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Treatment Listing > Bleaching

What is the right way to bleach teeth at home?

Trading standards Institute from England found many samples that contains excessive hydrogen peroxide in hundreds times. In long-term use, this chemical can cause canker sores, lip sores, gum disease, tooth sensitivity, vomiting and some types of cancer. This information has left many concerns for people that have the habit of whitening teeth at home. Is it safe enough?


Concentrated hydrogen peroxide, or 'high-test peroxide' which is the main component in teeth whitening product nowadays is a highly reactive chemical containing hydrogen and oxygen. Hypothetically, it is the best effective whitening chemical that does not damage your teeth. However, If it is used in long period of times with high concentration, it can damage your teeth and other organs like mouth, tongue, gum,...

Be careful with the medicine bleaching

The hydrogen peroxide gel used during teeth whitening activated on the protein of the enamel by cutting the long chains of proteins. There is no reaction on the other structures of the enamel.

Bleaching has two kinds. The first one is to used gel that has low hydrogen peroxide concentration (10-15%), usually it is conducted by users. The second form is high concentration gel (15-25%) which has to be conducted by dentists. Dentists are the one that determined suitable concentration for their patients. Oral check, cleaning and sterilization may need to be conducted prior to peroxide application.

It is hard to identify the concentration of hydrogen peroxide of unofficial products. Besides, be careful with some whitening toothpastes that contain low concentration hydrogen peroxide and abrasives. If they are used regularly, enamel layers can be thinner and your teeth will be stained forever instead of white.

At-home teeth whitening should be consulted by doctors.

Any kind of teeth whitening products are relative. The effectiveness depends on enamel, age and a topic of each person. You should not put too much expectation after bleaching. You had better use teeth bleaching when you are over 16 years. The older you are, the harder to have teeth whitening because your enamel has been weaken through times, which lengthen your whitening time.

Each person’s enamel has their own limit. If you already whiten your teeth but not effective, then your enamel has reached its limit, you should stop.
In addition, bleaching is not only for once. 2 - 3 years later after having bleaching, your teeth still can be stained again. It depends on your diet, dental care and the nature of your teeth. If you really want to whitening your teeth, alter your enamel is the only way.

Teeth bleaching at dentists’ can be done once or few times depending on your level of stained teeth. It could last maximum of 5 years according to your enamel. Your teeth can face slight sensitivity during or after bleaching but it is temporary and finish after treatment.

At-home teeth whitening is a good way but it has to be under doctors’ instruction and to avoid touching gels on tongue and gums. If you have any unusual situation, stop applying product and report to your doctor. You should not use any toothpaste or medicines that has unidentified origins, unknown components and dosage.

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