No — whitening treatments only work on natural tooth structure. Dental crowns, porcelain veneers, composite bonding, and tooth-coloured fillings will not change shade with whitening products.
This is an important consideration if you have visible restorations, as whitening your natural teeth may create a colour mismatch. If you're considering whitening and you have existing restorations, it's best to whiten your natural teeth first, then have any visible restorations replaced or adjusted to match your new shade.
This is something we plan carefully with you at Dental Folk — we want the end result to look natural and seamless.