Which statement is true regarding glass ionomer sealants?

The statement that glass ionomer sealants release fluoride over time is accurate and highlights one of the beneficial properties of these materials. Glass ionomer sealants are formulated with glass particles and polyacrylic acid. When they set, they chemically bond to the tooth structure and have the ability to release fluoride ions. This gradual release of fluoride helps in the prevention of caries by reinforcing the tooth structure and creating a less conducive environment for bacteria.

Fluoride is well-known for its role in remineralizing demineralized areas of enamel, making it a valuable feature of glass ionomer materials used as sealants. This characteristic contributes to their efficacy in protecting teeth, particularly in high-caries-risk populations and among children, where maintaining enamel health is critical.

Considering the context of the other options, it is important to note that glass ionomer sealants are not limited to anterior teeth, nor are they exclusively for pediatric patients or easily removable after setting. They are versatile materials that can be effectively utilized on both anterior and posterior teeth and are suitable for adult and pediatric populations alike, providing a long-term preventive solution for various dental applications.