The effect of the tooth whitening procedure is not permanent. The teeth will not return to their original color, however, the whitening effect will fade over time. Of course, the result of the treatment is maintained very easily with a repeated dose of whitening approximately once a year using a home whitening kit for approximately 7-10 days. The duration of the whitening treatment and the need for maintenance depends greatly on the individual habits of the patient. The more often teeth-staining foods and drinks are consumed, the faster the teeth will tend to return to their original color. Good oral hygiene also plays an important role in maintaining the result.