"You've removed a microscopic layer of enamel that could have been replenished by the minerals in your saliva," he explained.
Saliva, it turns out, helps protect teeth from people's bad behavior by working to return the pH balance in the mouth to normal and restore minerals leached away by food acids, Hewlett said.
"There's this constant balance in the mouth, and saliva is there as our first line of defense," he said. "If someone has a good saliva flow, it can help repair some of the damage."
People who are worried about tooth erosion should talk about it with their dentist during one of the two visits a year they should be making to the dentist's office, Pierson said.
"That's where you get education from your dentist one-on-one," he said. "They examine your mouth and can ask specific questions based on what they find to address your specific problems."
The U.S. Centers for Disease Control and Prevention has more on water fluoridation.
SOURCES: Melvin Pierson, D.D.S., Sicklerville, N.J.; Dr. Edmund Hewlett, associate professor, restorative dentistry, School of Dentistry, University of California, Los Angeles; March 2008 Dental Tribune