Hammaspeikko

Hammaspeikko (Finnish for "tooth troll", from hammas "tooth" and peikko "troll") is a metaphorical device for explaining tooth decay (caries) to children. Eating candy lures tooth trolls, which drill holes into teeth and look scary. Brushing the teeth scares them away. It is not clear whether the tooth troll is a single entity, or if there are many. Similar spirits were believed to cause toothache in the old Finnish religion.

Hammaspeikko

Hammaspeikko (Finnish for "tooth troll", from hammas "tooth" and peikko "troll") is a metaphorical device for explaining tooth decay (caries) to children. Eating candy lures tooth trolls, which drill holes into teeth and look scary. Brushing the teeth scares them away. It is not clear whether the tooth troll is a single entity, or if there are many. Similar spirits were believed to cause toothache in the old Finnish religion.