How to Get Whiter Teeth

If your pearly whites, well, aren't--blame it on caffeine, candy, prescription drugs or aging, all of which dull the gleam. Whiten and brighten dingy teeth with high-tech treatments in your dentist's office or over-the-counter bleaches you use at home. Here's how to bring that sparkle back.

1. Step1

   Ask your dentist if you're a good candidate for whitening, since results can vary. Yellowed teeth generally lighten well; darkened grayish or brownish teeth may not.

2. Step2

   Try over-the-counter products, which have low concentrations of hydrogen peroxide. A dental tray and gel kit can be used for a short time each day to lighten teeth one to two shades in two weeks, at best. Whitening strips cover the six front teeth--which must be even--for similar results, and keep peroxide on teeth and off gums. Paint-on gels get similar results and cover more teeth, but can be messy to use. Hydrogen peroxide works faster than carbamide (see Step 3), but takes longer to get results and deactivates faster. These are the least-expensive treatments to use when staining reoccurs due to beverages and smoking.

3. Step3

   Use a dentist-made tray at home twice daily for an hour for a couple of weeks, or wear it overnight. The gel's active ingredient is 10, 15 or 20 percent carbamide peroxide, which is gentler than hydrogen peroxide. Teeth could lighten several shades depending on the strength of the gel used. Higher percentages work faster but also increase the chance of teeth sensitivity. Ask your dentist for whitening products that include fluoride to reduce sensitivity. Cost: $300 to $450.

4. Step4

   Whiten your teeth by up to 10 shades in one 60- to 90-minute session with a potent, light-activated bleaching formula of 35 percent hydrogen peroxide. Cost: $500 to $1,100.

5. Step5

   Consider porcelain veneers or bonding if you have conditions where bleaching isn't effective, such as tetracycline or intrinsic staining. Bonding is a resin that's contoured over teeth. Veneers are thin porcelain manufactured in a laboratory. Cost: $500 to $1,500 per tooth for porcelain veneers, $150 to $300 for bonding.

6. Step6

   Keep in mind that two to three weeks of whitening by over-the-counter products equals one week of overnight tray treatment from the dentist--and may well equal one hour of the light-activated treatments