Everyone loves a beautiful, white smile but overtime teeth can discolor. Teeth can also lose their white appearance for a variety of reasons. Some medications can have a side effect that discolors your teeth. Smoking or tobacco products are not only dangerous to your health, but also can leave dark stains on your teeth. Food and drinks like coffee, tea and some fruits can also cause discoloration. Learn more about tooth discolorations and measures your dentist can use to help you maintain a healthy and white smile.