"Bleaching [your teeth] is probably one of the most significant changes that you can make," says Beverly Hills-based general and cosmetic dentist Dr. Arthur Glosman. "But whenever you're going to do any type of teeth whitening, it's always best to get some kind of consultation with your dentist first." However, what are the advantages of having your dentist do it as compared to doing it yourself? While both techniques can indeed work and have their advantages, see some reasons you might get better, longer-lasting results from a professional treatment when you read more.