It is a procedure aims to get rid of dental pigmentation in addition to giving a more white and bright color to the tooth by applying chemicals that oxidize the pigmentation.
Bleaching materials, which are derivatives of hydrogen peroxide, reach the discolored dental tissues, as the material enters the organic mold due to its low molecular weight, which allows the interaction between the active ingredient and the colored particles to occur and remove them through the oxidation of organic pigments.
Bleaching techniques are categorized based on their in-clinic or out-of-clinic applications.
A dental print is taken of the teeth and sent to the laboratory to make special molds in which the bleaching material is placed in and then applied to the teeth for a certain period.
The time of application is determined based on the type of material used and the nature of the patient’s life. It is preferable to apply the mold once at night before going to sleep, and in the morning the patient cleans his teeth with brush and water.
The duration of treatment ranges from one to two weeks, and in some cases, it can last for several months.
It is preferable to whiten each dental arch separately and start with the upper jaw and compare it to the lower jaw.
If any side effects occur, such as dental sensitivity or gum irritation, the patient must stop the treatment and tell the doctor.
The lip and gum are initially protected, and then bleaching material is applied in a form of pastes or gels, most of which contain 30-35% hydrogen peroxide.
The use of light to activate the reaction does not improve the result, but used to generate heat which speeds up the oxidation reaction, and on the other hand, it causes the tooth to dry out more, that increases sensitivity and the occurrence of immediate bleaching.
Heat can be dispensed. We can stimulate the bleaching material by moving it on the surface of the tooth with a cotton swab, and thus we get the same result without any damage to the surrounding tissues.
As for the laser use, it plays the role of light itself in accelerating the reaction, and take into consideration the possibility of its impact on the dental and pulp tissues.