Thursday, January 5, 2012

Discolored Teeth?


What Causes Discoloration?
While people have different colors of skin and hair, they also have genetic differences in tooth color. Some teeth are more yellow, while others yellow with aging. Natural tooth color can be discolored by a number of causes. The surface of the teeth can be stained by tobacco, coffee, tea, berries and other foods as well as by deposits of calculus (which is better known as tartar).
Discoloration of the tooth internally can also result from aging, injuries, excessive fluoride, certain illnesses and taking antibiotic tetracycline during early childhood. Although bleaching successfully lightens most discolorations, certain types (like those caused by tetracycline) are more difficult to remove.



Chairside Whitening
There are two types of whitening procedures. Whitening may be 
done completely in the dental office (known as “chairside whitening”)
 or a system may be dispensed by the dentist to use at home 
(called “in-home whitening”).
Chairside whitening takes from 30 minutes to one hour per visit. It is not uncommon for the 
teeth to become slightly sensitive following whitening treatments. To protect the mouth, a 
 gel-like substance is applied to the gums and a rubber “shield” is placed around the necks 
of the teeth. A chemical solution, the oxidizing agent, is painted onto the teeth. A special light
may be used to activate the agent.

Before




After








To achieve the best results, teeth may be whitened a shade lighter than the desired since
 they will tend to darken slightly with time. Generally two to ten visits may be necessary to 
 complete the process of chairside whitening.


In-home Whitening
With in-home whitening, the dentist makes an impression for a model of the teeth, fabricates a custom-fitted tray and prescribes a whitening agent that comes in the form of a bleaching gel. The gel is placed in the custom-fitted tray and worn up to two hours daily or at night for about two weeks. The amount of time the custom-fitted tray is worn and the duration may vary according to a person’s individual need and the recommendations of the dentist. The dentist will monitor the entire process of in-home whitening to assure its effectiveness and safety.
Over the counter products that are self-administered are not recommended, although they may appear to cost less. Whitening treatment should be done under the supervision of a dentist following a proper exam and diagnosis. Whiteners with the ADA Seal of Acceptance have proven to be safe and effective.
  




Who Can Benefit?
Most whitening procedures last one to three years, although in some situations it may 
last longer.
Some people, with certain dental conditions, may not be good candidates for this type of
 whitening. People with gum recession, for example, may have exposed root surfaces that
 are highly sensitive and could be further irritated by the ingredients in the whiteners or 
bleaching components. In addition, these products are not recommended for habitual
 tobacco and alcohol users.
Brushing and flossing, twice a day, as well as regular professional cleanings, along with 
occasional touch-up treatments will help keep teeth white. An attractive smile increases 
 self-confidence.


How Long Whitening Lasts?
Whitening usually lasts between one and three years. However, it is important to:
- Brush twice a day
- Floss once a day
- Have regular cleanings at your dentist’s office
- Ask your dentist about any concerns you may have
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