Coffee & Tea: Coffee is full of chromogens, while tea contains both acid as well as tannins. According to Mark S. Wolff, professor at the New York University College of Dentistry, tea causes teeth to stain much worse than coffee, regardless of whether it’s brewed or iced.
Red Wine: Red wine is highly acidic and contains chromogens as well as tannins. While white wine does not have as much of an effect, it is still contains acid and tannins.
Food Dye: Rock candies paint your tongue, as well as your teeth, in vivid shades. Go easy on candy, artificially coloured fruit drinks and ice popsicles. Food dyes pose a higher danger to exposed roots than the tooth enamel itself.
Sodas: Dark sodas contain acid; their dark colour is infused by chromogens. Clear sodas like lemonade too, pose threats because of the proportion of acid that they contain. Acid consumption is a clear road to stained teeth.
Berries: Blackberries and raspberries too contain tannins. A good way to remember this is that anything that can stain your clothes can stain your teeth too!