# NBDHE Exam Prep Source-backed dental-hygiene lessons, original practice and patient cases, with saved progress and a study plan that fits your schedule. Agent source verification: 1 of 1 in-scope files are source-verified and published by Codex on 2026-09-08 with exact-content verification records. This is not credentialed clinical review. 0 files carry a current credentialed sign-off; 0 carry owner source verification. Review attributions apply only to the files where they appear. 24 lessons, 240 original discipline questions and 100 patient-case questions. [Free practice](/nbdhe/free-practice-test). One-time course price: $149. 180 days from purchase, no automatic renewal. [Get the course](/checkout/nbdhe). [Free preparation guide](/guide/nbdhe/how-to-pass). ## One place to study and review Read a focused lesson, apply it to original questions, and use the explanation to decide what to revisit. Each practice question includes the keyed answer, a rationale, explanations for the other choices, and a source. Mark an item for review and return to it from your account. The curriculum covers scientific foundations, clinical dental-hygiene services, and community health/research. Patient cases connect teaching points through fictional histories and explicitly supplied findings. The module titles are Dentovio's teaching organization; the official examination specification remains JCNDE's.[^A1] ## Practice with a clear purpose - **Tutor sessions:** See explanations as you work. - **Timed sessions:** Review explanations after the session. - **Focused review:** Choose unanswered, incorrect or flagged items and revisit scheduled material. - **Saved learning:** Resume practice and retain lesson completion in your account. - **Study planning:** Set your examination date, available study days and daily minutes. Practice scores describe performance on the questions you attempted. They are not JCNDE scaled scores or a prediction of passing. Repeated questions should be interpreted separately from a first attempt.[^A5] ## Prepare for the specification that applies to you JCNDE anticipates an NBDHE specification update in October 2026. Confirm the applicable version for your appointment with JCNDE. Dentovio offers explicit pre-update and announced post-update selections instead of assuming an exact transition day. Any simulation states its actual size; a full-length form is available only when the eligible unique inventory supports the selected specification.[^A1] ## What this course includes—and its limits This is a reading and interactive practice course. It does not include an instructional video series, audio lessons, a diagnostic radiograph image bank, accredited continuing education, clinical licensure, an examination registration, or a pass guarantee. Teaching cases do not provide an individual patient's treatment plan. Start with the [free preparation guide](/guide/nbdhe/how-to-pass) and [JCNDE's official preparation resources](https://jcnde.ada.org/nbdhe/nbdhe-prepare). Official samples remain separate from Dentovio's original inventory.[^A3] The course's current source-verification identity and credentialed-review status appear below. Dentovio is responsible for publication and corrections. Agent source verification does not claim a clinician personally reviewed the material. ## Footnotes [^A1]: `A1` JCNDE, 2026 NBDHE Candidate Guide, printed pp.5–10. . Accessed 2026-09-08. [^A3]: `A3` JCNDE, NBDHE preparation tools. . Accessed 2026-09-08. [^A5]: `A5` JCNDE, 2025 NBDHE Technical Report, sections 15–17. . Accessed 2026-09-08. ## Course publication status Agent source verification: 71 of 71 in-scope files are source-verified and published by Codex on 2026-09-08 with exact-content verification records. This is not credentialed clinical review. 0 files carry a current credentialed sign-off; 0 carry owner source verification. Review attributions apply only to the files where they appear. [Source and review methodology](/methodology).