Arthur Tricks the tooth fairy

I had not ever heard about the tooth fairy in Japan, so I was very interested in this story before I read it. The characters of this story are Arthur and his younger sister, D.W.
One day, Arthur was got a dollar from the tooth fairy, because his tooth came out and he put it under his pillow. D.W. who heard them is envy and she tries to pull out her tooth by force, but she was not able to pull out it. Moreover she has a toothache, so she goes to the dentist on our way to go to the museum with Arthur and her mother. But her tooth was in good health. Then she goes to the museum and buys a shark’s tooth there. She frames to put it under her pillow and says Arthur about this thing. But Arthur knows the tooth fairy do not leave a dollar in a shark’s tooth. So he put a dollar under D.W.’s pillow in exchange for a shark’s tooth while she was sleeping. D.W. was surprised them when she got up. She ran into Arthur’s room and reported him. Then she decides to put a shark’s tooth under her pillow again. So Arthur laughs at her proposal.
I thought I want to know the sequel to this story. By the way, they put their tooth under their pillow after their tooth came out. But I throw my tooth which came out into a roof of my house. So I was able to know a way to dispose of teeth which came out varies from country to country. This story was very interesting for me.
(274 words)