The Membership of the Joint Dental Faculties (MJDF) was a Royal College of Surgeons of England assessment based on the UK dental foundation training curriculum. These 60 selected concepts connect archived objectives with clinical and professional guidance. They provide representative study across the major clinical, communication, professionalism and practice-management domains; they do not establish competence in every related objective.
Assessment and diagnostic interpretation
1. A history that changes the care plan
In children from birth to 18 years, the medical, dental and social history should include current toothbrushing practice, dietary habits and previous experience of dental treatment. These findings inform assessment of the child's and parent or carer's ability and motivation to take responsibility for oral health, and the tailoring of preventive care and treatment to encourage compliance.
Worked example: A seven-year-old attends with early lesions. The history shows brushing happens only when a grandparent visits, so the plan includes practical support for the family and prevention tailored to that routine rather than advice the carers cannot follow.
Mistake to avoid: Recording how often a child brushes without establishing who in the household can reliably supervise or assist.
Reference: [7]
2. Caries extent and activity answer different questions
Examine clean, dry teeth individually, tooth by tooth, to detect caries in both dentitions. Assess the activity of each lesion clinically, and use radiographs, where clinically justified, to assess extent and progression over time rather than as routine imaging. In children, treat carious lesions as active unless there is evidence that they are arrested.
Worked example: A bitewing taken for a justified reason shows a primary molar lesion apparently unchanged since the previous radiograph. Without clinical evidence of arrest, the lesion is still managed as active, with the images used to judge extent and progression.
Mistake to avoid: Assuming a lesion is inactive because its radiographic depth has not changed between two assessments.
Reference: [7]
3. Pulp sensibility testing in periodontal assessment
Thermal and electric pulp sensibility tests can help determine pulp status when pulpal disease is suspected. They may be particularly useful where severe periodontal bone loss or a suspected endodontic-periodontal lesion complicates interpretation. Test selection supports assessment, but an isolated result should not be treated as a complete diagnosis on its own.
Worked example: A lower molar shows severe bone loss and a deep defect reaching the apex region. Sensibility testing with cold and electric stimuli is selected as an additional investigation because the periodontal appearance alone cannot establish pulp status.
Mistake to avoid: Concluding that the pulp is non-vital solely because periodontal bone loss around the tooth is extensive.
Reference: [6]
4. Describe periodontal bone loss systematically
A periodontal radiographic description should systematically record the degree of bone loss, the type of loss such as horizontal or angular and infrabony defects, and the distribution, whether localised or generalised where views of multiple teeth are available. When the apex is visible, record root involvement as a percentage of the root surface affected.
Worked example: A periapical image of an upper molar shows an angular defect, but the apex lies outside the field. The description records the angular pattern and visible findings, and no percentage of root involvement is stated.
Mistake to avoid: Documenting bone loss as a precise percentage of the root when the apex is not visible on the image.
Reference: [6]
5. Oral cancer concern begins with examination
At each oral health assessment, update the history and perform intraoral and extraoral visual and tactile examination. Unexplained ulceration lasting over three weeks, persistent unexplained neck lumps, suspicious lip or oral lumps, and erythroplakia or erythroleukoplakia patches warrant urgent or suspected cancer referral under national and local arrangements. Duration does not justify delaying referral for other suspicious findings, and referral reflects concern, not confirmed cancer.
Worked example: During a routine assessment a clinician updates the history and examines intraorally and extraorally, notices a red and white patch consistent with erythroleukoplakia, and refers the patient on an urgent suspected cancer pathway the same day rather than waiting to see whether it changes.
Mistake to avoid: Assuming that meeting a referral criterion establishes a cancer diagnosis, when the pathway exists to investigate suspicious findings that may still prove benign.
Reference: [11]
6. Tooth wear assessment links findings to sources of risk
Assess tooth wear with a validated tool such as the Basic Erosive Wear Examination when a new treatment course starts. Where wear is accelerated, identify possible intrinsic, extrinsic and mechanical sources of risk and support the patient in risk reduction. These are good practice points; the guidance gives no scoring rules or specific causal mappings, so the tool records severity while causes need separate assessment.
Worked example: A clinician records a validated tooth wear score for a patient beginning a new treatment course, then assesses possible intrinsic, extrinsic and mechanical risk sources separately, noting that the score alone does not assign a cause, before agreeing risk-reduction steps with the patient.
Mistake to avoid: Treating the recorded severity score as if it revealed the cause, when the score measures extent and risk sources need separate assessment.
Reference: [11]
Communication, consent and shared care
7. Explain the options before seeking agreement
Before treatment starts, explain the options relevant to the individual situation, including delaying treatment or doing nothing, together with the risks and benefits of each, and give full information about the proposed treatment and possible costs. The rule does not make delay clinically appropriate in every case; it requires that patients can weigh genuine alternatives before agreeing.
Worked example: Before proposing a crown, a clinician explains its benefits and risks, what leaving the tooth untreated or postponing care could mean, and the likely costs, tailoring the discussion to this patient's circumstances rather than assuming delay suits everyone.
Mistake to avoid: Discussing only the clinician's preferred option, so the patient cannot weigh alternatives such as delaying treatment or doing nothing against it.
Reference: [5]
8. Check understanding through dialogue
Adapt communication to each patient's needs, avoid professional jargon and acronyms, and satisfy yourself that information was understood, for example by asking questions or summarising the main points. Adjustments may include interpreters or support for hearing difficulties according to individual need. Patients also need enough information and enough time to ask questions and take part meaningfully in the decision.
Worked example: After describing two options without jargon, a clinician asks the patient to summarise them; when the patient confuses the sequences, the clinician re-explains using simpler wording and checks understanding again before allowing time to decide.
Mistake to avoid: Accepting a nod as proof of understanding instead of checking through questions or a summary, risking agreement that is not genuinely informed.
Reference: [5]
9. Include the child in the conversation
Children should take part in decisions about their own oral health alongside their parents or carers. Speak directly to the child rather than discussing them as though absent, while ensuring valid consent is obtained from the appropriate person or people for planned care.
Worked example: A dentist preparing to discuss a filling asks the eight-year-old directly how she feels about treatment and what worries her, then separately talks with her grandmother about how she can support brushing at home, involving both in the agreed plan.
Mistake to avoid: Directing every explanation only at the accompanying carer while the child sits silently excluded from the discussion.
Reference: [7]
10. Keep the written treatment plan current
Patients must receive a written treatment plan before care begins, and a copy should be kept in the notes. If the agreed plan changes, tell the patient straight away and supply an updated written version, including a realistic cost indication and clarity about NHS or private arrangements.
Worked example: Midway through a course of care, an agreed crown is replaced by a proposed bridge. Before any preparation begins, the dentist explains the revision, issues a rewritten plan showing the revised fee and whether each element is NHS or private.
Mistake to avoid: Handing over a written plan at the first visit and never updating it after the treatment approach materially changes.
Reference: [5]
11. Consent remains a responsibility throughout care
Consent is not a one-off event but must stay valid at every stage of investigation or treatment. Agreement given at the start does not remove the duty to check that the patient, or their representative, still understands each decision being made as care progresses and circumstances change.
Worked example: A patient consents to a simple restoration, but during the visit the clinician finds the decay is deeper than expected and pulp therapy may be needed. Before continuing, the dentist explains the new option and confirms the patient agrees to proceed.
Mistake to avoid: Assuming a signature obtained at the first appointment covers every later alteration to the planned treatment.
Reference: [5]
12. Referral preserves continuity of care
When a child is referred, use the appropriate local referral arrangements, include all relevant information in the communication, and continue providing the child's dental care. Referring does not by itself transfer every responsibility; for children living elsewhere, refer to the service local to the child rather than the usual one.
Worked example: A practice refers a child living in a neighbouring area to a specialist service near the child's home, sending a referral letter with the relevant clinical details, and continues to provide routine prevention and reviews at the practice afterwards.
Mistake to avoid: Sending a referral letter and then declining to see the child again until the specialist service has finished.
Reference: [7]
Preventive care across the life course
13. Fluoride toothpaste advice depends on age and risk
Toothpaste guidance varies with age and caries risk. Children up to three should have a smear of toothpaste containing at least 1,000 ppm fluoride, applied by a parent or carer. Children aged three to six use a pea-sized amount. From age seven, toothpaste containing 1,350 to 1,500 ppm fluoride is advised. Children aged nought to six giving concern because of caries risk receive the additional recommendation to use 1,350 to 1,500 ppm fluoride toothpaste. Brushing is twice daily, last thing at night and on one other occasion, with parental assistance matched to age and ability.
Worked example: A five-year-old assessed as giving concern because of caries risk should use a pea-sized amount of toothpaste, with the concentration chosen from the additional risk guidance recommending 1,350 to 1,500 ppm fluoride.
Mistake to avoid: Reducing the amount of toothpaste dispensed simply because a stronger fluoride concentration has been recommended for the child.
Reference: [11]
14. Sugar advice addresses amount, frequency and timing
Caries prevention advice should minimise both the amount and the frequency of sugar-containing foods and drinks. Sugar-containing foods and drinks should also be avoided at bedtime, when saliva flow is reduced and buffering capacity is lost. The bedtime recommendation is recorded as good practice in the table for children up to three but as conditional advice in the older age tables, so they differ.
Worked example: A child drinks small sugary drinks several times daily and has another after bedtime brushing. Advice targets the repeated exposure frequency and the bedtime timing alongside reducing the overall quantity consumed.
Mistake to avoid: Discussing only the total quantity of sugar in the diet while ignoring how often sugary items are consumed.
Reference: [11]
15. Select interdental aids according to available space
For all adults, and for young people aged twelve to seventeen with evidence of periodontal disease, advise daily interdental cleaning below the gum line before toothbrushing. Where there is space for an interdental or single-tufted brush, this should be used; for small spaces between teeth, dental floss or tape is advised. Aid selection should include demonstration of methods and types of aids, together with assessment of patient preferences, plaque removal abilities and confidence, so the chosen aid suits both the anatomy and the individual.
Worked example: One interdental space in an adult patient accommodates an interdental brush while an adjacent space is too tight. Advice assigns a brush where space permits and floss or tape for the small space.
Mistake to avoid: Recommending a single interdental aid for every site without first assessing whether it physically fits each space.
Reference: [11]
16. Ask, advise and act on tobacco use
At every opportunity, ask patients if they smoke and record smoking status as smoker, ex-smoker or never smoker, and also ask about smokeless tobacco using the names products are known by locally. Provide very brief advice following the ask, advise and act approach, and act on the patient response. Patients who want to quit should be referred to local stop smoking support, preferably where behavioural support and prescribed stop smoking medicines are available; this concept gives no prescribing regimen.
Worked example: A patient denies smoking but reports chewing paan regularly. The disclosure still leads to advice on smokeless tobacco health risks and an offer of referral to specialist cessation support services.
Mistake to avoid: Treating a question about smoked cigarettes as a complete tobacco history without also asking about smokeless products.
Reference: [11]
17. Implants require continuing preventive maintenance
Implant-supported restorations are maintained like natural teeth: daily cleaning around and between implants using toothbrushes and interdental aids, plus regular professional review of the surrounding gum and bone. This is preventive guidance for adults with implants; it does not provide a diagnostic or treatment protocol for peri-implant disease.
Worked example: An adult with a single implant-supported crown is advised to clean carefully around and between the implant using a toothbrush and appropriate interdental aids, and attends regular reviews of the health of the surrounding gum and bone rather than being discharged from prevention.
Mistake to avoid: Telling a patient that an implant replaces the tooth so interdental cleaning and gum and bone reviews are no longer needed.
Reference: [11]
Periodontal diagnosis and planning
18. Separate gingival inflammation from attachment loss
Under the 2018 Classification, on an intact periodontium, or one reduced for reasons other than periodontitis, health means fewer than 10 percent of sites bleed on probing with all probing depths of 3 mm or less, while gingivitis means 10 percent or more bleeding at such depths. These categories must not be applied as if a patient with historical periodontitis had never had periodontitis.
Worked example: A healthy adult with recession from overbrushing, giving a reduced periodontium unrelated to periodontitis, has six bleeding sites among 140 recorded, just over four percent, with every probing depth 3 mm or less, fitting the health category.
Mistake to avoid: Recording a bleeding percentage alone and calling it gingivitis or health without first checking whether attachment or bone loss has ever occurred.
Reference: [6]
19. Stage and grade do not establish current treatment need
In the UK implementation of the 2018 Classification, stage and grade record historical disease experience and indicate the likelihood of future risk. They carry no information about current treatment need, which depends on assessing disease activity, probing pocket depths and bleeding on probing, so management decisions require these separate findings.
Worked example: Two adults share the same stage and grade from past bone loss, yet one shows generalised bleeding and deepening pockets while the other is stable, so each has current need assessed individually rather than from staging alone.
Mistake to avoid: Reading a stage and grade as a fixed treatment prescription instead of assessing current disease activity, pocket depths and bleeding.
Reference: [6]
20. Structured periodontal risk assessment informs recall
Use a structured approach combining medical, dental and social history, relevant risk factors such as smoking, diabetes and pocket depth, and clinical examination findings to inform future treatment and recall, then explain the assigned risk to the patient. This recommendation is conditional with low-certainty evidence, risk assessment remains imperfect, and no universal numerical recall rule applies.
Worked example: A smoker with type 2 diabetes and two isolated 5 mm pockets is assessed using a documented structured tool covering history, risk factors and examination, and the resulting individual recall interval and risk-reduction steps are explained to her.
Mistake to avoid: Setting the recall interval from smoking status alone while overlooking diabetes control, pocket depths, social factors and examination findings.
Reference: [6]
21. Diabetes and periodontal inflammation can affect each other
Suboptimally controlled blood sugar levels can increase the risk of developing periodontitis or worsening existing periodontitis, and periodontal inflammation can in turn interfere with glycaemic control. Patients with diabetes therefore benefit from an explanation of this two-way relationship, and communication with the general medical practitioner should be considered where liaison would support the patient's overall care.
Worked example: A patient with type 2 diabetes presents with generalised bleeding gums. The dentist explains that glycaemic control can influence periodontal inflammation and vice versa, then considers contacting the general medical practitioner with the patient's agreement to support coordinated care.
Mistake to avoid: Describing diabetes as only a one-way cause of periodontal deterioration while overlooking that periodontal inflammation can also interfere with glycaemic control.
Reference: [6]
22. Periodontal tooth prognosis is dynamic
Tooth prognosis should be assessed using tooth-related factors such as bone support, furcation involvement, pulpal and periapical status, restorations and position, alongside patient-related factors including risk factors, preferences and access to support. Prognosis is an ongoing, dynamic process that should be reconsidered as treatment progresses, and strategic value matters because some severely affected teeth can often be retained successfully for many years.
Worked example: A mandibular molar with Stage III periodontitis and a furcation lesion has uncertain prognosis but provides valuable distal support. Retention is discussed with the patient, periodontal treatment proceeds, and the prognosis is reassessed at review in light of the response to therapy.
Mistake to avoid: Converting a single adverse clinical finding, such as furcation involvement, into an irreversible prognosis without reassessing the tooth during treatment.
Reference: [6]
23. Behaviour change requires capability, opportunity and motivation
The COM-B model proposes that a behaviour occurs only when capability, opportunity and motivation are all present, and these components influence one another. Clinicians can apply it, when the patient is ready to change, to identify specific barriers to periodontal self-care, considering clinician-side barriers too, rather than assuming every difficulty reflects unwillingness.
Worked example: A motivated patient cannot manipulate interdental brushes because of reduced hand dexterity. Using COM-B, the barrier is identified as physical capability rather than motivation, so the dental team provides adapted aids and further coaching instead of repeating encouragement the patient has already accepted.
Mistake to avoid: Labelling every unsuccessful attempt at oral self-care as poor motivation without first assessing whether capability or opportunity barriers explain the difficulty.
Reference: [6]
Pain, infection and prescribing safeguards
24. Antibiotics supplement appropriate local management
For bacterial dental infection, use local measures first and provide optimal analgesia. Consider antibiotics only when local measures have proved ineffective, or when there is cellulitis, spreading infection, systemic involvement, or a high risk of complications such as immunocompromise or uncontrolled diabetes. Antibiotics accompany rather than replace local measures, and a cellulitis-type swelling must not be drained, since it differs from drainable pus.
Worked example: A fit adult has a localised periapical abscess with swelling but no fever, lymph node involvement or spreading cellulitis. The tooth is drained by extraction, analgesia advice is given with safety netting, and no antibiotic is prescribed, since pain alone does not justify one here.
Mistake to avoid: Prescribing an antibiotic as a substitute for addressing the dental source, for example issuing a course instead of draining a drainable abscess.
Reference: [8]
25. Severe infection red flags change the destination of care
Red flag features such as significant trismus, floor-of-mouth swelling, breathing or swallowing difficulty and rapidly spreading cellulitis indicate severe or rapidly progressing spreading infection, so immediate emergency hospital transfer is required rather than local management alone. With airway compromise, for example Ludwig's angina or sepsis, calling 999 and providing necessary emergency care is appropriate. Immunocompromised patients warrant a lower threshold for secondary-care discussion and transfer.
Worked example: A patient returns with rapidly spreading cellulitis extending into the submandibular spaces and new difficulty swallowing. Rather than issuing another antibiotic course and booking routine follow-up, the dentist arranges emergency hospital transfer and records the assessments made beforehand.
Mistake to avoid: Prescribing or continuing an antibiotic and arranging routine review when red flag signs already indicate emergency hospital transfer.
Reference: [8]
26. Antibiotic review includes safety netting and reassessment
When an antibiotic is prescribed, record the diagnosis and reasons for prescribing in the notes, and give safety-net advice to make contact if symptoms worsen rapidly or significantly, fail to improve, or new symptoms appear. Review ideally happens at three days, earlier if particularly unwell, and severe infections preferably need in-person review. Resolution of systemic signs and symptoms at review can support advising cessation.
Worked example: Three days after starting an antibiotic for a facial swelling, a telephone review finds the fever and malaise have settled. Because systemic features have resolved at review, the patient can be advised to stop the remaining tablets under stewardship principles.
Mistake to avoid: Telling patients they must never contact the practice before the scheduled three-day review, which discourages earlier reassessment when symptoms deteriorate.
Reference: [8]
27. Inflammatory dental pain is not an antibiotic indication
Pain from irreversible pulpitis or a dry socket stems mainly from inflammation, so antibiotics should not be prescribed for it; analgesics and local measures are the appropriate management. Assess each patient separately for coexisting infection and its severity, because spreading infection, systemic involvement or high complication risk can justify antibiotics alongside, not instead of, local measures.
Worked example: A patient has severe pain from irreversible pulpitis but no fever, swelling or trismus. The dentist manages the inflammatory pain with appropriate local measures and suitable analgesia, and the intensity of the pain alone does not justify an antibiotic prescription.
Mistake to avoid: Prescribing antibiotics for excruciating pulpitis pain purely because the patient describes it as unbearable, without any evidence of infection.
Reference: [8]
28. Analgesia is temporary support for cause-directed care
Analgesics serve as temporary relief while the underlying cause of odontogenic pain is assessed and managed, and the choice depends on suitability for the individual patient, including contraindications, interactions and medical history. NSAIDs such as ibuprofen have anti-inflammatory activity, whereas paracetamol is effective for odontogenic or post-operative pain but has no demonstrable anti-inflammatory activity. No dosing regimens are taught here.
Worked example: A patient with acute pericoronitis gains partial relief from an analgesic chosen after checking her medical history, yet the underlying cause persists. Cause-directed assessment and management of the affected area are still arranged, since analgesia alone does not resolve the disease.
Mistake to avoid: Concluding that improved pain after analgesia means the underlying dental disease has resolved and deferring definitive cause-directed treatment.
Reference: [9]
29. NSAID suitability requires specific safety screening
Avoid NSAIDs in patients with previous aspirin- or NSAID-triggered hypersensitivity, including asthma, angioedema, urticaria or rhinitis precipitated by these drugs. Previous or active peptic ulcer disease also affects selection because all NSAIDs irritate the gastrointestinal tract. If an NSAID is required for such patients, the guidance describes proton pump inhibitor co-prescribing; gastroprotection does not cover hypersensitivity, and broader cautions still need screening.
Worked example: A dentally fit adult reports that ibuprofen previously caused facial swelling and wheeze. Prescribing paracetamol alone for her odontogenic pain and arranging definitive treatment of the tooth avoids NSAIDs entirely, without needing any gastric protection.
Mistake to avoid: Prescribing an NSAID with a proton pump inhibitor to a patient whose asthma attacks were triggered by aspirin.
Reference: [9]
30. Uncertain paracetamol ingestion requires emergency assessment
Unintentional paracetamol overdose can occur when patients with acute dental pain unknowingly combine preparations containing paracetamol. Emergency-department referral is directed for ingestion of 75 mg/kg or greater, either as a single acute dose or staggered across 24 hours, and also when dose timing or total amount ingested is uncertain. Appropriate recommended therapeutic dosing alone does not require referral.
Worked example: A patient with toothache took paracetamol tablets and later a cold remedy, losing track of how many tablets fell within the last day. Because the total intake cannot be reconstructed, emergency department assessment is arranged the same day.
Mistake to avoid: Assuming two differently branded products cannot both contain paracetamol, so combined use is automatically safe.
Reference: [9]
Surgical assessment and bleeding risk
31. Antiplatelet drugs and anticoagulants act at different stages
Antiplatelet drugs interfere with platelet aggregation, reversibly or irreversibly inhibiting steps in platelet activation needed for primary haemostasis. Anticoagulants instead inhibit production or activity of coagulation cascade factors, impairing secondary haemostasis. Both groups reduce clot formation through different mechanisms, so aspirin and warfarin both matter for bleeding assessment yet belong to different groups; mechanism alone does not determine dental medication management, which needs drug-specific guidance.
Worked example: During medical history taking, a patient mentions taking clopidogrel after a stent while her partner takes apixaban for atrial fibrillation. Both drugs are recorded as relevant to bleeding assessment, but they act on different haemostatic stages.
Mistake to avoid: Describing warfarin as a platelet inhibitor when explaining a patient's medication list to a colleague.
Reference: [10]
32. Bleeding likelihood and bleeding complications are distinct
First assess whether the required dental treatment is likely to cause bleeding, then categorise bleeding procedures by their risk of postoperative complications, meaning prolonged or excessive bleeding or bleeding not controlled by initial haemostatic measures. Extent and invasiveness matter, categories overlap for some procedures, and individual clinical judgment is required; the higher-risk label is relative within dentistry, not a description of major surgery.
Worked example: A treatment plan lists one simple extraction with a restricted socket and, separately, raising a flap for periradicular surgery on an adjacent tooth. The first sits in the low-risk category; the flap procedure needs a different assessment despite the same patient.
Mistake to avoid: Classifying bleeding risk purely by counting teeth, ignoring wound size and invasiveness of the procedure.
Reference: [10]
33. Bleeding history can reveal risk beyond the drug list
Bleeding risk assessment goes beyond the drug list: ask about previous prolonged bleeding, spontaneous bleeding, easy bruising, and episodes needing retreatment or hospital care, and about conditions affecting coagulation. Where medication or medical status is unclear, consult the prescribing clinician, who may be a haematologist or cardiologist rather than the general medical practitioner. This consultation does not authorise interrupting or altering antithrombotic medication.
Worked example: A patient awaiting dental extraction mentions a recent hospital admission for a clot and bruising easily, but cannot name the tablets. Non-invasive care is provided while the cardiologist, rather than the GP, is contacted to clarify the antithrombotic therapy before any surgical planning.
Mistake to avoid: Relying on recognising a drug name alone and skipping questions about previous bleeding episodes, bruising, or underlying conditions affecting coagulation.
Reference: [10]
34. Achieve local haemostasis before discharge
For patients taking anticoagulants or antiplatelet drugs, haemostasis should be achieved with local measures such as packing and suturing before discharge. Suturing and packing deserve serious consideration, weighed against factors including the medication, other bleeding-relevant conditions, and travel time to emergency care. Extended monitoring before discharge is advisable for remote and rural patients, and this planning principle requires appropriate skills and equipment.
Worked example: A patient on a direct oral anticoagulant undergoes a complex extraction in a rural practice where emergency services are distant. The socket is packed with a haemostatic agent and sutured, and the patient is observed for an extended period before being discharged home.
Mistake to avoid: Handing a patient written post-operative instructions and discharging them even though oozing continues and local haemostasis has not been achieved.
Reference: [10]
35. Third molar assessment includes neighbouring structures
Mandibular third molar assessment should include the condition and prognosis of the adjacent second molar, covering restoration, periodontal status, vitality and mobility. Temporomandibular disorders should also be excluded because they can cause preauricular pain resembling pericoronitis, and overlooking them risks an incorrect diagnosis and unnecessary surgery. This concerns assessment within the cited RCS guidance and does not teach surgical technique.
Worked example: A young adult presents with preauricular discomfort and a partially erupted lower third molar. Examination includes palpation of the temporomandibular joints and assessment of the second molar's restorations, periodontal state and mobility before any diagnosis or discussion of surgical options.
Mistake to avoid: Diagnosing pericoronitis and planning extraction simply because a mandibular third molar is visible, without excluding temporomandibular disorders or assessing the second molar.
Reference: [13]
Developing dentition and orthodontic planning
36. Hypomineralised molars may deteriorate after eruption
Molar-incisor hypomineralisation is characterised by demarcated, qualitative enamel defects affecting first permanent molars and variably the permanent incisors. Its aetiology remains incompletely understood, so no specific cause should be asserted. Post-eruptive breakdown of affected coronal enamel is common and can lead to sensitivity, increased caries risk and challenging restorative care, meaning apparently intact enamel does not guarantee a stable long-term prognosis.
Worked example: A child's first permanent molar shows a demarcated creamy-white opacity with normal contour but reports sensitivity to cold drinks. The treatment plan anticipates possible post-eruptive breakdown and rising caries risk, with review arranged rather than reassurance based on the present appearance.
Mistake to avoid: Judging a hypomineralised first permanent molar's long-term prognosis as secure because the newly erupted crown currently looks intact and symptom-free.
Reference: [14]
37. First permanent molar decisions need an occlusal plan
Elective extraction of a compromised first permanent molar should be considered within the child's overall situation and occlusion, ideally with input from both the general dental practitioner or paediatric dentist and a specialist orthodontist. Acute pathology may need urgent care first, and symptoms, prognosis, cooperation, service availability and family preferences all shape the shared decision.
Worked example: A nine-year-old has a comfortable but heavily restored first permanent molar with an uncertain prognosis. After stabilisation and orthodontic assessment of the developing dentition, the team discusses with the family whether the tooth can still serve a useful role before any elective extraction is planned.
Mistake to avoid: Planning extraction from the appearance of the single affected tooth alone, without assessing the occlusion, the child's wider circumstances or specialist orthodontic input.
Reference: [14]
38. Developmental stage matters more than an age shortcut
Plan interceptive first permanent molar extraction using dental development, second molar position and angulation, and third molar information rather than chronological age alone, because developmental age can differ markedly from chronological age. Radiographic predictors support but do not guarantee space closure, and delayed third molar development means non-visibility does not confirm permanent absence.
Worked example: Two children aged nine present with similar first molar breakdown. Radiographs show one child's lower second molar is upright with early bifurcation mineralisation while the other's is markedly tilted, so each child receives an individualised plan rather than the same extraction date.
Mistake to avoid: Treating a published age range as a complete treatment decision instead of assessing each child's dental development radiographically and independently.
Reference: [14]
39. Balancing and compensating extractions are different
A balancing extraction removes a first permanent molar on the opposite side of the same arch; a compensating extraction removes one in the opposing quadrant. Sound teeth should not be removed routinely for either purpose, since balancing to preserve a centreline and compensating for a sound upper molar both require specific occlusal justification within comprehensive orthodontic planning.
Worked example: A lower first permanent molar must be extracted. Removing the sound lower molar on the other side of the same arch would be balancing; removing the sound upper molar directly above would be compensating, and neither should be routine without clear occlusal justification.
Mistake to avoid: Assuming that labelling an extraction as balancing or compensating automatically justifies removing a sound tooth without orthodontic assessment.
Reference: [14]
40. Interceptive timing guidance has eligibility boundaries
The cited ideal-timing guidance does not apply when the second permanent molar is already erupted, when a recent panoramic radiograph is unavailable, or when acute symptoms cannot be temporised. These are exclusions from the interceptive pathway, not reasons to leave pain or infection untreated, and interceptive extraction remains a dynamic intervention requiring professional supervision and careful review.
Worked example: A child's lower second permanent molar is already fully in occlusion. The clinician explains that the ideal interceptive timing pathway cannot be used here to promise spontaneous mesial migration, so alternative options, including orthodontic input and restorative or extraction planning, are discussed with the family.
Mistake to avoid: Applying the ideal timing pathway outside its stated eligibility conditions, for example promising mesial migration when the second molar has already erupted.
Reference: [14]
Restoration and pulp preservation
41. Pulpotomy, pulpectomy and root canal therapy differ
The cited guidance distinguishes three procedures by how far instrumentation extends and what follows. A pulpotomy stays within the coronal pulp chamber. A pulpectomy extends into the root canal system. Root canal therapy, as defined in this child-caries guidance, means pulpectomy plus permanent restoration of the canals and crown, so a pulpectomy alone is not yet completed root canal therapy.
Worked example: A clinician removes coronal pulp from a vital primary molar and places a restoration over it without entering the canals. Because instrumentation stayed in the chamber, the record should describe a pulpotomy, and calling it completed root canal therapy would misstate what was done.
Mistake to avoid: Describing a pulpectomy as finished root canal therapy before the canals and crown have received permanent restoration.
Reference: [7]
42. Primary tooth management considers time to exfoliation
For a carious primary tooth, the guidance recommends choosing the least invasive feasible strategy, weighing time to exfoliation, lesion site and extent, pain or infection risk, presence of infection, tooth-structure preservation, number of teeth affected and avoidance of treatment-induced anxiety. Least invasive still means managed: infection or caries should not be left unmanaged, since a tooth nearing exfoliation can still cause pain.
Worked example: Assessment of a child with a carious primary incisor establishes that the tooth is mobile and close to natural exfoliation. The short remaining lifespan supports a least invasive feasible option, but the plan still manages the lesion because caries must not be left unmanaged.
Mistake to avoid: Predicting exfoliation timing from the child's age rather than assessing the individual tooth, then leaving the carious lesion unmanaged.
Reference: [7]
43. Irreversible symptoms do not automatically exclude pulpotomy
For a child or young person in pain from pulpitis in a vital tooth with irreversible symptoms and no evidence of dental abscess, the guidance says a pulpotomy may be considered to preserve the tooth and avoid extraction. Irreversible symptoms alone do not rule the procedure out, but vitality and absence of abscess must be confirmed first, with suitable assessment, consent and clinical competence.
Worked example: A cooperative twelve-year-old presents with a vital first permanent molar showing irreversible pulpitis symptoms and no abscess. After valid consent is obtained, a pulpotomy can be considered alongside extraction to preserve the tooth, rather than excluded because of the symptom pattern alone.
Mistake to avoid: Offering pulpotomy for a non-vital tooth or one showing abscess, extending the recommendation beyond its stated conditions.
Reference: [7]
44. Permanent tooth care protects lifetime prognosis
For caries in a child's permanent tooth, the guidance recommends the least invasive feasible strategy, considering lesion site and extent, pain or infection risk, preservation of tooth structure and pulp health, avoidance of treatment-induced anxiety, lifetime prognosis, orthodontic considerations and occlusal development. When managing a dentinal lesion, choose a technique that reduces the likelihood of pulpal exposure and maintains structural integrity.
Worked example: Two feasible techniques are compared for a dentinal lesion. The option more likely to preserve sound tissue and avoid pulpal exposure is favoured, because judging success only by the immediate restoration ignores the tooth's long-term survival and later treatment needs.
Mistake to avoid: Selecting an excavation approach that saves time now but sacrifices structural integrity and raises the chance of pulpal exposure.
Reference: [7]
45. Consider conservative alternatives before full coverage
For teeth that are minimally or moderately restored, adhesive restorations are generally the most appropriate option according to BSRD guidance updated in 2013. Crown treatment is a planning principle rather than a default, and its clinical advantages and long-term benefits should justify the biological cost and outweigh the disadvantages, considering remaining tissue, disease, function, patient wishes and operator competence.
Worked example: A 40-year-old presents with an otherwise sound molar holding a moderate occlusal composite that keeps fracturing. Before planning a full-coverage crown, the dentist reviews a ceramic onlay, which may restore the fractured margins while preserving substantially more sound tissue.
Mistake to avoid: Assuming that a larger preparation automatically provides a stronger or longer-lasting restoration, without weighing the biological cost to the tooth.
Reference: [15]
Fixed prosthodontics and laboratory communication
46. Identify why a prosthesis failed before replacing it
Replacement of failed crowns or bridges should be conditional on understanding the aetiology of failure and on successful preventive management of its causes. Preparatory care, undertaken where indicated, controls active disease and includes assessing the patient's response to initial treatment before definitive restoration is planned.
Worked example: A bridge fails after recurrent caries at a margin in a patient with high sugar intake. The team records the dietary cause, delivers preventive advice and non-surgical periodontal care, then reassesses disease control before deciding whether replacement is justified.
Mistake to avoid: Copying the design of a failed prosthesis without diagnosing why it failed, leaving the underlying cause of failure uncontrolled.
Reference: [15]
47. Bridge design must support function and cleaning
Tooth-supported fixed bridge design should be as simple and conservative as possible while still satisfying physical and mechanical requirements. It should enhance occlusal relationships and function yet minimise adverse loading, with particular attention paid to maintaining embrasure spaces so that the patient can clean the prosthesis effectively.
Worked example: A three-unit anterior bridge is drawn with bulbous pontic contours that close the interdental spaces. Although retention and appearance seem acceptable, the design is reconsidered so that floss and interdental brushes may reach the gingival areas around the pontic.
Mistake to avoid: Judging a proposed bridge only by its appearance and retention while ignoring contours that block interdental cleaning access.
Reference: [15]
48. Provisional restorations can test proposed changes
Provisional restorations restore, protect and maintain the position of prepared teeth between appointments and until placement of the final restoration. When a significant change in form or function is planned, a diagnostic wax-up can provide an index for provisionals, allowing assessment of the patient's response before definitive construction.
Worked example: A patient is to have the incisal edge position of worn upper incisors increased. A wax-up guides an index for provisional crowns, and the patient wears them so that comfort, speech and appearance can be assessed before the definitive restorations are made.
Mistake to avoid: Treating provisional restorations as disposable placeholders rather than as diagnostic tools that require accurate margins and occlusion.
Reference: [15]
49. A laboratory prescription communicates the design
A prescription communicates the design precisely: teeth or implants by notation, prosthesis type, design features including margin and occlusal contact materials, shades, surface finish, the alloy or other materials, and occlusal registrations provided. Labelled diagrams with casts, wax-ups and provisional impressions help, and clinician-technician liaison reduces omissions, though these items supplement the wider case details a complete prescription also carries.
Worked example: For a three-unit bridge, the prescription names the abutment teeth in notation, specifies the alloy and ceramic, describes the connector dimensions and occlusal contact material, records the shade, and includes a labelled diagram of the desired embrasure and pontic form.
Mistake to avoid: Sending a request card that simply asks for a crown, leaving the notation, material, margin and occlusal design for the technician to infer.
Reference: [15]
50. Investigate an unsatisfactory try-in before modifying
Try-in assesses seating and marginal adaptation, contacts with adjacent and opposing teeth, form, aesthetics, function including pontic design, and the patient's comfort and acceptance of appearance. If a crown or bridge is unsatisfactory, the cause must be identified before any modification or remake is undertaken. This remains an assessment principle rather than material-specific adjustment guidance.
Worked example: A bridge at try-in appears proud on one margin and the patient reports pressure nearby. The clinician distinguishes a marginal snag from a binding proximal contact using the casts and assessment, before deciding whether adjustment or remake is appropriate.
Mistake to avoid: Repeatedly grinding a tight contact without first establishing whether seating, the margin or the contact itself is causing the problem.
Reference: [15]
Radiography and decontamination
51. Third molar imaging should answer a management question
After history and clinical examination, panoramic radiography is indicated when third molar surgery is being considered, and routine screening of unerupted molars is not recommended. CBCT is not routine because dose and cost are higher with no demonstrated outcome benefit; it may help when conventional imaging shows a close canal relationship and the findings would alter management.
Worked example: A panoramic radiograph taken before listing a patient for mandibular third molar surgery suggests the inferior dental canal overlaps the roots. Because further detail could change the planned surgical approach, CBCT is considered; an asymptomatic molar not requiring surgery receives no screening image.
Mistake to avoid: Ordering CBCT automatically for every mandibular third molar assessment, even when conventional imaging shows no close relationship with the inferior dental canal.
Reference: [13]
52. Radiation risk assessment must reflect the actual setting
The radiation risk assessment must describe exactly how work with dental X-ray equipment is carried out at the practice, with findings used to determine protective measures, working instructions and contingency plans. When portable equipment is used at unfamiliar premises, protection arrangements are reviewed at the first visit, with a dynamic case-by-case assessment of aspects likely to change between sites, with radiation protection adviser input.
Worked example: A clinician takes a hand-held X-ray set to a housebound patient's home for the first time. Before exposing, the team reviews that setting's controlled area, equipment security during transport and use, and local arrangements, rather than assuming the surgery assessment transfers unchanged.
Mistake to avoid: Filing an unaltered generic template as the completed risk assessment and assuming it covers radiography at every location the equipment is used.
Reference: [16]
53. Decontamination responsibilities require defined roles
Under England's HTM 01-05, everyone involved in decontamination must be suitably trained, with roles and responsibilities defined and understood by all team members. The User manages day-to-day equipment and processes and must ensure that any Operator is trained and competent, not merely permitted to press buttons. Local titles may differ, and one person may hold several roles.
Worked example: In a small practice, the nurse who runs the sterilizer daily also acts as the User. Even though one person fills both roles, her Operator competence is formally assessed and recorded, and her dual responsibilities are written into the practice decontamination policy.
Mistake to avoid: Assuming that a staff member who has been shown the machine once is therefore competent to operate and test it.
Reference: [17]
54. A completed cycle is only one part of a satisfactory test
In England HTM 01-05's automatic control test, a cycle-complete display alone is insufficient. The test is satisfactory only when recorded parameters stay within manufacturer or validation limits, hold-period temperatures sit in the appropriate band for the required time, the door interlock prevents opening before completion, and no anomaly is observed. Only fully trained people should attempt the door-interlock check, since safety devices may malfunction.
Worked example: A benchtop sterilizer finishes its cycle and displays complete, but the printout shows the hold temperature dipped briefly below the validated band. Because a recorded parameter fell outside limits established by validation, the automatic control test is recorded as unsatisfactory and the engineer is contacted.
Mistake to avoid: Recording a periodic test as passed purely because the machine displayed cycle complete, without checking the process data.
Reference: [17]
Records, ethics and clinical leadership
55. Confidential use requires purpose and proportion
Patient information learned professionally must be kept confidential and used only for the purpose for which it was given. For teaching, research or photographs, explain the proposed use, check understanding, obtain and record consent, release only the minimum information necessary, and tell patients they may withdraw permission at any time.
Worked example: A patient consents to a clinical photograph being used in a study day presentation. The dentist crops the image so only the relevant tooth is shown, records the agreed purpose in the notes, and explains that consent can be withdrawn at any time.
Mistake to avoid: Believing that signed consent for an extraction also covers showing the case photographs at a conference.
Reference: [5]
56. Records should make decisions and amendments traceable
Records must be contemporaneous, complete and accurate, and identify the treating clinician by name or initials. Amendments must be clearly marked and dated so the original entry remains traceable. Referrals must be recorded accurately, and discussions with colleagues about treatment, including decisions reached or changed, should be documented in the notes.
Worked example: After discussing a restorative plan with a colleague, the dentist records the advice and the agreed revised plan in the notes. A week later she notices a wrong tooth number, so she clearly marks the correction and dates it rather than deleting the entry.
Mistake to avoid: Deleting an incorrect entry and retyping it so the amendment leaves no dated trace in the record.
Reference: [5]
57. A task requires more than theoretical familiarity
Under GDC guidance, a registrant may carry out a task or type of treatment only when appropriately trained, competent, confident and indemnified, working within mental and physical capabilities. Theoretical familiarity with procedure steps does not by itself satisfy these requirements, and a registrant who lacks confidence to provide a treatment must refer the patient to an appropriately trained colleague.
Worked example: A dentist who has read the manufacturer's instructions for a new restorative technique but has attended no hands-on training decides against attempting it and refers the patient to a colleague who has completed supervised training in that technique.
Mistake to avoid: Treating familiarity with the written steps of a procedure as sufficient evidence of being trained, competent and confident to perform it.
Reference: [5]
58. Recommendation strength and evidence certainty differ
In Delivering Better Oral Health, recommendation strength and evidence certainty are distinct. A conditional recommendation reflects the Guideline Development Group being less confident, either because evidence certainty is low or very low or because the balance between benefits and harms is unclear; it does not mean the intervention is ineffective. Good practice points rest mainly on consensus, expert opinion and extrapolation from related research.
Worked example: When planning preventive care for an adult with high caries risk, a clinician reads that a recall-interval recommendation is graded conditional, discusses it with the patient alongside individual risk factors, and does not dismiss the advice as unsupported or ineffective.
Mistake to avoid: Reading the label conditional on a recommendation as though it meant the intervention had been shown not to work.
Reference: [11]
59. Raise patient safety concerns promptly
Concerns about patient risk must be acted on promptly, and a concern need not be proved before it can be investigated. Protect patients immediately when the concern arises, while reporting proceeds. Where possible raise it first with the employer or manager, but escalate through an appropriate alternative route when local reporting is unsuitable or ineffective, and follow safeguarding procedures for suspected abuse or neglect.
Worked example: A dental nurse notices erratic steriliser behaviour and immediately pauses care relying on that equipment, arranging safe alternatives, while reporting to the practice manager at once. When the manager fails to act, the nurse promptly escalates through an appropriate external body, maintaining the protective measures.
Mistake to avoid: Waiting days for managerial action before pausing affected care, demanding proof first, or bypassing local reporting because the manager helped buy the equipment.
Reference: [5]
60. Leadership makes raising concerns workable
A registrant who employs, manages or leads a team must promote an open culture in which staff can raise concerns without fear of reprisal, supported by written procedures that are readily available. Once a concern is raised, it must be taken seriously, investigated promptly and impartially, kept confidential where appropriate, and the raiser kept informed while any corrective action is monitored.
Worked example: After a trainee reports that a handpiece is repeatedly cutting out mid-procedure, the practice owner logs it, arranges an unbiased check of the equipment, tells the trainee what has been done, and later confirms with the team that the replacement has stopped the fault.
Mistake to avoid: Assuming that publishing a written raising-concerns policy satisfies leadership duties while reported concerns are left without investigation, feedback or follow-up.
Reference: [5]
Sources
- Archived MJDF Examination Syllabus for Candidates, 2018
- Archived RCS England MJDF Regulations, 2018: Foundation-Training Competencies and Assessment Structure
- RCS England: New MFDS Exam to Replace MJDF, 4 November 2019
- RCS England MJDF Statement, December 2020: Immediate End of Further Part 2 Diets
- GDC Standards for the Dental Team: Consent, Communication, Confidentiality, Complaints and Professional Responsibilities
- SDCEP Prevention and Treatment of Periodontal Diseases in Primary Care, Second Edition, Amended November 2025
- SDCEP Prevention and Management of Dental Caries in Children, Third Edition: Guidance in Brief
- SDCEP Drug Prescribing for Dentistry: Bacterial Infections, Updated May 2026
- SDCEP Drug Prescribing for Dentistry: Odontogenic Pain—Analgesic Selection, Contraindications and Overdose
- SDCEP Management of Dental Patients Taking Anticoagulants or Antiplatelet Drugs, Second Edition
- Delivering Better Oral Health: Age- and Risk-Based Preventive Guidance Tables for Dental Teams, Updated September 2025
- NICE NG12 Suspected Cancer: Recognition and Referral—Head and Neck and Oral Cancer Recommendations
- RCS England Parameters of Care for Patients Undergoing Mandibular Third Molar Surgery, Version Edited May 2021
- RCS England Guideline for the Extraction of First Permanent Molars in Children, 2023: Timing and Orthodontic Planning
- British Society for Restorative Dentistry Guidelines: Crowns, Fixed Bridges and Dental Implants, Updated 2013 and Listed by RCS England
- PHE and FGDP(UK) Guidance Notes for Dental Practitioners on the Safe Use of X-Ray Equipment, Second Edition, 2020
- England HTM 01-05: Decontamination in Primary Care Dental Practices, 2013 Edition