What is the concentration of fluoride in prescription fluoride rinses?

The concentration of fluoride in prescription fluoride rinses typically includes higher levels that are effective for caries prevention in patients at risk. The correct answer, which indicates concentrations of either 0.63% stannous fluoride or 0.2% sodium fluoride, reflects the standard formulations used in these therapeutic products.

Stannous fluoride is known for its antibacterial properties, helping to reduce plaque and gingivitis, while sodium fluoride is primarily recognized for its efficacy in remineralizing enamel and preventing decay. These fluoride rinses are prescribed for patients who require additional protection against dental caries, particularly those with a history of cavities or certain health conditions that increase their risk.

Other fluoride concentrations mentioned in the other choices are typically found in over-the-counter products or are not commonly used as prescription rinses. For example, 0.05% stannous fluoride and 0.1% sodium fluoride are lower concentrations suitable for daily preventive use but may not provide the same therapeutic benefits required for higher risk patients. On the other hand, 1% sodium fluoride is a concentration often used in professional treatments but is not standard for daily rinse formulations. Thus, the concentrations specified in the correct answer align with the therapeutic intent of prescription fluoride rinses.