Teeth whitening (or so called bleаching) can be divided into three main types:
Office whitening. This type of whitening is done in the dental office. It takes 1 to 3 visits between 1 and 2 hours. A gel with a high concentration of whitening agent is used. Therefore, it should be applied only on the tooth surfaces, without touching the gum and the mucous membrane. The dentist isolates the teeth in a special way. Then he applies the whitening gel on the teeth and waits for 15 minutes, so that it can stay in contact with the outer surface of the teeth. The whitening gel is washed and the next dose is applied. And so until the desired effect is achieved.
Home whitening. This type of whitening requires the dentist to take the teeth prints and produce individual tooth shape reflecting trays. On the next day you get your trays along with the whitening gel. The concentration of the home whitening gel is much lower than that for in-office whitening. That is why, there is no need to protect the gums. You need to apply the whitening gel to the trays and put them on the teeth. This type of whitening is done according to a special scheme and lasts between 14 and 21 days in relation to the initial colour of the teeth and the colour you want to achieve. While the trays are in your mouth, you should not eat or consume liquids.
Endo whitening. This type of whitening can restore the colour of devitalized teeth. Such teeth are usually reddish-brown, greyish-black or yellowish in colour due to the materials that fill the root canals during the endodontic treatment. For the effect to last, the cause of the colouring must be removed in the first place. The root canals are filled with a material that does not change the colour of the dentine over time and then a whitening gel is applied inside the tooth. The gel is replaced every few weeks until the desired colour is achieved. The duration of such whitening depends on the type of the colouring agent and on the colour intensity.
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