Nothing says youth, confidence, success, and intelligence like a bright white smile. Research shows the appearance of your teeth affects how people view you. Not to mention, it also influences how you feel about yourself. Teeth whitening is an excellent solution to combat stains and discoloration. Although it may seem like a relatively new treatment, it has a rather lengthy history. Thankfully, you don’t need to use urine to brighten your smile anymore. Here are some of the top changes that have paved the way for the results you achieve today.