Teeth Whitening Pen

Teeth whitening refers to the process of placing chemical oxidative bleaching drugs on the surface or inside of the teeth, chemically reacting with the teeth to whiten the color of the teeth, or using objects to adhere to the surface of the teeth to cover the true color of the teeth, so that the color of the teeth becomes white. Teeth whitening methods mainly include cold-light whitening, laser whitening, and ultrasonic cleaning.

Causes of tooth discoloration

Why do teeth turn yellow? In fact, the color of teeth we see is not only the color of the surface of the teeth, but also the color of dentin that appears through the enamel on the surface of the teeth. Baby teeth are milky white when they are young. As they age, the teeth will gradually turn yellow.

There are many reasons for tooth staining and yellowing. Generally speaking, they are divided into two types: endogenous and exogenous:

Exogenous staining is due to the presence of a variety of bacteria on the surface of the teeth, which secrete a lot of sticky substances on the surface of the teeth, tea dirt, smoke stains in the daily diet, and certain minerals in drinking water and minerals in people’s saliva Adsorbed on these sticky substances to form plaque and tartar, gradually make teeth yellow or black.

Intrinsic staining is formed during the development of teeth. If tetracycline is deposited in the dentin, it will turn the teeth into yellow, brown or dark gray, called tetracycline teeth; if there is too much fluoride in the drinking water, it may be possible Causes dental fluorosis, the tooth surface is white chalk-colored, tan plaque; if the tooth is necrotic, the combination of hemoglobin and bacterial decomposition products can also make the teeth black.