What is an advantage of resin-modified glass ionomer for root caries restorations?

• A. Fluoride release and minimal leakage
• B. High cost and poor wear resistance
• C. No fluoride release
• D. Requires high temperature curing

Answer: (A)

An important benefit of resin-modified glass ionomer for root caries restorations is its fluoride release, which helps inhibit demineralization and promote remineralization of adjacent dentin. This material also tends to bond well to dentin and create a reliable marginal seal, reducing microleakage at the restoration interface—an advantage on root surfaces where leakage and recurrent caries are a concern. Unlike options that claim no fluoride release or high-temperature curing, resin-modified glass ionomer actually releases fluoride and is cured by light or a self-curing mechanism, with wear and cost profiles that are generally favorable for root caries applications.