Patients wait to be seen during the Dentists Who Care for ME clinic, which provides free dental health care for patients in Maine who cannot afford it, at the Dunstan Dental Center in Scarborough on Friday. The dental center, which was one of multiple locations participating in the clinic, had treated more than 100 patients before 1 p.m. on Friday.

Patients wait to be seen during the Dentists Who Care for ME clinic, which provides free dental health care for patients in Maine who cannot afford it, at the Dunstan Dental Center in Scarborough on Friday. The dental center, which was one of multiple locations participating in the clinic, had treated more than 100 patients before 1 p.m. on Friday. Whitney Hayward/Staff Photographer Whitney Hayward/Staff Photographer

Dentists and dental assistants work on patients' teeth during the Dentists Who Care for ME clinic, which provides free dental health care for patients in Maine who cannot afford it, at the Dunstan Dental Center in Scarborough on Friday.

Dentists and dental assistants work on patients’ teeth during the Dentists Who Care for ME clinic, which provides free dental health care for patients in Maine who cannot afford it, at the Dunstan Dental Center in Scarborough on Friday. Whitney Hayward/Staff Photographer Whitney Hayward/Staff Photographer

Dentist Nichol Penna works on a patient's teeth during the Dentists Who Care for ME clinic, which provides free dental health care for patients in Maine who cannot afford it, at the Dunstan Dental Center in Scarborough on Friday.

Dentist Nichol Penna works on a patient’s teeth during the Dentists Who Care for ME clinic, which provides free dental health care for patients in Maine who cannot afford it, at the Dunstan Dental Center in Scarborough on Friday. Whitney Hayward/Staff Photographer zWhitney Hayward/Staff Photographer