As far as pain goes for a tooth ache, just gargle with a concentrated salt solution ** As Needed .** It will kill the bacteria that is causing the pain.
Add 1-2 Teaspoons or Tablespoons to a cup of water and rinse - gargle as needed 3-4+ times a day. This will kill the bacteria in few days but the pain will go down after the first day or less, just make sure to use enough salt and do it enough and you should be OK in a few days...
Use something other than table salt if possible. It's stronger and non toxic, refined natural white sea salt is best or pink salt, you can get both very easily on ebay or amazon. The Hawaiian sea salt I like best for this. Buy the coarse grain as it`s less expensive and will dissolve anyway.
No one can praise the power of good old warm salt water... It helps my toothaches almost instantly and was recommended to me by a respected Dentist. Worked for me again this morning :)"