Teeth reflect a person's beauty. Some people have whiter and more beautiful teeth, which gives people a better impression. However, some people have darker or yellower teeth, which also leaves a bad impression. Children should be taught to develop the habit of brushing their teeth when they are young. In this way, yellowing of teeth can be avoided. So, what should be done when a child's teeth are yellow? In addition to paying attention to hygiene habits and brushing your teeth correctly and on time, you need to go to the hospital to bleach your teeth. There are several tooth bleaching agents that are quite effective, but most of them require a high fee. A better option is to use the Clean. Teeth. White. Clean. Recipe. Off topic: Why do teeth feel pain? Because nerve fibers are distributed in the teeth, when the teeth are damaged, the nerve tissue of the teeth will be stimulated directly or indirectly and transmitted to the central nervous system of the human body, then people will feel pain in their teeth. The tooth body (that is, the tooth itself) consists of three calcified hard tissues: enamel, dentin, and cementum, and a soft tissue: the pulp. The main body of the tooth is composed of dentin, enamel covers the surface of the crown, cementum covers the surface of the root, and there is a cavity in the center which is the pulp cavity. The pulp tissue is in the pulp cavity, and the narrow apical foramen and periodontal tissue are connected to each other through the blood vessels and nerves inside. Dentin is very sensitive to external mechanical, thermal and chemical stimuli. Because the nerve fibers are in the tubules of the dentin. External stimuli directly stimulate the nerve endings of the dentin, making the dentin sensitive, and then transmit them to the central nervous system. Or the contents of the dentinal tubules are stimulated to flow, indirectly causing the nerve endings at the junction of the pulp and dentin to be stimulated (fluid mechanics hypothesis). Or the processes of odontogenic cells are stimulated and then transmitted to the cell body, causing the surface charge of the cell body to change and affect the nerve endings in contact with it. There are abundant nerves in the pulp cavity. Branches from the alveolar nerve accompanied by blood vessels enter the pulp from the apical foramen and then divide into many thin and even thinner branches. Most of the nerves that transmit pain to the dental pulp are myelinated nerves, while unmyelinated nerves are relatively rare. The sympathetic nerves regulate the contraction and relaxation of blood vessels. Therefore, when tooth damage injures the dentin and pulp, the patient will feel obvious toothache. The above introduction is all about yellow teeth. We must let children develop a good habit of brushing teeth in daily life. Let children brush their teeth in the morning and evening, and also wash their teeth regularly. Tooth washing can wash away stains and some dirt in the teeth, which is also of great benefit to teeth. |
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