Which fluoride preparation is described as increased strength for xerostomia patients?

• A. 1.1% sodium fluoride
• B. 0.2% sodium fluoride
• C. 0.5% fluoride varnish
• D. 0.15% sodium fluoride

Answer: (A)

When salivary flow is reduced, the mouth loses natural cleansing and buffering, and more fluoride must be delivered directly to the teeth to protect against decay. A fluoride product with the highest concentration provides more fluoride ions during the brief contact time, enhancing remineralization and forming a stronger protective layer on enamel and dentin. For xerostomia patients, this increased strength means better prevention of decay in an environment where saliva can’t supply its normal protective effects. The other options deliver fluoride at lower concentrations or in forms that don’t provide as much fluoride per application, so they don’t offer the same level of protection for someone with dry mouth. Therefore, the strongest fluoride preparation is the one with the highest fluoride concentration.