Laser Teeth Whitening Science
Before we go too deeply into teeth whitening science, let’s look at how our teeth become discoloured, to begin with. Each tooth is made up of two layers, the outer enamel layer, which protects the tooth, and the inner layer called the Dentin. Gradually the food and drink we consume forms an additional layer called the Pellicle film. Brushing your teeth and regular trips to the dentist is somewhat helpful at scrubbing away the film. The problem is, over the years the pellicle properties have gone deep into the enamel, and due to the permeable nature of this layer, the stains settle deep into the tooth, which cannot be simply brushed away.
Laser tooth whitening is highly effective at removing stains (see research). Each treatment begins with a full consultation, enabling us to assess your goals and the desired outcome. Once you have made yourself comfortable, a technician will place a mouth retractor around your lips and begin creating a gum dam. This will protect your gums from the whitening gel that consists of chemical agents (peroxide). The gel is designed to break down the staining composites with a chemical reaction called oxidation.
A laser will then be placed over your teeth assisting the gel and breaking down the staining composites. The entire experience will last approximately 1 hour; during the treatment, patients can relax and enjoy a little music.