PYRAX® Aavin A1 A2 Light Cure Universal Nano Hybrid Composite, For Filling Light Cure Universal Nano Hybrid Composite is a light curable composite. It can be used for anterior and posterior dentine and enamel restorations. The inorganic filler loading is about 71% by volume. The particle size varies from 0.03 to 5 microns. After filling, a blue light initiates a quick free radical polymerization generating an organic resin and inorganic filler composite which demonstrates a great strength and aesthetic appearance as real tooth. Due to its high radiopacity, a clear X- ray picture will be helpful for clinic practice.