Patent ID: 8785514
Filing Date: 2014-07-22
Classification: A61C,A61K,C08F

Abstract:
1. A hardenable composition comprising a light-curable component and a self-curable component, wherein said light-curable component comprises: an onium compound, a photosensitizer, and a resin system comprising a free radically active functional group and having no cationically active functional group, wherein said light-curable component is not miscible in water, and said self-curable component comprises a reducing agent and an oxidizing agent, wherein the reducing agent is selected from the group consisting of a urea reducing agent and a thiourea reducing agent, wherein the hardenable composition is formed by free radical polymerization of the resin system, and wherein the hardenable composition has an initial b* color value of less than 20 and a ΔE of less than 10, wherein ΔE represents the color change of the composition upon curing and is calculated using the equation ΔE=[(ΔL*)