Exogenous tooth yellow has a lot to do with personal eating habits and living habits. If the habitual diet contains pigment, but we don't have the habit of cleaning our mouth carefully and washing our teeth regularly, the pigment will precipitate on our teeth over time, causing tooth discoloration. In this case, you can consider washing your teeth first, which can effectively remove the stains on your teeth and restore their original color. If you are still not satisfied with the color of your teeth after cleaning, you can consider cold light whitening. Cold light whitening is called a fast and safe tooth whitening technology. Simply put, it is to apply some medicine to the teeth and then irradiate them with cold light.

Within one hour, the tooth color can improve the level of 5- 14 vitamine. (The specific effect varies from person to person) Endogenous tooth yellow mainly includes dental fluorosis and tetracycline teeth. Cold light whitening can be considered for mild tetracycline teeth and dental fluorosis. Severe dental fluorosis and tetracycline teeth can be modified with all-ceramic veneers. But you can't judge the cause of yellow teeth yourself, so if you want your teeth to look healthy and beautiful, you must see a dentist for symptomatic treatment. Endogenous coloring is formed during tooth development-if tetracycline is deposited in the teeth, resulting in hypoplasia of enamel, the teeth will turn yellow or dark gray, which is called tetracycline teeth.

Tetracycline teeth are usually caused by tetracycline drugs taken in childhood or during pregnancy, which are very common in the generation born in1970s and1980s. If the drinking water at home contains too much fluoride in childhood, dental fluorosis will also occur, that is, chalky and yellowish brown patches on the tooth surface. Exogenous coloring, because there are many kinds of bacteria on the surface of teeth, they secrete a lot of sticky substances, and some minerals in daily diet, cigarette stains and drinking water are adsorbed on these sticky substances, which gradually turn teeth yellow or black. Coffee, red wine, tea, smoking, chewing mustard, etc. Are the chief culprit of exogenous coloring.

There are usually two ways to improve discolored teeth: cold light whitening and restoration. The principle of cold light whitening is to apply oxidant to the surface of teeth, and use high-intensity blue light to make the oxidant penetrate the enamel and enter the deep layer of teeth for decoloration. Cold light whitening has limited improvement on chromaticity, which is unfavorable to moderate and severe endogenous coloring. It can only improve the color of teeth, but not change the shape of teeth. For people who have seriously colored teeth and want to make their teeth beautiful, they can choose porcelain veneers. Porcelain veneer is an important means of oral aesthetic restoration. By grinding off a thin layer of enamel and sticking a porcelain veneer, the ideal aesthetic effect can be achieved, the color and shape of teeth can be changed, and the gap between teeth can be narrowed. The damage to teeth is far less than that of porcelain crown restoration, and it is especially suitable for severe dental fluorosis, tetracycline teeth, tooth defects, excessive teeth gaps and so on.