Crocodile and their teeth

We visited the crocodile farm recently and came back with a hard to get and unique souvenir, crocodile's tooth. Or teeth, because we got three of them. One for my eldest daughter, one for my husband and one for me. According to some old wives tales, there is a medicinal property in the tooth where if you have a toothache, you can get the crocodile tooth and grind it against a stone or something to get the powder. This powder, you can rub on your tooth ache and then, it is believe the pain will go away!!! Not sure if we will try that out, but we are keeping the teeth as souvenirs , a locket or a charm.. .