Tetric® PowerFlow is a flowable, light-curing radiopaque composite for the direct restorative treatment in posterior teeth. As its opacity increases during polymerization, Tetric PowerFlow is also suitable for discolored tooth structure. It is applied as initial layer in increments of up to 4 mm in Class I and II restorations. Tetric PowerFlow cures with light in the wavelength range of 400– 500 nm.