How Does Teeth Whitening Work?

First, you will be escorted to a portable dental chair and meet with a professionally trained staff to whiten your teeth. He or she will place a material on your gum tissue to protect it from whitening agents, which is called a barrier.


When the professional applies a whitening agent to the teeth, he/she will place a UV light over your teeth. The only thing you need to do is to keep your mouth open. This process lasts approximately 90 minutes. During that time, you are likely to watch movies or TV shows. Some patients even read or work.

At the end of the procedure, the dentist will place fluoride and other chemicals on the teeth to prevent any potential sensitivity you may encounter later.

As you see, Teeth Whitening is a relatively simple, “in-and-out” process.

How Do The Agents Work

In short, whitening agents are bleaching chemicals that are engineered to initiate a chemical reaction when exposed to enamel. This reaction destroys the dyeing compounds on the teeth, which tend to accumulate and stain the teeth after years of consumption of coffee, red wine and ketchup.

The tooth whitening agent most likely to be used by a dentist in a professional procedure contains one of two chemical agents: carbon peroxide or hydrogen peroxide. Hydrogen peroxide is the main active whitening agent. When you use carbon monoxide in your mouth, it breaks down into hydrogen peroxide and urea, whitening your teeth.


In general, the patient’s teeth will be 2 to 3 shades whiter when they leave the dental office. People feel younger, more confident and happier with the new bright pearl white. Keep in mind that some patients do have sensitivity to tooth whitening. But those patients tend to have sensitive teeth.

The teeth whitening seems to be a simple, relaxing process that really works. But during the process, the dentist will need a lot of dental equipment, such as the dental chair, oral surgical light, and most importantly, the dental led whitening machine, all of which can be purchased from the best China dental supplier –

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