NBDE Part I

It is the first written examination in the National Board Dental Examination series, administered by the ADA's Joint Commission on National Dental Examinations. It is a multiple-choice exam covering biomedical and dental sciences, and passing it is typically one requirement that state boards and dental schools factor into licensure and academic progression decisions.

Most candidates are dental students in the preclinical portion of their program, usually after the basic science courses that the exam tests. Exact eligibility and timing requirements are set by your dental school and your state board, so confirm the schedule with your academic office rather than relying on secondhand timelines.

The four content areas are anatomic sciences; biochemistry and physiology; microbiology and pathology; and dental anatomy and occlusion. Questions are discipline-based and often require applying a concept rather than recalling a single fact, so a strong foundation in the underlying basic sciences matters more than memorizing isolated details.

Those specifics are set by the ADA and change periodically; they could not be verified from the source consulted for this page, so no item count or time limit is stated here. Check the ADA's testing pages and your school's board preparation materials for the current format before you plan your pacing strategy.

Difficulty is best judged relative to your own basic science background, since the exam assumes mastery of coursework many candidates took a year or more earlier. Passing standards are established by the administering body and are not stated here because they could not be verified. Your school can tell you how its students typically perform.

Retake rules, waiting periods, and any limits on attempts are set by the ADA and by individual state boards, and they are not stated here because they could not be verified. Ask your school's board advisor and check the ADA's testing pages before you need that information, not after.

Treating it as a memorization sprint in the final month. The exam spans four disciplines, and candidates who cram one subject at a time tend to lose the earlier material. Start early, cycle back through each discipline repeatedly, and use missed practice questions as a diagnostic tool rather than just a score.

Follow your curriculum where possible: anatomy and physiology first, biochemistry alongside, then microbiology and pathology, with dental anatomy and occlusion woven in throughout since it rewards steady, repeated exposure. If you are studying after coursework is finished, front-load the disciplines you did least recently and revisit all four weekly.

Use your course notes and standard dental and biomedical textbooks as the content backbone, then add large volumes of practice questions to test retrieval under exam conditions. Commercial review courses vary widely in quality; evaluate any resource by whether it explains why wrong answers are wrong, not by how many questions it advertises.

Go to the ADA's education and testing pages and to your dental school's board office. Fees, appointment length, scoring, and retake policy are administrative details that are revised from time to time, and the version communicated by the ADA and your school is the one that governs your application.