What is the composition of resin modified glass ionomer?

The composition of resin modified glass ionomer (RMGI) typically consists of approximately 80% glass ionomer cement (GIC) and 20% composite resin. This unique combination allows RMGI to maintain many of the beneficial properties of traditional glass ionomer cements, such as fluoride release and chemical adhesion to tooth structure, while also enhancing certain features through the addition of resin. The resin component provides improved aesthetics, increased strength, and better wear resistance compared to standard glass ionomer cements, making RMGI a preferred choice for various clinical situations in dentistry.

The specific ratio of 80% GIC to 20% composite resin is critical for achieving the desired balance of physical properties that benefit dental treatments, particularly in areas requiring both durability and aesthetic considerations.