Without maintaining good dental hygiene, plaque, tartar and staining foods and beverages can nullify the investment that you have made on your teeth. As plaque and tartar can cause tooth decay and cavities, these bacterias are also responsible for masking, and possibly even eliminating, any whitening that you have done on your teeth.
On account of this, your teeth will not be as white as they were after the Zoom treatment. You can begin correcting this situation by making certain that you floss frequently, and take the time to brush at least two times a day. Making use of a modular toothbrush can help make certain that you are removing as much plaque as possible from your teeth. If you have a problem with tartar, you will need to go to your dentist to have it removed, as tartar cannot be safely removed at home.
Another possibility if you have discovered that your teeth are not as white as they were after your zoom treatment is the fact that the process does fade after time. When you had the Zoom teeth whitening process done on your teeth, you should have been given a take home tray and kit to touch up the whitening on your teeth. If you have not used this kit yet, it is quite possible that this is one of the causes of this problem. With a little time and research, you should be able to identify the source of the problem and remove it.