PREVENT COFFEE STAINS ON TEETH
1. Sip coffee through a straw.
while typically associated with cold coffee drinks, using a straw to drink hot coffee will reduce the amount that touches your teeth.
2. Rinse with water.
Drinking or rinsing with water after enjoying your coffee can reduce the risk of staining.
3. Wait a half-hour to brush your teeth.
Evidence shows that coffee and other acidic beverages soften tooth enamel, and brushing your teeth right away can damage the enamel and dentin underneath it. But the effect is temporary. Enamel will start to harden within a half hour of being subjected to acids, so it's best to wait 30 minutes after drinking coffee, wine, lemonade or other acidic drinks before brushing your teeth.