Maintaining good oral hygiene is an indispensable part of everyone's daily life, but sometimes traditions and superstitions in this respect, they are surprising, NOVA reported.
In a German legend from the Middle Ages, for example, it was supposed that kissing a donkey would relieve a toothache.
One can only assume that the purpose is to irritate the animal and it will show aggression leading to the extraction of the tooth.
This was thought to remove the source of the pain.