Effects of phosphates in acid-containing beverages on tooth erosion.

Rat studies demonstrated that low-pH powdered beverage mixes containing monocalcium phosphate caused less molar erosion than reconstituted frozen orange juice and grape juice when these beverages were consumed at excessive levels. A number of sodium phosphate supplements in low-pH beverages were not as effective as monocalcium phosphate in preventing molar erosion. Total acidity or pH values of the beverages could not be used with reliability to predict their potential to cause molar erosion.