From The Long Lost Friend:
Hohman, the author of this book, has cured the severest toothache more than sixty times, with this remedy. and, out of the sixty times he applied it, it failed but once in affecting a cure. Take blue vitriol and put a piece of it in the hollow tooth, yet not too much; spit out the water that collects in the mouth, and be careful to swallow none. I do not know whether it is good for teeth that are not hollow, but I should judge it would cure any kind of toothache.
The grimoire The Long Lost Friend lists this spell.
Timeline of related events
1820Publication of Hohmann's Long Lost Friend (lists this spell)