NBDE Practice Test

NBDE Practice Test : Free Exam Questions & Study Guide

Passing the National Board Dental Exam (NBDE) is the final hurdle between dental school and your professional career. Whether you are preparing for the legacy NBDE Part 1 and NBDE Part 2 components or the modern Integrated National Board Dental Examination (INBDE), comprehensive preparation is essential for licensure.

Our free NBDE practice test suite offers realistic questions covering dental anatomy, pharmacology, pathology, and patient management. Use our NBDE study material to identify weak areas, master key concepts, and approach your dental NBDE examination with confidence.

⏱️

12h

+Time Limit

📝

500

Questions

✅

85%

Pass Rate

💵

$800+

Exam Fee

📊

P/F

Scoring

🖥️

CBT

Format

🔄

Yes

Retakes

🏢

Center

Prometric

📍

Based

🩺

Req

Licensure

💻

Computer

🎓

DDS

Degree

Working with an NBDE tutor or using high-quality NBDE study material can significantly improve your chances of passing. While the examination format has evolved, the core knowledge required for the NBDE exam remains consistent across all dental board assessments.

Free NBDE Exam Questions

Our updated NBDE practice test modules cover essential topics from both legacy parts and the new integrated format. Select a quiz below to begin your NBDE preparation.

NBDE Certification Test

Free NBDE practice test covering general dental knowledge and core sciences. Master essential concepts with this NBDE answers key for your board exam.

NBDE Part 2 Questions

NBDE Part 2 practice questions focusing on clinical dentistry and patient management. Improve your score on the National Board Dental Exam with targeted review.

NBDE Part 1 Practice

NBDE Part 1 sample questions covering anatomical sciences and microbiology. Essential NBDE exam review for foundational biomedical science topics.

NBDE Exam Part 2

NBDE exam test questions for advanced clinical problem solving. Prepare for your dental NBDE licensure with comprehensive pharmacology and pathology scenarios.

Dental NBDE Ultimate

Dental NBDE practice questions covering all major board domains. The ultimate NBDE preparation tool with detailed explanations for difficult cases.

NBDE Knowledge Quiz

NBDE knowledge check featuring high-yield concepts and definitions. Boost your NBDE study material review with quick-fire board prep questions.

FREE NBDE PRACTICE TEST

NBDE Flashcards

Quick review for dental anatomy and pathology concepts.

📚 🦷What is the most common cause of pulpitis?

Bacterial infection from dental caries is the most common cause of pulpitis.

🎯 🦠Which bacteria is primarily associated with aggressive periodontitis?

Aggregatibacter actinomycetemcomitans is the primary bacteria in aggressive periodontitis.

💡 💊What is the mechanism of action of local anesthetics?

They block sodium channels to prevent depolarization and nerve impulse transmission.

🔑 🦴Which muscle is responsible for opening the mouth?

The lateral pterygoid muscle is primarily responsible for opening the mouth (depression of mandible).

📝 🧬What is the hardest tissue in the human body?

Dental enamel is the hardest and most highly mineralized substance in the human body.

⭐ 🧪What is the primary function of fluoride in dentistry?

Fluoride promotes remineralization and inhibits demineralization of tooth enamel.

NBDE EXAM QUESTIONS QUIZ

NBDE Exam Study Guide

Our comprehensive NBDE study material breaks down everything you need to know about the NBDE exam and the transition to INBDE. Whether you are searching for ADA NBDE guidelines or NBDE Part 1 historical context, this guide covers it all.

ℹ️ NBDE Basics

What is the NBDE exam?: The National Board Dental Examination (NBDE) was a two-part licensure test for dentists. It has largely been replaced by the Integrated National Board Dental Examination (INBDE), which combines content from NBDE Part 1 and NBDE Part 2 into one comprehensive exam.
Who takes the NBDE exam?: Dental students and graduates from accredited dental schools in the US and Canada, as well as international dentists seeking licensure in the United States, must take the NBDE exam (now INBDE).
What is the difference between NBDE and INBDE?: The NBDE exam was split into two parts: Part 1 (Basic Sciences) and Part 2 (Clinical Sciences). The INBDE integrates these topics into a single examination to better reflect modern dental practice.
Is the NBDE practice test still relevant?: Yes, taking an NBDE practice test is highly recommended. The foundational knowledge tested in NBDE Part 1 and NBDE Part 2 is identical to the content on the new INBDE, making legacy practice materials very valuable.

📄 NBDE Format

How many questions are on the NBDE exam?: The legacy NBDE Part 1 had 400 questions and NBDE Part 2 had 500 questions. The new INBDE consists of 500 questions administered over one and a half days.
What subjects are covered in the dental NBDE?: The dental NBDE covers anatomic sciences, biochemistry, physiology, microbiology, pathology, dental anatomy, occlusion, operative dentistry, pharmacology, prosthodontics, and oral surgery.
How long is the NBDE exam?: The modern integrated NBDE exam (INBDE) takes approximately 12 hours and 30 minutes over two days, including tutorials and scheduled breaks.
Is the NBDE exam computer-based?: Yes, the NBDE exam is a computer-based test (CBT) administered at Prometric testing centers throughout the United States and its territories.

📝 NBDE Registration

How do I register for the NBDE exam?: To register for the NBDE exam, you must obtain a DENTPIN from the ADA, apply through the Joint Commission on National Dental Examinations (JCNDE), and schedule your appointment with Prometric.
What are the NBDE exam fees?: NBDE exam fees are typically around $845 for the INBDE. Fees are subject to change, so check the official ADA NBDE website for the most current pricing.
Where can I find NBDE exam dates?: NBDE exam dates are available year-round. You can schedule your test appointment through Prometric based on seat availability at your chosen testing center.
Can international students take the NBDE?: Yes, graduates of non-accredited dental schools can take the NBDE exam after their educational credentials have been verified by ECE or WES.

📊 NBDE Results

What is the passing score for the NBDE?: The NBDE exam uses a pass/fail system. A scaled score of 75 or higher is required to pass. No numerical score is reported to candidates who pass.
When will I get my NBDE results?: NBDE results are typically released 2-4 weeks after the examination date. You will receive an email notification when your scores are available in your MyNBDE account.
What is the NBDE pass rate?: The NBDE pass rate for first-time candidates from accredited dental schools is consistently high, typically ranging between 85% and 95% depending on the year.
Can I retake the NBDE exam?: Yes, if you fail the NBDE exam, you must wait 90 days before retaking it. You are limited to five attempts for each examination.

💡 NBDE Tips

What is the best NBDE preparation strategy?: Effective NBDE preparation involves a mix of reviewing comprehensive study guides, utilizing NBDE flashcards for recall, and taking multiple full-length practice tests.
How helpful is an NBDE tutor?: Working with an NBDE tutor can be extremely beneficial, especially for identifying weak areas in clinical application or basic sciences that self-study might miss.
Should I use NBDE Part 1 materials for INBDE?: Yes, NBDE Part 1 study materials cover the essential biomedical sciences that make up a significant portion of the INBDE foundation knowledge domain.
Are NBDE flashcards useful?: NBDE flashcards are excellent for memorizing pharmacology drugs, pathology conditions, and dental anatomy details, which are high-yield topics on the exam.

National Board Dental Exam Format

The transition from separate NBDE Part 1 and NBDE Part 2 exams to the INBDE has unified the testing process. However, understanding the core components remains vital for NBDE preparation.

🔴 🔬Biomedical Sciences / Foundation

Covers topics formerly in NBDE Part 1 including anatomy and physiology.

AnatomyBiochemistryPhysiologyMicrobiology

Topics: Head & neck anatomy, general pathology, immunology.
Questions: Integrated into clinical scenarios.

🟠 🦷Clinical Dentistry / Core

Includes operative dentistry and prosthodontics from NBDE Part 2.

OperativeFixedProsthRemovable

Topics: Restoration, occlusion, biomaterials.
Questions: Case-based clinical judgment.

🟡 💊Pharmacology / Critical

Essential drug interactions and management found in NBDE exam questions.

AnalgesicsAntibioticsAnestheticsInteractions

Topics: Mechanism of action, dosage, side effects.
Questions: Patient safety focus.

🟢 🦠Pathology & Radiology / Diagnosis

Diagnostic skills testing oral pathology and radiographic interpretation.

OralPathRadiologyDiagnosisLesions

Topics: Differential diagnosis, imaging techniques.
Questions: Image-based identification.

🔵 🏥Patient Management / Practice

Behavioral science, ethics, and practice management concepts.

EthicsBehavioralPublicHealth

Topics: Professionalism, anxiety management, infection control.
Questions: Situational judgment.

🟣 👶Specialty Areas / Advanced

Pediatric dentistry, orthodontics, and periodontics content.

PediatricOrthoPerioEndo

Topics: Growth & development, root canals, gum disease.
Questions: Specialized treatment planning.

🩵 💡 NBDE Study Tip

Focus heavily on the "Code of Ethics" and patient management sections. These areas often appear in the NBDE exam and are critical for passing the INBDE.

START DENTAL NBDE QUIZ

NBDE Score Calculator

Total Scored Questions

150

Estimated score calculation

105 out of 150 correct

70%

Required to Pass: ~70% (Estimated)

Your Score: 105 correct ✓ PASS

Dental NBDE Salary Information

NBDE Registration Process

Before you can sit for the NBDE exam, you must navigate the registration process with the American Dental Association (ADA).

JCNDE

Prometric

Pass Exam

NBDE Exam Fees

Understanding the NBDE cost structure helps in planning your licensure journey. Fees are non-refundable and non-transferable.

💵

$845

INBDE Exam Fee Standard application fee

🔄

$845

Retake Fee Same cost for re-examination

📅

$25-$100

Rescheduling Fee depends on notice given

🌍

$300+

International ECE report processing fee

📜

$50

Score Report Additional report requests

Budget approximately $1,000 - $1,500 for the NBDE exam including application fees, study materials, and potential rescheduling costs.

NBDE PREPARATION TEST

ADA NBDE Contact Information

For official questions regarding the NBDE exam, contact the Joint Commission or ADA directly.

🏢

JCNDE

Exam Administration

Website: ada.org/jcnde

Services: ADA NBDE Applications

Contact: 800-232-1694

📅

Prometric

Testing Centers

Website: prometric.com

Services: Scheduling & Rescheduling

Contact: 800-633-3926

🆔

DENTPIN Student ID

Website: ada.org/dentpin

Services: ID Retrieval & Updates

Contact: dentpin@ada.org

🎓

ECE

Credential Eval

Website: ece.org

Services: Foreign Degree Eval

Contact: 414-289-3400

🔍

Find

Jobs

NBDE KNOWLEDGE QUIZ

NBDE Test Day Checklist

Two valid forms of ID (matching DENTPIN)

Prometric confirmation email

Arrive 30 minutes early

Lunch and water (for breaks)

Leave electronics in locker

Review exam tutorial

Dress in layers (center temperature)

Positive mindset!

Ready to Pass the NBDE?

Start practicing with our free NBDE practice test questions today and get one step closer to your dental license. Comprehensive coverage of all key topics.

START FREE NBDE PRACTICE TEST

NBDE & Licensure Renewal

While the NBDE exam itself does not expire, your dental license requires periodic renewal.

🔄

Cycle

2-3 Years

📚

CE Hours

30-50 Hours

💲

Fee

$200-$500

Check your specific state board requirements for continuing education (CE) to maintain your dental license after passing the NBDE exam.

NBDE Exam Questions and Answers

What is the difference between INBDE and NBDE?

The NBDE exam was previously divided into NBDE Part 1 (biomedical sciences) and NBDE Part 2 (clinical sciences). The INBDE combines these into a single integrated exam.

How much does the NBDE exam cost?

The NBDE exam fees for the INBDE are approximately $845. There may be additional costs for rescheduling, international credential evaluation, or score reports.

Where can I find NBDE testing centers near me?

You can find NBDE exam testing locations by searching for "Prometric NBDE test centers near me" on the Prometric website. Tests are administered across the US and Canada.

How do I check my NBDE results?

You can check your NBDE results by logging into your MyNBDE account on the ADA website. NBDE login credentials are the same as your DENTPIN account.

Is the NBDE pass rate high?

Yes, the NBDE pass rate for first-time candidates from accredited schools is generally over 90%. Comprehensive NBDE preparation is still required to ensure success.

Where can I get NBDE study material?

You can find high-quality NBDE study material online, including our free NBDE practice test questions, flashcards, and review guides.

What happens if I fail the NBDE exam?

If you fail, you must wait 90 days before retaking the exam. You can use this time to review NBDE questions and work with an NBDE tutor.

Does the NBDE require clinical experience?

While you don't need a license to take the exam, having clinical knowledge is essential for answering case-based NBDE questions effectively.

Can I prepare for NBDE online?

Yes, many candidates successfully complete their NBDE preparation using online courses, question banks, and digital NBDE flashcards.

Do I need to pass NBDE Part 1 and 2 separately?

No, the new INBDE replaces the separate NBDE Part 1 and NBDE Part 2 exams. You now take one integrated examination.