Will Zoom Whitening Change the Color of Crowns?

The whitening process acts by oxidizing microscopic particles within the tiny tubules of the tooth.  Crowns and fillings won't tend to change at all.  Many crowns are too bright to begin with, so for some folks, whitening the teeth just makes the crowns blend better.  In my opinion, it is better to have a dark crown than a crown that is too bright.  Bright porcelain really draws attention to itself in a negative way.  Best of luck!

Great question. 

My advice is you should ask your dentist what they would suggest.  You can successfully whiten your natural teeth with many options.  Try custom trays and then you can monitor the whiteness. 

You can get a quick start by doing a in office treatment like a Power Boost or you can do Zoom / Kor whitening which are more involved but really work.  Once you achieve the color you like, then evaluate your crowns and replace,  if needed at all.

To keep the porcelain caps looking as best as they can invest in a Whitening Toothpaste, like Supersmile, Starbrite and Squigle and use daily.