On Saturday, March 9, area residents who have difficulty affording dental care will have an opportunity for a free visit to the dentist. Southland Smiles, 19815 Governors Highway in Flossmoor, in partnership with non-profit organization Dentistry from the Heart, will offer teeth cleanings, fillings and other treatments.This will be the seventh time Dr. Richard Mantoan and his staff have offered the program. Registration begins at 7:30 a.m. and Mantoan and his volunteers will see patients from 8 a.m. to 4 p.m. Patients will receive treatment on a first-come first-served basis . . .