This workflow is for early-career dentists sitting MFDS Part 1 who already own, or are weighing up, the Royal College of Physicians and Surgeons of Glasgow (RCPSG) official revision modules and preparatory questions. It treats that official material as a one-sitting calibration instrument for the written single-best-answer paper, not as a daily grind. The principal limitation is volume: the official set is finite, so it calibrates your judgement but cannot supply the repeated unseen practice a pass demands.
What RCPSG Official Modules offer for MFDS Part 1 right now
The figures below are vendor-reported from rcpsg.ac.uk and were last checked on 20 July 2026. Treat every number as provisional and reconfirm on the product page before you buy, because the MFDS qualification is mid-transition (see the exam anchor).
| Feature | RCPSG Official Modules (vendor-reported, 20 July 2026) |
|---|---|
| Product 1 | MFDS Part 1 Revision Modules — nine subject areas (restoration, dento-alveolar trauma, caries, drugs, periodontal disease, endodontics, orthodontics, oral surgery, oral mucosal disease) |
| Product 2 | MFDS Part 1 Preparatory Question Bank — "over 100" sample questions |
| Live question count | ~100+ preparatory questions (official set is small; verify the current figure on rcpsg.ac.uk) |
| Format | On-demand online modules; sample questions for self-assessment |
| AI / adaptive features | None advertised |
| Indicative price | Modules ~£80; preparatory questions ~£85 for RCPSG affiliate candidates (incl. membership) or ~£100 externally; a combined savings package is offered — verify current pricing |
| Access period | "Flexible, on-demand"; a fixed licence period is not clearly stated — confirm before purchase |
| Components supported | Written Part 1 knowledge only; no OSCE/Part 2 preparation |
The honest read is that RCPSG's material is an official calibration and foundation resource, not a high-volume question bank. Around a hundred sample items is enough to sample the blueprint and the house style; it is not enough to practise your way to fluency. That is the gap you will fill with fresh, unseen items.
Exam anchor: the current MFDS Part 1 format and what is changing
MFDS Part 1 is a computer-based written examination of single-best-answer questions covering the clinical dental sciences and their application to patient care. The legacy exam has been delivered by remote online invigilation; the Royal College of Surgeons of England describes it as a single three-hour single-best-answer paper, while the Royal College of Surgeons of Edinburgh exam-details page has listed 180 single-best-answer questions. Because the published counts differ between colleges, verify the exact number and duration for your college and sitting on rcseng.ac.uk, rcsed.ac.uk or rcpsg.ac.uk rather than trusting any third-party total.
The material change you must plan around: the three UK surgical royal colleges are moving to a unified intercollegiate MFDS. From late October 2026 the new Part 1 is sat in person at UK assessment centres, delivered under the Dental Examinations Executive, and is pitched at the level of a GDC-registered dentist completing the third year of dental core training. Reports describe the new Part 1 as two papers of around 90 single-best-answer questions each. The final legacy sitting is scheduled for October 2026, and a legacy pass will not transfer into the new qualification. Confirm which exam you are entered for and which official materials now apply, because RCPSG's college-specific modules were built around the legacy college syllabus and may be re-issued centrally.
None of that changes the calibration method below. Whether you sit the last legacy paper or the first intercollegiate one, the job is the same: use the official material once, properly, and then measure yourself on questions you have never seen.
Inventory your official material and label every item
Before you plan a single study day, list every piece of official or official-adjacent material you hold and label each item honestly:
- Unseen — you have never worked through it and have not read the answers.
- Attempted once — you have answered it under something like exam conditions but not reviewed it to death.
- Contaminated by review — you have read the explanations enough times that you now recognise the item rather than reason it.
For most candidates the RCPSG preparatory questions start as "unseen", the revision modules become "contaminated by review" quickly (they are teaching material you read repeatedly), and any past questions circulating in study groups are already "contaminated". The rule that follows from this labelling is simple: only genuinely unseen items can measure readiness. Everything contaminated is for learning, not scoring.
Choose the calibration date
Pick one date to sit your official material under exam conditions. It should be late enough that most of your revision is done, so the result reflects your real standing, and early enough that you still have room to correct weaknesses. For a three-month run-in, a calibration sitting four to six weeks out works well; for a compressed timeline, aim for the start of your final fortnight. Do not calibrate in the last few days — by then a poor result creates panic, not action, and a strong result tempts you to stop practising.
Reproduce exam conditions exactly
On the day, replicate the paper you will actually sit. Match the total time to your verified paper length, sit in one block with the same permitted breaks, and answer in the same single-best-answer format with no notes, no pausing to look things up, and no discussion. If you are moving to the assessment-centre format, rehearse working at a desk you cannot personalise, without your own reference tabs open. Log two things as you go: the questions you flag as uncertain, and the questions you answer confidently but wrongly — the second group is where the real risk lives.
Code every error by domain, cognitive process and format
Marking a percentage tells you almost nothing. Code each error three ways:
- Domain — for example oral surgery, oral medicine, dental materials, human disease, therapeutics, or law, ethics and health & safety.
- Cognitive process — was it a knowledge gap (you never knew it), a reasoning error (you knew the facts but chose wrongly), or a misread (you missed a qualifier such as "least appropriate" or a paediatric age band)?
- Format — did the item pivot on interpreting a radiograph or clinical photograph, on sequencing management, or on a straight recall of a threshold or dose?
A candidate who is "weak at oral medicine" and a candidate who "misreads negatively worded stems across every domain" need completely different remedies. The coding tells you which one you are.
Map each error to fresh practice — and keep official questions out of daily repetition
Now convert the coded errors into action, without re-running the official items. Each error type maps to a job:
- Knowledge gap → read the minimum source (NICE, CKS, SDCEP dental guidance, or the SmPC/eMC for a specific medicine), capture one decision rule, then test it on a fresh item.
- Reasoning error → drill discrimination between the plausible options, not the fact itself.
- Misread → practise timed blocks with deliberately awkward stems so the habit of reading the full question hardens.
Crucially, do not add the RCPSG preparatory questions to your daily rotation. Once you have calibrated on them, they are burned as a measurement tool. Re-drilling them teaches you their answers, which inflates your score without improving transfer. Keep them sealed for a possible second calibration only.
Repeat the calibration only with genuinely unseen material
If you calibrate a second time, use material you have never touched — a newly released official sample set, or a fresh unseen block from a third-party bank held back for the purpose. If no genuinely unseen official material remains, use transfer questions (unseen items on the same concepts) instead. A second sitting of the same official questions measures your memory of that paper, not your readiness for a new one.
Worked example: a seven-day plan
Priya is an overseas-qualified dentist eight weeks from MFDS Part 1. She has worked through the RCPSG modules and wants one clean job for the official material and a separate source of unseen volume. Here is one week, using RCPSG for calibration and iatroX for adaptive transfer practice. iatroX does not use any proprietary algorithm claim here; it simply serves fresh, timed, blueprint-mapped questions and lets her retest weak areas.
| Day | RCPSG (one job: calibrate) | iatroX (unseen transfer practice) |
|---|---|---|
| Mon | Sit the full preparatory question set under timed conditions | — |
| Tue | Code every error by domain, cognitive process and format | 20-item timed block on the two weakest domains |
| Wed | Read minimum sources for the three biggest knowledge gaps | Retest the same concepts with fresh items |
| Thu | — (official items sealed) | 30-item mixed block; log confident-but-wrong answers |
| Fri | Revisit reasoning errors using the modules as reference only | Discrimination drill on the muddled option pairs |
| Sat | — | Full timed mock-length block on unseen items |
| Sun | Review the week's error log; update the domain map | Short retest of Monday's worst domain to confirm carry-over |
The official set is touched twice (calibrate, then reference). Everything measured after that is unseen. Her headline percentage is deliberately ignored in favour of the trend in each coded domain — because a bank percentage is not an exam score.
Decision checklist: continue, supplement, switch or stop
- Continue with RCPSG modules if your errors are concentrated in the subjects they teach well and you have not yet exhausted the official questions.
- Supplement (the usual answer) if your calibration shows the knowledge is broadly there but you lack unseen volume — add a second, unseen bank and keep RCPSG as the official reference.
- Switch the daily driver to a larger bank if you are recognising the official items rather than reasoning them, or if the official set no longer matches your entered exam.
- Stop using the official questions for scoring the moment they become contaminated; retire them to reference and measure elsewhere.
Base every branch on a measurable gap — a domain below your target, a persistent misread pattern, weeks remaining — not on novelty or on how much you have already spent.
The bottom line
The RCPSG official modules and preparatory questions are a legitimate calibration and foundation resource with the authority of a college behind them, but they are small by design and were built for the legacy exam. Use them once to find out where you stand, code what breaks, and then spend your remaining weeks on genuinely unseen, timed practice. Calibration is a measurement; the pass is built on the practice that follows it.
Frequently asked questions
Is RCPSG Official Modules enough for MFDS Part 1 on its own? No, and the college does not present it as a complete solution. The revision modules teach nine subject areas well and the preparatory bank offers "over 100" sample questions (vendor-reported, rcpsg.ac.uk, 20 July 2026), which is enough to calibrate your judgement and learn the house style but not enough to build fluency through repeated unseen practice. Treat it as your official calibration and foundation layer, then add a larger source of fresh questions.
Which MFDS Part 1 component does RCPSG Official Modules not reproduce well? It does not reproduce sustained, high-volume unseen question practice, because the official set is finite and quickly becomes familiar. It also does nothing for the Part 2 OSCE, which is a separate clinical examination. If your calibration shows a reasoning or misreading problem rather than a knowledge gap, the small official set cannot give you the volume of novel stems needed to drill it out.
How many RCPSG Official Modules questions should I complete per day for MFDS Part 1? Because the official bank is small (around a hundred items), you should not ration it across many days at all — sit it once as a single timed calibration, then stop. If you are asking about daily volume for revision generally, most candidates sustain 30 to 50 mixed, unseen items a day from a larger bank, reviewed properly, rather than re-answering the same official questions and mistaking recognition for knowledge.
When should I stop using RCPSG Official Modules and move to mixed mocks? Stop scoring yourself on the official items as soon as you can predict their answers from memory — that is the point at which they measure recall of a paper, not readiness. Practically, that is usually after one full calibration sitting. Move to mixed, unseen, timed blocks immediately afterwards, keeping the modules open only as a reference for the errors you coded.
How should I combine RCPSG Official Modules with iatroX without duplicating practice? Give each tool one job. RCPSG is your official calibration and subject reference; iatroX is your source of fresh, timed, blueprint-mapped questions for the unseen practice that follows. Never transcribe RCPSG items into iatroX or anywhere else — that duplicates content, risks breaching their terms, and contaminates your measurement. Calibrate on RCPSG, then measure and drill on genuinely unseen iatroX items you have not encountered before.
Editorial notes and references
Written by Dr Kolawole Tytler, NHS GP and founder of iatroX. Last checked 20 July 2026. Vendor-reported figures (question counts, prices, access periods) change without notice and are labelled as such throughout; confirm every number on the RCPSG product pages before you rely on it. MFDS is mid-transition to a unified intercollegiate format from late October 2026 — verify your exact exam structure and eligible official materials with the awarding college. UK medicines facts should be taken from the SmPC/eMC and dental prescribing guidance from SDCEP, not from any formulary shorthand. Disclosure: iatroX operates a UK question bank that competes with third-party MFDS resources; this article confines iatroX to the unseen-measurement and transfer-practice role that the RCPSG official material does not claim to fill. Corrections are welcome via the feedback route on iatrox.com. References: RCPSG MFDS Part 1 revision modules and preparatory question bank pages (rcpsg.ac.uk); RCS England and RCSEd MFDS exam pages and the intercollegiate change notice (rcseng.ac.uk, rcsed.ac.uk); iatroX UK question bank (iatrox.com/quiz-landing); "Your Q-Bank Percentage Is Not Your Exam Score" (iatrox.com/blog/qbank-percentage-not-your-exam-score); the blueprint-coverage matrix guide (iatrox.com/blog/question-bank-completion-is-not-coverage-how-to-build-a-blueprint-coverage-matrix-for-any-medical-exam); the comparison hub (iatrox.com/compare).