Which topical fluoride option is commonly applied in dental offices?

• A. Fluoride toothpaste
• B. Water fluoridation
• C. Fluoride varnish
• D. Dietary fluoride supplements

Answer: (C)

Topical fluoride works by delivering fluoride directly to the tooth surface to enhance remineralization and reduce demineralization. Fluoride varnish is designed for professional use: it’s a high-concentration fluoride coating painted onto the teeth, and it adheres to enamel, remaining there long enough to provide substantial ongoing fluoride exposure without needing a rinse. This makes it practical for office visits, especially for children and patients at higher caries risk, because it sets quickly, minimizes ingestion risk, and doesn’t require patient cooperation beyond the application.

Fluoride toothpaste is a home-use product, not something routinely applied by the clinician in the office. Water fluoridation is a community-level intervention rather than an in-office treatment. Dietary fluoride supplements are systemic, taken orally to raise fluoride levels in the body, and they don’t provide the localized, surface-targeted protection that varnish offers during a visit.