The golden teeth are teeth you can obtain by using tickets that you win in the game. During the Easter egg in Zombies in Spaceland you must make the dinosaurs mouth go down onto a brutes head. In doing this you will disable the trap and then you are able to go to the arcade to buy the teeth. As many other Easter eggs in Call of Duty Zombies games it doesn't say hold X or square to place something, this also is done in the Projection room on the table there are pieces you can and through the portal. The best weapons for the boss fight are the discord and shredder. Altogether the teeth are used as a part for the Easter egg.