teeth whitening
In-Office Tooth Whitening. Teeth whitening done by your dentist can get teeth brighter faster. The bleaching solution is usually much stronger than at-home kits. Also, heat, light, or a combination of the two may be used to speed and intensify the whitening process. The most dramatic results -- teeth generally get three to eight shades brighter -- usually take several 30- to 60-minute in-office visits.