Choice of one Zoom Teeth Whitening or one Zoom Teeth Whitening for two. Benefits: Teeth whitening helps to restore a smile tainted by discoloration. In-office teeth whitening produces the fastest results and is the safest form of teeth whitening. How it works: Significant color change in a short period is the major benefit of in-office whitening. This protocol involves the carefully controlled use of a Zoom whitening gel, applied to the teeth by the dentist or trained technician after the gums have been protected with a paint-on rubber dam. A special lamp is combined with the Zoom whitening gel to remove stains. Generally, the gel remains on the teeth for several 15 to 20-minute intervals that add up to an hour at most. Before you go: It is recommended that you have your teeth professionally cleaned before Zoom whitening. You will want your teeth to be as clean as possible for treatment.