Is there a limit to how white dental bonding can be? (photo)

I can certainly understand your frustration. It all depends on 4 factors1- the shade of the composites used 2- the color of the teeth underneath3- the thickness of the overlaying composite4 the use of opaquers These all combined will give you hopefully better resultsVery light composites are often not part of a general dentists inventory but they are availableIf you choose to readdress this have the dentist do a "mock up" on a tooth so you can see the final results before you commit to the new composite veneersGood luck

The shades of bonding (composite filling) are determined by the manufacturer. If you want the whitest teeth get porcelain. Porcelain can be stained and mixed to create very white teeth.