My teeth are yellow. I want to do cold light tooth whitening. Will there be side effects? How many years can it be guaranteed? how much is it?
Cold light tooth whitening has side effects, but it is small. Keep 1-2 years or so, the price is more than 1-2 thousand, and the fees vary from place to place.
In fact, you can do a new plastic braces, without grinding your teeth, just by impression, twice, about an hour and a half.
As white as you want. There are many colors to choose from.