Why Does Tooth Whitening Temporarily Accentuate Minor White Spots?
Although tooth whitening gels are applied wet, they actually dry out the tooth surface. White spots, calcium deposits or uneven areas of whitening may represent natural, pre-existing surfaces of softer, more penetrable tooth structure that have been deeply dried out by the tooth whitening process. These white spots may take up to a week longer to regain their original moisture and return to their natural color.
