Chocolate

Chocolate, like coffee, tea, and red wine, contains tannins, the polyphenols that cause teeth to become brown. Polyphenol-rich foods leave thin coatings on surfaces, including the enamel of your teeth.

There will be extra sugar in chocolate unless you are eating 100 % pure dark chocolate. Excess sugar can damage your teeth' enamel and lead to the creation of plaque and cavities. In comparison to milk chocolate, dark chocolate often contains less sugar and milk solids. Dark chocolate is also more acidic than milk chocolate, which can erode away at tooth enamel.