ORE Paper A Exam Study Guide (2026)
Everything the ORE Part 1 Paper A: Dental Science and Human Disease tests, topic by topic: what each section covers, the facts that come up most, and how to study it. Pair it with the free 15-question practice test.
The exam at a glance
| Questions | Single best answer (SBA) and extended matching questions (EMQs); the GDC doesn't publish the number of items |
|---|---|
| Time | 3 hours |
| Passing score | Standard-set for each sitting and not given in advance. In August 2026 the minimum pass score for Paper A was 50.5% |
| Format | Closed book, computer-based |
| Certifying body | General Dental Council (GDC) |
| Test provider | UCL Consultants for the GDC, computer-based at an exam venue in London |
Mind map: the whole exam on one screen
Read the complete ORE Paper A study notes for “Anatomy, Dental Anatomy and Embryology”
Our first full set of comprehensive notes, about 15 minutes of reading: The trigeminal nerve where dentists meet it · Motor supply worth memorising · The facial nerve and taste · Fascial spaces and spread of infection · Tooth morphology and development, a worked exam example, the traps examiners use and a one-minute recap. Create a free account to read it and see how premium notes work before you decide.
1. Anatomy, Dental Anatomy and Embryology
Head and neck anatomy as it matters for local anaesthesia, surgery and spread of infection, plus tooth morphology, eruption and the development of the face, palate and teeth. Expect nerve, muscle and fascial-space questions and 'which tooth' identification.
Key facts
- The mandibular division of the trigeminal nerve (V3) gives the inferior alveolar, lingual, buccal and auriculotemporal nerves, and motor supply to the muscles of mastication, mylohyoid and the anterior belly of digastric.
- Taste from the anterior two-thirds of the tongue travels in the chorda tympani (facial nerve) with the lingual nerve; general sensation from the same area is lingual nerve (V3). The posterior third is glossopharyngeal for both.
- The facial nerve runs through the parotid gland: an inferior alveolar block placed too far posteriorly can give a temporary facial palsy.
- Infection from lower molars spreads below mylohyoid into the submandibular space when the root apices lie below the mylohyoid line; bilateral submandibular, sublingual and submental involvement is Ludwig's angina.
- The upper lip forms from the medial nasal and maxillary processes; the secondary palate from the palatal shelves, which fuse around weeks 8 to 12.
- Tooth development: initiation, bud, cap, bell, then crown and root formation. Hertwig's epithelial root sheath shapes the root; its remnants are the cell rests of Malassez (the origin of radicular cysts).
- Eruption: the first permanent molars and lower central incisors erupt at about 6 years; the maxillary first premolar usually has two roots; the mandibular first molar usually has two roots (mesial and distal).
Flashcards
Exam tip: Anatomy questions are usually anchored to a clinical event: a failed block, a facial palsy, a swelling spreading below the jaw. Ask yourself which structure explains the clinical picture.
2. Physiology and Biochemistry
Saliva, demineralisation and remineralisation, pain and nerve conduction, blood and haemostasis, and the basic biochemistry of enamel, dentine, collagen and bone. Questions often link a physiology fact to a caries or bleeding problem.
Key facts
- Critical pH: about 5.5 for enamel and about 6.2 to 6.7 for dentine and cementum. The Stephan curve shows plaque pH falling within minutes of sugar and recovering over 30 to 60 minutes.
- Unstimulated saliva is mostly submandibular; stimulated saliva is largely parotid. Saliva buffers (mainly bicarbonate when stimulated), clears sugars and supplies calcium and phosphate for remineralisation.
- Fluoride works mainly topically: it reduces demineralisation, speeds remineralisation and forms fluorapatite-like mineral that resists acid down to about pH 4.5.
- Local anaesthetics block voltage-gated sodium channels; small myelinated Aδ fibres (sharp pain) and unmyelinated C fibres (dull, lingering pain) carry dental pain.
- Haemostasis: vascular spasm, platelet plug (needs von Willebrand factor), then the coagulation cascade forming fibrin. Warfarin blocks vitamin K-dependent factors II, VII, IX and X.
- Collagen needs vitamin C for hydroxylation of proline and lysine; deficiency (scurvy) gives swollen, bleeding gingivae and poor healing.
Flashcards
Exam tip: When a question gives you a pH, a flow rate or a clotting result, translate it into what happens in the mouth: caries risk, healing, bleeding. That's the angle the examiners use.
3. Microbiology and Immunology
Oral microbiology (caries, periodontal and endodontic flora, candida, viruses), cross-infection agents, and the immune system including hypersensitivity, immunodeficiency and vaccination. Expect organism identification and mechanism questions.
Key facts
- Caries: mutans streptococci initiate smooth-surface lesions; lactobacilli are linked with progression in dentine; Actinomyces with root caries.
- Periodontitis is linked with a dysbiotic biofilm including Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola (the 'red complex'); Aggregatibacter actinomycetemcomitans is associated with molar-incisor pattern disease in young people.
- Candida albicans causes pseudomembranous (wipes off), erythematous, hyperplastic and denture-related candidosis, and angular cheilitis (often with Staphylococcus aureus).
- Herpes simplex type 1 causes primary herpetic gingivostomatitis and recurrent herpes labialis; varicella-zoster causes shingles in a dermatome, for example the trigeminal divisions.
- Hypersensitivity: type I IgE-mediated (anaphylaxis, latex), type II cytotoxic antibody, type III immune complex, type IV delayed T cell-mediated (contact dermatitis to methacrylates or nickel).
- Hepatitis B vaccination is expected for clinical dental staff exposed to blood; a response (anti-HBs of at least 10 mIU/mL) should be checked after the course.
Flashcards
Exam tip: For hypersensitivity questions, the time course is the giveaway: minutes means type I, 24 to 72 hours means type IV.
Test yourself on these topics
Take the free 15-question ORE Paper A test, then save your results to unlock your Readiness Score and the mistakes bank.
4. Pathology and Human Disease
General pathology (inflammation, healing, neoplasia), the medical conditions that change dental care (cardiovascular, respiratory, endocrine, bleeding disorders, liver and kidney disease) and their oral signs.
Key facts
- Acute inflammation is neutrophil-led with vascular changes; chronic inflammation is lymphocytes, macrophages and plasma cells with repair by fibrosis.
- Benign tumours expand and are often encapsulated; malignant tumours invade and metastasise. Oral squamous cell carcinoma spreads first to cervical lymph nodes.
Flashcards
Exam tip: Many questions describe a patient, not a disease. Pick out the one oral sign that points to the systemic condition and work backwards.
5. Pharmacology and Therapeutics
The drugs a UK dentist prescribes (antibiotics, analgesics, antifungals, antivirals, local anaesthetics, fluoride) and the drugs patients take that change dental care (anticoagulants, antiplatelets, bisphosphonates, steroids). UK doses from the BNF and SDCEP Drug Prescribing for Dentistry.
Key facts
- Local anaesthetics: lidocaine 2% with 1:80,000 adrenaline is the UK standard; articaine 4% is common for infiltrations; prilocaine 3% with felypressin is an option when adrenaline is a concern. A 2% solution contains 20 mg per mL.
- Antibiotics are an adjunct to drainage, not a replacement. For a dental infection with spreading or systemic signs SDCEP lists amoxicillin 500 mg three times daily or phenoxymethylpenicillin 500 mg four times daily, usually for 5 days; metronidazole 400 mg three times daily is an option if the patient is allergic to penicillin.
Flashcards
Exam tip: Drug questions often turn on one interaction or one threshold. Learn the warfarin interactions (miconazole, metronidazole, erythromycin) and the INR rule as a pair.
6. Dental Materials Science
Composition, setting reactions, properties and handling of restorative, impression, cementation and prosthetic materials. Questions ask why a material behaves as it does and which one suits a clinical situation.
Key facts
- Composite resins set by free-radical addition polymerisation (camphorquinone photoinitiator, blue light around 470 nm) and shrink on setting; incremental placement and bonding reduce stress.
- Conventional glass ionomers set by an acid-base reaction between polyalkenoic acid and fluoroaluminosilicate glass; they bond chemically to tooth and release fluoride.
Flashcards
Exam tip: If a question asks which material to choose, look for the one property the scenario turns on: moisture tolerance, fluoride release, stiffness or delayed pouring.
7. Statistics and Evidence-Based Dentistry
Study designs, bias, basic statistics and diagnostic test measures, and how to appraise evidence and guidelines. Calculation questions are usually sensitivity, specificity or predictive values.
Key facts
- Hierarchy of evidence: systematic reviews and meta-analyses of RCTs, then RCTs, cohort studies, case-control studies, case series and expert opinion.
- Randomisation balances known and unknown confounders; allocation concealment and blinding reduce selection and assessment bias.
Flashcards
Exam tip: Draw the 2 × 2 table every time. Disease across the top, test result down the side, and the calculation becomes a lookup.
How to pass
- Paper A and Paper B are taken in the same sitting and you must pass both. Don't neglect the sciences because Paper B feels more clinical: each paper has its own pass mark.
- Questions are pitched at a 'just passed' UK BDS graduate and linked to the GDC's learning outcomes. Learn the science as it applies to the dental chair, not as a pre-clinical textbook.
- Pharmacology questions follow UK sources: the BNF, the Dental Practitioners' Formulary and SDCEP guidance. Learn UK drug names and doses.
- Each paper is standard-set, so the pass mark moves (50.5% for Paper A in August 2026). Aim for a clear margin, 65% or more in timed mocks.
Frequently asked questions
How long should I study for the ORE Paper A exam?
Most working candidates need 4 to 8 weeks at 45 to 60 minutes a day. Book your exam once your Readiness Score has stayed at 80 or higher for about a week.
Can I take the ORE Paper A exam online?
No. ORE Part 1 is computer-based but sat in person at an exam venue in London allocated by the GDC's exam provider. Format: closed book, computer-based. Check the GDC's ORE pages for the current arrangements.
What score do I need to pass the ORE Paper A exam?
Standard-set for each sitting and not given in advance. In August 2026 the minimum pass score for Paper A was 50.5%. The exam has single best answer (sba) and extended matching questions (emqs); the gdc doesn't publish the number of items and a time limit of 3 hours.
What are the most tested topics?
The outline covers anatomy, dental anatomy and embryology, physiology and biochemistry, microbiology and immunology, pathology and human disease, pharmacology and therapeutics, dental materials science, statistics and evidence-based dentistry. Use the free practice test to see which ones you need most.
The premium ORE Paper A study path
Premium ORE Paper A prep is studied one topic at a time. Each step starts with that topic's key notes and flashcard deck, then its own question sets of 25, so you master one topic before you move to the next. When every topic is strong, the 6 full mock exams show you're ready.
Your step-by-step study path
- 1Anatomy, Dental Anatomy and Embryology9 key notes, 115 flashcards, then 450 practice questions in 18 sets of 25Notes free with an account
- 2Physiology and Biochemistry9 key notes, 115 flashcards, then 425 practice questions in 17 sets of 25Premium
- 3Microbiology and Immunology9 key notes, 115 flashcards, then 425 practice questions in 17 sets of 25Premium
- 4Pathology and Human Disease9 key notes, 115 flashcards, then 425 practice questions in 17 sets of 25Premium
- 5Pharmacology and Therapeutics8 key notes, 115 flashcards, then 425 practice questions in 17 sets of 25Premium
- 6Dental Materials Science8 key notes, 115 flashcards, then 425 practice questions in 17 sets of 25Premium
- 7Statistics and Evidence-Based Dentistry8 key notes, 110 flashcards, then 425 practice questions in 17 sets of 25Premium
- Final step: 6 full mock exams50 questions each, timed like test day. Pass them, then book your exam.Premium
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- 800 flashcards + 60 key notes per exam, by topic, plus mind maps
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- Readiness Score & detailed reports
- Video lessons as they release
- Content updates during your access
- 5 bonuses: UK guidelines numbers sheet, oral pathology atlas, study planner and more
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Renews once a year until you cancel. We email you before each renewal. Cancel any time from your account; you keep access until the end of the year you've paid for.
Summarized from the General Dental Council's official candidate information and the rules cited, checked November 2026. Confirm current requirements with General Dental Council (GDC).