Which cement is known to release fluoride at a slow rate, helping to inhibit decay?

Glass ionomer cement is known for its ability to release fluoride over time, which is beneficial in helping to prevent dental decay. This characteristic is particularly valuable because fluoride has been shown to strengthen tooth enamel and inhibit the demineralization process that can lead to cavities. The slow and sustained release of fluoride from glass ionomer cement creates a protective environment around the tooth structure, promoting mineralization and enhancing resistance to acid attacks from bacteria.

Resin-modified glass ionomer cement also has fluoride-releasing properties but is typically used in specific situations where enhanced strength and improved aesthetic qualities are desired. However, the primary characteristic that sets regular glass ionomer apart in this context is its consistent fluoride release.

Zinc phosphate cement and composite resin cement do not have the same fluoride-releasing capabilities as glass ionomer cement. While these materials may serve different purposes in restorative dentistry, they do not contribute to decay prevention in the same way through fluoride release.