Probably can't get it in time, but with friendly plastic you can make a set of dentures with tusks. I've used the same set for 2 years and they're quite comfy. You can drink in them, but not eat.
I figure they are going to have to be in and out tusks. My plan has evolved to non toxic clay, metal reinforcements, a curing session, and polident. After that the plan is to use miniatures paint to detail the tusks, and waterproof the pieces a bit.