Your smile creates an immediate, subconscious, visual impact on people you meet. A brighter smile gives the impression of youth, vitality, radiant health, happiness, and warmth. A bright smile is perceived as a healthy smile.
Deciduous (baby) teeth are typically whiter than the adult teeth that appear later. As we age, our adult teeth often become darker, yellower, or stained. This is partly why white teeth make people appear more youthful.
Just as there are a number of ways to lighten or brighten teeth, there are also several different ways for teeth to become discoloured. The main causes of darkened teeth are genetics, antibiotics, and certain foods, plus teeth tend to darken as we age. Internal tooth discolouration is caused by changes in the enamel of the tooth and the dentin. The main causes of internal tooth discolouration are exposure to high levels of fluoride, tetracycline, use of antibiotics as a child, developmental disorders, tooth decay, restorations, root canal issues, and trauma.
External tooth discolouration is caused by factors outside the body, mainly foods and tobacco. The main causes of external tooth yellowing are smoking, foods with tannins, coffee, tea, carrots, oranges, and other foods.
Professional tooth whitening in a dental office is the preferred whitening method because even though stronger agents are applied, the rest of the mouth, including the gums, is protected from these materials. In-office whitening affects only the front eight teeth and is a great jump start for take-home whitening, which is always part of an effective whitening program. Tooth whitening can last for one or more years, depending on how well you take care of your teeth, and if you’re following up regularly with a home whitening product for regular maintenance.(*) Actual patient after treatment, results may vary