The American Dental Association says that due safety concerns from bleaching materials, pregnant women should delay any teeth whitening procedures until after giving birth and finishing breastfeeding.

Those who have been diagnosed with melanoma or skin cancer.

Anyone with periodontal disease, cavities, or exposed roots.

People who are allergic to peroxide or have overly sensitive teeth.

This can make your teeth look mismatched, but your dentist may be able to develop a plan to give you consistent results. People who’ve had restoration work like fillings, crowns, and implants may not be good candidates because those inorganic elements (i.e., not your natural teeth) aren’t receptive to whitening. Patients whose teeth have yellow tones are more likely to respond well to Zoom. The best candidates for professional teeth whitening have healthy teeth and gums, without old fillings or restorations.

A substantial percentage of RealSelf members say they weren’t impressed with the results: more than a third rated Zoom “ Not Worth It,” saying they didn’t get the promised result or came away with too much sensitivity.Teeth whitening treatments like Zoom aren't recommended if you’re pregnant or nursing.This doesn’t mean that Zoom whitening won’t work, just that researchers didn’t find any perks of light activation for any whitening method.

Zoom claims the blue-light system activates the hydrogen peroxide, but research published in the Journal of Evidence-Based Dental Practice shows no added benefit from light-activated whitening systems.“If you’re planning to have any dental work done, do the whitening beforehand,” says Dr. Dental crowns and fillings don’t respond well to the Zoom whitening gel, so if you have them, your tooth color might end up looking spotty.A Zoom whitening procedure can increase tooth sensitivity, especially if you already have sensitive teeth or gums.Dentists recommend waiting three weeks between procedures. If it’s done prior to dental bonding or porcelain veneers, Zoom can improve the overall cosmetic result.The latest version of Zoom has three different intensity settings on the light to reduce the risk of sensitivity.

The entire procedure is completed in a single one-hour visit to the dentist.

Zoom teeth whitening groupon