Among the major risks resulting from this: dental hypersensitivity during the pose, burns at the level of the gums, or a retraction of these. “Hydrogen peroxide acts faster but induces more sensitivity”, explains Dr Éric Bonnet, dental surgeon, who has been practicing and teaching bleaching techniques for over thirty years.
But also, an aggravation of an existing undiagnosed pathology in the patient: “On a decayed tooth, hydrogen peroxide, even at low concentration, will penetrate very deeply and cause mortification, that is to say a loss of vitality. If you also have inflammation of the gums, he will increase it”, says Dr. Christophe Lequart, public spokesperson for the French Union for Oral Health (UFSBD).
Finally, a degradation of the tooth enamel is also possible, as well as a drying out of the teeth, especially when an LED lamp is used. A useless gadget, however, according to 60 million consumers. “There was a European consensus on the subject, which concluded that these lamps were totally useless in the context of money laundering”, says Dr. Éric Bonnet. “It’s a marketing gimmick.” According to the specialist, a tooth that is dried (with a light, for example) takes on a lighter shade as it dehydrates, but quickly regains its initial color with saliva.
