Question: Do you know where the hardest part of the human body is?
Some people choose their fists, some choose their mouths, some even light up their brains, and some even touch their friends’ faces…
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Come on, this is not a brain teaser.
The hardest organ in the human body is actually the teeth. Its hardness is close to that of iron.
Tooth, is divided into three parts: crown, neck and root. The part of the tooth we usually see is the crown.
The outermost layer of the tooth crown is enamel, which is the hardest of all tissues in the human body. It is a translucent, milky white calcified tissue mainly composed of calcium-containing It is composed of apatite crystals of phosphorus, etc., and protects the yellowish dentin in the middle layer and the innermost pulp cavity.
A person will have two teeth in his life, the first time is the baby teeth (20) in childhood, until the baby teeth fall out at the age of 6 and are replaced by permanent teeth (32) ), but if a permanent tooth falls out, it will not erupt again.
But As a representation of hardness, teeth are always being damaged.
In addition to the daily chewing function, teeth are also used from time to time to eat melon seeds, tear bags, and even open bottle caps (not recommended to do this). Dangerous movements, teeth are easy to crack), some people will crunch their teeth while sleeping, and some people have not paid attention to cleaning it.
After such a series of operations that do not protect the teeth, the number of bacteria continues to accumulate and multiply, and then attach to the acquired membrane of the teeth (“glycoproteins” in saliva. When in contact with the tooth, it can form a membrane-like substance on the surface of the tooth enamel).
Dental plaque is the main cause of dental caries and periodontal disease. In addition, the formation time of dental plaque generally only takes 12 hours. After a long time, it will calcify to form dental calculus, and then stimulate the gums, resulting in red, swollen and bleeding gums and periodontal disease. Inflammation of tissues (periodontal ligament, alveolar bone, and gums), etc.
Of course, brushing will not remove tartar.
At this point, due to the impact of dental plaque and calculus, the teeth have been reduced from the hardest to fragile molecules, yellowing, blackening, tooth decay, bleeding gums, and drinking. The ice water can make his teeth sour, and he is even ready to move, and then he becomes so young that he “eats soft rice”.
You can wash your face once a day or every two days and your hair every three days, but be sure to brush your teeth twice a day, especially friends who are easy to get stuck in their teeth, be sure to pay attention to cleaning between your teeth, and don’t be lazy. Because brushing your teeth cannot brush between your teeth, food debris and bacteria in the teeth will remain there. Therefore, it is necessary to use dental floss to clean the gap between the teeth.
Also, limit your intake of sweets, desserts, and sugar-sweetened beverages. In addition, you can also do regular oral examinations, as well as cleaning your teeth.
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