- Overview of ADEX Requirements for 2026
- Who Is Eligible: Program and Authorization Rules
- The Two-Part Exam Series: CSCE OSCE and SPTCE
- Registration, Fees, and Retake Mechanics
- The 18-Month Window and Restart Policy
- Domain Requirements You Must Master
- Aligning a Study Plan to the Prerequisites
- After You Pass: What Licensing Boards Expect
- Frequently Asked Questions
- You must be a graduate or final-semester student of a CODA- or CDAC-accredited program, or hold jurisdiction authorization.
- The series costs $1,150 plus facility fees and includes one free clinical retake attempt.
- Both the CSCE OSCE and SPTCE require a minimum scaled score of 75 to pass.
- You have 18 months from your first attempt to pass both components.
Overview of ADEX Requirements for 2026
The 2026 ADEX Dental Hygiene Examination series, administered by the American Board of Dental Examiners, is built around two distinct components: the computer-based CSCE OSCE delivered at Prometric test centers, and the Simulated Patient Treatment Clinical Examination (SPTCE), performed on a typodont. Meeting the requirements to sit for ADEX isn't just about paying a fee and showing up - it involves program eligibility, documentation, scheduling logic, and understanding how the two exam components interact with each other on a strict timeline.
This guide breaks down exactly who qualifies, what each component demands, how the fee and retake structure works, and how to sequence your preparation around the official content weighting. If you want a deeper breakdown of the exam content itself, the ADEX Exam Domains Guide covers all six areas in detail, and our ADEX Study Guide walks through a full first-attempt preparation strategy.
Who Is Eligible: Program and Authorization Rules
Eligibility for the ADEX Dental Hygiene Examination is determined primarily by your educational background:
- Graduates or final-semester students of a CODA-accredited dental hygiene program in the United States, or
- Graduates or final-semester students of a CDAC-accredited dental hygiene program in Canada.
Candidates who fall outside these two categories - for example, those trained through alternative pathways - generally need explicit authorization from the licensing jurisdiction where they intend to become licensed before they can register for either component. This authorization requirement exists because ADEX results feed directly into state or provincial licensure decisions, so boards want to confirm a candidate's pathway before the exam clock starts.
Key Takeaway
Confirm your program's accreditation status (CODA or CDAC) before registering. If you're outside that pathway, secure written authorization from your target licensing jurisdiction first - this step can take longer than the exam registration itself.
The Two-Part Exam Series: CSCE OSCE and SPTCE
The 2026 series consists of two components that test different skill sets, and both must be passed to complete the requirement.
CSCE OSCE (Computer-Based Component)
Delivered at Prometric test centers, the CSCE OSCE presents up to 120 items, with the exact total varying by test form and including a small number of unscored pilot items. Candidates get 115 minutes to complete the exam, plus a separate 15-minute tutorial. The item formats are varied and go well beyond simple multiple choice:
- Selected-response and multiple-response items
- Extended matching sets
- Drop-down and fill-in-the-blank items
- Hot spot (image-based click) items
- Drag-and-drop items
A minimum scaled score of 75 is required to pass. Because the format mix is unusual compared to typical multiple-choice licensing exams, candidates benefit from practicing each item type individually rather than assuming general test-taking skill will transfer. Our ADEX Passing Score guide explains exactly how that scaled score is calculated and what it means for your raw performance.
SPTCE (Clinical Simulation Component)
The SPTCE is a hands-on clinical exam performed on maxillary and mandibular typodonts, allowing up to two hours to complete. It evaluates:
- Calculus detection accuracy
- Calculus removal technique
- Periodontal probing measurements
- Treatment management decisions
Like the CSCE OSCE, the SPTCE also requires a minimum score of 75. Because it's evaluated on a typodont rather than a live patient, candidates should treat tactile skill and instrumentation sequencing as trainable, repeatable habits - not something to leave to exam-day improvisation.
Registration, Fees, and Retake Mechanics
Understanding the fee structure is part of meeting the requirements, since unpaid balances or missed steps can delay eligibility for a retake. The full 2026 series costs $1,150 plus the clinical-site facility fee charged by the testing location. This fee includes one complimentary retake of the initial clinical examination - but that "complimentary" retake still requires paying the $150 typodont fee and the facility fee separately.
If a second attempt also fails, the mechanics change further:
| Situation | Cost |
|---|---|
| Full series (first attempt) | $1,150 + facility fee |
| Complimentary clinical retake (included) | $150 typodont fee + facility fee |
| Third clinical attempt | $795 + facility fee |
| Second or third CSCE OSCE retake | $275 each |
For a full breakdown of how these fees stack up against other exam-related expenses, see the ADEX Certification Cost breakdown.
Key Takeaway
Budget for more than the base $1,150 - facility fees, the $150 typodont fee on a retake, and potential third-attempt costs can add up quickly if either component isn't passed on the first try.
The 18-Month Window and Restart Policy
Requirements don't stop at passing scores - timing rules shape how you sequence your attempts:
- 18-month rule: Both the CSCE OSCE and SPTCE must be passed within 18 months of your very first attempt at either component.
- 10-day wait: After a failed attempt, candidates must wait a minimum of 10 days before retesting.
- Three-failure restart: If you fail the same component three times in a row, you must restart and repay for the entire series from scratch.
- No expiration: Once you've passed both components, your ADEX results do not expire - though the licensing board where you apply may impose its own application deadlines.
This combination means the biggest risk isn't a single failed attempt - it's letting failed attempts stack up against the 18-month clock. For a detailed look at how scheduling windows and deadlines interact with this rule, check the ADEX Exam Dates guide.
Domain Requirements You Must Master
The CSCE OSCE's content is distributed across six official domains for the 2026-2027 cycle. Meeting the "requirements" in a practical sense means allocating your preparation time in proportion to these weights, not evenly across topics.
Domain 2: Intra and Extra Oral Assessment and Charting (27%)
The single largest domain. Candidates must be fluent in systematic oral examination, periodontal charting conventions, and identifying abnormal findings.
- Prioritize charting accuracy and terminology precision
Domain 5: Patient Care (19%)
Covers direct patient management decisions, from comfort and safety protocols to procedural sequencing during treatment.
- Practice scenario-based reasoning, not just fact recall
Domain 3: Radiology/Imaging (15%)
Tests interpretation and technique for dental imaging, including recognizing anatomical landmarks and common artifacts.
- Review image-based item practice, since hot spot formats often appear here
The remaining three domains - Dental Specialties and Pharmacology (14%), Dental Hygiene Care Planning (13%), and Medical/Dental Assessment (12%) - round out the distribution but shouldn't be neglected simply because their percentages are lower. A weak score in any single domain can still pull your overall scaled score below 75. The complete domain guide covers every content area with more granular subtopics.
Aligning a Study Plan to the Prerequisites
Once eligibility is confirmed and registration dates are set, the remaining requirement is functional: arriving at test day with both knowledge and clinical execution ready simultaneously. A domain-weighted schedule works better than a generic review calendar because it forces time allocation to match the CSCE OSCE's actual point distribution.
Domain 2 and Domain 5 Deep Dive
- Drill charting scenarios and patient-care judgment items, since these two domains account for nearly half the CSCE OSCE
Domain 3, 6, and 4 Review
- Work through radiology image sets and pharmacology/specialty case questions; connect care-planning logic to earlier charting practice
SPTCE Technique Rehearsal
- Run full two-hour typodont simulations covering calculus detection, removal, and probing measurements under timed conditions
Full-Length Practice and Format Familiarity
- Complete timed CSCE OSCE simulations mixing all item formats - hot spot, drag-and-drop, extended match - to build format fluency
If you're unsure how difficult this preparation load actually is relative to other exams you may have taken, the ADEX difficulty guide puts the workload in context. And for a one-page reference you can review the night before test day, the ADEX Cheat Sheet condenses the must-know facts from every domain.
Key Takeaway
Spend proportionally more time on Domain 2 and Domain 5 - together they represent nearly half the CSCE OSCE's content weight - while still reviewing every domain since a low score in any one area can jeopardize the required 75 scaled score.
After You Pass: What Licensing Boards Expect
Passing both the CSCE OSCE and SPTCE satisfies the ADEX requirement itself, and importantly, ADEX results do not expire. However, this doesn't mean there's no urgency: individual licensing boards can impose their own application timelines, meaning a state or province might require you to submit your license application within a certain window after passing, even though ADEX itself places no expiration on the score.
This distinction matters for anyone who passes ADEX before deciding exactly where they'll practice. Confirming your target jurisdiction's specific application deadline should happen as soon as possible after your results post, not months later. For context on how ADEX certification translates into practice, review whether ADEX certification is worth it and browse practical outcomes in the ADEX jobs overview.
To reinforce everything covered here with realistic timed practice, our ADEX practice test platform lets you rehearse CSCE OSCE item formats under real exam conditions, and pairing that with typodont rehearsal for the SPTCE gives you the closest approximation to test day available before you register. Many candidates use full-length practice sessions specifically to gauge readiness against the 75 scaled-score requirement before committing to a registration date.
Frequently Asked Questions
No, but both must be passed within 18 months of your first attempt at either component. You can take them in either order as scheduling allows.
The series fee includes one complimentary retake of the initial clinical examination, though you'll still pay the $150 typodont fee plus the facility fee. A minimum 10-day wait applies before retesting.
You may still be eligible, but you'll generally need authorization from the licensing jurisdiction where you plan to seek licensure before registering.
Both the CSCE OSCE and the SPTCE require a minimum scaled score of 75. See the passing score guide for more detail on how scaling works.
Three successive failures on the same component require restarting the process entirely, including repaying for the full exam series.