Softening patterns of light cured glass ionomer cements

摘要

Objective: the aim of this study was to determine the effects of commonly used food simulating solutions and sodium hydroxide on the softening of light cured glass ioncomer cements. Methods; Four types of light cured glass ionomers (classified on the basis of the liquid component) as follows: (1) materials that combine a Polymerizable monomer and polyalkenoic acid (PMPA); (2) use of a polymerizale polyalkenoic acid (PPA); (3) acid monomer (AM) in Place of the polyakenoic acid; and (4) replacement of polyalkenoic acid with polymerizable monomer (PMPR). A traditional glass ionomer And a microfil composite were used s controls.