Treated glass polyalkenoate cement

摘要

Glass polyalkenoate (glass ionomer) cements are used formed into dental crowns, despite their reputedly inadequate toughness, strength and wear-resistance early after forming for such an application, by heating the newly formed glass ionomer crown 20 at 120-200{C for 5 to 120 minutes. The crowns may be placed in a steel bomb 7 immersed in silicone oil 3. Alternatively the crowns are subjected to super heated steam.