Toof Fairy

Someone tell me if this has already been made into a horror movie. It sounds familiar. A friend suggested a story idea while we were goofing around, but it's one that's really stuck with me. The tooth fairy takes kids teeth because there's a bit of youth stuck to the tooth that the fairy can extract, ensuring it lives forever.

Is that a movie? It seems so simple that I figure someone else has to have thought of it. If not..DIBS! ;)