If you want to protect your teeth, you must first understand the structure of teeth.
The tooth is the hardest organ in the human body. There are functions such as biting, tearing, grinding food and assisting in pronunciation.
There are two sets of teeth in a person's life: a set of milk teeth, **** 20, 10 each in the upper and lower jaw. About half a year after birth began to erupt, about two and a half years old, from 7 to 12 years of age, the milk teeth have fallen off; another pair of permanent teeth, ***32, upper and lower jaw each 16, since the age of 6, gradually for the replacement of milk teeth, to 12 years old around the 3rd molar in addition to all permanent teeth eruption.
The third molar is usually erupted after the age of 20, also known as wisdom teeth. Wisdom teeth may not erupt for life, so 28 to 32 permanent teeth are normal.
The tooth is divided into three parts: the crown, the neck and the root. The crown, which is the part we can see, is the part of the tooth that is exposed beyond the gums.
The surface of the crown is covered with a layer of enamel, which is the hardest tissue in the body, with a hardness similar to that of quartz. The root is the part of the tooth that is embedded in the alveolar process of the upper and lower jaws.
The surface of the root is covered with a layer of cementum. The neck of the tooth is the slightly thinner part between the crown and the root, and is surrounded by the gingiva.
The tooth consists mainly of dentin, with an internal cavity called the dental cavity. The living tooth cavity is filled with connective tissue, nerves and blood vessels, collectively known as the pulp.
Blood vessels and nerves enter and exit the tooth through the apical foramen. In caries, when bacteria erode the enamel and dentin to enter the pulp cavity, *** the nerves, and the pain is excruciating.
(see Figure 37) students to protect their teeth, to do the following: 1. To develop good brushing habits. Rinse your mouth with warm water after meals, and brush your teeth once in the morning and once in the evening.
The number of times you brush your teeth should not be too many, more will damage your teeth instead, and the time you brush your teeth should not be too long. The brush cheese? (14) Tou? The first thing you need to do is to make sure that you have a good understanding of what you are doing and what you are doing. The following are some of the most common ways to brush your teeth. (9) Faulty issues: The actual facts are that the arkshells are not suitable for the teeth, and that the teeth are not suitable for the teeth. Do you have to pay attention to dental hygiene in general? 2. Pay attention to dental hygiene and protect your teeth.
Usually, you should eat less candy. Especially do not eat candy before going to bed to prevent tooth decay.
In addition, pay attention to the usual hygiene habits, do not bite the fingertips, do not bite the pencil head and other foreign objects, do not use the tongue to lick the teeth. 3. If your teeth are sick, you should consult a doctor.
In the case of bad tooth decay, it should be repaired or extracted. It is not difficult to do the above points, the key is to be persistent.
May all students have a set of healthy and beautiful teeth. Good oral health care is not the only way to have healthy and beautiful teeth.
Eating habits also play an important role. Here is a little advice that can help you have a beautiful smile! Your teeth: the main sign of health and beauty Teeth allow us to enjoy a wide variety of foods! Healthy teeth allow us to chew harder foods, meats, raw foods, fruits without fear ...... Good chewing strengthens the gums and promotes the secretion of saliva, which participates in the digestive process and acts as an antiseptic for the teeth.
In addition to genetic factors, the color and hardness of our teeth depends on dental care and eating habits. To keep your teeth healthy: eat a balanced diet! A well-balanced diet, with a moderate distribution of meals throughout the day (in order to avoid snacking, four meals should be scheduled throughout the day: breakfast, lunch, dinner and snack time) is very beneficial for strong teeth.
In fact, it is beneficial for our teeth to better resist ***: enamel erosion, caries ...... Raw foods such as carrots, red-skinned white radishes or apples actually serve to clean the teeth by rubbing them on the surface when they are chewed. In addition, lipids, certain proteins (casein in cheese), minerals (phosphorus, calcium, fluoride ......) and vitamin D have an antibacterial effect, limiting the expulsion of inorganic salts from the enamel.
On the contrary, snacks, especially those "soft" foods, carbohydrates (candies or sweetened beverages, breads, pastries ......) or acidic foods (soda, fruits, fruit juices), usually increase the risk of dental caries. Sugar can be converted to acid, which may damage the enamel on the surface of the teeth.
If possible, clean your teeth carefully after each food. If you don't have the means, you can also rinse your mouth carefully or chew a piece of sugar-free gum.
In fact, any increase in salivary flow reduces the risk of dental caries. It is important to point out that excessive coffee and tea consumption and excessive smoking may yellow the teeth.
Four dairy products for stronger teeth They are the best source of calcium and phosphorus that we need, the main mineral material for tooth enamel and root support bone. Mineralization begins in the fourth month of pregnancy for milk teeth and in the first year of life for stone teeth.
After the teeth are created, the enamel renews and remains. We should drink milk, preferably without sweet drinks.
Dairy products (yogurt, etc.) also bring calcium, phosphorus and vitamin D, the latter will increase the absorption of calcium and phosphorus. Finally, casein, the main protein in milk, limits the excessive excretion of inorganic salts from tooth enamel.
In the past, people did it well: they usually ate cheese after dessert, with the help of the limiting effect of casein and the lipids in the milk, which reduces the acid secreted from carbohydrates. Drink more mineral water, it is a natural source of fluoride Natural mineral water meets the body's needs for fluoride.
Fluorine increases the enamel of the teeth, strengthens them and protects them from microbes. Most mineral waters contain 0.3 milligrams of fluoride per liter, but some contain as much as 8 milligrams per liter.
We also see fluoridated salts at the table. For pregnant women and children, there are also tablets made with fluorine (0.5 mg to 1 mg, depending on age).
Fluorine is also found in tea, sea fish and certain vegetables (spinach, red-skinned white radish ......). However, excessive intake of fluoride (more than 2 milligrams per day) may darken the teeth.
Benefits of using chocolate and sugar-free gum The fact is that cocoa contains tannins, fluoride and calcium phosphate. All three of these substances are involved in the protection of teeth.
In "sugar-free" chewing gum, sucrose is replaced by sweetening polyols that do not cause caries: xylitol, which acts as an antiseptic and contributes to the reduction of plaque, and sorbitol, a sugar synthesized from glucose or fructose and used as an artificially sweetened flavoring agent. Thus a 2.2 gram sugar-coated gum contains only 3.8 calories.
2. This is the best I can do about 600 wordsThis is the best I can do
Short hair, round head embedded in a pair of big eyes that can talk, high nose bridge. When he smiles, he reveals two rows of neat and snow-white teeth. This constitutes a cheerful, lively and smiling me - Xu Xiaoxin.
When it comes to this name, there is also some origin! When I was born, my mom found a blind man to tell my fortune. The blind man said I lacked "gold", so mom simply gave me three "gold". It's a pain in the ass to write, but I'll take my chances.
I have a wide range of hobbies, dancing, playing the harmonica, singing, writing, I like all. The most favorite is to read books. I often use after-school time to read books, a look is half an hour! Tell you, reading books can not only increase our knowledge, but also improve our intelligence, so that we open our eyes.
I love to make friends and help others. Unfortunately, I was born timid as a mouse, really should be the "mouse" phase. I remember an autumn night, I went out to the toilet alone, outside the hand can not see five fingers, the wind "whistling" blowing, blowing me straight shivering. I wrapped my clothes tightly and continued to walk in the dark. Suddenly, I heard "rustling" sound, I immediately think of the myth of the devil, then stammered: "The devil ...... big ...... king, you! Spare ...... me ...... it!" "Hey, Xiao Xin, what are you doing here?" I turned around and looked, alas, it turned out to be Dad. I cried and said, "Dad, why didn't you come earlier? If you had come one step later, it would have been a disaster!" Dad laughed and said, "What a coward!" I heard this and said angrily, "Who asked me to be a rat?" However, I decided to challenge this "rat"!
Students, now you should know me!
Now you know what I'm all about.
Standing by the river, I smelled the odor, saw the struggle, and heard the ***.
Although the sun has risen and brought light to the earth, the lights beside me are still on. This happens around all sorts of things reflecting the people do not pay attention to saving the environment, so that the environment around the deterioration of the loss of the beauty of the past.
Being people realize this, began to save resources, some other people are still in the waste, still use disposable chopsticks, wash their hands after not turning off the faucet, indiscriminate felling of trees ...... How can we live on earth, how can we not live without things like water, fire, trees, soil and so on. So, we have to cherish the bits and pieces around us and maintain our home.
Water, the source of life, is one of the indispensable things for human beings. I believe that we have all heard the saying that if human beings do not cherish water, then the last drop of water on earth will be human tears.
Yes, it is true that we should cherish the water, our country has more than 6,000 cities are short of water, where it is very difficult to find a drop of water, in our daily life, we also need to cherish the water, for example: washing rice water, cooking water to wash dishes and chopsticks, you can save water and reduce the pollution of detergents; bathing to change the basin bath for the shower, and the use of low-flow shower head, to avoid a long time to flush. If everyone is so save water, a month on **** save 6 billion cubic meters of water, 6 billion cubic meters of water is almost equal to a medium-sized city's water consumption in a year.
In addition, we are in the school, public **** toilet to see the faucet in the drip, it must go to the faucet to tighten; in the playground, when you see children playing with water, it must go to stop them. March 22 is the World Water Day, every year on this day the world will publicize: we have to cherish the water resources, to protect the water of life.
In fact, not only in this day, in our life every day, we should cherish every drop of water, with practical action to cherish the water of life. Trees, which can give us fresh air, maintain soil and water, and prevent floods and dust storms.
It also gives us a green umbrella to block the hot sun. However, over the past few years, there have been fewer and fewer trees and more and more floods.
What is the reason for this? It turns out that some people are greedy for money, will be a large number of trees cut down, made into furniture, white paper, disposable chopsticks to make money. However, people buy the paper not only do not cherish, but also randomly thrown to the ground, in their minds, it is just an insignificant little piece of paper.
But they have not thought of white paper is trees, throw away the white paper is the same as cutting down trees ah! We do not think that a pair of disposable chopsticks, a piece of paper thrown away does not matter, China has a population of more than 1.3 billion people, if each of them so want to do so, then the world will become what? No one dares to imagine. Students, we should refuse to use disposable chopsticks, save paper, and don't cut down trees indiscriminately is our best choice! Next, let's talk about saving electricity.
Electricity, like water, is an indispensable part of human life. At home, there are many things related to electricity, such as: air conditioners, computers, washing machines, refrigerators ...... As long as we save these things related to electricity, we can also save a lot.
Here I will tell you some tips to save electricity. Will not be poured into the microwave oven special glass cooking pot, pour the right amount of water, cover the lid, put the rice and water in the glass cooking pot into the microwave oven, medium-high heat, set 7 minutes can be.
Why is it so simple? Because the general power of the rice cooker is 900 watts, time 20 minutes, power consumption 0.3 degrees; and microwave power is 700 watts, time 7 minutes, power consumption less than 0.1 degrees. And the microwave oven to do the rice particles complete, the overall soft and hard moderate, while the rice cooker to do the rice in some places soft, some places hard, and often have the phenomenon of paste pot.
Microwave cooking is both energy efficient and delicious, the best of both worlds. There is also a way to save electricity: steam things, steamer water do not put too much, generally to cook well after the pot left half a bowl of water is appropriate to do so, both water and maximize the savings of gas, why not do it? Students, get moving, develop good habits of energy saving, to the people around you to do a good example! Encourage more people to join the energy-saving team.
Let the aging earth rejuvenate its luster.
4. Composition Environmental protection I am the best By writing a thing other people praise me, say environmental protection I am the best to write to 400 wordsFavorite sunset that dash of green
Sunset, leisurely I jumped in the forest path, looking at the lake reflected the remnants of the sun, the heart of the heart is incredibly comfortable, a few cute little dog in the weeds side of the scattering of joy, and from time to time, also barked a few times. I hummed a little song and walked slowly, with happiness written all over my face.
I anxiously walked a few steps, but the scene in front of my eyes but make me dumbfounded ---- crane rumbling slowly rise, digging machine left shovel, right shovel, in a flash, the ground dust flying sky, I will rush to cover my nose. Suddenly, the dead branches of the tree fell at my feet, so that I instantly awake, I looked up, the tree by the creek, is not there; the nest in the tree, is not there; the nest of the happy family of birds, is also not there. I looked at the creek, the bird family happy chat surfaced in my mind, "hu" a wind sand blew into my eyes, I rubbed my eyes, look at everything in front of me, mixed with sand and gravel dirt floating around, the workers are still busy, and sometimes also cover their noses, talking loudly.
I remember that it was three or four years ago in the fall, it was a harvest season, the smell of wheat mixed in the dust and fog, spread over the fields. The sun has been in the west, after harvesting the land has long been piled up several piles of golden yellow stacks of wheat, everyone is busy, yellow cows eating grass in the meadow, recalling the infinite fun of the countryside, I leaned in front of the window, while listening to the moving song of the birds, while smelling the smell of rice. .
"But these, are they still there?" I stood by the construction site for a long time, deep in thought.
5. Essay on Protecting TeethProtect your teeth. Start from everyone!
Xiaohuo Essay Network
"Toothache is not a disease, the pain really kills". I have had a deep experience of this sentence, because I used to caries a few times, each time it hurts too much to eat, a brush bleeding, pain unbearable unbearable, had to go to the hospital to prescribe medicine, rinse, repair teeth, otherwise, it will rot to the root of the tooth, affecting health. Therefore, I know the importance of protecting oral hygiene. Now, I brush my teeth every time very seriously, and no less than three minutes, for a long time no more caries. Small 荷 作文网
A clean mouth is the foundation of a healthy life. We must keep our mouth clean every day to minimize the harmful bacteria in the mouth, because most of the bacteria in the mouth are harmful to the teeth and the health of the body. At the same time, a clean mouth also reflects the civilized quality and quality of life of a person, a family and a nation. Communicating with others, having white teeth, showing a confident smile, breathing fresh breath, clean mouth is far more important than wearing brand-name clothes. Therefore, we should develop good oral hygiene habits from childhood, with our white teeth to establish a civilized and healthy image of Chinese people.
6. Protect teeth essay, 500 words, not the fastest, as long as the bestThe mouth is an important organ of the body, the teeth also affect the aesthetic, and about 85% to 90% of the world's population suffers from dental disease, so the protection of the teeth, from me to start.
However, how to protect the teeth has become a major problem for people, if the method is not appropriate, but also cause serious consequences! Below, I will introduce you to several ways to protect your teeth.
1. A balanced diet, with the right amount of meals distributed throughout the day (to avoid snacking, four meals should be scheduled in a day: breakfast, lunch, dinner and snack time) is very good for strong teeth.
2. Glaze erosion, caries ...... Raw foods such as carrots, red-skinned white radishes, or apples actually serve to clean the teeth by rubbing against the surface of the teeth as they are chewed.
3. Lipids, certain proteins (casein in cheese), minerals (phosphorus, calcium, fluoride ......), and vitamin D have an antimicrobial effect, limiting the discharge of inorganic salts from the enamel.
4. Four dairy products for stronger teeth: we should drink milk, preferably without sweet drinks. Dairy products (yogurt, etc.) also bring calcium, phosphorus and vitamin D, the latter will increase the absorption of calcium and phosphorus. Finally, casein, the main protein in milk, limits the excessive excretion of inorganic salts from tooth enamel. This is what people used to do: they usually ate cheese after dessert, with the help of the limiting effect of casein and the lipids in the milk, which reduces the acid secreted from carbohydrates.
Of course, it is also important to use the right dental tools. For example, our most commonly used toothpicks, if not used properly, stabbing the gums, can cause gum swelling and pain, so it is advisable to use dental floss to solve the problem.
Listen to my introduction, do you know the importance of dental care? Well, protect your teeth, start from me!
7. A few words popping up to protect teethAs the saying goes, "Toothache is not a disease, it hurts to kill." "Ouch, ouch, it hurts!" It turned out to be a black hole in my grinding teeth, I lay in bed and turned over and over, hey, what should I do?
Mom looked in the eyes, but pain in the heart, they took me to the dentist. Let me lie in a large recliner, there is a shadowless lamp overhead, next to a tray with a set of medical equipment, these things seem to be like a monster with teeth and claws, smiling at me unkindly, see these, my heart and nervous and scared, legs can not help but tremble. The doctor came over and said to me gently, "Little friend, don't be afraid, it doesn't hurt at all, open your mouth wide, I'll give you a check." As the recliner gradually rose, my heart was in my throat. The doctor hooked a black tooth with a probe. Ah, it hurt! I screamed out. The doctor looked again with a small mirror the size of a button and said, "Well, it's an inflamed pulp." I saw the doctor drilling my tooth with a small electric drill, and I felt very nervous, thinking: I must open my mouth wide, but don't drill my tongue! As the drill vibrated, my head buzzed. Ahh! What a pain in the ass. The doctor then cleaned me up and filled the little black hole with some white stuff. I looked in the mirror and eek! The black hole was gone, leaving only a patch the size of a soybean grain, and my tooth hurt less.
Through this filling, I finally understand that my mom let me insist on brushing my teeth every morning and evening. As the saying goes, "People eat for days, food for teeth first." Children and teenagers are in the critical period of growth and development, the good or bad of the teeth is directly related to our physical and mental health. Therefore, we should try to protect our teeth from bacteria.
How should we protect our teeth? Protecting your teeth should start at a young age. Here are 5 good habits to protect your teeth:
1, morning and evening brushing, it is best to use a health care toothbrush and fluoride toothpaste, replace the toothbrush every 3 months, brushing time of 5 minutes, the upper teeth downward brush, the lower teeth upward brush, the jaws flat with the brush, at least 8-15 times.
2, regular oral examination.
3, eat less sweets, sugary drinks, spicy *** sexual food, etc..
4. After eating or snacking, rinse your mouth with warm water or chew sugar-free gum.
5, drink more tea to prevent tooth contraction, do not eat too hard food to prevent tooth injury, and remember to favoritism for dental health.
We should develop good oral hygiene habits from childhood, with our white teeth to establish a civilized and healthy image of Chinese people.
8. I'm the best essayI'm the best, that time and time again, the group photo witnessed me in the dance competition in the moment of glory, how I want to be there again ah! But the fact tells me that time and time again, that is only a moment of glory, only on behalf of my previous, can not use it to weigh the present and the future, and even more can not use it to measure the meaning and value of my life. The book after book of certificates, a piece of medal hanging in my chest, holding in my hands. At that moment, how glorious I was! But now the certificates and medals have been blocked in my cabinet, doing a long and boundless dream, according to this view, there can be who will be more brilliant than me?
Perhaps you think I am proud, complacent, back to the bitter, endless talk to me your long speech. But have you ever thought that this is just a kind of comfort for life, and no big deal. It's a psychological comfort that all people have. It's a common thing. It's also a way to feel confident. Moreover, the proper encouragement will also be transformed into motivation, so that you can study \ work and other aspects of the higher level.
I am the best! It is a simple sentence, but it can summarize all my heart at this moment.
9. write love teeth 4th grade weekly 350 wordsA beautiful smile reveals a mouthful of neat, white teeth, which is a sign of good health. Many people want their teeth to be white as jade. Well, to make your teeth healthy, you need to know about teeth and take care of our teeth. Teeth are the hardest organs in the human body. There are chewing, help pronunciation and maintain the function of facial appearance. Human life has grown two teeth, the first growth of the so-called "milk teeth", to the age of two or so out, **** twenty. Around the age of six, milk teeth gradually fall out, growing "permanent teeth", *** thirty-two. To have a set of healthy teeth, we must pay attention to dental health, care for our teeth. How to protect the teeth? I'll introduce you to a few ways to protect your teeth. 1. To develop good brushing habits. Rinse your mouth with warm water after meals, and brush your teeth once in the morning and evening. Brushing should pay attention to the correct method: along the teeth, vertical brush, brush the inside and then brush the outside. You can't brush back and forth horizontally, or you'll damage your gums.
2. Pay attention to dental hygiene and eat less candy. Especially do not eat candy before going to bed to prevent dental caries. In addition, pay attention to the usual hygiene habits, do not bite the fingertips, do not bite the pencil head and other foreign objects, do not use the tongue to lick the teeth.3. Do not picky about what to eat, eat more to promote chewing vegetables, such as celery, cabbage, spinach, kelp, etc., is conducive to promoting the development of the lower jaw and the teeth of the whole. Eating vegetables can also increase the content of molybdenum in the teeth and enhance the hardness and sturdiness of the teeth. Eating vegetables often can also prevent dental caries, because vegetables contain 90% of water and some fiber substances. When chewing vegetables, the water in the vegetables can dilute the sugar in the mouth, so that bacteria are not easy to grow; fiber can play a sweeping and cleaning effect on the teeth. It is important to take care of your teeth. I hope we all love our teeth and show a charming smile!
10. I'm the best essay 600 wordsI'm the best
I remember the first time I went to the Children's Palace to learn martial arts, only on the kindergarten class, when I first walked into the door of the martial arts class, I saw a lot of unfamiliar children in front of me, the heart of the unspeakable fear, and tightly pulling the hand of his mother not to let go. At that moment, Mr. Dong came over and said, "Xiaoyi is the best!" After hearing these words, I really wasn't afraid, and followed the teacher into the practice hall.
From then on, no matter what the weather was like, I kept practicing. Whenever I encountered difficulties and didn't want to practice, "Xiaoyi is the best!" These words rang in my ears, so I gritted my teeth and kept on practicing.
I am now a second-grade student, and have been practicing martial arts for three years. During these three years, I have gained a lot of achievements in martial arts, which are inseparable from my own efforts and the help of my father and mother, but the most important thing is that Mr. Dong's words, "Xiaoyi is the best! These words always encourage me and motivate me to move forward. At the age of six, I performed Chinese martial arts for the first time at the International Hotel for my Japanese friends and surprised them. Then I performed again and again, and I am most proud of the fact that this year I won all three first places in the Shaoxing City Wushu Competition D Group. The latest news is that I won a gold medal at the Hangzhou West Lake Expo Chinese Wushu International Exchange Competition! I'm not sure if I'm the right person for the job, but I'm sure I'm the right person for the job!
Yes, I am the best, now and in the future!