Tooth Fairy in Japan

When children lose a baby-tooth in Japan, the custom is to throw the tooth either straight up in the air, or straight down at the floor depending on which tooth was lost. If it's a tooth from the roof of your mouth, you would throw it straight up. In reverse, the teeth lost from the bottom of your mouth would be thrown straight up into the air. The belief in Japan, and some other Asian countries, is by throwing the tooth straight up or straight down, the new adult-tooth that grows will follow and grow in straight. The children who toss their teeth also make a wish when throwing their teeth to have a mouse-tooth replace the tooth they just lost. Therefore, if you ever find a baby tooth on the ground while in Japan, it could be a child's wish for a new, straight-growing, tooth.