For those people who have discolored teeth, a tooth bleaching is the most common method that is prescribed by dentist to treat those yellowish teeth. This procedure uses a chemical to lift up staining substance to enhance the appearance and value of their smile. White teeth can dramatically enhance your personality and confidence. For those people who value first impression, having a great set of white teeth can really help. Whether done by professional dentist or even in your own home, having white teeth can be achieved especially if you take good care of you oral hygiene. But you should also know that having white teeth without a good dental health won’t last long.