انه نوعglass inomer ينفع ك base تحت الامالجم أو كده وهل فيه نوع منه light cure syrange - وبسأل هو light cure compomer syrange liner and base هل بيتحط علطول تحت restoration سواء امالجم أو كومبوزت ولا بيحتاج bond and acid ولا بيحتاج bond بس وفي حاله الامالجم هل ZN POLY افضل تحته من gic
Glass ionomer is expensive to be used as a base under amalgam. Zinc phosphate has a modulus of elasticity like dentine which is better than gic. However, in case of using gic as a base, amalgam condensation should be delyed until setting of gic reaches an acceptable state so light cure gic is preferred. But not the best choice. Gic is preferred as a base under resin composite specially rmgic. Compomer requires acid etching and bonding like resin composite. Gic as a liner is supplied but ask the supplier in your country.
