If you drop a tooth into a glass of Coke, it would take as long to dissolve as it would take a glass of water to do the same thing.
Although it’s one of the more widespread and believed myths, that Coke dissolves teeth overnight, it just isn’t so.
The concentration of acid in Coke is so low that it would take a really long time for any effect to be seen.
Our teeth are protected by their enamel coating and saliva, which helps prevent the decay of teeth to an extent.