South Carolina Code 40-15-82. Procedures prohibited from delegation to dental hygienists
(1) dental examinations, dental diagnoses, and dental treatment planning;
(2) cutting or performing surgical procedures on hard and soft tissues;
(3) performing restorative, prosthetic, and orthodontic procedures and other procedures that require professional education and skill of the dentist;
(4) performing any intra-oral procedure that would affect the function or efficiency of an appliance which, when worn by the patient, would come in direct contact with hard or soft tissue;
(5) placing and carving permanent type restorations in or on teeth;
(6) making impressions and jaw relation records, other than study casts and opposing casts, that will be issued for construction of dental appliances, other than bleaching trays;
(7) making any and all corrections of malformation of teeth or the jaws;
(8) making decisions concerning drugs and their dosages and writing prescriptions or work authorizations, except pursuant to standing orders;
(9) administering general anesthesia or nitrous oxide analgesia;
(10) administering local anesthesia other than under direct supervision.