The Iowa Mission of Mercy is a huge, free, two-day dental clinic that is held in a different city each year.
The annual event this year will be held in Davenport on October 5th and 6th.
The Mission of Mercy brings together more than 500 dental professional from all over the state.
Last year the effort treated just over 1300 Iowans for free.
The event moves around the state to provide dental care. In 2009 it was held at the Newton Speedway.
In the past four years it's also been held in Waterloo, Cedar Rapids and Sioux City.
Those seeking treatment can get cleanings, fillings, root canals and extractions at no cost.
Besides the event being first come, first serve, there are no other restrictions.
Since the program began in 2008, more than 6,000 people have received $3.2 million in free oral health care.