Answer: The pH ranges from 2.47-3.35 and our mouths about 6.2 to 7.0. At a PH of 5.2 to 5.5 or below the acid begins to dissolve the hard enamel of our teeth. Phosphoric and citric acids are found in soda
Answer: Wine stains teeth for the following reasons:
Red wine has a very intense chromogen, or color that is veryintense.
Wine, even white wine, is very acidic and can etch or dissolveteeth at the microscopic level, which makes teeth more likely toaccept pigment. That makes teeth more likely to get stained fromwhat you are eating along with the wine.
Wines contain tannins which will bind to teeth and tends tohold the chromogens, compounding the tendency to stain theteeth.