ADEX Pass Rate 2026: What the Data Shows

What "Pass Rate" Actually Means for ADEX Dental

When candidates search for an "ADEX pass rate," most are picturing a single national percentage - something they can compare to a benchmark and feel reassured (or terrified) by. That framing does not match how the DLOSCE computer-based component of ADEX Dental is actually scored. Results come back as pass or fail against a minimum passing scaled score of 75 on a 49-99 scale. That scaled score is not the percentage of questions you answered correctly - it's a statistically derived value the American Board of Dental Examiners uses to normalize difficulty across test forms.

This distinction matters more than it sounds. A candidate who gets nervous about "needing 75%" is solving the wrong problem. The real target is a scaled performance level, and understanding how that scale is built - including partial credit rules on multiple-response items - tells you far more about your actual risk of failing than any headline percentage would. For the full breakdown of how the score is calculated, see our ADEX Passing Score guide.

Why There's No Public Pass Rate Percentage to Quote

DLOSCE became the required computer-based component for new ADEX Dental registrations effective June 1, 2026, with appointment scheduling opening in August. Because this is a newly mandated component - replacing the DSE OSCE for most candidates going forward - there is no long-running, publicly tracked national pass rate to cite for 2026. Anyone quoting a specific percentage for this exact exam is either guessing or importing a number from a different credential entirely.

What candidates already registered for an eligible initial DSE OSCE attempt need to know is more procedural than statistical: that legacy attempt must be passed by December 31, 2026. After that, retakes transition to DLOSCE, and unsuccessful DSE OSCE and DLOSCE attempts are counted together under the same series rules. In other words, your failure count doesn't reset just because the exam format changed underneath you. If you're navigating this transition, our ADEX Exam Dates guide lays out the testing windows and deadlines in sequence.

The Scoring Mechanics Behind Every Pass/Fail Decision

The 2026 JCNDE schedule for DLOSCE structures the exam into four sections of 37 questions each, plus two prescription tasks - 148 multiple-choice questions and 150 total assessment items. Each of the four question sections runs 75 minutes, and the two prescription tasks add 10 more active minutes, for 310 active minutes total. The full appointment, including tutorial, optional scheduled breaks, and an exit survey, runs approximately 405 minutes. It's worth noting that the "Exam" line item counts only the 148 questions, while its listed time also includes the two prescription tasks - a detail that trips up candidates trying to map out their pacing.

Question formats include single-answer and multiple-response clinical cases, patient information boxes, embedded images, manipulable 3D models, and antibiotic/analgesic prescription tasks. Experimental, unscored questions are mixed in as well, which means you can't identify and skip questions you assume "don't count" - every item has to be treated as scored.

For a deeper walk-through of question formats and pacing strategy, our How Hard Is the ADEX Exam guide breaks down where the 405-minute appointment actually gets tight.

Domain Weighting and Where Candidates Lose Points

Because DLOSCE draws its 148 questions across nine content domains, the weighting of each domain tells you where a miscalculation in prep time is most likely to cost you scaled-score points. The heaviest domains carry outsized influence simply because more questions are drawn from them.

For a full content breakdown of all nine domains with study priorities, see the ADEX Exam Domains Guide. If you want a fast-reference version for last-minute review, the ADEX Cheat Sheet condenses the same nine domains into a one-page format.

Retake and Series Rules That Shape Outcomes

Understanding retake mechanics is arguably more predictive of your eventual pass outcome than any study strategy, because the rules constrain how many chances you actually get and how quickly you can use them.

• You must wait at least 10 days after a failed DLOSCE attempt before registering for a retake.
• Three successive failures of the same component require a full-series restart.
• Three DLOSCE failures specifically also trigger a mandatory six-month wait from the latest failure date.
• The entire ADEX series must be completed within 18 months. For Traditional Format candidates, that clock starts with the first component attempt; Curriculum Integrated Format students start the clock on July 1 of the year before graduation.

Eligibility itself is also a gating factor in outcomes: only authorized CODA/CDAC dental students or graduates, and qualifying internationally trained dentists with the required educational documentation or board authorization, can sit for the exam at all. If you're unsure whether you qualify, review the ADEX Requirements guide before you plan a testing date.

The Real Cost of a Failed Attempt

The initial ADEX Dental series costs $2,995 plus facility fees and includes DLOSCE - there is no standalone initial DLOSCE-only registration option. If you fail and need to retake just the DLOSCE component, the second and third attempts are priced separately at $695 each. That means a single failure can add a meaningful line item to your overall licensure budget, on top of the time lost to the mandatory 10-day wait.

For a full accounting of every fee alongside preparation and licensing costs, see the ADEX Certification Cost breakdown. And if you're weighing whether the investment makes sense against your career plans, the Is ADEX Certification Worth It analysis puts the numbers in context.

Who This Data Actually Matters To

DLOSCE outcomes matter most immediately to CODA/CDAC-authorized dental students and graduates working toward licensure, plus internationally trained dentists completing the qualifying pathway. It's worth remembering that passing ADEX does not itself grant a dental license - it clears a required component that state boards use as part of their own licensure decision. Candidates researching outcomes on the employer side, or trying to understand how ADEX status connects to hiring and compensation conversations, will get more useful context from the ADEX Salary Guide and the ADEX Jobs overview than from any single pass rate figure.

Building a Domain-Based Prep Timeline

Generic study techniques only help if they're anchored to the actual domain weights and question mechanics above. Instead of splitting time evenly across nine domains, allocate blocks proportional to weight - Restorative and Prosthodontics first, Prescriptions last but not skipped.

For a structured, week-by-week version of this plan with more detail on each block, see the ADEX Study Guide. You can also run full-length practice sessions built around these exact domain weights at ADEX Exam Prep's practice test platform.

Frequently Asked Questions

Want to test your readiness against the exact 2026 question formats and domain weighting described here? Explore realistic practice sets at ADEX Exam Prep and pair them with the full ADEX Study Guide for a structured path to your test date.