If you want to protect your teeth, you must first understand the structure of your 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 take the following measures to protect their teeth:
1. Develop good brushing habits. 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
2. Tips for protecting teeth
Dental care. This is a very important part of beauty. Know your teeth.
Why yellowing or blackening is necessary to protect teeth.
When the teeth turn yellow, brown or black, we must first make clear the reason for tooth discoloration. Tooth discoloration can be divided into internal coloring and external coloring.
Two kinds.
Tooth internal coloring is tooth discoloration caused by the change of tooth tissue structure or nutrition. The common diseases are pulp necrosis, mottled enamel teeth and drugs.
Tooth discoloration caused by deposition, etc. Normal teeth are covered with a milky white, translucent and shiny substance when viewed from the longitudinal section.
Ze and particularly hard structural covering, it has the function of protecting teeth, because it looks like magnetic glaze, so it is called enamel. tooth
There is a yellowish thick dentin structure in enamel, which forms the main body of teeth. There is pulp in the center of the tooth, including blood vessels.
Nerves provide nutrition and metabolism for teeth. If the nutrition of the teeth changes or is cut off, the teeth will change color.
1. Tooth discoloration caused by pulp necrosis, such as pulp bleeding and necrosis caused by tooth trauma, teeth will turn dark red.
Brown or blue gray.
2. Mottled enamel teeth are commonly known as macular teeth. Before the age of 5, drinking water with fluorine content exceeding 65,438+0/65,438+0 million per 65,438+0 liter of water will make teeth.
The structure of enamel is poorly calcified and discolored. Light mottled enamel teeth with chalky or yellowish brown patches on the enamel surface; strict
The surface of heavy teeth is rough, uneven and yellowish brown, even black, and the teeth are fragile, so the treatment is more complicated. light-spot
Glazed dentists use dilute hydrochloric acid to smear macula to change color, which can make macula shallower, but attention should be paid to protecting gums and preventing decay when applying medicine.
Erosion and burns. Severe mottled enamel teeth can be repaired with "plastic tooth veneer" or "light-cured composite resin"
3. Drugs cause tooth discoloration. Mothers in the third trimester or children under 5 years old take tetracycline and oxytetracycline more.
Antibiotics combine with calcium to form yellow or gray tetracycline, and oxytetracycline antibiotics combine with calcium to form yellow or gray.
Colored tetracycline calcium complex is deposited in the structure of enamel and dentin through dental pulp, which makes the erupted teeth yellow.
Dark gray or dark brown. The preventive measure is to take tetracycline drugs as little as possible. At present, tetracycline drugs for children have been eliminated.
Medicine.
External coloring of teeth refers to pigmentation on the surface of teeth. For example, smoking, drinking, drinking tea, and pigments in the diet mixed with saliva.
After adhering to the surface of teeth, especially the occlusal surface of teeth, pigmentation is more likely to appear in the grooves and pits of lips and tongue.
At this point, the tooth surface turns brown, yellow, gray or blue-green. The tooth surface of people who have been exposed to iron and sulfur for a long time due to professional relations can be
Calm with brown elements. There may be melanin deposition on the surface of teeth exposed to mercury for a long time. Tooth surfaces exposed to copper, nickel and chromium for a long time will
There are green * * * elements.
Brushing your teeth in the morning and evening and gargling after meals can prevent the external coloring of your teeth. Dyed teeth can be wiped with a towel or cotton swab.
Wipe the tooth surface with 3% hydrogen peroxide. Seriously, use a doctor's rubber wheel to polish and remove the coloring.
3. Take care of your teeth and protect them
Alcohol is the enemy of fresh breath, so try to avoid drinking alcohol or using alcoholic mouthwash. Clean your teeth regularly:
Tooth washing is to remove the tartar hidden around the tooth flesh and the stains on the tooth surface, such as tea stains, coffee stains, cigarette stains and so on. However, it should be noted that some stains cannot be removed, such as stains that go deep into the teeth. Habitual flossing:
When tooth flesh is red, swollen and inflamed, it is easy to cause bleeding during tooth washing or brushing. Please don't worry, if you can use dental floss and electric toothbrush correctly and take effective brushing methods, tooth inflammation and bleeding can be improved. Master the correct method of brushing teeth:
Use a reasonable toothbrush, brush your teeth vertically, both inside and outside. Rinse your mouth carefully after meals:
Gargling can remove food debris and some soft dirt, keep the mouth clean and give full play to its physiological functions. Chew fully:
Especially eating foods with high vitamin content can secrete saliva, wash away dirt in the mouth, play the role of gums, make teeth clean and periodontal tissue healthy. Bullet:
Knock your teeth ten times every morning to enhance the resistance of your teeth and periodontal tissue. * * * Gums:
After brushing your teeth in the morning and evening, gently press your cleaned fingers on your gums for a few minutes. Eat less sulfur-containing food:
Through scientific research, it is found that dairy products, onions, garlic and other foods containing a lot of sulfur are prone to produce anaerobic bacteria that cause bad breath. Chewing gum should be xylitol;
In fact, sugary chewing gum is more likely to cause tooth decay or bad breath. Therefore, choosing chewing gum containing xylitol can effectively strengthen teeth and ensure fresh breath. Fresh breath, not "aggressive", is also necessary for your interpersonal public relations.
4. Tips for protecting teeth
If you want to protect your teeth, you must first understand the structure of your 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.
5. What are the tips for dental care?
If you want to protect your teeth, you must first understand the structure of your 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.
6. Knowledge of tooth protection
Brush your teeth in the morning and evening and after meals.
Change a toothbrush every three months. Brush your teeth with warm water of about 36℃, which is similar to the oral temperature. Brush your teeth with different toothpaste. Key tooth foods Some ingredients in natural foods can fight against oral bacteria that cause tooth decay and strengthen tooth enamel.
Tea: Fluorine contained in tea can be combined with apatite tuberculosis in teeth, which has the functions of acid resistance and tooth decay prevention. Among them, oolong tea and green tea have the highest fluorine content.
Polyphenol contained in it is a complex composed of more than 30 substances, which has the efficacy of disinfection and sterilization, can reduce Streptococcus mutans causing tooth decay in the oral cavity, and has the effect of strengthening teeth. Drinking tea regularly can increase the flow of water and liquid in the mouth and maintain oral hygiene.
Sugar, pectin and other ingredients in tea react with saliva to moisten the mouth and enhance the self-cleaning ability of the mouth. Chewing tea can also cure gum bleeding.
However, it should be noted that when chewing, you should chew slowly and let the tea be ground and chewed into fine powder in your mouth before swallowing saliva. Onion: Onion, especially fresh raw onion, can kill many kinds of bacteria, including Streptococcus mutans, which causes our tooth decay.
Lentinus edodes: Lentinus edodes contains lentinan, which can inhibit bacteria in oral cavity from producing dental plaque. Mustard: Mustard contains some ingredients, which can inhibit the reproduction of Streptococcus mutans and lead to tooth decay.
Celery: Crude fiber food can sweep some food residues from teeth. In addition, hard chewing can secrete saliva, balance the pH in the mouth, and achieve natural antibacterial effect.
Besides celery, sliced cucumbers and carrots can also function as gums. Drinking water is the simplest but most important way to protect teeth.
Drinking water in moderation can make our gums moist and drool. Drinking some water after a meal can take away the food residue in the residual mouth and prevent the bacteria that damage the teeth from getting nutrition.
Sugar-free chewing gum Chewing sugar-free chewing gum containing xylitol has obvious effect on inhibiting bacteria causing dental caries.
Key-Tooth Exercise Chewing: Chewing foods with appropriate hardness, elasticity and high cellulose content, such as coarse grains, miscellaneous grains, vegetables and fruits, can exercise the chewing ability of oral muscles and teeth, and make tooth tissues tough and firm, and not easy to loosen. Chewing food fully when eating can * * gum, scrub tooth surface and bounce periodontal ligament, which can accelerate blood circulation, improve local nutrition and promote tooth health.
* * * Sticking to the gums for 5 minutes every day can promote blood circulation and tissue metabolism, exercise muscles and protect the skin, promote saliva secretion and clean the mouth, and achieve the purpose of strengthening teeth and exercising periodontal function. If the teeth are slightly loose, you can use your index finger * * * gum 10 minute every morning.
You can also roll the nucleus up and down in your mouth when talking about plums or apricots, which is of great benefit to prevent periodontitis and strengthen your teeth. Many people have the habit of brushing their teeth immediately after meals, thinking that this can minimize the chance of dental diseases.
However, recent research shows that brushing your teeth immediately after meals is harmful to your teeth health. This is because there is a layer of enamel on the surface of the crown, which will soften after eating, especially after eating acidic food.
Brushing your teeth at this time will cause enamel damage. Therefore, it is best to rinse your mouth with water after meals, and brush your teeth after 1-2 hours.
Non-smoking is good for protecting teeth. Smoking not only darkens teeth, but also damages alveolar bone.
Some data show that the alveolar bone injury of smokers is more than that of non-smokers, and the injury develops rapidly and seriously. A good mood is good for dental health.
Mental stress, anxiety and fear can all cause toothache, which is called psychogenic toothache in medicine. Insist on jogging, walking and other sports, and often take part in some physical labor within your power to keep healthy, which can delay the atrophy of periodontal tissue, improve the resistance of teeth and make them strong.
Patients with chronic lung disease must be more careful when brushing and cleaning their teeth. If oral care is improper, bacteria will accumulate in the mouth. These bacteria, which should be attached to teeth, will enter human saliva, increasing the possibility of severe lower respiratory tract infection in people with poor immunity. Dietary taboos of key teeth Nicotine in cigarettes will weaken the rehabilitation ability of oral tissues, reduce the body's resistance and cause periodontal disease.
Eating hard foods, such as bones and hard shell foods, will increase the possibility of tooth cracking. Always drink high-acid foods, such as juice, healthy drinks, soft drinks, yogurt, red wine and white wine.
It will make the enamel on the outer layer of teeth be eroded by acid, expose ivory and make dentine hypersensitivity sting. Eating too much can easily lead to tooth decay.
This is because after each meal, dental plaque in the mouth will metabolize sugar or starch in food to produce acid, which will lead to the loss of minerals on the tooth surface. Although saliva can neutralize acid, it takes some time.
If you eat too much, the acid in your mouth will continue to be produced, and saliva will not be able to neutralize the transition acid. Tooth extraction/filling: It is recommended not to extract teeth during menstruation.
The blood coagulation function decreases during menstrual period, and there may be massive bleeding after tooth extraction. During menstruation, women's nociceptive nerves are more sensitive and generally have poor resistance. After tooth extraction, the wound is easy to be infected.
You can't pull out your teeth when taking birth control pills. Contraceptives reduce the local anti-infection ability of oral cavity. If the impacted teeth are removed after taking birth control pills, more than 50% people will have wound infection.
It cannot be extracted in the first three months and the last three months of pregnancy. Tooth extraction in early pregnancy is easy to induce abortion, and tooth extraction in late pregnancy is easy to produce premature delivery. It is estimated that 80% pregnant women have dental complications, such as toothache and bleeding gums.
Therefore, dental diseases should be treated before pregnancy or during the third to sixth month of pregnancy. Women with gynecological diseases should protect their teeth in time.
Women's gums are one of the functional organs of estrogen. Women with gynecological diseases often have endocrine disorders, and the bacteria in their mouths are 3% to 5% higher than normal women, which is easy to cause inflammation. Therefore, patients with gynecological diseases should pay more attention to maintaining oral hygiene than ordinary people.
The best time for women to treat dental diseases is 8 ~ 14 days after menstruation, and the best time is 10 days after menstruation. At this time, there is less bleeding, less pain, low infection rate and fast wound healing.
After tooth extraction, it generally does not affect work, and you can go to work as usual. But don't engage in heavy physical labor or strenuous exercise.
People who have filled their teeth should not chew gum often. Chew regularly.
7. Summary of "Love your teeth and protect your teeth"
In order to let children know the importance of caring for their teeth from an early age, our class actively carried out the activity of "caring for their teeth", and every team member was immersed in a good atmosphere of "caring for their teeth". Under the guidance of the teacher, I feel how to have a healthy tooth through my own experience.
1, a few days before the activity, publicize the knowledge of dental care to students; There are also posters in the classroom and blackboard newspapers about tooth protection. Let the students make a handwritten newspaper to protect their teeth.
2. Carry out the class activities of "I love my teeth, I am happy".
(1) Educate students to pay attention to oral hygiene and protect their 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. Teach students to develop a good habit of brushing their teeth: brush their teeth once in the morning and evening, and rinse their mouths with warm water after meals. Pay attention to the correct brushing method: brush vertically along the teeth, and then brush outside after brushing inside; Don't brush back and forth horizontally, or you will damage your gums.
(2) Show some pictures about protecting teeth to students;
(3) According to the contents mentioned in the knowledge of dental care of "Little Doctor", let students understand the difficulties and give some explanations;
(4) Hold a quiz on "tooth care knowledge" among groups to compare which group of children know the knowledge of tooth care best, and the "small teeth" escort will be rewarded;
(5) Homework assignment: to publicize certain dental health knowledge to parents.
Through activities, the students realized the importance of protecting their teeth and formed a good habit of "caring for their teeth". At the same time, it helps them master some knowledge and skills of daily tooth care, and pay attention to developing good habits of protecting teeth in daily life, which lays a solid foundation for the cultivation of good habits of students in the future.