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Objective:To evaluate the polymerization of dual-cured resin cements with varioust light-curing modes.Methods:Specimens were fabricated with two brands of dual-cured resin cements: RelyX Unicem and PermaCem 2.0,by 4 different light curing modes: intermittent,immediate,delayed light-curing mode and without light-curing.After 24hs storage in darkness,the surface hardness of the specimen was tested with a micro-hardness tester and the flexural strength was determined used three-point bending test.Data were analyzed by covariance analysis(α=0.05).The glass transition temperature was analyzed with a differential scanning calorimeter.