For a 5-year-old with deep caries on tooth #L (primary maxillary left second molar), what is the treatment of choice?

Correct answer: B. Stainless steel crown (SSC)

• A. Composite resin has limited longevity in primary molar restorations compared to SSC, especially with deep caries.
• B. Correct. Stainless steel crown (SSC) is the treatment of choice for primary molars with extensive/deep caries or following pulp treatment (pulpotomy/pulpectomy). SSCs have superior longevity compared to composite or amalgam in primary molars.
• C. SDF arrests caries progression but is used for teeth that cannot be conventionally treated or as a caries-arrest strategy — not the primary treatment for a restorable primary molar.
• D. Extraction is not the first choice for a primary molar that can be restored; space maintenance would be needed after extraction.