Can tooth-colored fillings be whitened?

No whitening treatment can whiten tooth colored fillings, crowned (capped) or veneered teeth. This is one more reason to seek the advice o f a professional before using any whitening product. As part of your treatment plan, your dentist will advise you on esthetic options to ensure an overall beautiful smile. How long will your teeth stay white? Your teeth are as individual and unique as you are and, therefore, your actual results may vary. However, in general, whitening results can and do last up to 2 years assuming good hygiene and reasonable exposure to staining foods or beverages. With periodic touch-up applications and regular dental hygiene visits, your whiter, brighter smile will last indefinitely.  more