350 words in a beautiful forest, such an interesting story happened.
There is a tiger who loves candy. Every day, he asked the small animals to provide several bags of candy. If someone doesn't send them, the tiger will eat them.
A few days later, all the candy the tiger ate stuck to his teeth, and he couldn't get rid of it. He invited his subjects and asked them how to remove candy from his teeth. At this moment, the kind-hearted Mrs. Fox said, "Dear King, you can ask for more candy and stick it on your teeth. In this way, if you tear off the wet candy, don't you tear off the candy in front together? " The tiger ate more candy at once. Unexpectedly, the stuck candy was deeper and there were more cavities.
The tiger rolled on the ground in pain, but the worm in his teeth worked harder. They ate sugar for a while, dug holes for a while, and slept between their teeth for a while, tossing the tiger out of the water. Tears welled up in the tiger's eyes, but the worms were very happy inside.
After a while, the bug seems to be tired of the net and doesn't bother anymore. The tiger quickly got rid of the bugs and went to brush his teeth again.
But if you brush your teeth, you lose a tooth. The tiger thought, "this can't be done!" " "So he ran out of the house to eat small animals.
However, the tiger's mouth stinks, and small animals hide away when they smell the stench.
The tiger starved to death, and there was no food or sugar.
The first filling of teeth in the composition of the third grade of primary school 150 words Zuo's first filling of teeth as the saying goes: "Toothache is not a disease, it hurts like hell."
I really experienced a toothache.
I have a toothache no matter what I eat recently.
My mother said to me, "Phil, my mother will take you to fill your teeth."
"I asked," do you have a toothache? I won't go if it hurts.
"Mom said," there's nothing to be afraid of.
"Listen to my mother say so, I wanted to think, and agreed.
On Sunday, my mother and I came to the hospital. First of all, we registered and went to the stomatology department. There are many people. They look about my age.
There is a little girl in front who is also filling her teeth. She cried badly.
I'm a little scared.
It's my turn The female doctor smiled and told me to open my mouth and said, "Little friend, will you let your aunt check it?" I nodded, not so nervous just now.
After a while, the doctor said, "little friend, your teeth are very bad." Does it hurt on both sides? " It seems that I can't do it without filling my teeth.
Let's fill one today, shall we? "I nodded and almost cried.
The doctor's aunt washed my teeth very carefully first, which really hurt a little.
I washed it repeatedly for a long time.
After washing, the doctor took out a white thing and filled it in the washed teeth.
After a while, the white thing hardened and my teeth stopped hurting.
When leaving the hospital, the doctor's aunt said to me, "Little friend, you should eat less chocolate in the future, brush your teeth in the morning and evening, and rinse your mouth after meals."
In addition, there is still a tooth to be filled. Can you fill it up next time? Does your tooth still hurt? "I said happily," thank you, aunt. I will come again next Sunday.
"I am very happy to go home with my mother.
To write a composition to protect teeth, we must first understand the structure of teeth.
Teeth are the hardest organs in the human body.
It has the functions of biting, tearing, grinding food and assisting pronunciation.
There are two pairs of teeth in a person's life: one pair is deciduous teeth, the upper and lower jaws have 20 teeth, and 10 teeth.
It began to erupt about half a year after birth and came out about two and a half years old. From 7 years old to 12, deciduous teeth fall off one after another. The other pair is permanent teeth, ***32, and the upper and lower jaws are 65,438+06 respectively. The deciduous teeth gradually change from the age of 6, and all the permanent teeth erupt around the age of 12 except the third molar.
The third molar usually erupts after the age of 20, also called wisdom tooth.
Wisdom teeth will never come out, so 28~32 permanent teeth are normal.
Teeth are divided into three parts: crown, neck and root.
The crown is the part we can see, and it is the part where the teeth are exposed outside the gums.
The surface of the crown is covered with a layer of enamel, which is the hardest tissue in the human body, and its hardness is similar to that of the time.
The root is embedded in the alveolar process of the upper and lower jaws.
The root surface is covered with a layer of cementum.
The neck of the tooth is a slightly thinner part between the crown and the root of the tooth, which wraps the gum.
Teeth are mainly composed of dentin, and the internal cavity is called tooth cavity.
The cavity of movable teeth is filled with connective tissue, nerves and blood vessels, which are collectively called dental pulp.
Blood vessels and nerves enter and exit from the apical foramen of teeth.
When suffering from dental caries, bacteria corrode enamel and dentin and enter the pulp cavity, which is unbearable.
(See Figure 37) Students should do the following to protect their teeth: 1. Develop a good habit of brushing your teeth.
Rinse your mouth with warm water after meals and brush your teeth once in the morning and evening.
Don't brush your teeth too often, it will damage your teeth, and don't brush your teeth for too long.
Brush cheese? [ 14]? Returning to Mujiao M: Nuclear Spoon Rebellion Pan Ⅲ? ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ ⑼ 2. Pay attention to oral hygiene and protect your teeth.
Eat less candy at ordinary times.
Especially don't eat sugar before going to bed to prevent dental caries.
In addition, we should pay attention to the usual hygiene habits, do not bite fingers, do not bite pencils and other foreign bodies, and do not lick your teeth with your tongue.
3. If your teeth are sick, you should seek medical advice in time.
If there are cavities, they should be repaired or pulled out.
It is not difficult to achieve the above points, the key is perseverance.
May all students have 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 are some suggestions to help you have a beautiful smile! Your teeth: the main symbol of health and beauty. Teeth enable us to enjoy all kinds of food! Healthy teeth can make us chew hard food, meat, raw food and fruit without scruple ... Good chewing can strengthen the strength of gums and promote saliva secretion. They participate in the digestive process and play a bactericidal role in teeth.
In addition to genetic factors, the color and hardness of our teeth also depend on dental care and eating habits.
Keep your teeth healthy: a balanced diet! A balanced diet and proper dietary distribution throughout the day (in order to avoid snacks, four meals a day: breakfast, lunch, dinner and snacks) are very beneficial to strong teeth.
In fact, it helps our teeth to better resist * * *: enamel erosion, dental caries ... Fresh food, such as carrots, carrots or apples, rubs on the surface of teeth when chewing, which actually plays a role in cleaning teeth.
In addition, lipids, some protein (casein of cheese), minerals (phosphorus, calcium, fluorine ...) and vitamin D have antibacterial effects, which limit the discharge of inorganic salts in enamel.
On the contrary, snacks, especially those "soft" foods, carbohydrate foods (candy or sweet drinks, bread, cakes, etc. ) or acidic foods (soda, fruit, juice) usually increase the risk of dental caries.
Sugar can be converted into acid, which may destroy the enamel on the tooth surface.
If possible, clean your teeth carefully after every meal.
If you don't have the conditions, you can also rinse your mouth seriously or chew a piece of sugar-free gum.
In fact, any increase in saliva flow will reduce the risk of dental caries.
It should be pointed out that excessive drinking of coffee, tea and smoking may make teeth yellow.
Four dairy products make teeth stronger. They are the best sources of calcium and phosphorus we need, and the main minerals of tooth enamel and root supporting bone.
Mineralization of deciduous teeth began in the fourth month of pregnancy, and mineralization of stone teeth began in the first year of birth.
After the teeth are formed, the enamel is renewed and maintained.
We should drink milk, and it is better not to drink sweet drinks.
Dairy products (yogurt, etc. ) Also bring calcium, phosphorus and vitamin D, which will increase the absorption of calcium and phosphorus.
Finally, the main protein casein in milk can limit the excessive discharge of inorganic salts in enamel.
People in the past did a good job: they usually ate cheese after dessert and reduced the acid secreted by carbohydrates with the help of casein and lipids in milk.
Drink more mineral water, which is a natural source of fluorine. Natural mineral water meets the human body's demand for fluorine.
Fluorine can increase the enamel of teeth, strengthen teeth and protect teeth from microbial erosion.
Most mineral water contains 0.3 mg of fluorine per liter, but some are as high as 8 mg per liter.
We can also see fluoride on the dining table.
For pregnant women and children, there are also tablets made of fluorine (0.5 mg to 1 mg according to age).
Tea, sea fish and some vegetables (spinach, carrots, etc.) also contain fluorine. ).
However, excessive intake of fluoride (more than 2 mg per day) may make teeth black.
Take advantage of chocolate and sugar-free chewing gum. In fact, cocoa contains tannic acid, fluorine and calcium phosphate.
All three substances are involved in protecting teeth.
In "sugar-free" chewing gum, sucrose is replaced by sweet polyol, but it will not cause dental caries: xylitol plays a bactericidal role, which is beneficial to reducing dental plaque, and sorbitol (sugar synthesized from glucose or fructose, used as artificial sweet flavoring agent).
So a 2.2g sugar-coated chewing gum has only 3.8 calories.
The 600-word narrative of the composition "Supplement" repairs people's hearts, just like a garden, it also needs fertilization, watering and restoration.
He, an ordinary shoemaker.
In others' eyes, he is just a humble, dirty and poor shoemaker, but in my opinion, he can not only repair shoes.
Early in the morning, he and his wife sat on the street and started a new day's work.
He is doing business with his first client today. As a rule, he only charges others half price for his first business every day.
He looks as if this business is not easy to do.
He picked up the scissors for a long time and then put them down, picked up the mending knife, repaired them for a while and then put them down, then picked up a small nail and hammer to nail the shoes for more than ten minutes and then put them down ... This seems to be completely different from his usual skillful movements.
What's going on here? Oh! It turns out that this pair of shoes needs to nail a cushion on the heel, but because the heel is too thin, it is not easy to nail it.
So his wife said to him, "It's really a dead brain. All you have to do is stick the cushion on the heel with' all-purpose glue'. Nobody else knows anyway.
"He glanced at his wife, and she stopped talking.
After about half an hour, he still reluctantly glued the insole with "all-purpose glue", which looked unnatural.
The woman with the shoes came up and asked, "How much is it?" The shoemaker glanced away, thought for a moment, and hesitantly replied, "No ... No ... no need to pay.
"His voice was so small that he couldn't hear himself.
The woman asked again, "Well, how much is it?" "Don't have to pay.
"Oh, my God! He finally said it fluently.
The woman felt a little puzzled, so he told her the whole story, and the woman finally understood the reason why the shoemaker didn't charge money.
So she said to the shoemaker, "Thank you, it has been mended."
"Before the shoemaker came to her senses, she disappeared into the flowing crowd.
Indeed, the shoemaker not only mended women's shoes, but also mended his own soul, making it more pure, beautiful and dazzling.
Maintain oral hygiene! Composition, 200 words. Protect your teeth. Start with everyone! Toothache is not a disease, it hurts like hell. I have a deep understanding of this sentence, because I have had several dental caries before, and I can't eat any food every time. When I brush my teeth, I bleed and the pain is unbearable. I have to go to the hospital to prescribe medicine, rinse my mouth and fill my teeth, otherwise it will rot the roots and affect my health.
Therefore, I understand the importance of protecting oral hygiene.
Now, I brush my teeth very carefully every time, and I haven't had dental caries for a long time for no less than three minutes.
A clean mouth is the foundation of health.
We must keep our mouth clean every day and try to reduce harmful bacteria in our mouth, because most bacteria in our mouth are harmful to our teeth and health.
At the same time, clean oral cavity also reflects the civilized quality and quality of life of a person, a family and a nation.
Communicating with people, white teeth, confident smile and fresh breath, oral cleaning is far more important than wearing brand-name clothes.
Therefore, we should develop good oral hygiene habits from childhood and establish a civilized and healthy image of China people with our white teeth.
What are the materials for filling teeth? Mercury is mainly composed of silver, tin, copper and mercury.
Amalgam is the most commonly used filling material, because it is durable and has been widely used for more than a century, and the effect is very satisfactory.
Resin material The color of resin material is close to the primary color of teeth, and the effect is very beautiful, so it is mostly used on front teeth.
Under appropriate circumstances, resin materials can be used to improve the color, shape and size of teeth and beautify smiles.
Glass ionomer resin glass ionomer resin is another tooth color filling material.
Usually used near deciduous teeth, gums and teeth neck.
It can be attached to teeth, and the fluoride it releases helps to strengthen teeth and prevent tooth decay.
Nano and diamond resin materials are the most advanced high-tech filling materials, which have the advantages of higher strength and more realistic color.
Clove oil zinc oxide cement powder is also called temporary cement powder and butoxide paste.
Used as bottom non-load-bearing material of deep hole double bottom, or non-load-bearing single bottom material, as temporary hole sealing material for 1~2 weeks, as root canal filling material, with excipient as periodontal plugging agent.
Calcium hydroxide cement powder is a new type of pulp-protecting substrate.
It is used as padding for class III and V cavities, as pulp-protecting backing material of composite resin for sealing pulp, and as direct and indirect pulp capping agent.
Gutta percha becomes soft and plastic when heated at 40℃ and hardens after cooling.
The auxiliary material use for root canal filling can temporarily seal that cavity, or the temperature of the teeth can be teste after heating.
Write a 400-word composition with my mother taking me to the dentist as the theme. Personal suggestion: solve your own problems, but it can provide you with a composition idea, and many articles can also be applied.
Paragraph 1: Why do you go to the dentist? Background of seeing a dentist: I ate too much sugar, or it was time to change my teeth, or I fell down myself.
Then they ask for a dentist themselves, or their parents force them to go. What's their attitude and mood?
The second paragraph: how to see the teeth? How about the dental clinic? Describe the doctor's impression of you, explain your psychological activities, and then talk about the whole process of doctor's dental care in detail, such as what to do first, then what to do, and finally what to do. What do you feel in these processes, fear, excitement, timidity and nervousness? The third paragraph: personal feelings.
Just talk about your feelings about dental care, promise to cherish your teeth in the future, and do what the doctor says without eating sugar? Love hygiene? Be careful not to look around when you walk.
All in all, it was an unforgettable experience.
Above.
Anyway, you can write about 600 words.
Compositions concerning oral hygiene and health protect teeth. Start with everyone! Toothache is not a disease, it hurts like hell. I have a deep understanding of this sentence, because I have had several dental caries before, and I can't eat any food every time. When I brush my teeth, I bleed and the pain is unbearable. I have to go to the hospital to prescribe medicine, rinse my mouth and fill my teeth, otherwise it will rot the roots and affect my health.
Therefore, I understand the importance of protecting oral hygiene.
Now, I brush my teeth very carefully every time, and I haven't had dental caries for a long time for no less than three minutes.
A clean mouth is the foundation of health.
We must keep our mouth clean every day and try to reduce harmful bacteria in our mouth, because most bacteria in our mouth are harmful to our teeth and health.
At the same time, clean oral cavity also reflects the civilized quality and quality of life of a person, a family and a nation.
Communicating with people, white teeth, confident smile and fresh breath, oral cleaning is far more important than wearing brand-name clothes.
Therefore, we should develop good oral hygiene habits from childhood and establish a civilized and healthy image of China people with our white teeth.
...
I wrote the 600-word composition after the exam. You can read it. This is my first time to send it.
The Chinese exam after every exam makes us nervous, and this exam is no exception.
When the teacher handed out the test paper, we began to write hard one by one, and everyone had the same idea-to get a good grade in the exam.
We all sighed when the teacher put away the test paper. Someone said, "It seems that we are going to fail the exam again.
"Some people said," a lot of them won't.
"Others said," I hope not to send it today.
"Some people even said," you may not see me tomorrow.
"I prayed silently.
Good news: the test paper has not been approved yet! But the big stone in our hearts has not fallen.
When I get home, I speak very carefully. I didn't mention anything about the exam. My mother told me to go right, so I went right. Mom told me to go left, so I didn't go right.
Fortunately, my mother has long forgotten about the exam.
The next day, it was time to hand out the test paper. I suddenly trembled with nervousness and my teeth began to fight. I clenched my fist tightly and my hands were full of sweat.
What about the people next to you? Some are like ants on hot bricks, anxious and at a loss, while others are heartbroken.
When I got the test paper, I didn't open it with a brush, but glanced at the single digits-3, and a lot of results popped up in my mind: 93? No
83? That will be a dead man.
73? Oh, my God! Oh, my God, help me! 83, 83 is ok ~ my mood can't be described. I quickly opened the test paper and a big 83 appeared in front of me. Although I thanked him with a smile, I was still worried about whether to stage a family table tennis match, men's singles, women's doubles or mixed doubles.
When I got home, I was inevitably questioned by my mother, but the table tennis competition didn't start, and I just started the analysis and guidance class.
This exam really scared the daylights out of me. Carelessness caused many mistakes. Keep trying next time.
Only 600.
Adopt me, O(∩_∩)O Thank you.
A picky animal rabbit lives in such a family, with a chubby mother rabbit, a fast-paced father rabbit and a picky rabbit son.
Mother rabbit is hardworking and capable, father rabbit is smart and brave, and little rabbit is lively and lovely.
Mother rabbit and father rabbit are not afraid of wolves, but they are afraid that little rabbits will be picky about food.
This day is the rabbit's three-month birthday. Rabbit is very happy, because he will receive many gifts and can invite his friends to play at home.
The rabbit jumped up in the morning and went to the kitchen to let his mother cook all his favorite dishes.
Father Rabbit, who was reading a book, suddenly had an idea: Today, I will take this opportunity to let the rabbit get rid of the habit of picky eaters! He smiled as if he had a plan.
After a while, the little goat, calf and pony came and the table was surrounded. Everyone not only brought gifts but also the most sincere wishes, and the little rabbit was moved to tears.
Mother rabbit and father rabbit are very happy to see their children have so many good friends.
Let's talk while eating. After a while, Father Rabbit suddenly interrupted everyone's conversation. "I ask each of you a question, and you all have to answer honestly!" "Everyone agreed.
"Little goat, why do you climb the mountain flat like shoes?" "Because I eat a lot, I eat all kinds of grass, big and small, yellow and green. Mom and dad told me that only when I am full can I climb higher and eat more delicious grass! " "calf, why are you so strong?" "Like the little goat, I am never picky about food, and I am full at every meal!" "The pony and you? Why do you have such a big camel thing? " "Ha ha, I'm just like them!" The little rabbit sitting on the side bowed his head in shame. "Dad, I won't be picky about food in the future. I want to climb the mountain like a child, as strong as a calf and as energetic as a pony! " Mother rabbit clapped her hands and applauded: "this is your birthday wish, son!" " "Everyone laughed after listening to it.
Please indicate the source for reprinting. How about filling a tooth?