Is there a good way to block out dark tetracycline staining within a cavity preparation to try to brighten a dark tooth?

One good way to block dark stained teeth is to use an opaque flowable composite below the more translucent restorative composite. This lightens the final shade of the restoration without making the entire restoration too light or opaque. GrandioSO Flow (VOCO) is a great new flowable composite that comes in an opaque white shade that would be perfect for this application. It has a patented new “non-dripping” viscosity that can be advantageous for many applications.