- The primary benefit of using light-activated glass ionomer cements in restorative dentistry is their improved early strength and faster setting compared to conventional glass ionomer cements.
- Traditional glass ionomers rely solely on a chemical acid-base reaction for setting, which can be relatively slow and result in a longer wait time before the restoration achieves optimal strength.
- In contrast, light-activated glass ionomers incorporate a resin component that polymerizes upon exposure to a curing light, leading to a significantly accelerated setting process.
- This rapid polymerization contributes to enhanced early mechanical properties, allowing the restoration to better withstand occlusal forces soon after placement.

- Although glass ionomer cements are well-known for their fluoride release and adhesion to tooth structures, the introduction of light activation primarily targets improving the handling properties and immediate strength, rather than increasing fluoride release or adhesion.
- Moisture sensitivity during placement is still a concern with glass ionomers, and while some improvements have been made, light activation does not inherently provide greater resistance to moisture contamination.

In summary, the key advantage of light-activated glass ionomer cements lies in their ability to combine the benefits of chemical bonding and fluoride release with faster setting times and improved early strength, facilitating more efficient and durable restorations.

Reference: Sturdevant's Art and Science of Operative Dentistry, 7th Edition, Chapter 10 / Page 235