What you need to do is see a dentist. A few years ago, one of my patients had a loose crown and continued to postpone having it recemented. He swallowed it during dinner one night and a $100 recementation became a $1000 new crown. These things do happen, so get it checked as soon as possible.
The best way to whiten a crown is to replace the crown with a crown made in a lighter shade. This is why it can be helpful to ask yourself if you like the color of your teeth before getting a crown done. If you'd like to have whiter teeth, it's usually better to whiten them and then...
Determining whether you have crowns or veneers is not difficult. Porcelain veneers are thin shells of porcelain that only cover the outside of your tooth. Crowns are pieces of porcelain that cover the entire tooth (360 degrees). If the inside portion of your tooth is still...