Got questions about the NBDHE (National Board Dental Hygiene Examination)? This FAQ answers what dental hygiene students and NBDHE candidates ask most — clearly and without jargon — and points you to a free app that makes revision easy.
Quick How-To
- Map the syllabus. Know every area the exam can test.
- Diagnose your gaps. A short practice set per area shows where to focus.
- Practise daily. Active recall with questions and flashcards is the fastest route.
- Review and repeat. Read explanations, re-test, and track your progress.
Frequently Asked Questions
How many questions are on the NBDHE?
The NBDHE has a discipline-based component and a case-based component totalling several hundred items across a full day. Practising under timed conditions is essential.
What score do I need to pass the NBDHE?
It is reported as pass/fail against a scaled standard. Focus on consistent accuracy across every domain rather than a single percentage.
How long should I study for the NBDHE?
Most candidates revise seriously for 6–10 weeks, mixing daily practice questions with targeted flashcard review of weak areas.
Are case studies really that important?
Yes — the case-based component is a large share of the exam. Practise reading a patient scenario and answering several linked questions from it.
Can I study offline?
Yes — the RDH Board Prep app works fully offline so you can revise on placement, on the bus or anywhere.
Is the app free?
Yes — the practice questions, flashcards and case studies are free, with an optional ad-free Pro upgrade.
What the Free App Covers
RDH Board Prep helps you revise across the whole syllabus, including:
- Anatomy, physiology and embryology
- Histology and periodontology
- Microbiology, immunology and general/oral pathology
- Pharmacology
- Radiology and radiographic interpretation
- Clinical dental hygiene and patient management
…and more — all offline, private, and free with an optional ad-free Pro upgrade.