Cal. Bus. & Prof. Code § 1752.1
(a) The board may license as a registered dental assistant a person who files an application, pays the applicable fee, and submits written evidence, satisfactory to the board, of one of the following eligibility requirements:
(4) Completion of an alternative dental assisting program as defined in subdivision (a) of Section 1741 that includes all the following:
(5) Completion of a preceptorship in dental assisting that includes all the following:
(B) At least 300 hours documented on a form furnished by the board of coursework in dental assisting-related topics, inclusive of the education required in subdivision (c), which may be obtained concurrent to the work experience and satisfies all the following:
(c) In addition to the requirements specified in subdivision (a), individuals applying for registered dental assistant licensure shall provide written evidence of successful completion of all of the following:
(1) Within two years before the date of the application received by the board:
(2) Within five years before the date of the application received by the board:
(d) Notwithstanding subdivisions (a) to (c), inclusive, individuals with current and active California licensure as a registered dental hygienist, registered dental hygienist in alternative practice, or registered dental hygienist in extended functions whose initial license was issued on or after January 1, 2006, applying for licensure as a registered dental assistant shall comply with this subdivision and satisfy all of the following: