You need to refit or redo the mould in your fabulous scarecrow fangs! Don't Panic.. Here is the fitting kit alone without the tooth caps.
Note from The Littlest Costume Shop - I've used the original Scarecrow Fangs (still easily usable years after I originally fitted them). They were easy to fit and comfortable to use. There is a strong chemical smell when you're doing the mixing, which has long worn off the actual teeth now. The best fangs on the market!
As with all of these type of fangs, do not use over braces, crowns, plates, veneers or other dental work.