Registered Dental Assistant
RDA
rdaexam.com is your dedicated RDA practice site: 1,000+ exam-style practice questions, organized across all 4 exam domains. Start with the free practice test — no card required.
- practice questions
- 1,000+
- exam domains
- 4
- practice test
- Free
Exam at a glance
- Exam fee
- $150 non-refundable application fee including application, exam, and first annual fee; annual renewal fee for RDA is $75
- Questions on exam
- 210 total per the RDA content outline
- Duration
- 2.5 hours for Dental Assistant (chairside)
- Passing score
- Scaled 70 or greater on a 0-100 scale
- Retake policy
- Retake wait is 45 days and candidates may attempt a certification exam up to four times
- Validity
- Requires annual renewal fee and Certification Continuation Program documentation every 3 years; RDA requires 10 points per year and 30 total points in the 3-year CCP cycle
Published exam facts, from the official outline.
What’s on the RDA exam
- Office Assisting Skills (13.3%)
- Dental Sciences (33.3%)
- Clinical Procedures (29.0%)
- Dental Imaging (24.3%)
Official exam blueprint domains — your practice bank mirrors this outline.
The RDA question bank follows the official exam blueprint across 4 domains, so your practice mirrors the real outline — and shows you exactly where you’re weak. See the full blueprint on rdaexam.com →
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