The easiest thing to say about tooth whitening is that it is the easiest way, most non-harmful way and least expensive way to change your entire smile. No drilling is necessary. The cost is the same as one small regular filling. It changes the color of your entire smile and for a lot of people, it’s a big enough change that they need no further improvements to their smile. From a conservative standpoint, there is no other technique in dentistry that does so much without damaging your natural teeth.
It’s the one dental service I can wholeheartedly endorse since it leaves your natural teeth in the same physical condition as they were before the whitening, just brighter than before.