As many as 750 patients will receive free dental work and screenings for various health problems this weekend during a clinic being held at Gloucester High School.

Area residents who can’t afford dental care because they’re uninsured or underinsured can receive cleanings, x-rays, fillings, and extractions of visible teeth at no charge from 7 a.m. to 5 p.m. Saturday and 7 a.m. to noon Sunday on a first-come, first-served basis.

Since the lines will be long, Gloucester dentist Dr. Charles Harris, whose office is spearheading the effort, suggested that those attending bring snacks or lunches with them. They will also need a list of the medications they’re on, especially if they need to have teeth pulled. Prospective patients should park in Gloucester High School’s student parking lot and follow the signs to the designated entry.

Harris said that last year there was a lag time early Saturday morning, during which no patients were seen because everyone needed...