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Dentovio public answer
The DHBC Registered Dental Hygienist (RDH) Laws and Ethics Written Examination has 60 multiple-choice items (50 scored plus 10 unscored pretest) in 90 minutes at PSI test centers, with a 75% minimum passing score under 16 CCR §1121(c). Every RDH licensure pathway — including out-of-state licensure by credential — requires it, and exam eligibility expires one year after approval.
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