Perform clinical procedures within the scope of hygiene practice, including thorough and gentle prophylaxis, scaling, root planning and selective polishing when medically necessary, expose radiographs as prescribed by dentist, apply topical fluoride as appropriate. CHDC (Community Health and Dental Care, Inc.) is a quickly growing Community Health Center in Pennsylvania with locations in Pottstown, Barto, and Boyertown, providing care for all patients in our service area, regardless of insurance status or ability to pay.