I am wondering the same thing - I have all the teeth, is that the payoff? I didn't notice a rep boost after all completed (would have expected something like toontown fish or flower rewards after getting the whole treasure). Do you eventually turn these in to Jack, or is the quest just to have them sitting in your inventory? Same question on the 9 rogues, as I have had all of them for quite some time now. I went back to visit Elizabeth, and she didn't seem impressed.
Rose Cannonskull / Cool Sparklescreech