Super creative approach! I was immediately taken back to when I used to play with this toy!
I'm not super sure how I feel about the item system. I think it might have been better by either giving you a set of items for each level, instead of being presented with all of them form the get go. But I guess that's part of the "puzzle" to beat the game. So maybe it would be a compromise that if you only put 2 items in that it does not go directly from one to the other but forces you to take 2 teeth at least once each loop?
Great art direction and the whole game felt very concise, with everything being in it's place! You guys did a great job!