Clean off the meat as mentioned. Then get your self some paint stirring stcks and bust them to size to put one horizontal across the jaw and another vertical to keep it open. You can whiten by using a small amount of peroxide. Bleach and boiling are no nos... The teeth are shucking farp! I like mine to get some sun during the drying but as mentioned when not around cover them good so the critters don't get at em. My buddy hung one off a tree limb hoping that would help but the next morn there was busted jaws blood and fur on the ground...
Flies are your friend and yes the maggots are disgusting but they make short work of what you miss...