Effect of delayed light-curing on solubility, color stability, and opacity of Fuji II LC glass ionomer cement: original article

Objective: Resin-modified glass ionomer (RMGI) cements are among the commonly used restorative materials inlow stress-bearing areas and also for temporary restorations. The competition between acid-base reactions andlight polymerization in delayed curing of RMGIs can affect their physical mechanical properties,as well as degree conversion. Since solubility, color stability, opacity main physicalproperties affecting durability clinical service RMGI restorations, this study aimed to assess effectof on Fuji II LC RMGI. Material Methods: This invitro, experimental evaluated 80 specimens (10 per each 4 groups) termsof at 6 months later. Specimens were cured immediately or curedwith 1, 5 10 min delay. Results: Maximum solubility minimum change stabilityat noted group with by min. A significant difference was thesolubility after 1 Significant differences andcolor stability all other groups (P < 0.05). Conclusion: Delayed curingby decreased compared immediate min.Although did not reach statistical significance. Color changes mainlyinfluenced rather than reactions.KEYWORDSGlass Ionomer cement; Solubility; Color; Opacity.