I received a pair of these recently from Nightmare Factory. I got them for free by entering a giveaway from their twitter page. I was feeling antsy one night and decided that I wanted to have an extra festive Halloween avatar on Twitter. To do this, I wanted to use my fangs.
These come in a very appropos coffin holder. I like that a lot. It's very kitschy and spooky looking. The kit came with instructions and everything necessary to get the fangs to adhere to my teeth. Such materials necessary in the adhesion process were little capsules filled with powder and a vial of an unknown liquid. It felt like I was partaking in a mysterious experiment while preparing the temporary glue. Overall, that process was easy enough. When I began, I think I added too many drops of fluid and the preparation was too runny. It was supposed to be more of a wet paste. Once I let the mixture thicken a bit, it was perfect. I applied to the inner portion of each fang, everywhere my tooth would be. They stuck to my teeth firmly. When it was time to remove them, I just gently popped them off.
I recommend these for Halloween!