A Strontium-based Glass Ionomer:The strontium glass provides good radiopacity and snapset characteristics, unanimously preferred by clinicians around the world. Interestingly, strontium will mimic calcium in the formation of strontium hydroxyapatite and strontium fluoroapatite to affect internal remineralization within the tooth structure.
Characteristics Benefits
Chemical adhesion to tooth structure allows minimal cavity preparation without the need for etching or bonding agents
Chemical setting without shrinkage allows single step placement without layering
Similar thermal expansion as tooth structure produce minimal stress on the marginal seal
Strontium based glass provides good radiopacity and snap-set characteristics
Strontium based fluoride releasing formulation contributes to internal remineralization within tooth structure as well as increasing surface strength over time
High compressive and flexural strength, and 60% higher wear resistance than conventional glass ionomers makes Gold Label 9 strong enough for use in posterior teeth
Indications 
Class I and small Class II restorations in non-load bearing areas
Class I and Class II restorations in deciduous teeth
Transitional restorations
Base / Core build-ups