WHITE   TEETH  -  MAKE TEETH  THIER WHITEST

Teeth whitening methods

  Generally, adult teeth often become darker due to changes in the mineral structure of the tooth, as the enamel becomes less porous. Teeth can also become stained by bacterial pigments, food stuffs and tobacco. Certain antibiotic medications  can also lead to teeth stains or a reduction in the shine of the enamel.   Traditionally, at-home whitening is done with bleaching gel which is applied to the teeth using thin guard trays. Gels, overall are the safest and easiest to use.
 At-home whitening can also be done by applying small strips that go over the front teeth. Oxidizing agents such as hydrogen peroxide or carbamide peroxide are used to lighten the shade of the tooth. The oxidizing agent penetrates the porosities in the rod-like crystal structure of enamel and oxidizes interprismatic stain deposits; over a period of time, the dentin layer, lying underneath the enamel, is also bleached. Laser bleaching uses light energy to accelerate the process of bleaching in a dental office. The effects of bleaching can last for several months, but may vary depending on the lifestyle of the patient. Factors which will decrease whitening include smoking and the ingestion of dark colored liquids like coffee, tea and red wine. 
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Compare Teeth Whitening Methods
There are two main methods of gel bleaching—one performed with high-concentration gel, and another with low-concentration agents. High-concentration bleaching can be accomplished either in the dental office, or at home.
 Performing the procedure at home is accomplished using high-concentration carbamide peroxide ,which is readily available online or in dental stores and is much more cost-effective than the in-office procedure. Whitening is performed by applying a high concentration of oxidizing agent to the teeth with thin plastic trays for a short period of time. The application trays should be well-fitted to obtain the best resultsl. Trays will typically stay on the teeth for about 15–20 minutes. Trays are then removed and the procedure may be  repeated up to two more times. Most in-office bleaching procedures use a light-cured protective layer that is carefully painted on the gums and papilla (the tips of the gums between the teeth) in order to reduce the risk of chemical burns to the soft tissues. The bleaching agent is either carbamide peroxide, which breaks down in the mouth to form hydrogen peroxide, or hydrogen peroxide itself. The bleaching gel typically contains between 10-30% carbamide peroxide (15% is recommended) which is roughly equivalent to 3-10% hydrogen peroxide concentration. Low-concentration whitening is far less effective, and is generally only performed at home. Low-concentration whitening involves purchasing a thin mouthguard or strip that holds a relatively low concentration of oxidizing agent next to the teeth for as long as several hours a day for a period of 5 to 14 days. Results can vary, depending on which application is chosen, with some people achieving whiter teeth in a few days, and others seeing very little results or no results at all.  Click here to return..


   Dentists as well as some dental laboratories can fabricate custom fitted whitening trays that may improve the results achieved with an over-the-counter whitening method, although if cost is an issue, then home kits may be a better option.
Custom fitted whitening trays can also be obtained online, (home kits), and results in more evenly whitened teeth.  A typical course of bleaching can produce dramatic improvements in the cosmetic appearance of most stained teeth; however, some stains do not respond to bleaching. Some staining may require prolonged bleaching, as it takes longer for the bleach to reach the dentine layer. White-spot decalcifications may also be highlighted and become more noticeable. Bleaching is least effective if teeth have white spots, decay or infected gums. It is also least effective when the original tooth color is grayish. Bleaching is most effective with yellow discolored teeth. Laser bleaching, (which is many times more expensive) also known as power bleaching, uses light energy to accelerate the process of bleaching in a dental office. Different types of energy can be used in this procedure. The ideal source of energy should be high energy to excite the peroxide molecules without overheating the pulp of the tooth, creating an inflammatory response.  An argon laser is preferred over the use of an arc lamp (the more traditional dental method  of light bleaching) or infrared laser because it does not exhibit any of the heat or UV ray emissions of the arc lamp. Chemical burns, which are occasionally a side-effect of gel bleaching, or heat-induced sensitivity, are not a factor with argon laser whitening. Most laser teeth whitening treatments can be done in approximately 1 hour, in a single visit to a dental physician.
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