Orthodontics Exam Dates 2026: Testing Windows, Deadlines & Scheduling

Overview: What "Exam Dates" Actually Means for the ABO Written Exam

Unlike certification exams offered continuously throughout the year, the American Board of Orthodontics runs its Written Examination (exam code ABO-WE) as a single annual administration. That structure changes how you plan. There's no rolling appointment calendar to browse and no "next available Tuesday" - there's one registration window, one testing date, and a hard deadline that determines whether you sit for the exam this cycle or wait roughly twelve months for the next one.

This matters because Certification in Orthodontics candidates are usually residents or recent graduates juggling clinical rotations, board preparation, and often the parallel demands of the Scenario-based Clinical Examination pathway. Missing a registration deadline by even a few days doesn't mean a short delay - it means an entire additional year before you can attempt certification. If you're still mapping out prerequisites, review our Orthodontics Requirements guide before you commit to a testing cycle.

The 2026-2027 Testing Cycle at a Glance

For candidates planning around the 2026 calendar year, the administration you're actually registering for is the April 6, 2027 Written Examination. The registration period for that exam runs November 2, 2026 through January 7, 2027. The official 2027 reading list is already published, and the 2026 Written Examination Study Guide (dated July 2, 2025, and reviewed September 22, 2026) reflects the current examination specifications, which are based on the 2023 practice analysis.

Registration Window: November 2, 2026 - January 7, 2027

The roughly nine-week registration window is your only opportunity to lock in a seat for the April administration. Within that window you'll submit the application, confirm program verification (if you're a current resident), and pay the associated fees. Because testing is coordinated through Data Recognition Corporation and delivered at Pearson VUE Professional Centers, you'll also need to schedule your specific test-center appointment once registration is processed.

Two practical points worth building into your planning:

• Program verification takes time. If you're relying on your residency program to confirm your 18-month milestone, start that conversation well before the registration window opens - not during it.
• Accommodation requests have their own clock. Supporting documentation for any testing accommodation must be submitted at least 90 days before your test date, which for an April 6, 2027 exam means well before the registration window even closes.

For a full breakdown of how these dates interact with everything else you're required to submit, our Requirements guide lays out the eligibility checklist in order.

What You Pay, and When

The written exam has two components for first-time candidates: a $400 application fee and a $740 examination registration fee, totaling $1,140. If you need to repeat the written exam, the registration fee within five years is $740 - you don't pay the application fee again in that window. These figures are separate from the Scenario-based Clinical Examination, which costs $1,875, and from the $285 annual certification maintenance fee that applies once you're fully certified.

For a line-by-line cost comparison across the entire certification journey - written exam, clinical exam, and ongoing maintenance - see our dedicated Certification Cost breakdown.

Eligibility Timing: Don't Miss the 18-Month Residency Mark

Eligibility for the Written Examination requires graduation from, or current enrollment in, a CODA-accredited orthodontics and dentofacial orthopedics program in the United States or Canada. If you're still in residency, you must have completed at least 18 months of the program by the examination date, and your program must verify this directly. There's also an approved Advanced Standing pathway for candidates who qualify outside the traditional residency track.

This 18-month threshold is measured against the exam date - April 6, 2027 for the upcoming cycle - not against your registration date. A resident who registers in December 2026 but won't hit 18 months of training until May 2027 would not meet eligibility for that administration and would need to wait for the following cycle.

Exam Day Logistics at Pearson VUE

The Written Examination is a closed-book, 240-question exam with five hours of answering time, delivered at Pearson VUE Professional Centers. A few operational details candidates consistently underestimate:

• Identification: You need two valid, signed forms of ID, at least one of which is government-issued with a photo.
• Materials: Outside references and personal electronics are prohibited. Center-provided whiteboards are permitted for working through calculations or diagrams.
• The clock doesn't pause: Personal breaks during the exam do not stop the timer, so plan your five hours accordingly rather than assuming breaks are "free" time.
• Question format: Expect multiple-choice and multiple-select items built around clinical records and exhibits. Multiple-select questions make up roughly 10-25% of the exam and are scored all-or-nothing - there's no partial credit for getting some, but not all, correct selections.

That all-or-nothing scoring on multiple-select items is one of the most consequential format details in the entire exam, and it should directly shape how you practice. If you haven't yet worked through how this affects your answer strategy, our Passing Score guide explains the scoring mechanics in more depth, and the Difficulty Guide puts the format in context against the rest of the exam experience.

Blueprint Snapshot: What You're Actually Studying For

The current examination specifications are based on the 2023 practice analysis and organize content into three domains. Orthodontic Clinical Sciences carries the most weight by a wide margin, which should directly influence how you allocate study time in the months before your registration deadline.

For a full walkthrough of every subtopic inside each of these three domains, see the Exam Domains Guide. And if you want the condensed, exam-day-ready version of the same material, our Cheat Sheet distills the highest-yield facts into a single page.

Scheduling Your Prep Around the Calendar

Because the Written Examination happens once a year, your preparation timeline should be anchored to two fixed points: the registration deadline (January 7, 2027) and the exam date (April 6, 2027). Working backward from those dates, rather than forward from "whenever I feel ready," keeps your preparation on schedule.

This is one of the few places where general study techniques genuinely apply: spacing your review sessions across this window rather than compressing them into the final weeks tends to produce stronger retention, especially for the exhibit-heavy Domain 3 content. For a fully structured week-by-week plan built around this same blueprint, see our Study Guide, and use the practice exams on our main practice test platform to simulate the timed, closed-book conditions you'll face at the Pearson VUE center.

After the Written Exam: What Happens Next

A passing written exam score does not expire, which gives you flexibility on when you pursue the separate Scenario-based Clinical Examination to complete full certification. Once fully certified, renewal currently operates on a ten-year cycle, pairing 12 AJO-DO/AJO-DO Clinical Companion CE credits with a 50-question, 90-minute online Board Case Examination, or an eligible case-report route instead.

Worth noting: a September 2026 MyABO announcement described a future five-year learning model still in development, though the current official renewal page continues to specify the ten-year cycle. Candidates planning several years out should watch for updates on this before assuming today's renewal terms will remain fixed indefinitely.

If you're weighing whether the full certification pathway - written exam, clinical exam, and ongoing renewal - is worth the time and cost investment, our ROI Analysis and Salary Guide break down the broader career picture, and our Pass Rate article puts the 2026 outcomes data in context. You can also browse Orthodontics Jobs to see how certification status factors into hiring conversations.

Frequently Asked Questions