Ozone kills bacteria as well as other pathogens very effectively. And it can get places where drugs cannot go. For instance I have seen it work wonders on brain tumors. As far as my tooth goes the jaw was really swollen bad, and I was getting chronic headaches. When I started the ozone the pain and swelling went down as the ozone killed the bacteria and helped speed up the healing process. That was several months ago and I have not had any problems since.
If you really want to learn about ozone I suggest starting with the book The Use of Ozone in Medicine 2nd ed. The book was written by doctors for doctors. It gives a lot of detailed medical information on ozone including methods of application and dosing.