A registered dental hygienist is authorized to perform the following procedures under direct supervision of a licensed dentist, after submitting to the dental hygiene board evidence of satisfactory completion of a course of instruction, approved by the dental hygiene board, in the procedures:
(a) Soft-tissue curettage.
(b) Administration of local anesthesia.
(c) Administration of nitrous oxide and oxygen, whether administered alone or in combination with each other.
(Amended by Stats. 2019, Ch. 456, Sec. 12. (SB 786) Effective January 1, 2020.)