Which intervention during pregnancy has no proven effectiveness in preventing dental caries in offspring?

Which intervention during pregnancy has no proven effectiveness in preventing dental caries in offspring?

• A. Fluoride toothpaste
• B. Fluoride mouth rinse
• C. Fluoride supplements
• D. Fluoride varnish

Answer: (C)

Fluoride works best when it acts directly on the teeth where demineralization occurs, and the timing and route of exposure matter for offspring caries risk. Giving fluoride to the mother during pregnancy hasn’t been shown to reliably prevent caries in the child, so it’s not an effective strategy for this purpose. In contrast, delivering fluoride directly to the child’s teeth or mouth — through daily fluoride toothpaste, fluoride mouth rinses, or professional fluoride varnish — provides proven protection by promoting remineralization and inhibiting enamel breakdown. Among the options, the maternal fluoride supplement approach lacks demonstrated effectiveness for offspring caries prevention, while the other methods offer clear, evidence-based benefits.

Fluoride works best when it acts directly on the teeth where demineralization occurs, and the timing and route of exposure matter for offspring caries risk. Giving fluoride to the mother during pregnancy hasn’t been shown to reliably prevent caries in the child, so it’s not an effective strategy for this purpose. In contrast, delivering fluoride directly to the child’s teeth or mouth — through daily fluoride toothpaste, fluoride mouth rinses, or professional fluoride varnish — provides proven protection by promoting remineralization and inhibiting enamel breakdown. Among the options, the maternal fluoride supplement approach lacks demonstrated effectiveness for offspring caries prevention, while the other methods offer clear, evidence-based benefits.