Dental Caries Detection — ORE Part 1 MCQ
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Correct answer: D — Horizontal bitewing radiographs
Horizontal bitewing radiographs are the standard first-line imaging modality for detecting interproximal caries in posterior teeth. Bitewings provide optimal geometry for visualizing proximal surfaces with minimal distortion and are superior to periapical radiographs for early-stage interproximal lesion detection. Panoramic radiographs lack the resolution needed for small carious lesions. CBCT is not indicated for routine caries screening due to radiation dose and cost considerations. Anterior occlusal radiographs are not designed for posterior tooth examination. Bitewings remain the evidence-based choice in UK dental practice and are recommended by NICE, SDCEP, and FGDP guidance.
Reference: Takahashi N, et al. A comparison of diagnosis of early stage interproximal caries with bitewing radiographs and periapical images using consensus reference. Dentomaxillofac Radiol. 2019 Feb;48(2):20170450. https://pubmed.ncbi.nlm.nih.gov/30222021/