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independent · clinician-signed · 9 boards

Practice deliberately.
Read the why.
Close the gap.

The study tool for board candidates who can’t afford to waste an hour. Lumen surfaces the topics you keep losing marks on across 9 exams — with rationales tied to published competency guidelines, and a clinician’s signature on every item.

No card. No sign-up wall. 20 board-style questions; topic gap analysis at the end.

Items vetted against

AAEAAP / EFPAAOMSICCCCDCNDEB blueprint

01 — Sit a real mock

Twenty items, timed.

Board-style stems, blueprint-weighted across topics, with mark-for-review and a navigator. Free, no card required, finishes inside thirty minutes.

02 — Read the why

Rationales, not vibes.

Every item explains why the key is right and why each distractor is wrong, citing AAE, AAP/EFP, AAOMS, ICCC, CDC, OSHA, and official competency blueprints.

03 — Close the gap

Restudy the weak topics.

Your score breaks down by topic so the domain you keep losing marks on rises to the top. Run targeted 25-item sets until the curve flattens.

Preview · diagnostic player

Sit the same player
you’ll sit on exam day.

The diagnostic mirrors the real exam’s mechanics — count-up timer, mark-for-review, jump navigator, single-best-answer MCQs. No flashcard app dressed up as a mock. No streaks, no tricks.

Timer · count-upMark for reviewQuestion navigatorSingle best answerCited rationale
AFK · diagnostic · 07 / 2014:32

Endodontics · pulpal diagnosis

A 42-year-old presents with spontaneous, lingering pain in tooth #14. EPT is non-responsive; the tooth is tender to percussion. Which diagnosis is most consistent?

AReversible pulpitis
BSymptomatic irreversible pulpitis
CPulpal necrosis with symptomatic apical periodontitis
DInternal resorption

Editorial standards

Clinician review,
every time.

Bad prep questions teach you the wrong instinct. Ours pass three filters before you see them: drafted against a published competency domain, screened on clinical plausibility, distractor quality and citation presence, then signed off by a licensed clinician.

If an item can’t survive that, it doesn’t reach you. We don’t reproduce or solicit recalled exam questions. Independent platform — not affiliated with NDEB, ADA, JCNDE, FDHRC, NDAEB, or DANB.

Drafted

Against published competency blueprints. Never recalled or proprietary content.

Reviewed

Second clinician checks stem clarity, distractor quality, and citation presence.

Signed

A licensed clinician approves every question before it goes live to a student.