NBDHE Practice Test 2026 — Free NBDHE Exam Prep Questions
The NBDHE is the written national board exam that every U.S. licensing jurisdiction uses to help decide whether a dental hygienist is qualified for licensure. Our original practice set follows the NBDHE test specifications, from the scientific basis of dental hygiene through clinical services to community health, and mixes discipline-based items with short patient cases like those on the real exam.
Researchers enroll 500 caries-free 6-year-olds, record whether each drinks sugar-sweetened beverages daily, and then examine all of them every year for 5 years to compare new caries between the two groups. What type of study is this?
NBDHE format, scoring & key facts
Computer-based at Pearson VUE test centers in the U.S. and Canada.
Facts last verified Oct 5, 2026. Source: jcnde.ada.org/nbdhe. Always confirm details with JCNDE before your exam.
When can you take the NBDHE?
Plan backwards from your exam date
What the NBDHE covers
Every PrepBanq NBDHE test mirrors the official domain weights.
Domain distribution
% of the exam| Content domain | Weight | ≈ Questions on exam | Our practice questions |
|---|---|---|---|
Scientific Basis for Dental Hygiene PracticeAnatomic sciences, physiology, biochemistry and nutrition, microbiology and immunology, pathology and pharmacology (61 discipline-based items). | 17% | ~60 | 5 questions → |
Provision of Clinical Dental Hygiene ServicesPatient assessment, radiographs, care planning, infection control, emergencies, pain control, periodontal therapy, preventive agents and supportive services (115 discipline-based items plus all 150 case-based items). | 76% | ~266 | 18 questions → |
Community Health/Research PrinciplesPromoting oral health in communities, program planning, epidemiology, and reading and interpreting research and statistics (24 items). | 7% | ~25 | 2 questions → |
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NBDHE FAQ
How many questions are on the NBDHE?
The NBDHE has 350 questions. Question types: Multiple choice: 200 discipline-based items and 150 case-based items (12–15 patient cases).
What is on the NBDHE?
The NBDHE covers Scientific Basis for Dental Hygiene Practice (about 17%), Provision of Clinical Dental Hygiene Services (about 76%), Community Health/Research Principles (about 7%).
Who administers the NBDHE?
The National Board Dental Hygiene Examination (NBDHE) is administered by JCNDE. Delivery: Computer-based at Pearson VUE test centers in the U.S. and Canada.
Is there a free NBDHE practice test?
Yes. PrepBanq has 3 free NBDHE practice tests with 25 exam-style questions in the real NBDHE formats, and every answer is explained. No credit card is needed.
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