Posts for tag: teeth whitening
Dental professionals sometimes use specialized words, and you may not be clear about exactly what we mean. Test yourself on some of the specialized vocabulary concerning tooth whitening. How many of the following can you define correctly?
A method of making yellow, discolored teeth whiter. It is relatively inexpensive and safe, with few side effects.
2. External or extrinsic staining and whitening?
Extrinsic staining mainly results from diet and smoking. For example, foods such as red wine, coffee and tea can produce extrinsic stain. Teeth with these stains are bleached by placing whitening substance in direct contact with the living tooth surface.
3. Internal or intrinsic staining and whitening?
Intrinsic tooth discoloration is caused by changes in the structure of enamel, dentin, or pulp tissue deep within the root of the tooth. When the discoloration originates with the pulp tissue, root canal treatment may be needed to whiten the tooth from the inside.
4. Chromogenic material?
Color generating material that may get incorporated into the tooth's substance. It can be a result of wear and aging, or can be caused by inflammation within the tooth's pulp.
5. Carbamide Peroxide?
A bleaching agent discovered in the 1960s and frequently used for tooth whitening. When used, carbamide peroxide breaks into its component parts, hydrogen peroxide and urea, which bleach the colored organic molecules that have been incorporated between the crystals of the tooth's enamel.
6. Power Bleaching?
This technique is used for severely stained tooth. It uses a highly concentrated peroxide (35 to 45 percent) solution placed directly on the teeth, often activated by a heat or light source. This must be done in our office.
An antibiotic used to fight bacterial infections. It can result in tooth staining when taken by children whose teeth are still developing.
8. Rubber Dam?
Use of strong bleaching solutions requires protection for the gums and other sensitive tissues in your mouth. This is done using a rubber dam, a barrier to prevent the material from reaching your gums and the skin inside your mouth. Silicone and protective gels may also be used.
9. Whitening Strips?
Strips resembling band-aids that you can use in your home to whiten your teeth. They generally contain a solution of 10 percent or less carbamide peroxide gel. When using them, be sure to read the directions and follow them strictly to avoid injury or irritation.
10. Fade Rate?
The effects of bleaching may fade over time, from six months to two years. This is called the fade rate. It can be slowed down by avoiding habits such as smoking, along with food or drink that causes tooth staining.
If you’re considering tooth whitening, you may be torn between using a home product and undergoing a professional application in our office. Here’s a brief comparison of both approaches to help you in your decision process.
It helps first to know what we’re trying to correct — that dull, discolored tooth stain. Tooth staining comes in two varieties: intrinsic, which occurs deep within the tooth and can be caused by aging, old root canal treatments, tetracycline antibiotic use or excessive fluoride intake during childhood development; or extrinsic, which occurs mainly on the tooth surface and is caused by substances like coffee, tea, wine or tobacco. Intrinsic stains can only be treated through an in-office procedure — the comparison we’re making between home and professional whitening refers only to extrinsic staining.
Whitening, then, is the use of a chemical agent to bleach those stains. The majority of both home and professional products use hydrogen peroxide or carbamide peroxide (which also contains hydrogen peroxide) as its primary bleaching agent. Depending on the application, either of these chemicals can effectively bleach extrinsically stained teeth. The two approaches differ, however, in the strength of the bleaching agent: home products usually contain a 10% or less concentration, while professional solutions usually contain between 15% and 35%. As a result, the home application takes longer than a dentist’s treatment to achieve desired results — two to three weeks as opposed to one or two office visits.
Whichever option you choose, remember teeth whitening isn’t a permanent solution. The brightness will fade over time — six months to a year if you restrict foods and habits that stain teeth. You can also receive a touch-up once or twice a year to help extend brightness.
There’s also a middle of the road option — you can use a home application with guidance from our office. It’s also a good idea to visit us for an examination beforehand — we can then advise you on what options will work for your particular type of staining and teeth condition.
If you would like more information on teeth whitening options, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine articles “Teeth Whitening” and “Tooth Staining.”
The “Hollywood Smile” — dazzlingly white — is associated in our society with youth, health and vitality. Achieving that smile through either professional or home whitening applications has become very popular.
Teeth become discolored or dull for a number of reasons. It can be something intrinsic with the teeth — changes in enamel or dental structure during development, inherited disorders, heavy exposure to fluoride or tetracycline, or changes in mineral structure or wear due to aging. It can also be extrinsic, resulting from environmental or lifestyle causes. Eating foods with tannins (red wine, coffee or tea) or carotene pigments found in plant foods like oranges or carrots, or using tobacco may all cause staining.
Most modern applications involve an oxidizing chemical (usually hydrogen peroxide) that bleaches the teeth. Professional applications in a dentist's office use high concentrations of hydrogen peroxide (usually 35 to 45%) applied directly to the teeth with control measures to protect the lips and gums. This type of application can lighten the color of teeth up to ten shades.
There are a number of home options too: whitening strips, “Paint on” or “Brush on” whitening, and even whitening gum. We can also provide you with a “Take home” kit that resembles the professional application but is generally less expensive. Although all these home applications are generally safe and effective, they typically take longer for results (several repeated days as opposed to about one hour for an office application), and not always to the same level of lightness as the professional.
Just about anyone can be a candidate for a whitening application. However, if you have thinner than normal dentin and more porous enamel, or suffer from gum recession or enamel loss, then whitening may increase tooth sensitivity. And, whitening is not a permanent solution: the brightness will fade over time, usually within a year. You can slow the fading by avoiding foods and habits that contribute to staining. It's also possible to touch up the initial whitening once or twice a year to extend the life of your new, bright smile.
If you would like more information on teeth whitening, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Teeth Whitening.”