I wanted to add to the list of great toothpastes commercially available my all time favorite.... Waleda Salt toothpaste. You don't put water on your brush when you start brushing, but it makes your mouth salivate naturally which is best for oral health. Here is the link to the Weleda New Zealand website if you can't find it in the store.
http://www.weleda.co.nz/products/2993.cfm
I have tried to use the other natural toothpastes since switching to the Salt paste and I can't stand them. They taste funny, the bubbles in my mouth feel really icky, and I don't feel like my mouth is clean. It is like there is some sort of residue left. yuck.