Great article.

The fact that teeth could heal themselves was unknown to me for quite some time. I thought that if you had a cavity, you had to have it filled.

I used to have horrid teeth (and the diet to match). I stopped drinking soda and my dentist recommended a product called Recaldent (http://en.wikipedia.org/wiki/Recaldent). This concentrated paste helped most of my teeth strengthen and recalcify.