INBDE Exam 2026: The Complete Guide for International Dentists
The INBDE (Integrated National Board Dental Examination) is the US national dental board exam, run by the Joint Commission on National Dental Examinations (JCNDE), an agency of the American Dental Association (ADA). It is a 500-question computer exam taken over two days, every US state accepts it toward a dental licence, and an internationally trained dentist can sit it once ECE confirms the dental degree, for a total of $1,325.
This guide covers all of it: eligibility, format, content areas, registration, fees, scoring, pass rates, retakes, study time and what comes after you pass.
How The Study Boards helps you with the INBDE
- Everything the exam covers, in one place: faculty-created Modules (one per subject) and Master Files, mapped to the clinical sections and the 10 Foundation Knowledge areas below.
- Practice in the exam’s own format: 35,000+ focused questions, the Master Test Series and the Grand Test Series of 8-hour mock exams build the stamina for two days and 200 case questions.
- A plan for every day: daily tasks for the day, nightly live tests at 9 PM New York time and mentor coordination.
- Extremely personalised: red lines and assignments are given to you on the go, the course learns from the way you are studying, and faculty are there to assist you.
Students who complete the course have a 99% first-attempt pass rate, backed by our Pass Guarantee. See the INBDE course blueprint.
INBDE at a glance
Sources: JCNDE INBDE 2026 Candidate Guide (updated 08/04/2026), JCNDE INBDE web page and ECE, all checked October 2026.
Who takes the INBDE, and are you eligible?
The INBDE helps US dental boards decide who is qualified for a licence. All 50 states, the District of Columbia, Puerto Rico, Guam and the US Virgin Islands recognise it.1
Two groups sit it. Students and graduates of dental schools accredited by CODA (the Commission on Dental Accreditation) take it during or after dental school. Dentists and students from schools outside CODA, which is almost every international BDS program, take it as the first big step toward practising in the US.
You already have your dental degreeYou are eligible as a “Dentist, Graduate of a Non-CODA-Accredited Program”. The one condition: ECE (Educational Credential Evaluators) must confirm your degree.1
You are still in dental school abroadYou can sit it as a current student. You need the ECE report too, plus a Certification of Eligibility form sent by your school, with the university seal and the signature of the dean or registrar.1
INBDE exam format: 2 days, 6 sections, 500 questions
Every section lasts 105 minutes. Day 1 is standalone questions plus one case section. Day 2 is all patient cases.1
| Section | Questions | Time |
|---|---|---|
| Day 1, Sections 1 to 3 | 100 standalone each (300) | 105 min each |
| Day 1, Section 4 | 60 case-based | 105 min |
| Day 2, Sections 5 and 6 | 70 case-based each (140) | 105 min each |
| Total | 500 (60% standalone, 40% cases) | 12 h 30 min with breaks |
One best answerEvery item is multiple choice with 3 to 5 options. Some are negatively worded with a capitalised EXCEPT, LEAST or NOT.1
Patient casesA case is 2 to 5 questions about one patient, with a patient box, charts, radiographs or photos. If the box leaves something out, treat it as unknown.12
No penalty for guessingNever leave a question blank. Some items are unscored trial questions that look exactly like real ones, so treat every question as if it counts.1
INBDE content: Clinical Content and Foundation Knowledge
The INBDE tests everything through the “Domain of Dentistry”: 56 Clinical Content areas grouped into 3 sections, crossed with 10 Foundation Knowledge areas. Basic science is never tested alone; it comes inside a clinical question.1
The three clinical sections (share of the exam)
Oral Health Management covers treatment itself: emergencies, pain control, endodontics, caries, periodontics, oral surgery, prosthodontics, occlusion, TMD and esthetics. Diagnosis and Treatment Planning covers examination, test results, systemic disease and building a plan. Practice and Profession covers ethics, law, records, infection control, research evidence and community health.1
The 10 Foundation Knowledge areas1
| FK | Area | Share |
|---|---|---|
| 1 | Molecular, biochemical, cellular and systems-level development, structure and function | 12% |
| 2 | Physics and chemistry to explain normal biology and pathobiology | 7% |
| 3 | Physics and chemistry to explain technologies and materials | 8% |
| 4 | Genetic, congenital and developmental diseases and conditions | 11% |
| 5 | Immune and non-immune host defence | 9% |
| 6 | General and disease-specific pathology to assess patient risk | 12% |
| 7 | Biology of microorganisms | 11% |
| 8 | Pharmacology | 11% |
| 9 | Behavioural sciences, ethics and jurisprudence | 11% |
| 10 | Research methodology, analysis and informatics | 10% |
Percentages are the JCNDE’s rounded test specifications, so they do not add to exactly 100.
INBDE registration in 7 steps
The order matters. Most delays come from doing ECE before DENTPIN, or from a name that does not match.
Every screen, with the common mistakes, is in our INBDE registration step-by-step guide.
How to prepare: our full plan
Registration takes a few weeks. Preparation takes months. Start the plan while your ECE report is being processed.
INBDE Premium BoardsBuilt and run by US-licensed dentists, in the order the exam is built:
- 12 sequenced course sections
- 35,000+ focused questions, including Master Files and a Master Foundation section mapped to every Foundation Knowledge area
- Full 8-hour Grand Test mocks
- Nightly live tests at 9 PM New York time
- Pass Guarantee: finish on time with no overdue days, score 60%+ on every test, and if you still do not pass, we refund the course fee and your INBDE registration fee (about $1,000)
Pick a schedule that fits your lifeMonth-by-month plans for every starting point:
INBDE exam cost in 2026
For an internationally trained dentist, the exam itself costs $1,325. All fees are in US dollars and are non-refundable.1
Count travel and a hotel near a US or Canadian Prometric centre in your budget too. Payment steps and exam-day rules are in our INBDE fees, schedule and exam day guide.
How INBDE scoring works
The INBDE is criterion-referenced: you pass by reaching a fixed standard, not by beating other candidates. There is no curve.2
A pass shows no numberYour report says only “Pass”. No school or board sees a score.1
A fail shows your scale scoreBetween 49 and 74, plus your performance in the 3 clinical sections and 10 Foundation Knowledge areas, so you know what to fix.1
Scale score, not raw scoreA 74 does not mean one more correct answer would have passed you. Every exam form is equated onto the same scale.1
INBDE pass rate in 2025
From the JCNDE’s own INBDE Technical Report, Table 16.1. A new, stricter passing standard took effect on 1 June 2024, so older pass rates you see online are out of date.2
CODA studentsfirst attempt
CODA studentsretake
International (non-CODA)first attempt
International (non-CODA)retake
| Year | CODA, first attempt | CODA, retake | International, first attempt | International, retake |
|---|---|---|---|---|
| 2023 | 99.6% | 86.0% | 84.1% | 66.2% |
| 2024 (new standard) | 95.2% | 67.9% | 74.7% | 47.2% |
| 2025 | 92.8% | 73.0% | 65.1% | 49.5% |
Pass rate = 100% minus the failure rate the JCNDE publishes. In 2025, 3,480 international dentists sat for the first time and 1,335 retook it.2
The gap between first attempts and retakes is the real lesson: an international dentist who fails once has about a coin-toss chance on the next try. Pass the first time. Our honest look at how hard the INBDE is for international dentists explains why.
How many times can you take the INBDE?
There is no lifetime limit, but there are strict spacing rules. Once you pass, you cannot retake it unless a dental board requires it.1
The 5 years / 5 attempts rule counts from your first INBDE attempt. Earlier NBDE Part I or II attempts do not count toward it, but they do appear on your report. In June 2025 the JCNDE cut the wait after this point from 12 months to 6.17 An attempt counts as soon as you accept the confidentiality statement at the start of the exam.1
Some Advanced Standing programs also look at attempts. Boston University, for example, gives preference to applicants who pass on the first attempt.8 The full rules are in INBDE retake rules 2026.
How long should you study for the INBDE?
Students who follow our course take 3 to 4 months on average, studying consistently every day.9 Your number depends on three things.
Time since graduationGraduated 3+ years ago? Add time for the basics before you start question banks.
Hours per dayA full-time student moves much faster than a dentist working full days in a clinic.
Timed practice105 minutes for 100 questions leaves about a minute per question. Train that speed before exam day.
What comes after the INBDE: your four routes
Passing the INBDE opens doors. It does not give you a licence on its own. These are the routes international dentists take next.
A 2 to 3 year program that ends in a US DDS or DMD, the most direct route to a full US licence. You apply through ADEA CAAPID with your INBDE pass. See the CAAPID guide and our CAAPID application program.
An Advanced Education in General Dentistry program, applied for through ADEA PASS. Some states give a limited licence after it; the rules vary by state, so check the state where you want to work. See AEGD programs for international dentists.
Some specialty programs, such as orthodontics, periodontics and endodontics, accept international dentists through ADEA PASS. Seats are few and competition is high. See CAAPID or PASS: how to pick.
Some dentists build a US career in dental education and research while they plan their next step.
Which guide do you need next?
Tap the option that sounds like you.
INBDE frequently asked questions
What is the INBDE, and who runs it?
How much does the INBDE cost for international dentists?
Can I take the INBDE in India, Pakistan or the Middle East?
What score do I need to pass the INBDE?
How many times can you take the INBDE?
Can I take the INBDE while I am still in dental school?
INBDE Premium Boards by The Study Boards
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References
- JCNDE. INBDE 2026 Candidate Guide (updated 08/04/2026): content, test specifications, item formats, schedule, eligibility, fees, application, ID policy, scoring, results and retest policy. jcnde.ada.org
- JCNDE. INBDE Technical Report, 2025 edition: 500-item format, criterion-referenced scoring, 2024 standard, Table 16.1 failure rates by candidate group and year. jcnde.ada.org
- JCNDE. INBDE exam page: test centres, Quebec notice, scheduling. jcnde.ada.org/inbde
- JCNDE. Apply for the INBDE. jcnde.ada.org/inbde/inbde-apply
- ECE. Evaluations for the ADA/JCNDE: report types and fees. ece.org
- ADA. Manage your DENTPIN. ada.org
- JCNDE. Unofficial Report of Major Actions, 25 June 2025: retest wait after five attempts or five years reduced to six months. jcnde.ada.org
- Boston University Henry M. Goldman School of Dental Medicine. DMD Advanced Standing: Application Process and Requirements. bu.edu
- The Study Boards: INBDE Premium Boards course blueprint and first-attempt results of students who complete the course. Course blueprint
Current as of October 2026. Exam rules, fees and pass rates come from the JCNDE’s 2026 Candidate Guide, its INBDE web pages and its 2025 Technical Report; ECE fees from ECE’s own site. Rules can change; confirm with the JCNDE before you apply.