A study conducted by Canadian experts reveals the significant harm that conventional tooth-whitening chemicals may inflict.
The research, which was published in Scientific Reports, was conducted by a team from the University of Toronto and examined the tooth cell damage induced by carbamide peroxide teeth-whitening procedures.
It was discovered that a suggested application of 10% carbamide peroxide gel on teeth (35 percent carbamide peroxide gel may be bought online) decreases the protein composition of the enamel by up to 50%.
Lead researcher A/Prof Laurent Bozec stated that they’ve long been curious about the impact of peroxide-based teeth whitening on the dental structure and its relationship to sensitivity.
He added that they wanted to learn more about the effect on the enamel itself and deep into the pulp here.
Before this research, A/Prof Bozec investigated the impact of hydrogen peroxide in root canal therapy and discovered that it was producing local collagen degradation. This prompted him to look at how peroxide penetrates the enamel and dentine before reaching the tooth pulp and what harm it may do along the route.
According to the research, the decrease of enamel protein content resulted in increased penetration of the whitening chemical within the tooth, which may lead to an increase in dental pulp cell death.
The measurements were taken in an in-house dentine perfusion chamber. According to the researchers, the dental pulp cells could not survive the exposure at carbamide peroxide concentrations of approximately 35%.
A/Prof Bozec said that many home tooth-whitening solutions contain such high concentrations of peroxide gel—for example, 35%—yet nothing is known about what it does to the interior of our teeth.
He added that they think this is the first research of its type to demonstrate the toxicity of using a tooth-whitening chemical. As a result, they hope consumers choose a tooth-whitening solution with a lower percentage of peroxide since it is less damaging to their teeth.
