What Is Tested on the INBDE? Foundation Knowledge Areas and Clinical Content Explained
The INBDE tests whether you can safely practise general dentistry at entry level. Every one of its 500 questions is written from the JCNDE’s Domain of Dentistry: 56 Clinical Content areas in three groups, crossed with 10 Foundation Knowledge areas, so each question tests a clinical task and the science behind it at the same time.
How The Study Boards helps you cover what is tested
- Our faculty-written Modules and Master Files follow the Domain of Dentistry, so every Clinical Content area and every Foundation Knowledge area has a home in the course.
- 35,000+ focused questions, daily tasks for the day and nightly live tests at 9 PM New York time train you on standalone items and patient cases alike.
- The Master Test Series and the 8-hour Grand Test Series build the two-day stamina the real exam needs.
- The course is extremely personalised: it learns from the way you are studying, red lines and assignments are given to you on the go, and faculty are there to assist you.
One blueprint: the Domain of Dentistry
One exam that joins basic science and clinical dentistry.
The JCNDE builds the INBDE on a single content framework called the Domain of Dentistry. It has two halves. The Clinical Content (CC) areas are 56 tasks a new general dentist performs, grouped into Diagnosis and Treatment Planning, Oral Health Management, and Practice and Profession. The Foundation Knowledge (FK) areas are the 10 bodies of science you need to perform those tasks well.1
Think of it as a grid: 56 rows of clinical tasks, 10 columns of science. Expert panels decided how many of the 500 items belong in each cell of that 56 x 10 grid, and every exam form is built to match those numbers.2 So a question is never “just pharmacology” or “just endodontics”. It is a clinical task, answered with a piece of science. At The Study Boards, we build every study plan around this same grid.
How one item is cross-coded (our illustration)
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The JCNDE does not publish the coding of individual live items. This example only shows how the grid works.
INBDE exam format
500 items, 6 sections of 105 minutes each, 12 hours 30 minutes in total including the optional tutorial, breaks and survey.1
Day 1: 8 hours 15 minutes
Day 2: 4 hours 15 minutes
| Section | Content | Time |
|---|---|---|
| Day 1, Sections 1 to 3 | 100 standalone items each (300) | 105 min each |
| Day 1, Section 4 | 60 items in cases | 105 min |
| Day 2, Sections 5 and 6 | 70 items in cases each (140) | 105 min each |
| Optional extras | Tutorial each day, scheduled breaks, end survey | Included |
Two days, same centreDay 2 must fall within 7 days of Day 1 at the same test centre. The days do not have to be back to back. Miss that window and you retest at your own expense.1
Answer optionsEvery item is multiple choice with at least 3 and at most 5 options, and only one correct or best answer.1
Items per caseA case is 2 to 5 items about one patient. Cases can draw on any content area, including Practice and Profession.2
The item types you will see
Completion and question items
Negatively worded items
Patient box items
Case items: two kinds
Unscored experimental items
For booking, fees and test-day rules, see our complete INBDE guide and the INBDE test day guide.
The INBDE content map
All 56 Clinical Content areas and all 10 Foundation Knowledge areas, in plain words. The numbers are the JCNDE’s; the sub-groups inside each tab are ours, to make the list easier to study.1
Everything that leads to an accurate diagnosis and a safe treatment plan: history, examination, tests, systemic disease and talking with the patient.
Gather and examine CC 1 to 3, 11
- 1Interpret patient information and medical data
- 2Identify the chief complaint and what contributes to it
- 3Head, neck and intraoral examination and its findings
- 11Collect information from the patient, guardian, records, staff and other health professionals
Diagnose CC 4 to 10
- 4Use clinical and epidemiological data to diagnose and give a prognosis
- 5Know the normal range and spot deviations that need action
- 6Predict the most likely diagnostic result
- 7Interpret diagnostic results
- 8Recognise systemic disease and how it, and its treatment, change dental care
- 9Oral health and systemic disease: the links, and how to improve overall health
- 10Choose the diagnostic tool most likely to confirm the diagnosis
Plan and communicate CC 12 to 15
- 12Build a comprehensive diagnosis and treatment plan
- 13Explain causes, alternatives and prognosis so the patient can decide
- 14How age, sex, background, values and special needs shape care
- 15Communicate using psychological, social and behavioural principles
Delivering care: emergencies, disease management, drugs and every treatment discipline. This is the largest group.
Emergencies and pain CC 16 to 19
- 16Medical emergencies: prevent, recognise, manage
- 17Dental emergencies
- 18Acute pain, bleeding, trauma and infection of the orofacial region
- 19Pain control during treatment
Disease management CC 20 to 25
- 20Pulpal and periradicular disease
- 21Caries
- 22Periodontal disease
- 23Oral mucosal and bone disease
- 24Patient abuse and neglect: recognise, manage, report
- 25Substance abuse
Drugs CC 26 to 27
- 26Select, give or prescribe drugs for dental patients
- 27Prevent and manage drug complications
Treatment disciplines CC 28 to 36
- 28Endodontic diagnosis and procedures
- 29Restorative needs of edentulous and partially edentulous patients
- 30Restore missing or defective tooth structure for function and esthetics
- 31Fixed, removable and implant prosthetics
- 32Oral surgical needs: diagnose and manage
- 33Oral surgical procedures
- 34Developmental or acquired occlusal problems
- 35Temporomandibular disorders
- 36Modify oral tissues for form, function and esthetics
Outcomes and esthetics CC 37 to 38
- 37Evaluate the outcomes of comprehensive care
- 38Manage the patient’s esthetic needs
Running a safe, legal, evidence-based practice and caring for communities. Often under-studied, yet 22% of the exam.
Evidence and trends CC 39 to 41, 43
- 39Emerging trends in health care
- 40Social and economic trends and their effect on oral health care
- 41Evaluate the literature and combine evidence with patient values
- 43Use laboratory, clinical and information technology resources
Law, ethics, records and business CC 44 to 48
- 44Manage risk within law and ethics
- 45Respond to ethical and legal situations
- 46Keep patient records correctly
- 47Business and financial operations within the law (for example OSHA and HIPAA)
- 48Catastrophe preparedness for the practice
You and your team CC 42, 49, 50, 56
- 42Stay within a general dentist’s scope; consult and refer when needed
- 49Supervise allied dental staff
- 50Assess your own skills and knowledge
- 56Communicate case design to the lab and check the result
Infection control, prevention and community CC 51 to 55
- 51Standard precautions for infection control
- 52Prevention, intervention and patient education
- 53Work with the dental team and other professionals for community health
- 54Systems of care that meet a population’s needs
- 55Quality assurance and improvement
The science behind every clinical task. Share of the whole exam from the JCNDE test specifications; examples from the JCNDE document “Foundation Knowledge for the General Dentist”.13
FK 1 · Development, structure and function 12%
FK 2 · Physics and chemistry of normal biology and disease 7%
FK 3 · Physics and chemistry of technologies and materials 8%
FK 4 · Genetic, congenital and developmental conditions 11%
FK 5 · Immune and non-immune host defence 9%
FK 6 · General and disease-specific pathology 12%
FK 7 · Biology of microorganisms 11%
FK 8 · Pharmacology 11%
FK 9 · Behavioural sciences, ethics and jurisprudence 11%
FK 10 · Research methodology, analysis and informatics 10%
INBDE test specifications as a heat map
The JCNDE’s own table: the percentage of items in each clinical group for each Foundation Knowledge area. Darker cells hold more items.1
| FK1 | FK2 | FK3 | FK4 | FK5 | FK6 | FK7 | FK8 | FK9 | FK10 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Diagnosis and Treatment Planning | 5% | 2% | 2% | 5% | 4% | 5% | 4% | 3% | 3% | 3% | 36% |
| Oral Health Management | 7% | 4% | 4% | 4% | 4% | 4% | 4% | 4% | 3% | 3% | 42% |
| Practice and Profession | <1% | <1% | 2% | 2% | 1% | 3% | 2% | 3% | 5% | 4% | 22% |
| Total | 12% | 7% | 8% | 11% | 9% | 12% | 11% | 11% | 11% | 10% | 100% |
The JCNDE rounds every value, so rows and columns may not add up exactly.1
No area dominatesEvery Foundation Knowledge area sits between 7% and 12%. You cannot pass by being brilliant in two subjects and skipping the rest.
Treatment is the biggest groupOral Health Management carries the most items, and FK 1 inside it is the single heaviest cell at 7%.
Ethics and research countFK 9 and FK 10 together are about a fifth of the exam. Many candidates leave them for the last week. Do not.
A course weighted like the exam
Because no area dominates, our course gives every Foundation Knowledge area its own place, including a Master Foundation section and case-based Diagnosis Series. US-licensed dentists answer your questions, not AI.
How to study for an integrated, case-based exam
The INBDE rewards connected thinking. Six habits that match how it is built.
After each topic, ask “where would this show up in a patient?” Link caries microbiology to fluoride, diet and restoration choice. That is the CC x FK link the exam tests.
Medicines, allergies, vitals and history often decide the answer. Blank means unknown. Scan the box before the options.
Comprehensive cases use radiographs, photographs and charts together, so we train our students on case sets, not just one-line questions, in their daily tasks and nightly live tests. Our INBDE practice questions guide shows what good practice looks like.
Ethics, law, records, infection control and biostatistics are 22% of the clinical side. They are quick to learn and easy marks to lose.
Day 1 alone is more than 8 hours. That is why our Grand Test Series runs 8-hour mock exams, so you sit full timed simulations before the real one. See how to take INBDE simulation exams.
The exam targets what a new general dentist needs. Depth beyond that costs time without adding marks, so our faculty write the Modules to that level; our INBDE study materials guide explains how they fit together. To make it stick, our daily tasks, nightly live tests and test series are built on active recall and spaced repetition, and red lines and assignments come back to you on the go.
Check yourself
1. How many items on the INBDE sit inside patient cases?
2. A patient box lists no allergies. What should you assume?
3. Which group carries the most items: Diagnosis and Treatment Planning, Oral Health Management, or Practice and Profession?
How to prepare: our full plan
Now you know what is tested. Here is how to cover all of it in order.
The Study Boards INBDE courseINBDE Premium Boards, built by US-licensed dentists to cover every CC and FK area:
- 12 sequenced course sections
- 35,000+ focused questions, including Master Files and Grand Tests
- Full 2-day simulation exams
- Nightly live tests at 9 PM New York time
- Pass Guarantee
Pick a schedule and a start datePlans for full-time students and working dentists:
What the INBDE opens up in the US
Most routes cost roughly $250,000 to $450,000 all-in, and almost everyone finances this with loans: private loans, co-signer loans with a US citizen or green-card holder, and a few international lenders that need no co-signer. See your roadmap after the INBDE.
Frequently asked questions
What subjects are on the INBDE?
How many questions are on the INBDE?
Is the INBDE case-based?
Does the INBDE test clinical skills?
Do all INBDE questions count?
How does The Study Boards help you prepare for what is tested on the INBDE?
How is the INBDE different from NBDE Part I and Part II?
Not sure where your gaps are?
Message us on WhatsApp. Our Admin Team with Dr. T and Dr. Kaur will contact you over WhatsApp.
References
- Joint Commission on National Dental Examinations (JCNDE). INBDE 2026 Candidate Guide (updated 08/04/2026): Domain of Dentistry, 56 Clinical Content and 10 Foundation Knowledge areas, test specifications, sample item formats, patient box, unscored items, administration schedule. jcnde.ada.org
- JCNDE. INBDE Technical Report (2025 data): 500 items, 60% standalone and 40% in cases, case types, 2 to 5 items per case, allocation across the 56 x 10 grid, clinical relevance and integration. jcnde.ada.org
- JCNDE. Foundation Knowledge for the General Dentist: descriptions, disciplines and example topics for FK 1 to 10. jcnde.ada.org
- JCNDE. INBDE Information for Test Takers (July 2019): no clinical skills demonstration; 500 items compared with 900 on NBDE Part I and II; less reliance on recall. jcnde.ada.org
Current as of October 2026. Plain-language labels for the Clinical Content areas and the sub-groupings inside each tab are ours; the official wording is in the JCNDE Candidate Guide. Confirm current details with the JCNDE before you apply.