Absolutely!  As part of the crown preparation process, the dentist will color-match your new crowns to the surrounding teeth so they blend in naturally.  If you wish to have teeth whitening, this is done prior to color matching and preparing the crowns so that the crown will match your new, whiter smile. 

Can my existing crowns be whitened?

Unfortunately crowns cannot be laser whitened.  If your existing crowns are very old and discolored, they would need to be replaced with new crowns if you wish for an improved appearance.