Abstract
Two commercially available visible light cured reline materials and curing units were compared by in vitro tests. Flexural strength, impact strength, stain resistance, and blanching were measured. Triad VLC Reline Material used with the Triad II Curing Unit (Triad system) exhibited superior properties when compared to Astron LC used with the Astron XL curing unit (Astron system). When alternate combinations of materials and curing units were tested for strength and stain resistance (measure of completeness of cure), the Astron XL curing unit was unable to completely cure Triad VLC Reline Material.