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Teeth Whitening

Tooth whitening  is a cosmetic dentistry procedure that lightens  teeth and helps to remove stains and discoloration.

It is the most popular treatment by both men and women alike and the treatments available range from one-hour one-time dental visits to take-home do-it-yourself kits.

Tooth whitening is popular because it can significantly  improve the appearance of your teeth at much less cost and inconvenience than other techniques.  

Types of Tooth Stains

There are two types of staining as related to teeth: Extrinsic Staining and Intrinsic Staining

Exrinsic Staining – 

Extrinsic stains are caused by external factors such as coffee, red wine, tea, other dark-colored foods and drinks, tobacco and routine wear and tear.

Essentially they are a natural part of life but they are unsightly and can be removed.

Superficial extrinsic stains can be removed with good hygiene techniques such as regular brushing and dental check-ups with cleanings. 

More stubborn stains can be removed with more involved efforts like teeth bleaching or whitening.

Intrinsic Staining 

Intrinsic stains occur much deeper in the tooth than extrinsic stains, forming in the interior of teeth. They can result from trauma, aging, 

exposure to minerals (like tetracycline), 

during tooth formation and/or excessive ingestion of fluoride.

Teeth Whitening vs. Teeth Bleaching

According to the FDA, the difference between bleaching and whitening is that the term “bleaching” is permitted to be used only when the teeth can be whitened beyond their natural color and when the products contain bleach.

 

Whitening refers to restoring a tooth’s surface color by removing dirt and debris.

 

 

The terms are generally mistakenly used interchangeably even though they have different meanings. 

Whitening sounds less harsh than bleaching and therefore is used even when products contain bleach. 

It really is a marketing technique more than anything else although there are some distinctions that should be made between over-the-counter (OTC) whitening and dentist bleaching, including:

Strength of Bleaching Agent

Typically OTC products and take-home products usually contain 3% to 7% hydrogen peroxide bleaching agent whereas in-office teeth whitening products contain 15% to 43% hydrogen peroxide.

 

Mouthpiece Trays- Mouthpiece trays from the dentists as opposed to OTC trays are custom molded to fit the exact impression of your teeth. 

This allows for maximum contact between the whitening gel, which is applied to the mouthpiece tray, and the teeth.

 A custom mouth tray also minimizes the gel’s contact with gum tissue, which can lead to gum irritation that may be associated with trays that are not custom-made.

Strength of Bleaching Agent

Strength of Bleaching Agent- Typically OTC products and take-home products

usually contain 3% to 7% hydrogen peroxide bleaching agent whereas in-office teeth whitening products contain 15% to 43% hydrogen peroxide.

 

Mouthpiece Trays- Mouthpiece trays from the dentists as opposed to OTC trays are custom molded to fit the exact impression of your teeth. This allows for maximum contact between the whitening gel, which is applied to the mouthpiece tray, and the teeth. A custom mouth tray also minimizes the gel’s contact with gum tissue, which can lead to gum irritation that may be associated with trays that are not custom-made.

 

Additional Protective Measures– In an office setting, the irritation and concerns associated with the gums from gel contact is protected by your dentist as an extra preventive measure.

 

Supervised vs. Unsupervised Process– a dentist-supervised at-home or in-office treatment may be safer because it allows the dentist to view your medical history and determine which course of whitening treatment is most appropriate for you. With OTC treatments, you are left on your own.

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