What topics are covered on the NBDHE?

The NBDHE covers three major content areas: scientific basis for dental hygiene practice, provision of clinical dental hygiene services, and community health and research principles. Specific subjects include anatomy, physiology, pharmacology, microbiology, pathology, radiology, periodontology, dental materials, patient management, and ethics. Questions are presented as patient case-based scenarios and standalone items that test applied knowledge rather than rote memorization.

Who is eligible to take the NBDHE?

Candidates must have graduated from or be enrolled in their final year of a dental hygiene program accredited by the Commission on Dental Accreditation (CODA). Students in their final year may take the exam up to 90 days before their expected graduation date. International dental hygiene graduates must have their credentials evaluated and meet additional requirements set by the Joint Commission on National Dental Examinations.

How do I register for the NBDHE?

Registration is handled through the Joint Commission on National Dental Examinations via the American Dental Association website. You create an account on the JCNDE portal, submit your application with proof of eligibility from your dental hygiene program, pay the examination fee, and then schedule your test date and location through Pearson VUE, which administers the exam at testing centers nationwide.

How many times can I retake the NBDHE?

Candidates who do not pass may retake the NBDHE, but there is a waiting period of at least 60 days between attempts. After three failed attempts, candidates must wait one full year before testing again. Each retake requires a new application and full payment of the examination fee. Some state dental boards may impose additional limits on the total number of attempts allowed.

What is the format of the NBDHE questions?

The NBDHE uses multiple-choice questions in two distinct formats. Component A contains approximately 200 standalone discipline-based items. Component B presents 150 questions based on 12 to 15 dental hygiene patient cases, each including medical histories, dental charts, radiographs, and clinical photographs. All questions have four or five answer choices with a single correct response.

What score do state boards require for NBDHE licensure?

While the NBDHE itself uses a pass/fail standard score of 75, individual state dental boards set their own requirements for accepting the exam. Most states accept the standard passing score, but some may require a higher scaled score for licensure eligibility. Check with your specific state board of dentistry, as requirements vary and some states also mandate additional regional or state-specific clinical examinations.

How should I prepare for the NBDHE case-based questions?

Focus your study on integrating knowledge across multiple disciplines rather than memorizing isolated facts. Practice reading patient cases that combine medical history, pharmacology, radiographic interpretation, and treatment planning. Review dental hygiene process of care steps systematically. Use timed practice tests to build stamina for the nine-hour exam day, and study radiograph interpretation regularly since case-based questions heavily feature dental imaging.

Can I use the NBDHE score to get licensed in any state?

The NBDHE is accepted as part of the licensure process in all 50 states, the District of Columbia, and most U.S. territories. However, passing the NBDHE alone does not grant a license. Most states require additional components such as a clinical board examination, jurisprudence exam, CPR certification, and completion of a state-specific application process before issuing a dental hygiene license.

NBDHE Practice Test

Updated for September 2026

Dr. Alexandra KimSep 1, 202612 min read

⏱️9HoursTotal Duration

📝350Total Questions

✅75Passing Score

💵$565Exam Fee

Important Update: The JCNDE NBDHE continually updates its item bank. Candidates should focus on the latest guidelines for periodontics, radiology, and pharmacology. Always check the official NBDHE Candidate Guide for the most current protocols before your exam date.

Nbdhe Practice Test - NBDHE Test study guide

NBDHE Practice Test Questions

Prepare for the NBDHE Test exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.

NBDHE Dental Hygiene Care

NBDHE Exam Questions covering Dental Hygiene Care. Master NBDHE Test concepts for certification prep.

NBDHE Dental Hygiene MCQ

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NBDHE Community Oral Health Principles

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START NBDHE DENTAL HYGIENE CARE QUIZ

NBDHE Prep Flashcards

Quick review for the National Board Dental Hygiene Examination

🦠What is the primary cause of periodontal disease?

Bacterial plaque biofilm accumulation

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💊Which medication causes gingival enlargement?

Phenytoin (Dilantin), Cyclosporine, Nifedipine

START NBDHE MCQ QUIZ

🦷What is the critical pH for enamel demineralization?

pH 4.5 to 5.5

START NBDHE TRIVIA QUIZ

🦴Which radiograph best evaluates bone levels?

Vertical Bitewing radiograph

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📋ASA Classification for a patient with controlled hypertension?

ASA II

START NBDHE TRIVIA QUIZ

🧂Optimal fluoride concentration in water?

0.7 ppm (parts per million)

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START NBDHE MCQ PRACTICE QUIZ

NBDHE Exam Study Guide

Our comprehensive NBDHE Study Guide breaks down the complex requirements of the exam. From registration details to the specific NBDHE Pass Rate statistics, this guide answers your most pressing questions about the National Board Dental Hygiene Examination NBDHE.

What is the NBDHE exam?	The National Board Dental Hygiene Examination NBDHE is a standardized test that assesses the qualifications of dental hygienists for licensure. It is administered by the JCNDE and is required for licensure in all U.S. jurisdictions.
Who administers the ADA NBDHE?	The exam is administered by the Joint Commission on National Dental Examinations (JCNDE), which operates under the American Dental Association (ADA) governance structure.
What is the NBDHE Pass Rate?	The NBDHE Pass Rate is generally high, often hovering around 90% for first-time candidates from accredited programs. However, pass rates can fluctuate annually based on candidate performance.
Is the NBDHE Prep hard?	The NBDHE Prep is challenging because it covers a vast amount of material, including biomedical sciences and clinical hygiene. Consistent study using an NBDHE Review course is recommended.

What is the NBDHE exam?

The National Board Dental Hygiene Examination NBDHE is a standardized test that assesses the qualifications of dental hygienists for licensure. It is administered by the JCNDE and is required for licensure in all U.S. jurisdictions.

Who administers the ADA NBDHE?

The exam is administered by the Joint Commission on National Dental Examinations (JCNDE), which operates under the American Dental Association (ADA) governance structure.

What is the NBDHE Pass Rate?

The NBDHE Pass Rate is generally high, often hovering around 90% for first-time candidates from accredited programs. However, pass rates can fluctuate annually based on candidate performance.

Is the NBDHE Prep hard?

The NBDHE Prep is challenging because it covers a vast amount of material, including biomedical sciences and clinical hygiene. Consistent study using an NBDHE Review course is recommended.

Prioritize "Medical Emergencies" and "Pharmacology" in your NBDHE Prep. These sections often contain critical safety questions that are heavily weighted in the exam scoring algorithm.

START NBDHE TRIVIA QUIZ

NBDHE Score Calculator

Total Scored Questions

150

How many questions did you answer correctly?

0105150

105 out of 150 correct

70%

Required to Pass: ~70% (Estimated)

Your Score: 105 correct✓PASS

NBDHE Registration Process

🎓

Year

1-2Education Accredited Program

🆔

Pre

-Exam DENTPINRegister ID

Obtain a DENTPIN - Register for your unique dental personal identifier number on the ADA website.
Verify Eligibility - Ensure you are a student or graduate of a CODA-accredited dental hygiene program.
Submit Application - Apply for the National Board Dental Hygiene Examination NBDHE via the JCNDE portal and pay the fee.
Schedule Exam - Once approved, schedule your exam appointment with Pearson VUE NBDHE.
Prepare - Use an NBDHE Study Guide and practice tests to prepare for the big day.
Take the Exam - Bring valid ID to the test center and complete the 9-hour examination.
Receive Scores - Review your NBDHE Results 3-4 weeks later and apply for state licensure.

Plan for approximately $1,500 - $2,500 total, including the NBDHE Exam fee, regional clinical exam fees (~$1,000+), and study materials. This investment leads to a career with strong earning potential.

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NBDHE Career Opportunities

Passing the NBDHE opens doors to diverse specialties in dental hygiene.

👶

Pediatric Hygienist

Specializes in treating children and adolescents, requiring patience and knowledge of primary dentition.

🏥

Public

Health RDHWorks in community clinics or schools to provide care to underserved populations and promote oral health education.

🏫

Dental Hygiene Educator

Teaches future hygienists in academic settings, typically requiring a master's degree in addition to the NBDHE.

🔬

Research Hygienist

Conducts studies on new products, therapies, and disease trends for universities or oral care companies.

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NBDHE Test Day Checklist

✓Two forms of valid ID
✓DENTPIN confirmation
✓Arrive 30 mins early
✓Review exam center rules
✓Leave electronics in locker
✓Bring lunch/snacks (9 hours)
✓Dress in layers (AC)
✓Positive mindset!

📄Free NBDHE Practice Test PDF

Ready to Pass the NBDHE?

Join thousands of dental hygiene students who have successfully passed their boards using our free resources. Start your NBDHE Prep today.

NBDHE Renewal Requirements

🔄

Renewal Cycle Every

2 Years

📚

CE Credits

20-30 Hours

Always maintain active BLS (Basic Life Support) certification and keep records of your Continuing Education (CE) credits in case of a state board audit.

✅Pros

+Validates your knowledge and skills objectively
+Increases job market competitiveness
+Provides structured learning goals
+Networking opportunities with other certified professionals

❌Cons

−Study materials can be expensive
−Exam anxiety can affect performance
−Requires dedicated preparation time
−Retake fees apply if you don't pass

NBDHE Questions and Answers

NBDHE

NBDHE Dental Hygiene Board Exam Practice Test PDF (Free Prin

About the Author

Dr. Alexandra KimPhD Professional Studies, CPLP, CPTD

Certified Professional Development Expert & Niche Certification Advisor

University of Pennsylvania Graduate School of Education

Dr. Alexandra Kim holds a PhD in Professional Studies from the University of Pennsylvania and is a Certified Professional in Learning and Performance (CPLP) and Certified Professional in Talent Development (CPTD). With 17 years of corporate training and professional certification advisory experience, she helps professionals navigate specialized, emerging, and cross-industry certification programs.