caption: Like any other part of our beauty and wellness routines, our smile needs to be maintained to look its best and brightest. Of course, dentists perform in-office whitening treatments in a matter of minutes--but they're pricey. The good news is there are a number of effective, lower-cost options you can try from home when an appointment is out of the question (or out of your budget). Read on for dentist-approved recommendations, and more of the best teeth whitening kits to try at home.