S.D. Codified Laws § 36-6A-43

Dental technicians may work either in commercial dental laboratories or under the supervision of a dentist. Technicians, when not working under the supervision of a dentist, may not provide for dental patients' use any prosthetic appliances, materials, or devices which are inserted in the human oral cavity unless ordered by a dentist. Technicians may not provide intra-oral services to patients. A technician or dental laboratory shall maintain a record of work orders for a period of two years.