Certified Restorative Functions Dental Assistant (CRFDA) Practice Test

55 questions available

Build your confidence for Certified Restorative Functions Dental Assistant (CRFDA). Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.

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55 Practice questions
55 minutes Practice Time
Try 5 free questions
No account needed. A free account includes 20 questions for this exam.
The bar to clear Scaled score (passing threshold varies by exam; set by DANB standard setting process) Published passing score for this certification.
Official objectives from DANB
DANB55 practice questionsBank updated 2026-06-09
Blueprint verifiedChecked against DANB official objectivesMetadata verified 2026-09-02How we verify

Exam overview and details

The Certified Restorative Functions Dental Assistant (CRFDA) Practice Test is a comprehensive assessment tool designed for dental assistants seeking to validate their advanced clinical competencies in restorative procedures. This practice exam rigorously covers the four core domains of the official CRFDA certification blueprint: Expanded Functions Legal and Ethical Standards, Infection Control in Expanded Functions, Patient Assessment and Management, and Restorative Procedures and Materials. By simulating the actual certification exam environment, this test evaluates a candidate's ability to apply state-specific regulations, maintain aseptic techniques during intraoral procedures, assess patient needs, and execute restorative tasks such as matrix placement, amalgam and composite finishing, and temporary restoration fabrication. Achieving CRFDA certification signifies a dental assistant's mastery of expanded functions beyond basic chairside duties, directly enhancing practice efficiency and patient care quality. For employers, this credential distinguishes assistants who can legally and safely perform complex restorative tasks under supervision, reducing doctor workload and increasing practice revenue. For the assistant, it opens doors to higher salary brackets, leadership roles, and specialized career paths in general and pediatric dentistry. This practice test is an essential step in preparing for the official DANB (Dental Assisting National Board) CRFDA exam, ensuring candidates are familiar with question formats, time constraints, and the depth of knowledge required to pass on the first attempt.

Sample Questions

Choose an answer and explore the explanation to see how practice works.

Restorative Procedures and Materials

A recently placed MOD amalgam on tooth #19 fractures at the mesial marginal ridge two days after the patient began chewing on that side. Which procedural error during placement is the most likely contributing factor?

Restorative Procedures and Materials

A 29-year-old patient is receiving a Class II composite restoration on tooth #30. The preparation is 4 mm deep in the proximal box. The dental assistant is assisting with placement. What is the maximum recommended increment thickness for light-cured composite in this situation?

Restorative Procedures and Materials

The restorative functions assistant is assisting with a Class II composite on tooth #29. After placing the sectional matrix and wedge, the assistant must apply a desensitizing agent before the etch-and-bond sequence because the preparation is moderately deep. Which agent application is consistent with current Procedures guidelines?

Isolation

A 41-year-old patient reports a known latex allergy during the health history review before a Class II amalgam on tooth #29. The dental assistant is preparing isolation. Which isolation approach satisfies both patient safety and Isolation domain standards?

Infection Prevention and Control

The restorative functions assistant is preparing to dismiss a patient after placement of a large Class II amalgam on tooth #19. The dentist has already checked occlusion with articulating paper. What final Infection Prevention and Control step must the assistant perform with the amalgam waste before the patient leaves the operatory?

Career Opportunities & Salary

Median salary: $48,070– Dental Assistants

Source: BLS Occupational Employment and Wage Statistics, May 2025 -- Dental Assistants (SOC 31-9091), US national. Occupation median, not a certification salary. (2025)

Dental Assistants

Exam insights and study advice

In the competitive landscape of dental healthcare, the CRFDA certification is the industry-recognized gold standard for dental assistants performing expanded restorative functions. This credential directly translates to career advancement by qualifying you for roles that command 15-30% higher wages than non-certified assistants. It demonstrates to state dental boards and employers that you possess the critical knowledge to perform irreversible procedures-such as placing and finishing restorations-with the same precision and safety standards as a licensed dentist. Achieving this certification not only validates your technical skills but also signals your commitment to professional excellence, making you an indispensable asset in any restorative-focused practice. It is a strategic investment in your career trajectory, providing portable, nationally recognized proof of your expertise.

These are the backgrounds the certifying body suggests. Check the vendor's own page for anything it formally requires.

What this exam covers

01Expanded Functions Legal and Ethical Standards

02Infection Control in Expanded Functions

03Patient Assessment and Management

04Restorative Procedures and Materials

Exam Details CRFDA | $170 USD

Exam Code CRFDA
Vendor DANB
Exam Cost $170 USD
Passing Score Scaled score (passing threshold varies by exam; set by DANB standard setting process)
Question TypesMultiple Choice
Retake Policy 90-day waiting period between failed attempts. No stated limit on total attempts. Each retake requires a new exam registration fee.
Exam Format Linear (fixed-form, computer-based)
Exam rules Closed book; no reference materials or calculators permitted. All DANB exams are administered at Pearson VUE test centers. Candidate must present valid government-issued photo ID. Personal items must be stored in a locker during the exam.

Frequently Asked Questions

What specific expanded functions are covered in the CRFDA exam that differ from basic dental assisting?

How does the CRFDA practice test align with the official DANB exam blueprint?

What is the passing score for the official CRFDA exam, and how can this practice test help me achieve it?

Can I take the CRFDA exam without prior expanded functions training or experience?

How often should I update my CRFDA certification, and does this practice test cover recertification requirements?