RDA Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the RDA Vocabulary Game
A free word game for the RDA exam. Each round shows a clue for one of 44 exam terms across 4 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
Topics in the RDA Vocabulary Game
Assessment and Diagnostic Records
Dental Procedures
Infection Control and Safety
Laws and Regulations
Sources for these terms (29)
- Dental Board of California — Registered Dental Assistant Combined Written and Law and Ethics Examination Outline (2023) · Source checked 2026-11-02
- Dental Board of California — Table of Dental Auxiliary Duties Delegable by Supervising Dentist (Eff. 1/1/2025) · Source checked 2026-11-02
- Dental Board of California — Title 16 CCR Section 1005 Minimum Standards for Infection Control · Source checked 2026-11-02
- Dental Board of California — Dental Materials Fact Sheet (The Facts About Fillings) · Source checked 2026-11-02
- Dental Board of California — Title 16 CCR Sections 1070–1071 Dental Assisting Educational Programs and Courses · Source checked 2026-11-02
- Dental Board of California — Title 16 CCR Sections 1016, 1016.2, and 1017 Continuing Education Regulations · Source checked 2026-11-02
- Dental Board of California — Dental Assistant Continuing Education · Source checked 2026-11-02
- Dental Board of California — Become a Licensed Registered Dental Assistant · Source checked 2026-11-02
- Dental Board of California — Instructions for Completing the Coronal Polishing Course Application · Source checked 2026-11-02
- Dental Board of California — Instructions for Completing the Pit and Fissure Sealant Course Application · Source checked 2026-11-02
- Dental Board of California — Instructions for Completing the Ultrasonic Scaling Course Application · Source checked 2026-11-02
- Cal/OSHA — Title 8 CCR Section 5193 Bloodborne Pathogens · Source checked 2026-11-02
- CDC — Dental Unit Water Quality · Source checked 2026-11-02
- U.S. Food and Drug Administration — Dental Cone-Beam Computed Tomography · Source checked 2026-11-02
- U.S. Food and Drug Administration — Dental Amalgam Fillings · Source checked 2026-11-02
- American Dental Association — X-Rays / Radiographs · Source checked 2026-11-02
- American Dental Association — Dental Sealants · Source checked 2026-11-02
- American Dental Association — Whitening · Source checked 2026-11-02
- American Dental Association — Dental Curing Lights · Source checked 2026-11-02
- American Dental Association — Materials for Direct Restorations · Source checked 2026-11-02
- American Dental Association — Latex Allergy · Source checked 2026-11-02
- American Dental Association — Dental Erosion · Source checked 2026-11-02
- American Dental Association — Nitrous Oxide · Source checked 2026-11-02
- American Dental Association — Dental Floss / Interdental Cleaners · Source checked 2026-11-02
- MedlinePlus Medical Encyclopedia — Tooth Anatomy · Source checked 2026-11-02
- MedlinePlus Medical Encyclopedia — Dental Crowns · Source checked 2026-11-02
- MedlinePlus Medical Encyclopedia — Dry Socket · Source checked 2026-11-02
- National Institute of Dental and Craniofacial Research — Tooth Decay · Source checked 2026-11-02
- National Institute of Dental and Craniofacial Research — Periodontal (Gum) Disease · Source checked 2026-11-02
About the RDA Exam
The California RDA Combined Written and Law and Ethics Examination validates registered dental assistant competence in assessment and diagnostic records, dental procedures, infection control and health/safety, and laws and regulations. The current Dental Board/OPES update reduced the exam to 100 scored items plus 25 pretest items while retaining the 3-hour testing time.
Exam sponsor: Dental Board of California / PSI Services. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
125 questions
Time Limit
3 hours
Passing Score
Criterion-referenced pass/fail standard
Reported exam pass rate: See monthly school statistics. The Dental Board publishes monthly RDA written examination statistics by approved school; the applicant page does not list one statewide annual pass rate. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the RDA vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the RDA vocabulary game work?
Each round shows a clue for one of 44 RDA terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the RDA terms come from?
OpenExamPrep researched each term from the Dental Board of California / PSI Services content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
What is the RDA certification?
RDA (Registered Dental Assistant) is a California credential required to perform expanded duties as a dental assistant. It validates competency in dental procedures, infection control, patient assessment, and dental law compliance.
How many questions are on the RDA exam?
The current California RDA combined written and law/ethics exam has 125 total multiple-choice items: 100 scored items and 25 pretest items. You have 3 hours to complete the exam. It is administered by PSI after the Dental Board approves your RDA examination and licensure application.