Teeth whitening products may be more dangerous than previously thought.

According to a new study conductedScientists from Stockton University in New Jersey, teeth whitening products are far from being harmless, as medical organizations say. They warn about side effects such as increasing the sensitivity of the teeth and the possibility of inflammation of the gums, but speak of them as problems that eventually disappear by themselves. Meanwhile, hydrogen peroxide, which is part of the bleaching agents, can damage the dentin, the bone substance of the tooth, located under the enamel.

Previous bleach safety studiesFunds focused on the effects of hydrogen peroxide on the tooth enamel, but no one thought about how it reacts to the internal parts of the teeth. Researchers from New Jersey already suspected that peroxide easily penetrates to the dentin, but this time they decided to find out exactly how it affects collagen - a protein that is the most important part of the bone substance.

To find out, scientists have taken teeth removed.patients and treated them with whitening strips sold in pharmacies. Having loaded them in tanks with artificial saliva, the researchers followed the instructions and left them for an hour. After the time, the teeth were extracted and evaluated for the amount of collagen. It turned out that after bleaching it really becomes less, and the repeated procedure each time reduces its concentration more and more.

Researchers believe that in moderateusing whitening strips is not a big deal. The fact is that the bone tissue of the teeth over time is produced by the pulp of the tooth, and the amount of collagen is gradually restored. However, this requires quite a lot of time, so it is recommended to perform bleaching as rarely as possible.

Also, researchers warn that people withIt is better not to use bleaching agents with the removed nerves of the teeth. This is due to the fact that these teeth are unable to restore collagen, and the use of funds can destroy teeth.

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