Over the Counter Teeth Whitening vs. In Office Teeth Whitening

Over-the-counter (OTC) whitening products. The best-known OTC whiteners are strips—thin, cellophane-like tape that adheres directly to the teeth—and gel-filled trays, both falling in the $15-to-$50 range. The bleaching agent in these products can cause irritation or blotching if it comes in contact with the lips or gums, says Ross. To minimize that problem, manufacturers keep peroxide concentrations low, which means you should expect relatively slow, modest results. "The OTC products are ideal for someone going to prom in a week or needing a little touch up here and there,"

In-office whitening. You'll fetch the most dramatic improvement in the shortest time with bleaching procedures done at a dentist's office. But convenience and results come at a price—often between $500 and $1,000 and even more in major metropolitan areas. Some products, including Zoom and BriteSmile, make use of a high-intensity blue light or laser that purportedly activates the highly concentrated hydrogen peroxide solution and speeds up the process. This process is more controlled and perfect for those who have composite fillings and veneers that will not change color so that you don't over whiten your teeth. "Perfect for the person with no patience and wants them white right now."