White wines can be bad for your teeth because their high acidity erodes tooth enamel far more than red wine, say German researchers.
They soaked adult teeth in white wine for a day and found the enamel surface lost the minerals calcium and phosphorus to depths of 60 micrometers -- a significant amount. Riesling wines, which have the lowest pH, had the greatest impact on tooth enamel, BBC News reported.
If you're a regular drinker of white wine, brushing your teeth after drinking does little good because years of constant exposure still takes a toll on teeth, said the researchers at Johannes Gutenberg University. However, eating cheese may help protect your teeth, the scientists said.
The study was published in the journal Nutrition Research.