As the saying goes, “beautiful teeth are first, white teeth are seven times more beautiful”, in many cases your smile is the first impression you leave to others, and white and straight teeth are not a charming scenery! Because of the lack of neat and white teeth, you are “ashamed” in many important occasions, your smile becomes less bright. For this reason, there are more and more people who want to have their teeth beautified nowadays. So how can you have a mouthful of white teeth? 1, teeth are not the whiter the better experts reminded that the teeth whitening to have the right understanding. Just as there are individual differences in skin color, there are also differences in the whiteness of each person’s teeth. We should not just pursue “white”, but get out of the misconception that “the whiter the better”. The color of your teeth that suits your skin tone is the natural, coordinated beauty. 2, whitening teeth to choose the right method First, we should understand the reasons for their own teeth are not white enough. In medical science, simple yellow, dark and discolored teeth are collectively called tooth coloring. It is generally divided into two kinds of exogenous staining and endogenous staining. Simply put, exogenous staining refers to the “external staining” of teeth, mainly due to food coloring, tobacco stains and so on. Endogenous staining, on the other hand, is due to the abnormal color of teeth caused by taking certain drugs or drinking water during the period of tooth development, such as tetracycline and fluorosis. In fact, for exogenous staining, brushing is a basic method that is easy to do and effective. By removing the stains and discoloration deposited on the surface, you can restore your teeth to their natural, native whiteness. Some toothpastes also add some effective ingredients to slow down the formation of calculus and inhibit the adhesion of pigments such as tobacco and tea scum on the tooth surface. Choose the right toothbrush, master the correct method of brushing, to achieve effective brushing. Drink less coffee and colored drinks, smoke less and chew betel nut to reduce pigmentation. In addition, you can also go to the hospital to clean your teeth. A scaling is also a thorough brushing by a doctor to clean up the subtle areas that you usually ignore or are inconvenienced to brush. But for endogenous stained teeth, the above methods can’t help. 3.Cold light teeth bleaching – the safest cosmetic dentistry method Experts suggest that for moderate and mild endogenous tooth discoloration should first try conservative treatment (cold light teeth bleaching) as appropriate. Cold light teeth whitening technology is a specific wavelength of high-intensity blue light, through the fiber optic conduction, through two 30 multi-layer coated special optical lens, and then after special optical treatment, to isolate all harmful ultraviolet and infrared rays, the main body of hydrogen peroxide and silica 20 nanometers in diameter whitening agent, rapid oxidation reduction effect. Through the dentinal tubules, the pigments on the surface and superficial layers of the teeth are removed, thus achieving the whitening effect. The operation time of bleaching does not need to be long, only 30 minutes. The low temperature cold light completely avoids the stimulation of the dental nerve during the operation. Therefore, cold light teeth bleaching has the characteristics of remarkable effect, fast and safe. Experts remind that cold light is not really a light without temperature. Before the bleaching procedure, the patient’s gums should be protected by applying a gum guard on the gums. After cold light bleaching of teeth, it is recommended to avoid hot and cold drinks within 24 hours after treatment; within 24 hours after cold light whitening, teeth can be easily stained with colored substances again, so you must avoid drinking tea, coffee, cola, red wine drinks, colored toothpaste, mouthwash, etc. and eating dark-colored food, as well as avoid smoking; to prevent teeth from absorbing more pigments after cold light bleaching, it is better not to eat easily stained food for a period of time;. Regular dental checkups and scaling after cold light whitening can maintain the teeth whitening. In addition, because the endogenous discolored teeth are mainly affected by the deep dentin, so the effect of teeth after cold light bleaching is not durable, part of the “color rebound” phenomenon, and the cold light bleaching effect on the heavily colored tetracycline teeth, fluorosis teeth, etc. is very little. 4, all-porcelain veneers – the most fashionable dental cosmetic methods For heavily colored tetracycline teeth, fluorosis and other discolored teeth, or even accompanied by tooth loss, morphological abnormalities, all-porcelain veneers can achieve good treatment results. All-porcelain veneers are a cosmetic method that uses bonding technology to cover the discolored tooth surface with all-porcelain material to restore the normal shape and improve the color of the tooth, while preserving the living pulp and grinding less or no teeth. Finally, experts suggest that cosmetic dentistry should be performed: choose a standardized dental unit and listen to the advice of the doctor. According to your own situation, choose a conservative treatment method first.