I had swollen gums and a slight tooth ache, so I put some castor oil in my mouth, and swished with it for about 15 minutes then spit it out, then brushed my teeth with toothpaste and baking soda (did this 2x a day). I noticed the pain slowly went away, and within 2-3 days, the pain wasn't there anymore! My teeth looked whiter too! The castor oil must've cleared up the infection (?)
Castor oil is the best oil ever. I personally have used it for an abscess in my teeth, more than once. I cured an infection in my jaw bone from the abscessed tooth. This was examined by a dentist who wanted to pull the tooth. I did not want the tooth pulled so I used castor oil on my gums and on the tooth. It cured the infection and took the pain away within an hour. I still have the tooth many years later.