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Primary-source answers about the DHBC RDH Laws and Ethics Written Examination and the DBC RDA Combined Written and Law and Ethics Examination — format, scoring, pathways, fees, and free practice paths. This topic page groups 4 focused answer pages, source pages, markdown mirrors, and query patterns for the same search-intent cluster.
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california-rdh-law-ethics-exam-facts
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.
california-rdh-free-practice-test
Dentovio's free California RDH Laws and Ethics practice test uses original, statute-cited questions spread across the official 2025 outline areas — consent and privacy (35%), professional practice standards (35%), and patient/professional obligations (30%). It contains no recalled or reconstructed exam items.
california-rda-combined-exam-facts
The Registered Dental Assistant Combined Written and Law and Ethics Examination is a single 125-item, 3-hour computer-based test at PSI centers (100 scored items plus 25 unscored pretest), scored pass/fail on a criterion-referenced standard — not a fixed 75%. In June 2026 the Dental Board reported a 72% overall pass rate, with the work-experience pathway at 62% and repeat testers at 38%.
california-rda-free-practice-test
Dentovio's free California RDA practice test uses original questions across all four official content areas — assessment and diagnostic records (15%), dental procedures (50%), infection control and safety (25%), and laws and regulations (10%) — keyed to the Dental Board's published outline, with no recalled exam items.
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