Caries Risk Radiograph Interval — NDEB AFK MCQ

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EasyRadiology & ImagingCaries Risk Radiograph IntervalNDEB AFK

Which of the following is the most appropriate recall radiograph interval for a patient with high caries risk according to current Canadian guidelines?

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Correct answer: B — Every 6 months (posterior bitewings)

For high caries risk patients (active caries, poor oral hygiene, high sugar diet, xerostomia, past caries experience), posterior bitewing radiographs are recommended every 6-12 months. For low caries risk patients, bitewings every 18-36 months are sufficient. These intervals are based on the expected rate of caries progression and the ability of radiographs to detect lesions at a stage where non-invasive intervention is still possible. The selection criteria should be individualised based on clinical assessment and should follow the ALARA principle.

Reference: CDA – Recommendations for Patient Selection and Radiographic Guidelines; White & Pharoah, 8th ed., 2019