Tooth erosion is the wearing away of tooth enamel (the tooth's outer covering) by chemicals. It is estimated to affect one in 15 Americans. Many dentists have suspected for some time that tooth erosion is on the rise. A 2008 study indicates that they may be right. The study looked at 900 middle school students in Indiana, Texas and California, aged 10-14. It found dental erosion in about 30% of these students.
The chief culprits are acidic drinks, with an assist from sugar.