A person who holds a valid, unrevoked, and unsuspended license as a registered dental hygienist, registered dental hygienist in alternative practice, or registered dental hygienist in extended functions under this article may append the letters "R.D.H.," "R.D.H.A.P.," or "R.D.H.E.F.," respectively, to his or her name.
Ca. Bus. and Prof'l. Code § 1959