Black Hearts Under Black Flags
Unlike the Wyverntooth Peaks to the west, the Teeth have no dwarven inhabitants, as the range is spread comparatively thin. Passes between the mountains, though winding, are generally wide with even footing, and all manner of armies marching north and orcish hordes raiding south traverse them without much risk.
Because Al’Hasin and Khadera border the mountains, both nations maintain vigilant watch for incoming raiders from the Savage March. It is less common for the armies of the Old Kingdoms to cross the Teeth, but they do send the occasional war host north to disperse an Orcish horde or Barbarian tribe that grows too large and too militant for comfort.