Radiographic assessment of high caries risk adult — ORE Part 1 MCQ
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Correct answer: D — Posterior bitewing radiographs tailored to caries risk status
Explanation lettering: E = shown as A · C = shown as B · A = shown as C · B = shown as E
Posterior bitewing radiographs are the evidence-based imaging modality for caries risk assessment in high-caries-risk adults. FGDP UK Selection Criteria recommend 6-monthly bitewings for patients in this category until risk reduces. The patient presents with multiple established risk indicators: high caries risk status, multiple restorations, visible plaque stagnation, clinical proximal shadowing, and 3-year imaging interval. Clinical examination alone detects only 30–40% of approximal dentine caries; bitewings are essential for diagnosis. Option A (panoramic radiography) has higher radiation dose and lower sensitivity for proximal lesions and lacks clear clinical indication. Options B and C are inappropriate imaging modalities entirely. Option E contradicts evidence-based risk-stratified guidance: age alone does not determine radiographic need; risk assessment does.
Reference: Faculty of General Dental Practice (FGDP) UK Selection Criteria for Dental Radiography (cited in NHS England Dentistry Care Pathways Guidance, 2024–2025); SDCEP Prevention and Management of Dental Caries in Children: Radiographic Assessment (2014); GOV.UK Delivering Better Oral Health Chapter 4: Dental Caries (2025). https://www.england.nhs.uk/long-read/nhs-dentistry-care-pathways-guidance/