But dental professionals are divided as to the effectiveness of paint-on whiteners. Some consider them useful adjuncts to in-office or tray bleaching. Others have yet to see any meaningful results with these whiteners.
Technically speaking, all toothpastes are whitening toothpastes, since they remove surface plaque and debris. But only a few contain key whitening ingredients: chemical bleaching agents and abrasives in high concentrations.
When used regularly, these toothpastes may offer backup support for tooth whitening.
Of course, given that brushing time is limited to a minute or two, that support is minimal.
But since we all brush every day, some consider whitening toothpastes to be potential whitening enhancers. Because toothpaste foams all over the mouth and is swallowed, the percentage of any bleach it contains is low, to avoid irritation.
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