In the US where 70% of water supplies are fluoridated and virtually 100% of the food supply is fluoridated:
Free dental clinic gives Iowans smiles: "The event was part of a nationwide movement called the Mission of Mercy, which puts on two-day free dental clinics. It started eight years ago in Virginia and has since expanded to seven other states. This is the first Iowa Mission of Mercy, but organizers plan to make it an annual event.
'There's a big demand out there for dental service, but a lot of people can't afford it,' Sager said."