Hydrogen peroxide, the active ingredient in over-the-counter whitening strips, may be harmful to the layer under the enamel of teeth, according to research
presented Tuesday at a scientific meeting.
Teeth are made up of three layers: the outer enamel, an underlying dentin layer and connective tissue that binds it to the gum. The middle layer, dentin, is rich in proteins, of which collagen is the most abundant.This affordable at-home teeth whitening kit is a game-changer Most studies on the safety of hydrogen peroxide have focused on enamel. The chemical is known to penetrate the enamel and reach the dentin, although in miniscule amounts, explained Dr.
"The tooth-whitening products that the abstracts are talking about have been around for decades and used by millions and millions of people," he said. "As far as the integrity of the tooth being damaged, that has not emerged."The most common side effect that dentists see after the use of whitening strips is tooth sensitivity, which is transient and does not represent underlying damage of the tooth, he said.
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