Some ingredients in natural food 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 stimulate saliva secretion, balance the pH in the mouth, and achieve natural antibacterial effect. Besides celery, sliced cucumbers and carrots can also massage the gums. Drinking water is the simplest but most important way to protect teeth. Moderate drinking water can make our gums moist and stimulate powdered saliva. 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 massage the gums, scrub the tooth surface and bounce up the periodontal ligament, which has the functions of accelerating blood circulation, improving local nutrition and promoting tooth health. Massage gums for 5 minutes every day can promote blood circulation and tissue metabolism, exercise muscles and protect skin, promote saliva secretion and clean mouth, and achieve the purpose of strengthening teeth and exercising periodontal function. If the teeth are slightly loose, you can massage your gums with your index finger for 10 minutes every morning. You can also roll the nucleus up and down in your mouth and massage your gums when talking about plums or apricots, which is of great benefit to preventing periodontitis and strengthening 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 clean 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 stimulation such as nervousness, anxiety and fear can 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. Chewing gum often destroys the substances people use to fill their teeth and releases amalgam, which is harmful to the brain, central nervous system and kidneys, and even leads to death in severe cases. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _1.Remove food fillers between teeth in time. In the process of chewing food, dietary fiber is often stuck between teeth, which is harmful to teeth and periodontal tissue. We can clean and keep oral hygiene by brushing our teeth. 2. Give your teeth adequate nutrition. The development of teeth is inseparable from various nutritious foods. Therefore, whether adults or children, the diet should be diversified, not partial eclipse. 3. Develop correct chewing habits. The correct chewing method is bilateral or alternate use. 4. Correct bad habits that are harmful to teeth. Some infants and young children have dislocated and deformed teeth due to their habits of sucking their thumbs, licking their teeth, grinding their teeth, breathing with their mouths open and biting their lips. Correcting bad habits is beneficial to dental care. 5. Tea is good for preventing dental caries. The main components of tea that can prevent caries are fluorine, catechol and other substances. Fluorine ions can transform hydroxyapatite in enamel into fluorapatite, improve the structure of enamel and enhance its acid resistance. Catechols and other substances can inhibit the proliferation of Streptococcus mutans (that is, cariogenic bacteria) in the oral cavity. Drinking tea or gargling with tea often can protect your teeth and clean your mouth. At present, in many countries in Europe and America, drinking tea after meals has been regarded as one of the measures to solve the bad breath caused by eating more cheese and meat. Chewing a little tea immediately after eating garlic also has the effect of removing odor. 6. It is very important to brush your teeth before going to bed. After people fall asleep, the oral temperature and saliva secretion decrease, and bacteria are easy to multiply. Sugar fermentation produces acid, which corrodes teeth and forms tooth decay. Therefore, brushing your teeth as thoroughly as possible before going to bed plays an important role in preventing dental diseases. 7. Some drugs are harmful to dental health. Tetracycline, chlortetracycline and other drugs will make teeth yellow or enamel hypoplasia, which will easily lead to dental caries in the future, so don't take these drugs in large quantities or for a long time. 8. Prevent trauma. Don't bite hard objects with your teeth to avoid tooth damage. 9, regular inspection. Regular dental examination can prevent the growth of dental diseases. It is best for adults to have a dental examination once a year to find dental diseases and treat them in time.