Dental Assisting National Board Certified Dental Assistant (DANB CDA)

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The Dental Assisting National Board (DANB) Certified Dental Assistant (CDA) is the gold standard for dental assisting professionals in the United States. Earning this credential is a significant career milestone that validates a dental assistant’s knowledge, improves patient care, and often leads to higher salaries and more job opportunities. This definitive guide provides everything you need to know about the CDA certification process, from eligibility to exam day.

What is the Dental Assisting National Board Certified Dental Assistant (DANB CDA)?

The DANB CDA is a nationally recognized certification that demonstrates a dental assistant’s competency in performing chairside duties, radiation safety, and infection control.

  • Official Exam Name & Acronym: Certified Dental Assistant (CDA)
  • Conducting Body/Authority: The Dental Assisting National Board (DANB). Established in 1948, DANB is a non-profit organization and the national certifying board for dental assistants, accredited by the National Commission for Certifying Agencies (NCCA).
  • Purpose of Exam: Professional Certification and Licensure. While it is a voluntary certification, many states require passing specific components of the CDA exam (like RHS or ICE) to perform expanded functions or take X-rays.
  • Geographic Validity: Recognized across the United States. Currently, 39 states, the District of Columbia, and the U.S. Air Force recognize or require DANB certification for various dental assisting roles.
  • Level of Competence: Entry-level to Intermediate. Passing the CDA demonstrates that the candidate possesses the fundamental knowledge and skills necessary to practice safely and effectively in a dental office.
  • Brief History: Since its founding, DANB has issued over 450,000 certifications. The CDA has evolved from a paper-based test to a sophisticated Computer-Based Test (CBT) to reflect modern dental practices and digital radiography.

Who Can Take the Dental Assisting National Board Certified Dental Assistant (DANB CDA)? (Eligibility Requirements)

To earn the CDA credential, you must pass three component exams: Radiation Health and Safety (RHS), Infection Control (ICE), and General Chairside Assisting (GC). To sit for the GC component specifically, you must meet one of the following eligibility pathways.

Eligibility Pathways

  • Pathway 1: Graduation from a dental assisting or dental hygiene program accredited by the Commission on Dental Accreditation (CODA).
  • Pathway 2: High school diploma or equivalent AND a minimum of 3,500 hours of approved work experience as a dental assistant, completed over a period of 2 to 4 years.
  • Pathway 3: Former DANB CDA status, or graduation from a non-CODA-accredited dental assisting program, or an MD or DDS degree from a foreign dental school.

Documentation Checklist

  • Academic Transcripts: Required for Pathway 1 and 3 (must be official).
  • Employment Verification Form: Required for Pathway 2, signed by a licensed dentist.
  • CPR/AED Certification: Valid proof of current CPR, BLS, or ACLS certification from an approved provider (e.g., American Heart Association or American Red Cross).
  • ID Proof: A valid, government-issued photo ID with signature (e.g., Driver’s License or Passport).
  • Application Form: Completed online via the DANB website or via paper application.

Summary of Eligibility Requirements

Requirement Pathway 1 Pathway 2 Pathway 3
Education CODA-accredited program High School Diploma/GED Former CDA or Foreign Degree
Experience None (Graduation only) 3,500 hours (2-4 years) Varies
CPR Certification Required Required Required
Language English Proficiency English Proficiency English Proficiency

How to Register for the Dental Assisting National Board Certified Dental Assistant (DANB CDA)

Exam Schedule & Availability

The DANB CDA exams are available on-demand year-round. There are no fixed “exam seasons.” Once your application is approved, you receive a 60-day window to schedule and take your exam.

Exam Fees (Detailed Breakdown)

Fee Type Cost (USD)
Initial CDA Application (All 3 components) $450.00
Individual Component (GC, RHS, or ICE) $270.00 each
Retake Fee (per component) $270.00
Application Extension Fee $100.00
Rescheduling Fee (to Pearson VUE) $40.00 (approx.)
Cancellation Fee Partial refund only; $75 processing fee retained

Booking Process

  1. Create Account: Register on the DANB official website.
  2. Submit Application: Choose your pathway and upload required documents (transcripts, CPR card).
  3. Pay Fees: Payments are accepted via Credit Card (Visa, MC, Discover, Amex).
  4. Receive NTS: Once approved, you will receive a Notice to Schedule (NTS) via email.
  5. Schedule at Pearson VUE: Use your NTS to book a date and time at a local Pearson VUE testing center.

Retake Policy

If you fail a component, you must wait until you receive your official score report before reapplying. There is no mandatory waiting period (e.g., 30 days), but you must pay the full component fee again. You are allowed unlimited attempts, provided you meet the eligibility requirements for each application.

Score Validity

Once you pass a component (RHS, ICE, or GC), the score is valid for five years. You must pass all three components within this five-year window to earn the CDA certification. Once earned, the CDA does not expire as long as you meet annual renewal requirements.

Dental Assisting National Board Certified Dental Assistant (DANB CDA) Exam Format & Structure

Exam Format

The CDA consists of three separate exams taken via Computer-Based Testing (CBT) at a proctored Pearson VUE center. It is not currently available for remote/home proctoring.

Timing & Duration

Component Exam Questions Time Allotted
General Chairside (GC) 120 Questions 90 Minutes
Radiation Health & Safety (RHS) 100 Questions 75 Minutes
Infection Control (ICE) 100 Questions 75 Minutes

Syllabus & Content Domains

Domain Topics Covered Weightage (Approx)
GC: Collection/Recording Data Medical history, vitals, charting, radiographs 25%
GC: Chairside Procedures Four-handed dentistry, dental materials, lab procedures 40%
ICE: Patient Safety Sterilization, disinfection, cross-contamination 20%
RHS: Radiation Safety Patient/Operator protection, equipment monitoring 31%

How is the Dental Assisting National Board Certified Dental Assistant (DANB CDA) Scored?

DANB uses a scaled scoring system to ensure fairness across different versions of the exam.

  • The Passing Threshold: You must achieve a scaled score of 400. The scale ranges from 200 to 900.
  • Negative Marking: There is no penalty for wrong answers. It is in your best interest to answer every question.
  • Result Declaration: You will receive a preliminary “Pass” or “Fail” at the Pearson VUE center immediately after finishing. Official results are posted to your DANB account within 1-3 weeks.
  • Score Verification: You can request a manual score verification for a $50 fee, though because the exam is electronic, errors are extremely rare.

How Difficult is the Dental Assisting National Board Certified Dental Assistant (DANB CDA)?

The CDA is considered Challenging. It requires a mix of theoretical knowledge (microbiology, law) and practical clinical application.

Historical Pass Rates

Component Average Pass Rate
Radiation Health & Safety (RHS) 62% – 68%
Infection Control (ICE) 65% – 70%
General Chairside (GC) 58% – 64%

Most Challenging Topics: Candidates often struggle with Radiographic Mounting and Errors in the RHS exam and Microbiology/Chemical Disinfectant Classifications in the ICE exam.

DANB CDA vs. Similar Certifications: Which One is Right for You?

Feature DANB CDA State RDA (e.g., CA or TX) DANB COA
Conducting Body DANB State Dental Board DANB
Purpose National Certification State Licensure Orthodontic Specialty
Recognition National (39+ states) Single State National
Total Cost ~$450 $100 – $300 ~$450
Best Suited For Career-long professionals State-specific legal compliance Orthodontic assistants

How to Prepare for the Dental Assisting National Board Certified Dental Assistant (DANB CDA)

Recommended Study Timeline

  • Total Prep Time: 3 to 6 months.
  • Weekly Commitment: 10-15 hours.
  • Phase 1 (Month 1-2): Review core textbooks (e.g., Modern Dental Assisting by Bird & Robinson).
  • Phase 2 (Month 3): Focus on RHS and ICE domains. Use flashcards for microbiology and radiology terminology.
  • Phase 3 (Final 2 Weeks): Take timed practice exams to build stamina.

Best Study Resources

  • The DALE Foundation: The official affiliate of DANB, offering practice tests and review courses.
  • Mometrix CDA Study Guide: Highly rated for its “Secret Keys” and practice questions.
  • Mosby’s Dental Assisting Exam Review: Excellent for comprehensive content coverage.

What to Expect on Dental Assisting National Board Certified Dental Assistant (DANB CDA) Exam Day

  • Arrival: Arrive 30 minutes early at the Pearson VUE center.
  • Identification: Bring two forms of ID; one must be a government-issued photo ID with a signature.
  • Security: You will be required to store all personal items (phones, watches, bags) in a locker. Some centers perform palm vein scans or digital signatures.
  • Environment: The room is quiet and monitored by cameras. You will be provided with an on-screen calculator and a digital “whiteboard” for notes.

After Passing the Dental Assisting National Board Certified Dental Assistant (DANB CDA)

Passing the exam is just the beginning. To maintain your CDA credential, you must:

  1. Renew Annually: Submit a renewal fee to DANB every year.
  2. Continuing Education (CDE): Complete 12 CDE credits annually to stay current with dental advancements.
  3. Stay CPR Certified: Always maintain a valid CPR/BLS certification.

Career Impact: According to DANB’s 2020-2021 Salary Survey, CDAs earn a median of $22.00 per hour, compared to $18.50 for non-certified assistants. They also report higher job satisfaction and better employer-provided benefits.

Frequently Asked Questions about the Dental Assisting National Board Certified Dental Assistant (DANB CDA)

1. Can I take the exams separately?
Yes. You can take RHS, ICE, and GC on different days. You have five years to pass all three.

2. Is the CDA exam available in Spanish?
No, the exam is currently only administered in English.

3. What happens if my CPR card expires before the exam?
You will not be allowed to sit for the exam. Your CPR must be valid on the day of the test.

4. Can I get a refund if I decide not to take the test?
DANB provides a partial refund if requested before the NTS is used, minus a $75 processing fee.

5. Do I need a college degree to become a CDA?
No. Pathway 2 allows you to qualify with a high school diploma and sufficient work experience.

6. How long does the actual certification last?
The credential is valid for one year and must be renewed annually.

7. Are there any “trick” questions?
The questions are designed to be straightforward, but they often use clinical scenarios that require you to choose the “best” answer among several correct ones.

8. Is the exam multiple-choice?
Yes, the majority of questions are standard four-option multiple-choice.

9. Can I work in any state with a CDA?
While the CDA is national, you must still check with each state’s Board of Dentistry to ensure you meet their specific registration or licensing requirements.

10. What is the most common reason for failing?
Underestimating the Infection Control (ICE) section, particularly the specific CDC guidelines and chemical classifications.

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