An expanded function dental assistant shall perform under the direct supervision of a dentist. As used in this section, "direct supervision" means that a dentist is in the dental office or treatment facility, personally diagnoses the condition to be treated, personally authorizes the condition to be treated and remains in the dental office or treatment facility while the procedure is being performed by the expanded function dental assistant and, before dismissal of the patient, evaluates the work performed by the expanded function dental assistant. [2005, c. 322, §1 (NEW).]