Laser Teeth Whitening – Dental Treatment

Introduction –Laser Teeth Whitening

Laser tooth whitening is the fastest way to whiten the teeth. With increasing age, exposure to minerals causes the teeth to darken. Some foods, drinks, smoking or tobacco products impart yellowish brown color to teeth. Genetics play an important role. Some people have brighter teeth than others. Also, some medications or bacterial chemicals cause such discoloration. This can affect the appearance of a person.

The dentists have developed various techniques for treating discoloration and helping the smiles improve. Laser teeth whitening is an important technique for achieving this. But a few things should be kept in mind that the laser whitening is not a solution for all types of discoloration, for example, darkening caused by cavities or infection. Similarly, laser whitening does not work on all stains.

Laser bleaching procedure:

The teeth are first checked by a dentist before undergoing laser whitening. The dentist examines the patient thoroughly noting carefully the condition of teeth, presence of any restoration and its condition and also condition of other oral tissues. A history regarding general health and allergies as well as dental history should be taken. Some dentists also take a baseline X-ray to determine the condition of teeth and bones.

The process of laser does not need the extensive appliances as used in other whitening procedures.
This procedure of bleaching uses a whitening gel and a laser beam. First the translucent gel is applied to the teeth and then a laser beam is used to activate the crystals of the gel to absorb the energy from the light. This energy penetrates the enamel of the teeth and increasesbrightness of the teeth. The time period required for the procedure depends on the degree of discoloration of teeth.

Mechanism of action:

Laser whitening procedure is based on the principle that the large light absorbing molecules in the tooth are broken down into non-absorbing small molecules by the light. As a result, the incident light is reflected more causing the teeth to look whiter. The hydrogen peroxide in the bleaching agent reacts with the light and forms hydroxyl radicals which in turn produce water and oxygen radical.

These free radicals penetrate the tooth structure and breaks down the stains into smaller particles by rapid oxidation. The conversion of hydrogen peroxide to free radicals takes place in the light of wavelengths of about 400 to 560 nanometers. This is a process behind the laser whitening.


  1. One visit is sufficient for this process.
  2. The process of laser does not need the extensive appliances as used in other whitening procedures. No item should be placed in mouth for this. So there is less risk of ingestion of chemicals.
  3. The laser process works better than the whitening trays for people with sensitive teeth. For some patients with sensitive teeth, the whitening trays are painful.
  4. Laser whitening is an ideal process for people with a busy schedule. Also for some people who tend to forget things or equipment required for other methods of whitening, this process is more beneficial. The patient does not need to carry any equipment at home from the dentist.


  1. There is sudden change of tooth color which can be noticed by close people.
  2.  This is the more expensive than the other procedures available. The cost is almost double than that of whitening trays. But as the process becomes commoner, the cost will also decrease.
  3. The people who have gum diseases or some form of periodontal ailment are not good candidates for the laser process.

Cost of laser whitening:

Cost of the procedure depends on individual dentist and the country of living. Generally, the cost of the laser whitening is over 1000 dollars for the entire process. It is more costly than the chemical whitening, but the number of visits required is very less. This factor can decrease the overall treatment cost.


Patients can achieve up to 10 shades whiter from this mode of whitening treatment.  Laser whitening should be done only once every year. Results generally last for a period of 12 and 24 months.

- Link of interest: Twitter Laser Teeth Whitening – Dental Treatment.


This article is not medical advice nor a substitute to professional health advice. Always consult a doctor.

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