According to medical historian Dr. Lindsey Fitzharris, tooth worms were a legitimate concern in dental medicine as far back as 5,000 BCE, where they were first mentioned in a Sumerian medical text. By the 8th century CE, the idea of worms causing tooth decay had reached Europe. As they describe it:
Treatment of tooth worms varied depending on the severity of the patient’s pain. Often, practitioners would try to ‘smoke’ the worm out by heating a mixture of beeswax and henbane seed on a piece of iron and directing the fumes into the cavity with a funnel. Afterwards, the hole was filled with powered henbane seed and gum mastic. This may have provided temporary relief given the fact that henbane is a mild narcotic. Many times, though, the achy tooth had to be removed altogether. Some tooth-pullers mistook nerves for tooth worms, and extracted both the tooth and the nerve in what was certainly an extremely painful procedure in a period before anaesthetics. – Fitzharris
In this unattributed 18th century ivory carving which stands at 4″ tall, demons can be seen wrestling with the tooth worm amid swirling hellfire, next to figures beating and clubbing the souls of the damned in eternal pain. Anyone who has ever suffered an extended toothache can sympathize with the hellish torment depicted here.
Many medical spells for toothache can be found throughout history. One spell found in the Cambridge Book of Magic (1530’s), the cunning man is instructed to “write on bread or in an apple or in cheese: ‘Loy: Gloy: and Zedoloy’, and say an Our Father, Hail Mary and Creed.” In Carmichael’s Carmina Gadelica (1900), there is listed a folk spell from Scotland where toothache sufferers would drink water from a magic well called Cuidh-airidh. A number of spells from Germany involved magically transferring the toothache somewhere else, especially with a coffin nail. The sufferer would ask a grave-differ for a coffin nail, poke it into his gums, then drive the nail into the ground a crossroads, or into a door, taking the toothache with it.
One time I myself had a terrible wisdom toothache (and no dental insurance!), so I ate a single psilocybin mushroom, and then earnestly begged the spirit of the mushroom to heal me of the pain. For what it’s worth, the pain did go away until I had to have my wisdom teeth finally pulled. Experience has shown me that magic is never a proper substitute for good medicine.
The Book of Faustus 