The Certified Dental Assistant (CDA) credential from the Dental Assisting National Board (DANB) is the most widely recognized national certification for dental assistants in the United States. Established in 1948, DANB is the only nationally recognized certification body for dental assistants, and the CDA is accepted or required in 38+ states. This credential validates competency in general chairside assisting, radiation health and safety, and infection control — the three core areas every dental practice relies on.

Exam Structure

Three Component Exams: General Chairside Assisting (GC), Radiation Health and Safety (RHS), and Infection Control (ICE)
Total Questions: 245 multiple-choice questions
Total Time: 195 minutes (3 hours 15 minutes)
Test Window: 60 days from approval to complete all sections
Delivery: Computer-based at Pearson VUE test centers nationwide
Passing Score: Scaled score of 400+ on each component

Eligibility Pathways

Pathway I: Graduate of a CODA-accredited dental assisting or dental hygiene program + current CPR/BLS certification
Pathway II: High school diploma/GED + minimum 3,500 hours of work experience as a dental assistant + current CPR/BLS certification
Pathway III: Former DANB CDA holder, or graduate/enrollee in an accredited DDS/DMD program, or graduate of a dental degree program outside the U.S./Canada + current CPR/BLS

Preparation Resources

DALE Foundation (DANB's official education affiliate) — Review courses and practice tests specifically designed for CDA exam preparation
CDA Exam Prep Bundle: Complete package with all practice tests and review courses (~$200-300)
Practice Tests: Available for each component exam individually or bundled
SmarterDA: Third-party study platform with additional practice materials

Career Impact

CDA-certified dental assistants earn significantly more than non-certified peers. According to BLS data, dental assistants earn a median salary of $44,820/year, with certified assistants typically earning 10-20% more. The dental assisting field is projected to grow 7% through 2032 (faster than average), driven by an aging population needing more dental care and an expansion of dental insurance coverage. CDA certification is required or preferred by most dental practices and is a prerequisite for advanced DANB certifications including Certified Orthodontic Assistant (COA) and Certified Preventive Functions Dental Assistant (CPFDA).

Costs

CDA Exam (all 3 components): $450 ($425 for active military)
Individual Component Exams: $270 each if taken separately
Application Fee: $75
Annual Renewal: ~$60
Prep Program (typical): $1,000-$15,000 depending on program type (community college programs average $3,000-$6,000)
Total Investment: $1,500-$16,000 including training program and exam fees

Who It Is For

High school graduates interested in healthcare careers with a fast path to employment; career changers looking for stable, in-demand work; current dental assistants seeking higher pay and professional recognition; military members and veterans transitioning to civilian healthcare careers; and anyone wanting a stepping stone to dental hygiene or other advanced dental careers.

Danb certified dental assistant (cda) certification — national dental assisting credential

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