Low-Risk Bitewing Interval — NDEB AFK MCQ
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Correct answer: B — Every 24-36 months
For low-risk caries patients (no caries in last 3 years, good oral hygiene, low sugar diet, adequate fluoride exposure, no xerostomia), bitewing radiographs are recommended every 24-36 months. This interval reflects the slow rate of caries progression expected in low-risk individuals and minimises radiation exposure (ALARA principle). High-risk patients require more frequent bitewings (every 6-12 months). These are guidelines — individual clinical judgement should always guide radiographic prescription based on the specific patient's risk profile.
Reference: CDA – Recommendations for Patient Selection and Radiographic Guidelines