The fourth annual Spreading Smiles event, comprised of offices in Vienna, Fairfax, Arlington, and The Plains, Va. will include local dentists providing services to local residents in need of free dental care on Sept. 17 at 2553 Chain Bridge Road. Doors are scheduled to open at 7:30 a.m. and the event will go all day, with no appointments necessary. All visits are on a first come, first serve basis.