Toothache, Oil of Cloves Quick Relief for

"If the tooth has a cavity take a small piece of cotton and saturate with oil of cloves and place in tooth, or you may rub the gum with oil of sassafras." These are both good
remedies, and will often give relief almost instantly.

Source: Mother's Remedies: Over One Thousand Tried and Tested Remidies from Mothers of the United States and Canada, T. J. Ritter