moderate pressure.