CASE 1 — Pediatric patient: Tooth K (primary maxillary first molar) has interproximal caries visible only on the radiograph (no clinical signs of extensive involvement). What is the best treatment?

Correct answer: B. Composite restoration

• A. SSC is reserved for extensive multi-surface caries, post-pulpotomy/pulpectomy, or insufficient tooth structure — not for isolated small interproximal caries.
• B. A small interproximal lesion visible only on radiograph (without extensive clinical involvement) can be restored with a composite or GI Class II restoration. Conservative approach is appropriate.
• C. SDF arrests caries; radiographically detected small interproximal caries in a cooperative patient can be fully restored.
• D. Amalgam is a traditional option but composite or glass ionomer is now preferred for smaller interproximal lesions in primary teeth.