"Scratched Teflon pans should be discarded"
Polytetrafluoroethylene is a very stable chemical substance. Metal particles from the scratched pan that reach the meal will pass through the digestive system without harming in any way then is being removed. It is unhealthy only if the Teflon is heated to over 260 degrees, for example if the pan is left empty on the hot stove. At that time also toxic fumes are released.