Another thing not widely known is that DMSO is one of the few molecules that will penetrate through a tooth to the root. Since there is so little blood flow to the root, it is very had to kill infection with oral antibiotic.

But you can take some Chlorine Dioxide, I used around 6 drops in 60 ml of water, then poor in some dmso, take some gauze dipped in solution and put in on the tooth gum, let it soak in, and it will kill the infection in the tooth root.