Glass ionomers also suitable for permanent posterior restorations
Glass Ionomer restorations are often not used posterior because the occlusal forces are too high for GI in vitro. However, a clinical (in vivo!) study showed that glass Ionomers just performing as well as amalgam, writes ZWP online.
The researchers compared 10,000 dental restorations from previous studies. They conclude that glass ionomers is also suitable for choose.
To six years after the restoration glass ionomers performs as well as composite or amalgam.
online source ZWP University of the Witwatersrand