The State Board of Dentistry (hereinafter called the board) shall have the following powers and duties:
"Clinic, health center or charitable entity." A clinic, health center or charitable entity for which a licensee or certificate holder provides dental, hygiene or dental assisting services at no cost to patients.
"Volunteer dental, hygiene or dental assisting practice." Uncompensated time spent in the actual delivery of oral health care or in direct support of the delivery of oral health care. The term does not include time spent on administrative duties.
63 P.S. § 122