The NBDHE covers a huge body of knowledge — from histology to pharmacology to community health — and trying to revise it all from textbooks alone is overwhelming. These 8 tips focus on what actually moves the needle for dental hygiene students and NBDHE candidates preparing for the NBDHE (National Board Dental Hygiene Examination) — and at the end you will find a free app that makes them effortless to follow.
1. Build a domain-by-domain schedule and revisit your weakest area first.
2. Drill practice questions daily — recall beats re-reading every time.
3. Use flashcards for high-yield facts like drug classes and nerve pathways.
4. Work through case studies the way the real test presents them.
5. Read every answer explanation, even for questions you got right.
6. Mix categories so you practise switching topics like the real exam.
7. Track your accuracy per domain and let the data steer your revision.
8. Simulate test conditions in the final two weeks to build stamina.
Put These Tips on Autopilot
Knowing the tips is the easy part — doing them every day is what raises your score. RDH Board Prep keeps your practice and revision in one place so good study habits stick.
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.