**IMPORTANT** I have been getting comments about whether or not using liquid nails is safe. I don't know. If you're not comfortable using it, don't use it. I used it and I'm ok, but I very rarely wear them. I would not suggest wearing them frequently. Furthermore, The liquid nails worked alright at first, but I found the teeth would fall off after a bit. I'm still trying to find a way to adhere the teeth to the retainer successfully. I have tried hot glue and super glue, neither of which worked. I will update if I find a more successful adhesive. Thank you, take care, and be safe.
Said that they used hot glue to fill in the gap and then super glue to hold it in and it worked well. I havent tried that but it worked for them!
Here's a tutorial I whipped up on how to make fake teeth for cosplay I apologize if anything is spelled wrong or if I misused grammar, I didn't really proof read it enjoy!
I need some shark teeth and I'm considering using your method. I have a question, first off, since it has been a long time since you posted this, any chance you have found a better way to glue the nails to the retainer and just forgot to update? If not, I was wondering how long it took for the nails to start to fall off. Also, is the retainer uncomfortable, and do you talk funny with it? That was a lot of questions, sorry. But I really want to know everything before I try this.
If you make the retainer for you properly it shouldn't fall out or be uncomfortable. It may impair your speech a bit. You could try using epoxy (you HAVE to wait for it to FULLY cute though, epoxy is very toxic when hardening but once it's cured it's practically non toxic) you could really try any adhesive that's nontoxic. I haven't tried making more teeth since so I haven't tried other things. Some nails fell off immediately, some nails fell off a few months in and many didn't fall off at all *shrug* good luck making them!