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INBDE practice questions

These 20 INBDE practice questions are our own, written for the Integrated National Board Dental Examination (INBDE) and spread across its three clinical sections and the Foundation Knowledge areas that sit behind them. Each has four options and one best answer, with a short explanation. The real exam has 500 questions over two days, with three to five options each, so use this set as a quick check of what you know.

  • 20Practice questions on this page
  • 15Right answers for our 75% target
  • 75Minimum INBDE scale score to pass
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Updated November 2026 · Written from official sources, listed at the bottom of this page

Question 1 of 20

Tooth #30 has no response to cold or electric pulp testing, isn’t tender to percussion or palpation, and shows a periapical radiolucency. The patient has no symptoms. What is the diagnosis?

20 practice questions in the style of the exam.

How to use these INBDE practice questions

Questions 1 to 5 are diagnosis and treatment planning, 6 to 11 oral health management and 12 to 14 practice and profession, close to the JCNDE’s split of 36, 42 and 22%. The last 6 lean on the Foundation Knowledge areas: structure and materials, disease and microorganisms, pharmacology and research.

Aim for 15 right, which is 75%. That’s our own target. The INBDE is reported as pass or fail, and 75 is the minimum on a scale from 49 to 99, not 75% of the questions right. After each answer you can ask the tutor to explain it another way, and anything you miss comes back at the end.

How the 500 INBDE questions are laid out →How the INBDE score works →

Where can you find more INBDE practice questions?

The Joint Commission on National Dental Examinations (JCNDE) posts a free PDF of sample questions, written by the people who build the exam, and paid courses sell larger banks. Our 20 aren’t from the JCNDE. Steer clear of “remembered” questions from past exams: the JCNDE says obtaining, using or sharing exam questions is strictly prohibited.

The JCNDE’s sample questions and other prep →
Sources: JCNDE. Checked November 2026.

Rules and fees can change, so check the official site before your test.

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