Hi Sydney,
Here are a couple of websites that may be useful to you:

http://www.dentist.net/sls-free-toothpaste.asp

http://www.remediesdirect.com/organic-toothpaste.html


This website explains <without any reason for bias> what SLS is:

http://en.wikipedia.org/wiki/Sodium_laureth_sulfate


Is your dentist giving you injections of ozone in your mouth? Does he numb the area first before the injection?

Bryanna