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Teeth Whitening: How Does it Work?

by Nathan Zachary
teeth whitening training

The phrase “teeth whitening training” refers to techniques designed to brighten and whiten a person’s natural teeth. Teeth are whitened by sanding away stains, bleaching, ultraviolet (UV) light therapy, and other methods.

There are a variety of teeth-whitening alternatives available, and you may test out several techniques at home. In addition, you may whiten your teeth at the dentist’s office.

Several teeth whitening treatments might cause tooth sensitivity and gum pain. Let’s analyze how teeth whitening training works, its safe use, and potential side effects.

Various tooth discolorations

To effectively whiten your teeth, you must choose a whitening method that targets the specific kind of stains you have. Choosing a whitening method that safely addresses both intrinsic and extrinsic stains is crucial if you have both types of discoloration (extrinsic staining is described below).

Consult your dentist if you are uncertain about the nature of your discoloration. They can advise you on the sorts of tooth stains and the most effective treatments.

Intrinsic stains

Intrinsic stains are those that reside inside the tooth enamel itself. Before a child’s teeth emerge from the gums, inherent discoloration may sometimes be seen.

These stains may be caused by antibiotic usage, excessive fluoride exposure, and age-related dental enamel weakening. In certain circumstances, intrinsic staining may even be inherited, according to a 2014 research.

Outside stains

Extrinsic stains are placed on the surface of your teeth. These are the outcome of environmental exposure to chemicals that discolor tooth enamel. This discoloration may be caused by smoking, caffeine, and food coloring.

According to the 2014 research mentioned above, extrinsic stains may also be associated with antibiotic use, similar to intrinsic stains.

Options for teeth whitening

Options for teeth whitening training include dentist-supervised professional teeth whitening and toothpaste containing whitening agents.

While some whitening solutions only bleach intrinsic and extrinsic stains to make things seem lighter in color, others remove extrinsic stains.

Hydrogen peroxide is a frequent component of over-the-counter (OTC) and professional teeth whitening products. Carbamide peroxide is another frequent oxidizing agent.

In more significant quantities, these compounds may be unfriendly and unpleasant to the body. Thus, you should use tooth-whitening products precisely as directed.

Discuss any sensitivity you have after using whitening solutions at home or while receiving them at the dentist’s office. Stop using the product and see a dentist if it causes tooth pain, gum inflammation, or bleeding.

Whitening products

Whitening toothpaste and mouthwash are over-the-counter whitening products. These substances may include baking soda, a mild abrasive used to remove stains. Some whitening kinds of toothpaste include charcoal, which has abrasive properties. Whitening creams may also include small amounts of carbamide and hydrogen peroxide.

Several abrasives may damage tooth enamel if used excessively or over a prolonged length of time.

The rough exterior of your teeth is enamel. According to the American Dental Association, enamel does not self-repair after it has deteriorated because, unlike other tooth components, it is not composed of living cells (ADA). Visit your dentist for guidance on utilizing abrasive whitening solutions properly.

Fluoride is often used in teeth whitening procedures to strengthen tooth enamel and prevent further staining.

Homemade whitening agents

Home whitening kits may come in strips, a paste, or gel applied to the teeth with a toothbrush.

In some at-home teeth whitening training kits, you apply a whitening solution to your teeth before placing a mouthguard over them. Some at-home kits use a heat lamp, blue light, or UV light to “radiate” the whitening paste inside the mouthguard. According to a small 2021 study, however, it is uncertain if this increases the gel’s effectiveness.

By preventing the bleaching agent from contacting the gums and maximizing its absorption on the teeth, a mouth guard may prevent the chemical from coming into contact with the gums. The ADA has approved gel containing 10% carbamide for use at home in overnight mouthguards, according to a 2019 research.


The concentration of the active chemicals in home-use whitening kits is smaller than that in a dental facility. Due to this, it will take many weeks of constant usage before you begin to see results. Most at-home whitening treatments guarantee effects within two to four weeks.

At the dentist’s office, whitening is performed.

Tooth whitening at the dentist’s office uses higher doses of the active compounds for faster results.

According to 2014 research, it may take numerous in-office tooth whitening procedures to get the desired amount of whitening. Because they are not part of a standard dental cleaning, these procedures may be costly and are often not covered by insurance. Power bleaching involves rinsing your teeth for 20 to 30 minutes with a powerful hydrogen peroxide solution at the dentist. Laser therapy is occasionally employed in in-office teeth whitening treatments, even though there are currently no conclusive data proving the unique whitening benefit of laser treatment.

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