What is the simplest method to treat yellow teeth?

Tooth yellowing is pathological. After tooth incision, there are three layers of tissue in the longitudinal section, and the outermost layer is enamel. It varies from person to person, and it is slightly different because of the degree of calcification of each person's teeth. Some people's teeth are ivory, while others are light yellow, which is healthy. Many rhubarb teeth are pathological. Generally due to: 1, health factors: during the development of teeth, due to malnutrition or illness, it will affect the calcification of teeth, and teeth will become yellow and brittle. 2. Water quality factor: In some areas, especially in some mountainous areas, teeth with excessive fluoride will turn yellow due to the high fluorine content in water, instead of 1-2 teeth, which are full of rhubarb teeth. Fluorine can prevent dental caries, so these people are not prone to dental caries (tooth decay). 3, drug factors: Now most people know that tetracycline drugs can cause yellow teeth, especially children (before 5 years old). 4, hygiene habits: some people do not pay attention to oral hygiene, no brushing habits, a layer of food residue, soft scale, tartar, smoke stains, tea stains, etc. accumulated on the surface of teeth. These "yellow teeth" are not caused by the yellowing of the teeth themselves, but by careless oral hygiene. The treatment of yellow teeth is: besides paying attention to hygiene habits and brushing your teeth correctly, you should also go to the hospital for tooth bleaching. At present, there are several kinds of tooth bleach, and the effect is not bad, but most of them are expensive; Photocuring treatment is to cover the surface of teeth with a layer of resin similar to the color of teeth, and then use special light. This method is beautiful, convenient, fast, low cost and not very firm. If conditions permit, porcelain teeth can be made, preferably porcelain veneer, which is an ideal restoration method. The disadvantage is that the cost of grinding some teeth is high. If the oral hygiene is not good, you can go to the hospital to clean (wash your teeth), which will have a good effect. Of course, it can't replace brushing your teeth. Because there are nerve fibers in the teeth, when the teeth are damaged, the nerve tissue of the teeth is directly or indirectly stimulated and transmitted to the center, and people will feel toothache. The tooth body is the tooth itself, which consists of three calcified hard tissues: enamel, dentin and cementum, and a soft tissue pulp. Dentin constitutes the main body of teeth, enamel covers the crown surface, cementum covers the root surface, and there is a cavity in the center, which contains dental pulp tissue, in which blood vessels and nerves are connected with periodontal tissue through narrow apical foramen. Dentin has obvious response to external mechanical, temperature and chemical stimuli. There are nerve fibers in dentinal tubules. Generally speaking, the sensory transmission of dentin is that external stimuli directly stimulate the nerve endings of dentin and then transmit them to the center, or external stimuli cause the contents of dentin tubules to flow, which indirectly causes the nerve endings at the junction of pulp and dentin to generate impulses (fluid mechanics hypothesis), or odontoblasts are stimulated and then transmitted to the cell body, which causes the changes of surface charges of the cell body and affects the nerve endings in contact with them. There are abundant nerves in the pulp cavity, and the branches from the alveolar nerve with blood vessels enter the pulp from the apical foramen, and then are divided into many thin and thinner branches. Most of the nerves entering the pulp are myelinated nerves, which transmit pain, and a few are unmyelinated nerves, which are sympathetic nerves, which can regulate the contraction and relaxation of blood vessels. Therefore, when tooth trauma hurts dentin and pulp, patients will feel obvious toothache.