That left me with an option to try to find one online and order it, or sculpt one.
I chose the latter.
I also opted out from the normal monster sharp fangs, and went with more herbivore type of tooth. They look a bit more human, bringing slightly more disturbing overall look.
The slime is water gel.
I was slightly drunk when gluing the doors, so I had to compensate the crack with a skeletal hand :)
I prollu do hinges from greenstuff before painting, I don't know.