This is a SLIDING SCALE clinic. The costs for clinic services are based on either your income or they offer type of financial assistance. Contact the clinic directly to discuss prices for individual services which vary. Sliding Scale does not necessarily mean free. The clinic treats adults and children. A sliding fee schedule is used for payment based on income. They offer a full range of general dentistry for both adults and children, including screenings, cleanings, sealants, fillings, extractions, crowns and bridges, retainers, and other preventive and restorative care. Hours of Operation: Monday to Saturday: 8:00 am - 6:30 pm Mary's Center also operates a Dental Cruiser, which provides mobile pediatric dental services at four middle schools in Prince George's County, Maryland.