Yellow teeth are not all pathological, the teeth of the section to see, longitudinal section has three layers of tissue, the outermost is the enamel, varies from person to person, slightly different, because each person’s teeth are different degrees of calcification, some people’s teeth are milky white, some people are yellowish, which are healthy. There are many big yellow teeth are pathological, generally due to: 1, health factors: teeth in the development process due to poor nutrition or had a disease, will make the calcification of teeth affected, teeth will be yellow and brittle. 2, the factor of water quality: some areas, especially some mountainous areas, due to the high fluoride content in the water, too much drinking fluoride teeth will be yellow, and not 1-2 teeth, is full of big yellow teeth. Fluorine has the effect of anti-caries, so these people are not easy to have tooth decay (tooth decay). 3.Drug factor: Now most people know that tetracycline drugs can lead to the occurrence of yellow teeth, especially in children (before 5 years old) take more influence. 4, hygiene habits: some people do not pay attention to oral hygiene, no morning and evening brushing habits, the surface of the teeth accumulate a layer of food debris, soft tartar, tartar, tobacco stains, tea stains, etc.. These “yellow teeth” is not the teeth themselves yellow, is not pay attention to oral hygiene caused by. Yellow teeth treatment methods are: In addition to pay attention to hygiene habits, correct brushing, to the hospital to do dental bleaching, there are several dental bleaching agent, the effect is not bad, but most of the higher cost; light curing treatment, is covered with a layer of tooth surface and tooth-colored resin, and then a special light, this method is beautiful, convenient, fast, less expensive, can be a little less solid; conditions can Do porcelain teeth, preferably porcelain veneers, can achieve to fake, is the ideal repair method, the disadvantage is to wear out part of the teeth, expensive. If it is caused by poor dental hygiene, you can go to the hospital for cleaning (scaling), which will have a very good effect, but of course it is not a substitute for brushing. At present, the main medical teeth whitening methods are cold light teeth whitening, laser teeth whitening, ultrasonic teeth cleaning, when you smile, reveal a mouthful of white teeth, will undoubtedly make your charm index greatly improved Oh ……