The Overseas Registration Examination Part 1 consists of two computer-based papers, each of three hours, sat on the same day, using single best answer and extended matching questions, and you must pass both to progress. What matters far more than the format is what the two papers contain, because they are not two halves of one subject. Paper A tests clinically applied dental science and human disease, which is largely the dentistry you already know. Paper B tests clinical dentistry alongside law, ethics, health and safety, which for most overseas candidates is knowledge they have never been taught. Preparing for them identically is the commonest planning error in this exam.
Key takeaways
- Part 1 is two three-hour papers on the same day, and both must be passed at the same sitting.
- Paper A is science and human disease; Paper B carries the UK-specific law, ethics and safety content.
- Most of your clinical dentistry transfers directly. Your regulatory and professional knowledge does not.
- Tag every error as either a knowledge gap or an imported-practice gap, because they need different fixes.
- The UK regulatory content is finite and learnable, which makes it the best return on your revision hours.
Two papers, two completely different problems
Be honest with yourself about where you actually stand.
Paper A covers anatomy, physiology, biochemistry, pathology, microbiology, immunology, pharmacology, dental materials, dental anatomy and human disease. A competent dentist trained anywhere in the world has met most of this, and the science does not change at national borders. Caries is caries. The trigeminal nerve runs where it runs. Your task here is revision and calibration to the level and style of the questions, and it is a task you can approach with reasonable confidence.
Paper B is a different proposition. It covers clinical dentistry, which again is largely transferable, and it covers law, ethics, health and safety in UK dental practice, which is not transferable at all. Consent as the GDC understands it. Record keeping to UK standards. The radiation legislation. Safeguarding duties. The GDC's own standards for the dental team. Infection prevention as it is done here. Complaints procedures. Data protection.
None of that is inferable from being a good dentist. It has to be learned, from scratch, and most candidates leave it far too late.
The gap that is not a knowledge gap
Here is the distinction that should organise your entire review process.
When you get a question wrong, ask one thing before you read the explanation: did I not know the dentistry, or did I apply the rule from the country I trained in?
A candidate who cannot identify a lesion has a knowledge gap, and the remedy is to learn about the lesion.
A candidate who identifies it perfectly, knows exactly how to treat it, and selects the wrong option because the UK expects a different consent process, a different referral route, a different record, or a different prescribing decision has something else entirely. That is an imported-practice gap, and no amount of re-reading oral pathology will close it.
Both look identical on a dashboard. They need completely different responses, and candidates who do not separate them spend months revising dentistry they already know while the actual gap goes untouched.
So keep two error logs. When the log of imported-practice errors reaches twenty or thirty entries, look at them together, because they will cluster, and the cluster is your revision plan.
Where UK practice actually diverges
The divergence is not random, and knowing where it concentrates lets you attack it efficiently.
Consent. The UK framework has specific expectations about what must be discussed, what must be recorded, capacity, and consent in children and vulnerable adults. It is examined precisely and it is a common source of confident wrong answers.
Records. What must be recorded, how long it must be kept, and what a patient is entitled to see. This is a legal question rather than a clinical one.
Radiation. The legislation governing dental radiography, including justification, optimisation and the roles it defines, is UK-specific, statutory, and examinable in detail.
Safeguarding. Both children and vulnerable adults, including what raises concern, what you must do, and the fact that the duty to protect overrides confidentiality instincts trained elsewhere.
Prescribing. UK prescribing conventions, the drugs used here, antibiotic stewardship, and the situations where prophylaxis is and is not indicated, which differ between countries and are a favourite question type.
Infection prevention and health and safety. UK standards, the regulations that underpin them, and the specific requirements of a UK dental practice.
Professional standards. The GDC's principles for the dental team, raising concerns, working with colleagues, and the duty of candour.
Medical emergencies are examined and are not optional
One domain that overseas candidates consistently under-prepare, and that the exam takes seriously.
You must know the medical emergencies that occur in dental practice, their recognition, their immediate management, and the drugs and equipment that a UK dental practice is required to have available. This is not a peripheral topic and it is not a matter of judgement: there are correct answers, they are specific, and they are examinable.
The related domain is the medically compromised patient: the anticoagulated patient needing an extraction, the patient on bisphosphonates, the patient with cardiac disease, the diabetic, the immunosuppressed, and what each of those changes about your dental management. This sits at the junction of Paper A and Paper B and it is heavily represented in both.
Build the plan around the imbalance
Given all of this, the sensible allocation of your hours is not equal.
Give Paper A the time it needs to calibrate you to the level and style of the questions, and to fill the genuine science gaps that a coverage audit reveals. For most candidates this is a matter of weeks rather than months, because the knowledge is already there.
Give the UK-specific content of Paper B disproportionate attention from the beginning, in short frequent sessions, because it is finite, entirely learnable, and completely new to you. It is also, being pure recall of arbitrary rules, exactly the sort of material that decays, which means spaced retrieval rather than reading is the only thing that will hold it.
Candidates who invert this, revising the dentistry they know and cramming the law in the final fortnight, fail a paper they could have passed comfortably.
Where iatroX fits
iatroX's ORE Part 1 bank covers both papers with questions grounded in UK guidance and the GDC's own standards, so the regulatory content arrives with its source rather than as assertion, and it tracks the domains separately so that a healthy science score cannot conceal a law and ethics weakness. The adaptive engine returns the UK-specific rules you keep getting wrong, spaced repetition holds them across a long preparation, and missed questions can be opened in the Socratic Tutor, which asks you to reason before it explains, which is precisely the step that reveals an imported rule rather than a knowledge gap. Try it with free sample questions at iatroX. For the error-classification method in detail, see classifying your ORE Part 1 wrong answers.
Frequently asked questions
What is the format of ORE Part 1? Two computer-based papers, each of three hours, sat on the same day, using single best answer and extended matching questions. Both papers must be passed at the same sitting in order to progress to Part 2.
What is the difference between Paper A and Paper B? Paper A covers clinically applied dental science and human disease, which is largely universal. Paper B covers clinical dentistry alongside law, ethics, health and safety, which is UK-specific and is where most overseas candidates start from zero.
Why do good dentists fail ORE Part 1? Because they revise the dentistry they already know and neglect the UK regulatory content, which is not inferable from clinical competence. Consent, records, radiation legislation, safeguarding and the GDC's standards all have to be learned from scratch.
How should I review a wrong answer? Ask whether you did not know the dentistry, or applied the rule from the country you trained in. The first is a knowledge gap and needs content revision. The second is an imported-practice gap, and revising dentistry harder will never fix it.