I have a monster in mind, but a major part of its introduction to the story is that I want to have it bite a human soldier's skull clean off. Its teeth are similar in structure to a Placoderm's, but are made of pure aluminum metal. The monster is roughly the size of a human, but is able to overpower a human.
I don't care about armored humans, the unlucky soldier had his helmet fall off while the monster took him down. However, I want the skull to be so highly damaged by the bite the part of the skull in the monster's mouth is either totally cut off from the rest of the skull (IE the person's body falls immediately after the bite), or requires little to no actual force to rip off (Like those little plastic things in frames some games have)
Could Aluminum Teeth like a Placoderm's bite a Human's Skull so as to completely detach to skull?