Use these selected concepts to connect clinical findings with patient-centred decisions and technical assessment. Each focuses on a useful distinction, an original worked example and a specific mistake to avoid. Read them alongside the official ADC handbook and develop procedural skills through appropriate instruction and supervised practice.
Person-centred communication and professional judgement
1. Patient priorities shape shared decisions
Clinical findings establish what care is possible, but the patient's views, circumstances and preferences determine which suitable option proceeds. Shared decision-making means presenting reasonable alternatives with their benefits, limitations and uncertainties, then recording the agreed plan. The practitioner still holds responsibility for recommending appropriate care and for declining options that fall below acceptable standards.
Worked example: A written case describes a patient with a fractured restoration who wants the tooth kept; the plan records three viable options with their limitations, and the patient chooses a crown after the discussion.
Mistake to avoid: Booking a complex extraction list before asking the patient whether they wish to explore less invasive alternatives for the tooth.
Reference: [3]
2. Adapt explanations to the patient's understanding
When discussing periodontal disease, risk factors, treatment options and likely outcomes, first gauge what the patient already understands, then adjust vocabulary, pace and format to suit them. Simplified language must still convey the clinical meaning and any uncertainty, and the clinician clarifies whenever the patient's responses show the explanation has not been understood.
Worked example: In a mock consultation the candidate notices the patient cannot describe what a BPE involves, so the assessment is re-explained using a simple gum-health score, and the patient then summarises it correctly.
Mistake to avoid: Repeating an unchanged technical explanation about probing depths after the patient has already said the terms are unfamiliar.
3. Coordination supports continuity of care
A suitable management plan can extend beyond the chairside visit, including arranging investigations and liaising with other treating practitioners such as a medical practitioner. Coordination means recording who was contacted, what information was sought, and how ongoing care continues, while any information shared between practitioners remains subject to the patient's confidentiality.
Worked example: A case scenario requires medical clarification about a patient's medication before periodontal treatment; the plan documents contacting the medical practitioner with consent, then schedules the next dental review explicitly.
Mistake to avoid: Sending a referral letter and then recording no follow-up arrangement or check that the specialist actually received the patient.
Reference: [3]
4. Cultural awareness begins with reflection
Cultural awareness starts with the practitioner examining their own beliefs and assumptions, then respecting the beliefs and cultures of patients. Differences can shape the practitioner-patient relationship and how services are provided, so individual preferences are explored through open questions during the consultation rather than assumed from the patient's background or community identity.
Worked example: During a simulated history, the candidate asks the patient what matters to them about proposed care and records the answer, instead of predicting preferences from the patient's stated background.
Mistake to avoid: Assuming a patient will refuse certain treatment options because of their cultural background without asking them directly.
Reference: [3]
5. Consent discussions continue as treatment develops
For developing-dentition care, informed decision making involves the patient and parent in planning, discussing existing problems, options, alternatives and expected outcomes at the start and again as treatment progresses. This is pediatric practice guidance, not a statement of Australian consent law. When new findings alter the plan, revised options and outcomes should be discussed before proceeding.
Worked example: During a mid-treatment review of a mixed-dentition crossbite case, radiographs reveal an ectopically erupting premolar, so the clinician revisits the goals with the child and parent, explaining revised options, alternatives and likely outcomes before any plan change proceeds.
Mistake to avoid: Treating the initial consent discussion as complete and proceeding with a changed plan without revisiting options and outcomes.
Reference: [8]
6. A companion is not automatically a substitute decision maker
Substitute decision makers matter only when a patient lacks capacity to decide; they may be parents, guardians, a nominated person or a legally appointed decision maker. A companion's presence alone does not establish incapacity or settle decision-making authority, so uncertainty about who may decide should prompt advice from the relevant guardianship authority rather than accepting the accompanying person's assertion.
Worked example: An adult with mild cognitive impairment attends with an adult daughter who states she will decide about extractions; the clinician first assesses the patient's own capacity and, remaining uncertain about authority, contacts the guardianship authority for advice before proceeding.
Mistake to avoid: Accepting an accompanying relative's claim to decide for the patient without assessing capacity or establishing that person's authority under applicable requirements.
Reference: [3]
7. Conduct guidance does not supply clinical protocols
The shared code of conduct sets expectations for professional behaviour but does not establish clinical practice standards for individual health disciplines, and it does not replace legislation. Clinical decisions require discipline-specific guidance and professional judgement; the code supports respectful communication, while a specific trauma decision is assessed using applicable trauma guidance.
Worked example: When planning restoration of a cracked molar, the practitioner applies the code's expectations for honest, patient-centred communication, but justifies the restorative technique and material choice from current dental clinical guidance rather than from the conduct code itself.
Mistake to avoid: Citing a general professionalism principle from the conduct code as proof that a particular treatment technique is clinically indicated.
Reference: [3]
Clinical information gathering and imaging
8. A relevant history extends beyond the presenting tooth
Clinical assessment takes a history that includes relevant psychological, social and cultural aspects alongside medical and dental history, and it should remain relevant to the patient and proposed care. Periodontal guidance adds that all details of the patient's history must be brought up to date at each recall appointment, so changed medical or social circumstances are recorded rather than carried forward unchanged.
Worked example: At a six-month review for a patient whose chief complaint of sensitive teeth is unchanged, the practitioner records a new family bereavement, altered alcohol intake and a recently started medication, updating the psychological, social and medical history before examination.
Mistake to avoid: Recording only the presenting dental complaint at recall while leaving psychological, social, cultural and medical history details unchanged from the previous visit.
9. Medication history includes planned and non-prescribed medicines
When taking or confirming a medical history, ask about current or planned use of anticoagulants or antiplatelet drugs and also about other prescribed and non-prescribed medicines, because self-medication can affect bleeding. This assessment principle informs history-taking only; it does not authorise interrupting medication or supply a drug-specific schedule.
Worked example: Before scheduling an extraction, the candidate asks about prescribed medicines and separately about over-the-counter analgesics and herbal products the patient takes or plans to take, then records all answers in the history without altering any medication.
Mistake to avoid: Recording only the prescribed medicine list and overlooking over-the-counter analgesics or herbal products the patient self-medicates with regularly.
Reference: [12]
10. Previous bleeding contributes to procedural risk assessment
Bleeding assessment includes asking about previous prolonged or spontaneous bleeding, easy bruising, and conditions such as kidney or liver disease or bone marrow disorders that can affect coagulation and platelet function. Previous bleeding responses inform individual risk assessment but do not provide a certain prediction of future bleeding.
Worked example: A patient describes prolonged bleeding after a previous extraction that required a return visit for haemostasis; the candidate records this history and completes a fuller bleeding assessment before planning another invasive procedure, without advising any medication change.
Mistake to avoid: Assuming the medication name alone captures all bleeding risk and skipping questions about previous bleeding episodes or easy bruising.
Reference: [12]
11. Adult mucosal examination combines inspection and palpation
A clinical oral examination for adults aged eighteen and over combines systematic extraoral and intraoral visual inspection under white light with palpation, and its purpose is explained to the patient. Absence of recognised cancer risk factors does not exclude oral potentially malignant disorders or cancer, so vigilance applies in all patients.
Worked example: For a new adult patient who has never smoked and reports no risk factors, the candidate still performs a systematic extraoral and intraoral examination using inspection and palpation, and explains the purpose of the examination before beginning.
Mistake to avoid: Limiting the examination to the symptomatic tooth and omitting systematic extraoral and intraoral inspection and palpation in a patient without recognised risk factors.
Reference: [11]
12. Clinical records support continuity and confidentiality
Clinical records should be made contemporaneously at each appointment, be specific to the patient, and be written in language others involved in care can understand, supporting effective shared care. Records remain confidential and secure; the Scottish source's GDPR provisions describe that jurisdiction and are not Australian legal requirements.
Worked example: At the end of a visit, the candidate records the findings, the discussion and the individualised agreed plan in clear language at that same appointment, stores the notes securely, and limits access so the patient's confidentiality is protected.
Mistake to avoid: Writing vague notes containing unexplained abbreviations days after the appointment, leaving another treating practitioner unable to follow the reasoning or plan.
13. Structured periodontal risk assessment informs ongoing care
A structured risk assessment combines the patient's medical, dental and social history, relevant risk factors and clinical examination findings to inform treatment planning and recall intervals. SDCEP frames this as a conditional recommendation based on low-certainty evidence, acknowledging that risk assessment remains an imperfect science, so the resulting risk level guides care without predicting certain tooth loss.
Worked example: A clinician reviewing a patient with controlled diabetes, a former smoking habit, three localised 6 mm pockets and localised bone loss weighs all findings together when setting an individualised recall interval, noting the assigned risk level remains an estimate rather than a certain prediction.
Mistake to avoid: Assigning a patient to a high-risk category and then telling them tooth loss is inevitable without explaining the uncertainty.
Reference: [7]
14. Periodontal screening does not replace detailed assessment
BPE is a rapid screening tool indicating which sextants need further investigation, not a diagnosis. Where recession or attachment loss is present, detailed periodontal charting is required, and treatment must not rest on the screening score alone. Adult sextant-based screening and the simplified index-tooth protocol for children and adolescents serve different purposes and are not interchangeable.
Worked example: An adult presenting with generalised recession and documented attachment loss receives a full six-point pocket chart with recession measurements and bleeding scores despite recording mostly code 2 sextants at screening, because the visible recession itself justifies detailed assessment independent of the numeric codes.
Mistake to avoid: Recording the highest sextant code in the notes and proceeding directly to treatment without any detailed charting.
Reference: [7]
15. Describe periodontal bone loss by pattern and distribution
Radiographic reporting of periodontal bone loss should state whether the pattern is horizontal or angular, including infrabony defects, and describe distribution as localised or generalised only where views of multiple teeth are available. Percentage bone loss relative to root length can be recorded when the apex is visible. An isolated image limits distribution statements.
Worked example: A clinician reporting a periapical view of a lower molar documents an angular defect affecting roughly forty percent of root length at that site and notes that whole-mouth distribution cannot be determined from this single image.
Mistake to avoid: Writing bone loss present in the report without stating the pattern or acknowledging the limits of the available views.
Reference: [7]
16. Justify radiographs using the clinical question
Imaging follows a thorough clinical examination and is selected to answer specific diagnostic questions for each patient. Before exposing the patient again, a good-faith effort should be made to retrieve and review usable previous radiographs. The ADA guidance recommends digital receptors over conventional film for reduced exposure, and these selection principles are recommendations rather than regulations.
Worked example: A new patient brings a panoramic image taken eight months earlier that shows the crestal bone levels relevant to the current query, so the clinician reviews it first and requests only a targeted periapical view of one tooth where the earlier image left diagnostic doubt.
Mistake to avoid: Exposing every new patient to a full mouth series purely because no previous records exist within the practice.
Reference: [10]
17. Digital imaging can still produce exposure creep
Digital receptors generally require less radiation than film, but image noise can tempt operators to raise exposure, producing gradual dose increases known as exposure creep. Dose optimisation remains necessary with digital acquisition; exposure should suit the receptor, patient and diagnostic task rather than being increased merely to make images look smoother, and manufacturers build tools to improve detector sensitivity without raising dose.
Worked example: A candidate finds a periapical image diagnostically adequate but visibly grainy and considers raising exposure for a smoother appearance. The candidate retains the setting, verifies receptor positioning and available software tools, and documents that the existing exposure answers the diagnostic question.
Mistake to avoid: Raising an already diagnostically adequate digital exposure solely because the image looks noisy, treating digital receptors as removing dose optimisation duties.
Reference: [10]
Diagnosis and management planning
18. Periodontal diagnosis requires more than one sign
When further periodontal examination is indicated, probing depths and bleeding on probing from the pocket base should be recorded, and recession, furcation involvement, mobility and plaque or gingival indices should also be recorded at baseline when an initial periodontitis diagnosis is made. Bleeding alone prompts fuller assessment; assigning a current stage or grade requires the applicable classification criteria and sufficient findings.
Worked example: A candidate charts bleeding at several sites, then records probing depths with bleeding from the pocket base, recession, furcation involvement, mobility and plaque indices at baseline. The candidate explains that bleeding indicates inflammation requiring fuller pocket, attachment and bone assessment before any classification is considered.
Mistake to avoid: Recording only bleeding scores and then assigning a periodontitis stage without recording probing depths, attachment or bone findings at baseline.
Reference: [7]
19. Occlusal trauma and periodontitis are different processes
Occlusal trauma is a distinct process from periodontitis; the guidance states it does not cause periodontitis, although in some circumstances it may accelerate periodontal bone loss or increase tooth mobility. Where teeth drift or become mobile, occlusal examination helps investigate causes and inform management. Occlusal examination and therapy can be complex, so periodontal or prosthodontic specialist referral may be necessary.
Worked example: For a mobile, drifting lower incisor, a candidate charts probing depths, attachment levels and radiographic bone findings, and tests for fremitus. Because these findings do not yet establish the bone loss cause, the candidate keeps periodontal and occlusal contributions under review and considers specialist referral.
Mistake to avoid: Telling a patient that a high bite caused the periodontitis and planning occlusal adjustment alone without periodontal assessment or referral.
Reference: [7]
20. Approximal preparation follows the simulated caries extent
The ADC approximal resin composite preparation rubric awards optimal marks for occlusal outline, bucco-lingual box width and axial depth when each is based on the extent and location of the simulated caries. Over-extension of sound tooth structure is penalised in graded increments, so preparation size should follow the specified lesion rather than a uniform template applied to every task.
Worked example: Two simulated approximal lesions in practice tasks have different bucco-lingual extents. A candidate prepares each box to the width its specified lesion requires, keeping the smaller lesion's outline conservative, and avoids extending either cavity beyond the caries extent and location described in the task.
Mistake to avoid: Preparing every approximal task to an identical outline and depth regardless of the specified lesion's extent and location.
Reference: [1]
21. Referral follows patient need and competence limits
Practitioners must recognise where their skills and competence end and refer when another practitioner can better serve the patient's interests. Referral depends on individual clinical judgement rather than patient preference alone. The reasons should be explained to the patient, and continuing care coordinated so the handover maintains follow-up. Declining unfamiliar treatment, even when requested, protects patient safety.
Worked example: A dentist confident in routine restorative care is asked to manage a patient needing preprosthetic surgery; recognising this exceeds current competence, the dentist explains why, refers to an oral surgeon, and retains responsibility for ongoing prosthetic follow-up so care remains coordinated.
Mistake to avoid: Proceeding with a complex procedure outside one's training because the patient prefers not to travel to a specialist.
Reference: [3]
22. Procedure invasiveness changes bleeding assessment
For patients taking antithrombotic medication, bleeding risk is assessed for each proposed procedure according to its extent and invasiveness, not its broad label. SDCEP's low and higher categories describe dental bleeding complications, overlap exists for some procedures such as flap raising, and individual judgement about confidence in managing peri-operative bleeding remains essential.
Worked example: A patient taking an anticoagulant attends for root surface debridement, assessed as lower bleeding risk; during the visit the dentist identifies that peri-radicular surgery is also needed, a flap-raising procedure, so bleeding risk is reassessed for the more invasive treatment rather than the earlier judgement being retained.
Mistake to avoid: Carrying a low-risk bleeding judgement across all procedures at one visit for an anticoagulant-treated patient.
Reference: [12]
23. Persistent unexplained mucosal abnormalities require escalation
In adults, an oral mucosal abnormality persisting beyond ten to fourteen days after initial evaluation, without a definitive diagnosis or treatment plan, warrants biopsy or specialist referral. The interval never justifies delaying assessment of a clinically concerning lesion, and only clinicians trained in biopsy should perform one.
Worked example: An adult returns fourteen days after a labial mucosal lesion was first evaluated; it persists without a recorded diagnosis or treatment plan, so the practitioner, who has no biopsy training, refers promptly to an oral medicine specialist instead of extending observation.
Mistake to avoid: Booking further routine review of an unresolved lesion without documenting a diagnosis, a treatment plan, or escalation.
Reference: [11]
24. Negative cytology cannot overrule a persistent lesion
Cytology is a conditional fallback for adults when biopsy is not possible, advisable or indicated, and rests on low-certainty evidence. A negative result informs but never replaces diagnostic biopsy. When an abnormality persists or progresses despite negative cytology, the guideline pathway requires immediate biopsy or specialist referral.
Worked example: Cytology is offered as a fallback for a clinically worrisome floor-of-mouth lesion in an adult for whom biopsy is not immediately possible; the result is negative, but at follow-up the lesion persists, so the practitioner arranges immediate specialist referral for biopsy rather than relying on the test.
Mistake to avoid: Treating a single negative cytology result as definitive proof that a persistent mucosal abnormality is benign.
Reference: [11]
25. Choose CBCT for a justified unanswered question
CBCT is considered when clinical judgement indicates lower-exposure options would not provide the necessary diagnostic information; judging whether conventional views will answer the question does not require taking every potentially unhelpful view. The guiding test is whether the image is likely to change management of the injury. Relative exposure depends on the examination and protocol, so CBCT is not ranked above or below two-dimensional imaging without those details.
Worked example: An adult presents after an elbow strike with a suspected root fracture; after judging that appropriate periapical and occlusal views are unlikely to resolve the fracture's location and extent, CBCT is considered because its findings could alter splinting decisions.
Mistake to avoid: Exposing a patient to every potentially unhelpful conventional view before CBCT, or asserting a dose ranking without specifying the examination and protocol.
26. Nonopioid analgesia is the first-line starting point
The 2024 ADA-endorsed guideline for adolescents, adults and older adults positions nonopioid medicines as first-line therapy for acute dental pain after extractions and for temporary toothache relief, with opioids reserved for insufficient first-line response or NSAID contraindication. This is supplementary American guidance, not an Australian prescribing authorisation; individual history, medicines and contraindications must be reviewed first.
Worked example: Before discussing pain control with an adult after a surgical extraction, the practitioner reviews medical and social history and current medicines, then presents suitable nonopioid options first, explaining that opioids are considered only if these prove insufficient or are contraindicated.
Mistake to avoid: Assuming that greater reported pain automatically justifies an opioid, or issuing routine just-in-case opioid prescriptions without reviewing history and current medicines.
Reference: [13]
Restorative and endodontic technical principles
27. Approximal preparation margins have task-specific requirements
The ADC approximal resin composite preparation rubric sets separate, task-specific requirements: the gingival floor must clear the contact, internal line angles must be rounded, the cavo-surface margin must be smooth, and the margin design must have no bevel. These descriptors belong to this specified typodont task, not to every composite cavity, and each criterion is assessed independently of the others.
Worked example: During a mock examination, a candidate produces a smooth, unbevelled cavo-surface margin with rounded line angles, yet the gingival floor still contacts the adjacent tooth; achieving an excellent margin finish does not compensate for that separate clearance deficiency in the rubric.
Mistake to avoid: Applying a bevel out of habit from another restoration type, or judging margin smoothness while overlooking whether the gingival floor clears contact.
Reference: [1]
28. Metal ceramic crown margins vary by surface
In the ADC simulated metal ceramic crown rubric, the very-good margin-width descriptor is 1.2 mm buccally and 0.5 mm lingually. Margin position (0.5 mm supragingival) and margin form (smooth, continuous, identifiable) are assessed separately, so a correct width on one surface does not establish correct position, continuity or widths elsewhere.
Worked example: A candidate prepares a crown with 1.2 mm margins buccally and lingually. The buccal width meets the very-good descriptor, but the 1.2 mm lingual margin exceeds the 0.5 mm lingual target, so equal widths do not satisfy both criteria.
Mistake to avoid: Applying the buccal margin-width target to every surface, or assuming correct width also establishes correct margin position and continuity.
Reference: [1]
29. Canal access and wall flare are separate outcomes
The endodontic access rubric lists straight-line canal access and flare of preparation walls as separate observation rows. Straight-line access is judged by whether all canals can be reached without obstruction, while flare is judged on its own scale from optimal to excessively flared. Widening walls beyond what access requires can therefore move the flare result toward excessive without improving access.
Worked example: In a simulated endodontic access task, a candidate removes additional internal tooth structure to widen the cavity, yet one canal orifice remains partially obstructed by a retained pulpal horn, so the access criterion is still not met despite the increased flare.
Mistake to avoid: Treating a larger or more flared access cavity as proof of satisfactory canal access instead of checking each canal separately.
Reference: [1]
30. Crown reduction preserves anatomical form and material space
The metal ceramic crown rubric assesses reduction anatomy and reduction amount as distinct rows. Uniform reduction that reflects anatomy is judged separately from occlusal reduction that allows full occlusal ceramic coverage, with the stated 2.0 mm descriptor applying to this task. A preparation can reach the stated clearance while losing occlusal anatomy, so meeting one measure does not establish the other.
Worked example: A candidate prepares a tooth for a metal ceramic crown and achieves the stated 2.0 mm occlusal clearance, but the occlusal surface is flattened with lost anatomical form, so the reduction-anatomy result differs from the clearance result.
Mistake to avoid: Equating adequate occlusal clearance with a satisfactory preparation, without checking that the reduction still follows the tooth's anatomical form.
Reference: [1]
31. An intact composite can still fail the curing criterion
The anterior and posterior composite rubrics record restoration integrity and resin curing as separate observations. Integrity asks whether the restoration is present and intact, while curing asks whether the resin is fully cured, with uncured resin recorded as a defect. An unfractured restoration therefore cannot by itself demonstrate acceptable cure, because a curing fault is assessed on its own row.
Worked example: In a posterior composite task, a candidate's restoration remains present and unfractured at assessment, but the examiner identifies uncured resin on the surface, so the curing observation is recorded separately from the intact integrity result.
Mistake to avoid: Inferring that the resin is fully cured from the restoration's presence or intact appearance, ignoring the separate curing observation.
Reference: [1]
32. Anterior incisal height and functional position differ
The anterior composite rubric assesses incisal edge height and incisal angle position as separate rows. Height is judged by how far the edge sits over or under a reference, while angle position asks whether the incisal angle is in functional occlusion or could be adjusted there without replacement. A restoration with acceptable edge height can still have an incisal angle outside functional occlusion.
Worked example: A candidate completes an anterior composite whose incisal edge height falls within the acceptable range, but the labio-palatal incisal angle is incorrectly positioned, so the angle result is recorded separately and the height result does not confirm functional position.
Mistake to avoid: Assessing an anterior reconstruction only by incisal edge length or appearance, without separately checking the incisal angle's functional position.
Reference: [1]
33. Posterior marginal ridge discrepancies need their own check
The posterior composite rubric assesses marginal ridge height as its own criterion, separate from general restoration morphology. A slight discrepancy that remains functional may still be acceptable, but a measured discrepancy greater than 0.5 mm is marked unsatisfactory for that criterion, so the ridge should be checked deliberately rather than judged by overall appearance.
Worked example: While checking a completed posterior composite, a candidate flosses the proximal contact and compares ridge height with the adjacent anatomy, measuring a 0.7 mm discrepancy; despite satisfactory cusp height and occlusal contour, the ridge criterion is scored unsatisfactory under this rubric.
Mistake to avoid: Judging a posterior composite only by its overall anatomy and overlooking a separately assessed marginal ridge discrepancy exceeding the 0.5 mm threshold.
Reference: [1]
34. Gloves are not a complete barrier to uncured resin
Resin monomers such as methacrylates can permeate latex and vinyl glove materials, so gloves reduce but do not eliminate skin contact with uncured resin. Because exposure risk is greatest before polymerisation, uncured materials should be manipulated with appropriate instruments rather than fingers, and contact dermatitis and eczema remain recognised occupational reactions among dental personnel handling these products.
Worked example: While handling uncured composite during a restoration, a practitioner uses an instrument to shape and remove excess material instead of pressing the material with a gloved finger, recognising that monomers may pass through latex or vinyl.
Mistake to avoid: Moulding uncured resin directly with a gloved finger on the belief that gloves provide complete protection against monomer permeation.
Reference: [6]
Dental trauma and endodontic access
35. Dental trauma assessment extends beyond the tooth crown
Dento-alveolar trauma may simultaneously involve fracture or displacement of teeth, crushing or fracturing of alveolar bone, and soft-tissue injuries such as contusions, abrasions and lacerations. A visible crown defect therefore represents only part of the clinical picture, and examination should consider displacement, supporting structures and soft tissues, with radiographs selected according to the specific case and clear justification.
Worked example: A patient presents with a chipped permanent incisor after a fall; the clinician also checks for tooth displacement, occlusal interference, alveolar tenderness and lip lacerations, and obtains radiographic views appropriate to the suspected injuries before planning treatment.
Mistake to avoid: Recording only the crown fracture and discharging the patient without assessing displacement, bone or soft-tissue involvement.
Reference: [9]
36. Combined injuries can worsen pulpal risk
When two different injuries affect the same tooth concurrently, their combined effect can be more detrimental than either injury alone, producing a negative synergistic effect. In mature permanent teeth with concussion or subluxation, a concurrent crown fracture significantly increases the risk of pulp necrosis and infection, so follow-up and monitoring should reflect this elevated risk rather than treating injuries in isolation.
Worked example: An adult with a mature permanent incisor that has both an enamel-dentine crown fracture and a subluxation injury is monitored at review appointments for pulp vitality changes, because the combined injuries carry a higher necrosis risk than the fracture alone.
Mistake to avoid: Assessing a subluxation injury and its concurrent crown fracture separately, overlooking that combined injuries raise the risk of pulp necrosis.
Reference: [9]
37. A single trauma radiograph can miss a fracture
Root and alveolar fractures can occur without clinical signs, and a single projection may not demonstrate the fracture line. The clinician selects views that answer the specific clinical question, and each radiograph requires justification based on a strong likelihood of influencing management; an inconclusive first image may prompt a complementary angulation rather than exclusion of injury.
Worked example: A patient struck in the mouth two weeks earlier reports tenderness but shows no visible fracture. The first periapical view is inconclusive, so an occlusal projection providing a different vertical angulation is justified to assess the suspected root fracture before diagnosis.
Mistake to avoid: Declaring a root fracture absent after one inconclusive periapical view, or requesting every available projection without a documented clinical justification for each image.
Reference: [9]
38. Photographs provide a baseline for visible trauma changes
Clinical photographs are strongly recommended at the initial examination and at follow-up because they document the baseline appearance against which later changes are compared. They support monitoring of soft-tissue healing, tooth discolouration, re-eruption of an intruded tooth and ankylosed infraposition, and provide medico-legal records, but they complement rather than replace clinical and radiographic assessment.
Worked example: A luxated incisor is photographed at the emergency visit. At the one-month review the crown appears greyer, and comparing the new image with the documented baseline helps confirm the colour change, while pulp sensibility testing and indicated radiographs still guide the pulp assessment.
Mistake to avoid: Treating a baseline photograph showing no visible change as proof that an injured tooth remains vital, instead of performing indicated sensibility testing.
Reference: [9]
39. Sensibility measures neural response rather than blood supply
Cold and electric pulp tests measure neural activity, not blood supply. After luxation injuries a transient loss of neural response is common, and immature teeth with incompletely differentiated A-delta fibres may not respond, so a single negative result is not conclusive for necrosis. Baseline testing followed by repeat testing at each review detects change over time.
Worked example: A mature permanent incisor luxated yesterday gives no cold response. Because transient neural loss is expected after luxation, the result is recorded as a baseline, interpreted alongside radiographs and other findings, and repeated at follow-up before any conclusion about pulp status is drawn.
Mistake to avoid: Diagnosing pulp necrosis and starting irreversible endodontic treatment from one negative cold test immediately after a luxation injury.
Reference: [9]
40. Access outline and chamber unroofing are separate checks
The ADC endodontic access rubric assesses outline shape, position and size separately from pulp-horn clearance and complete removal of the pulp chamber roof. An appropriately shaped, positioned and sized external outline therefore does not establish complete unroofing; remaining roof or obstructing pulp horns are scored independently.
Worked example: In a simulated molar access, the outline is ideally shaped, positioned and sized, but assessment finds part of the chamber roof still present. The roof-removal criterion is unsatisfactory even though the external outline criteria are met.
Mistake to avoid: Declaring access complete from its external shape without separately assessing the chamber roof and obstructing pulp horns.
Reference: [1]
41. Trauma splinting depends on injury type
Current evidence favours short-term, passive and flexible splints for luxated, avulsed and root-fractured teeth, to hold repositioned teeth while allowing controlled function. Duration is selected according to the injury type, while alveolar fractures instead aim to immobilise the bone segment. Composite and bonding agents are kept clear of gingival and proximal areas to limit plaque retention and secondary infection.
Worked example: A lateral luxation case is splinted for the period its diagnosis specifies, while a root-fractured tooth receives the duration recommended for that injury, with bonding material kept clear of gingival tissues and contact points so proximal cleaning remains possible.
Mistake to avoid: Using a single fixed splinting period for every injury type and letting bonding material flow over proximal surfaces where it blocks cleaning.
Reference: [9]
42. Root maturity changes the importance of pulp preservation
Pulp preservation is attempted after traumatic injuries in both mature and immature permanent teeth, since the pulp has healing capacity in each case. For immature teeth with open apices the priority is greatest, because maintaining vitality may permit continued root development and apex formation. Conservative pulp therapies remain guided by the specific diagnosis and injury details, so root maturity is documented during assessment.
Worked example: A child with an open-apex incisor following a pulp exposure is assessed for conservative pulp therapy aimed at preserving tissue, because retaining vitality could allow the root to continue developing and the apex to form, while maturity is recorded in the notes.
Mistake to avoid: Recording a traumatised immature incisor as if it were mature, omitting root maturity from the assessment and overlooking the value of preserving pulp tissue.
Reference: [9]
43. Trauma follow-up looks for delayed complications
Follow-up after traumatic dental injuries is mandatory, and each review combines questioning about symptoms with clinical and radiographic examination and pulp sensibility testing. The purpose is early detection of delayed complications, including pulp necrosis and infection, pulp space obliteration, root resorption, and breakdown of marginal gingiva and bone. Review timing and investigations are tailored to the injury type rather than following one universal schedule.
Worked example: At review, an intruded tooth that is symptom-free still undergoes sensibility testing and radiographic examination, because necrosis, infection, pulp space obliteration, resorption, or marginal tissue breakdown may develop later, and the recall interval is set according to that injury.
Mistake to avoid: Ending trauma review once pain settles, without the scheduled clinical, radiographic and sensibility assessments that detect complications developing without symptoms.
Reference: [9]
Developing dentition and occlusion
44. Dentition stage depends on the teeth present
Dentition stage is identified from the teeth actually present in the mouth. Mixed dentition denotes the period when primary and permanent teeth coexist, approximately from six to eleven years of age. These ages only orient the clinician, because eruption and development vary between individuals, and recognising developmental or eruption anomalies at each stage informs treatment goals and sequential planning.
Worked example: A ten-year-old attends with erupted permanent incisors and first molars while several primary molars remain, so mixed dentition is recorded from clinical and radiographic findings, with the approximate age range used only as orientation because individual eruption timing varies.
Mistake to avoid: Assigning a child's dentition stage from chronological age alone instead of examining which primary and permanent teeth are actually present.
Reference: [8]
45. Occlusal assessment separates structural and functional findings
Assessment of the developing occlusion combines facial analysis, intraoral examination and functional analysis so that the relative contributions of soft tissue, dental and skeletal structures to a malocclusion can be established and deleterious habits detected. Problems are prioritised by relative severity within a sequential plan, and referral is considered where complexity exceeds the clinician's scope of competence.
Worked example: An eight-year-old presents with an anterior crossbite and a prolonged thumb habit; the clinician documents facial symmetry, intraoral occlusal relationships and functional findings, weighs dental against skeletal contributions, informs the parents, and discusses referral because the presentation's complexity may exceed local competence.
Mistake to avoid: Choosing an arch expansion appliance from study model alignment alone while omitting facial analysis, functional assessment and habit history.
Reference: [8]
46. Diagnostic records should answer specific developmental questions
Each record answers defined questions: diagnostic casts assess occlusal relationships, arch length requirements for tooth size discrepancies and arch asymmetry, while intraoral or panoramic radiographs establish dental age, assess eruption problems and estimate the size and presence of unerupted teeth. Prudent judgment determines which records the clinical condition requires, so a complete set is not routine.
Worked example: When a palpable asymmetry of an unerupted canine raises an ectopic-position question in the late mixed dentition, the clinician takes a panoramic radiograph to address that specific question and defers casts, cephalograms and other views until separate diagnostic questions arise.
Mistake to avoid: Ordering photographs, casts, cephalograms and CBCT for every child before any diagnostic question has been defined.
Reference: [8]
47. Early treatment is an individual decision
Interceptive treatment can benefit many children, yet it is not indicated for every developing malocclusion. The decision weighs accurate diagnosis, timing of treatment, craniofacial growth and configuration, the child's ability to understand and cooperate, compliance and parental support. This principle guides whether early intervention is considered; it does not determine timing of any specific appliance or procedure.
Worked example: A child with mild upper arch spacing is reviewed at recall visits while the clinician discusses diagnosis, growth expectations, the child's cooperation and family circumstances with the parents, and no appliance is started because these factors do not yet support early intervention.
Mistake to avoid: Commencing interceptive treatment immediately upon detecting any developing malocclusion, assuming earlier intervention is always preferable for every child.
Reference: [8]
48. Developmental assessment continues through successive stages
Evaluation of the developing dentition is ongoing at all stages rather than a single event. During the late mixed dentition, emphasis falls on ectopic positions of canines, premolars and second permanent molars. Radiographic examination augments clinical assessment when necessary and feasible; this continuing surveillance does not imply routine imaging at every stage.
Worked example: A child reviewed during the early mixed dentition returns at age eleven entering the adolescent stage; the clinician reassesses erupting canines and second molars clinically and arranges a radiograph only because a specific ectopic-eruption question has arisen at this later stage.
Mistake to avoid: Documenting one normal developmental examination and then dismissing later review of canine and second molar eruption as unnecessary.
Reference: [8]
49. Ankylosis can produce apparent submergence
An ankylosed tooth is fused to the surrounding bone because the periodontal ligament has been replaced by osseous tissue, so it cannot participate in normal eruptive change. While the ankylosed tooth itself stays at the same vertical level, it appears to submerge relative to adjacent teeth that continue to erupt in a growing child.
Worked example: A nine-year-old patient has a primary molar that sits visibly lower than its neighbours, so ankylosis is suspected and clinical mobility testing plus suitable imaging are arranged before any treatment decision is made.
Mistake to avoid: Assuming the tooth has physically moved downwards, or selecting treatment based on the appearance of infraocclusion alone.
Reference: [8]
Fixed and removable prosthesis assessment
50. Crown insertion path and undercuts require separate evaluation
The ADC metal ceramic crown preparation rubric assesses the path of insertion and the presence of undercuts as separate observations. A preparation may have no undercuts yet still have a path of insertion that is not optimal, and a path requiring modification of an adjacent tooth is graded differently from one that does not. These descriptors apply to the simulated preparation.
Worked example: During a simulated preparation, a candidate checks that the taper shows no undercuts, then separately verifies the intended insertion path against adjacent contacts, recognising that freedom from undercuts alone does not confirm an optimal path.
Mistake to avoid: Treating the absence of undercuts as proof of an optimal insertion path, or assuming the two rubric criteria are interchangeable.
Reference: [1]
51. Denture cleansers are used outside the mouth
Dentures should be cleaned every day with an effective, nonabrasive denture cleanser to reduce biofilm and potentially harmful microorganisms. Soaking and brushing are performed after the denture has been removed from the mouth, because denture cleansers are not intended for use while the prosthesis is still in place, and manufacturer instructions govern soaking times.
Worked example: A patient is shown to remove the denture, rinse away loose debris, apply a cleansing paste extraorally with a soft brush, and then rinse it off following the product directions.
Mistake to avoid: Using a denture cleanser while the prosthesis remains in the mouth, or assuming all products share one soaking time.
Reference: [14]
52. Denture storage must avoid drying and excessive heat
When a denture is not being worn, keeping it in water or a suitable denture cleanser solution helps it retain its shape, remain pliable and avoid drying out. Hot or boiling water must not be used for storage or cleaning because the heat can warp the denture material and distort its fit.
Worked example: A patient who has been soaking an unworn denture in boiling water overnight is advised to store it in room-temperature water instead, because the heat may have warped the acrylic.
Mistake to avoid: Assuming that hotter storage water cleans or cares for a denture better than cool water.
Reference: [14]
53. Adhesive does not correct an ill-fitting denture
Denture adhesives may add retention and stability to a well-fitting prosthesis when used as directed, but they cannot compensate for lost fit. A denture that feels loose or causes discomfort should be professionally assessed, since relining or replacement may be needed to prevent oral sores; escalating adhesive use only masks the underlying problem.
Worked example: A patient reports that a complete denture loosens by afternoon despite applying extra adhesive each morning; the practitioner arranges a fit assessment rather than recommending further adhesive, and explains that relining or replacement may follow depending on the findings.
Mistake to avoid: Telling a patient to increase adhesive quantity repeatedly without assessing why the prosthesis has become loose or uncomfortable.
Reference: [14]
54. Changes in supporting teeth trigger prosthesis reassessment
A removable partial denture or overdenture depends on the health and position of its supporting teeth, so any change to those teeth is a trigger for professional evaluation. Evaluation does not automatically mean replacement; the prosthesis may still be serviceable, but continued wearability alone does not confirm that support and function remain satisfactory.
Worked example: A patient loses an abutment tooth that supported a partial denture but can still clip the appliance into place; the practitioner schedules a reassessment of support and fit, explaining that the outcome could range from adjustment to a new design.
Mistake to avoid: Accepting that a partial denture is still satisfactory simply because the patient can keep wearing it after supporting teeth change.
Reference: [14]
Treatment quality, infection control and emergencies
55. Delegating tasks does not delegate IPC responsibility
Delegating infection prevention and control tasks to trained staff is permitted, but responsibility for compliance cannot be delegated. Each registered dental practitioner must ensure support staff have dedicated IPC procedures aligned with the guidelines and ongoing training, and must verify that appropriate systems remain in place even when others perform day-to-day tasks.
Worked example: A practitioner assigns instrument reprocessing to a trained dental assistant and keeps responsibility by reviewing the IPC manual annually, confirming the assistant's ongoing training is current, and checking that packaging, sterilisation and record-keeping systems continue to meet the practice's documented procedures.
Mistake to avoid: Assuming IPC responsibility transfers entirely to a staff member once that person is allocated the reprocessing tasks.
Reference: [4]
56. Endodontic access must conserve walls and protect the floor
In the simulated endodontic access task, the rubric separately assesses removal of internal tooth structure on axial walls and the pulpal floor, floor condition, and debris. Moderately excessive removal, wall gouging or an undermined marginal ridge, and gross removal or perforation attract lower marks, while debris obscuring the chamber or canal orifices is judged independently. Achieving canal access does not excuse avoidable structural damage.
Worked example: A candidate reaches all canals through an access cavity but leaves a gouged pulpal floor and an undermined marginal ridge; under the simulated rubric these remain separate structural defects, and debris obscuring the orifices is also marked independently.
Mistake to avoid: Treating canal access as sufficient and accepting gouged walls, an undermined marginal ridge or floor damage as unavoidable costs of achieving it.
Reference: [1]
57. A provisional crown must be intact and removable
The ADC provisional crown rubric awards the top integrity rating only when the restoration is present and intact, and records an unsatisfactory result when it is fractured, loose, missing, or cannot be removed from the preparation. Because a provisional is designed for later removal, an over-retained provisional counts as an integrity failure even if it appears sound.
Worked example: In a timed practice run, a candidate's provisional crown seats firmly and appears intact, but assessment confirms it cannot be removed from the prepared tooth, so the attempt is recorded as an unsatisfactory integrity finding.
Mistake to avoid: Treating a very tight provisional as a success because strong retention is assumed desirable for definitive crowns.
Reference: [1]
58. Provisional emergence and contact form are distinct contours
The provisional crown rubric lists emergence profile and proximal contact contour as separate observation rows with different scales. Emergence is graded by quantified over- or undercontouring relative to adjacent teeth, while the contact-contour row grades width, height and anatomical form, where slight breadth or slight occlusal or gingival placement is satisfactory and poor contour is borderline.
Worked example: Assessing a rehearsed molar provisional, the candidate finds an optimal emergence profile and a mesial contact only slightly broad and slightly occlusally placed, so emergence earns the very-good descriptor while contact contour earns the satisfactory descriptor.
Mistake to avoid: Claiming both scales end in non-anatomical form, grading borderline solely for slight contact breadth or displacement, or inferring contact width and height from a floss finding alone.
Reference: [1]
59. Provisional occlusion uses neighbouring and contralateral references
The rubric grades occlusal contacts by comparing the provisional with adjacent and contralateral teeth, recording infraocclusion or supraocclusion in bands below 0.5 mm, between 0.5 and 1.0 mm, and above 1.0 mm. These thresholds apply to the simulated provisional task only, and a polished occlusal surface does not by itself demonstrate correct contacts.
Worked example: In a practice attempt, a candidate polishes the provisional's occlusal surface well but, checking against the neighbouring and contralateral teeth, finds the restoration sits about 1.2 mm out of occlusion, crossing the rubric's unsatisfactory boundary.
Mistake to avoid: Judging occlusal contacts from the provisional alone, without referencing the adjacent and contralateral teeth for comparison.
Reference: [1]
60. Rapid airway, breathing or circulation problems suggest anaphylaxis
Anaphylaxis is a life-threatening emergency characterised by rapidly developing airway, breathing or circulation problems, often with skin changes. Early intramuscular adrenaline is the first-line drug treatment, an ambulance should be called, and the person is laid flat, or seated if breathing is difficult, and never allowed to stand or walk.
Worked example: Shortly after an antibiotic injection, a patient develops noisy breathing and throat tightness. The candidate summons help, calls an ambulance, follows the available action plan without delay, administers the patient's own adrenaline autoinjector as directed and keeps the person lying flat.
Mistake to avoid: Delaying emergency treatment to gather a detailed allergy history, or allowing the affected person to stand or walk.
Reference: [15]
Sources and official outlines
- ADC Practical Examination Handbook for General Dentistry
- ADC Professional Competencies of the Newly Qualified Dental Practitioner
- Ahpra Shared Code of Conduct
- Australian Dental Association Guidelines for Infection Prevention and Control
- Dental Anatomy and Morphology of Permanent Teeth
- ADA Materials for Direct Restorations
- SDCEP Prevention and Treatment of Periodontal Diseases in Primary Care
- AAPD Management of the Developing Dentition and Occlusion in Pediatric Dentistry
- IADT Guidelines for Traumatic Dental Injuries: Fractures and Luxations
- ADA X-Rays/Radiographs
- ADA Oral Cancer Living Guideline
- SDCEP Management of Dental Patients Taking Anticoagulants or Antiplatelet Drugs
- ADA Oral Analgesics for Acute Dental Pain
- ADA Denture Care and Maintenance
- ANZCOR Guideline 9.2.7: First Aid Management of Anaphylaxis