Resin-Modified Glass Ionomer
Also written as: RMGI — Resin-Modified Glass Ionomer
A hybrid restorative material combining conventional glass ionomer chemistry with resin monomers to improve physical properties and working time.
Full Definition
Resin-modified glass ionomer (RMGI) incorporates light-curable resin monomers—typically HEMA—into the conventional acid-base glass ionomer matrix, producing a material that sets both by an acid-base reaction and by photopolymerisation. This dual-cure mechanism extends working time and improves early moisture resistance compared to conventional glass ionomers. RMGI materials retain the fluoride-releasing and adhesive properties of their conventional counterparts, making them popular for liners, bases, and Class V restorations. Editors should note the hyphenated form 'resin-modified' and the initialisation as RMGI, not 'RMGIC'.
Usage
Usage note: Hyphenate 'resin-modified' as a compound modifier. Do not abbreviate as 'RMGIC' in formal manuscripts unless that form appears in the source journal's style.
In Context
- "The cavity was lined with resin-modified glass ionomer before placement of the composite increment." — Clinical case report
- "RMGI liners demonstrated superior fluoride release compared to resin-based composites in the six-month trial." — Research abstract