What conditions must be met for a Registered Dental Hygienist (RDH) to perform duties of a Registered Dental Assistant (RDA)?

The condition that a Registered Dental Hygienist (RDH) must have received their license prior to December 31, 2005, is correct because this date signifies a regulatory point established by the Dental Board of California. Prior to this cutoff, RDHs were allowed to perform certain duties typically reserved for Registered Dental Assistants (RDAs) without needing to meet additional training requirements. This recognition stems from the acknowledgment of their education and training, which enables them to perform expanded duties in the dental setting.

This regulatory framework was put in place to ensure that there was clarity about the qualifications needed for RDHs to assume roles traditionally held by RDAs. After the cutoff date, the requirements for performing RDA duties became more strictly enforced, thus delineating the scope of practice more clearly.

In contrast to this, the other options do not correctly reflect the requirements for RDHs to perform RDA duties. Graduating from an accredited dental school is more relevant to becoming a dentist rather than impacting the duties laid out for hygienists and assistants. Completing an additional certification course could be viewed as an enhancement for those seeking to expand their skill set, but it is not a mandated requirement for RDHs who were licensed before the specified date. Lastly, stating that RD