that's the press completely misunderstading the scientific data
I'd suggest reading the original paper.

that "citric acid" statement is based on pH, not the power to erode enamel. If you notice, they point out that cola removes about 5% of enamel wheras other drinks were closer to 1.5%

ie, less erosive. Shit journalism. Citric acid may well have a lower pH than phosphoric acid. That makes fuck all difference to what happens to calcium salts (the most important bit of enamel) upon exposure.

Give I use phosphoric acid to strip limescale (calcium salt) from the inside of stainless steel fermenters, I think it's probably more harmful to teeth than a bit of orange juice, really.
( the mighty badger Aphrodite, on a bar stool, by your side, Tue 19 May 2009, 14:17, archived)