Yellowish and milky teeth are normal tooth color and are healthy. However, increased yellow color with other symptoms is pathological. The most common is health factors: in the development of growth due to poor nutrition or had a disease, will make the teeth calcification affected, teeth will be yellow and brittle, the surface of the pit; In addition, the water quality, especially some mountainous areas will also affect the color of teeth, which is excessive drinking fluoride, often full of big yellow teeth; tetracycline drugs can lead to the occurrence of yellow teeth, especially in childhood to take more impact. Do not pay attention to oral hygiene, no brushing habits, or addicted to tobacco and alcohol will also cause yellow teeth, but these “yellow teeth” is not the teeth themselves yellow, but pigmentation caused. The treatment of “yellow teeth” should be considered according to different degrees, different ages, different economic conditions and different methods, such as tooth bleaching, light-curing treatment, porcelain teeth; “yellow teeth” caused by pigmentation can go to the hospital for cleaning, but should quit But you should quit smoking and drinking, otherwise your teeth will become yellow again soon.