Business and Professions Code section 1909

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.

Source: Section 1909, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=BPC§ionNum=1909.­ (updated Jan. 1, 2020; accessed Jun. 25, 2025).

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Verified:
Jun. 25, 2025

§ 1909's source at ca​.gov