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Certified Restorative Functions Dental Assistant (CRFDA) Practice Test

55 questions available

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.

55 Practice Questions
55 minutes Practice Time
Start Practice
The bar to clear Scaled score (passing threshold varies by exam; set by DANB standard setting process) Official passing score. Aim higher in practice before you book.
Official objectives from DANB
DANB55 practice questionsBlueprint 1.0Bank updated 2026-06-21

Sample Questions

Try a few questions to see what the full exam is like.

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?

Why This Certification Opens Doors

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.

Exam Blueprint

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)

Study Resources

DANB Candidate Guide
DANBFree
Free candidate guides and content outlines available at danb.org
View
DANB Practice Tests
DANBFree
Official DANB practice tests available for purchase through the DANB portal
View

Frequently Asked Questions

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

The CRFDA exam focuses on functions that are legally delegated to qualified dental assistants under state law, which are not part of basic chairside assisting. These include: placing and removing rubber dams, selecting and placing matrix bands and wedges, placing and condensing amalgam and composite restorative materials, carving and finishing restorations, fabricating and cementing temporary crowns, and applying desensitizing agents. The exam also covers the legal parameters for performing these functions, including direct vs. indirect supervision requirements.

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

This practice test is meticulously mapped to the current DANB CRFDA exam blueprint, which is divided into four domains: Expanded Functions Legal and Ethical Standards (20%), Infection Control in Expanded Functions (15%), Patient Assessment and Management (25%), and Restorative Procedures and Materials (40%). Each question is tagged to a specific domain and cognitive level (recall, application, or analysis) to ensure comprehensive coverage. The difficulty and distribution of questions mirror the actual exam to provide an authentic preparatory experience.

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

The official DANB CRFDA exam requires a scaled score of 400 to pass, which typically translates to approximately 70-75% correct answers. This practice test helps you achieve that by providing detailed rationales for both correct and incorrect answers, allowing you to identify knowledge gaps. It also familiarizes you with the question style-including multiple-choice, scenario-based, and 'select all that apply' formats-reducing test-day anxiety and improving time management.

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

No. DANB requires candidates to have completed a CODA-accredited dental assisting program or have equivalent training, plus a minimum of 3,500 hours of clinical experience in expanded functions within the past five years. Additionally, you must hold current CPR certification. This practice test assumes you have this foundational experience and is designed to refine your knowledge, not to teach expanded functions from scratch. It is a review and assessment tool for experienced professionals.

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

The CRFDA certification is valid for one year and must be renewed annually through DANB. Recertification requires completing 12 continuing education (CE) credits in expanded functions-related topics, including infection control and legal/ethical standards. While this practice test is primarily for initial certification preparation, the content is aligned with current standards and can serve as a review tool for recertification candidates who need to refresh their knowledge of core competencies.