1, the method of whitening teeth
1, lemon+apple vinegar
Nicotinic acid in lemon can effectively remove tartar, and vinegar gum in apple vinegar can also whiten teeth. I suggest you mix lemon juice and apple vinegar in the ratio of 1: 1, dip it in a cotton pad and gently wipe the surface of your teeth. Once every morning and evening, it will take effect after one week.
2. chew celery.
The dental health food recommended by French health expert Jean Jigger is celery. He thinks that when you chew celery, it is equivalent to giving your teeth a general cleaning.
The rich crude fiber in celery can effectively remove food residues attached to teeth and reduce pigmentation. In addition, the phosphorus and iron in celery can make teeth harder, but you must chew raw celery.
3, enough vitamin C.
Some data show that 40% of yellow teeth are caused by calcification. Adequate vitamin C can effectively prevent bone calcification and maintain the natural color of teeth. I suggest you eat more fruits and vegetables rich in vitamin C, such as broccoli, tomatoes, kiwis, strawberries, etc., which are the guarantee to make your teeth bright and white.
4. Chew sugar-free gum for 7 minutes.
Chewing sugar-free gum can increase saliva secretion, neutralize acidity in the mouth and prevent teeth from discoloring due to corrosion.
A study by dental experts at the University of Minnesota in the United States found that xylitol in sugar-free chewing gum can also effectively inhibit the bacteria that cause dental caries, so that you will not grow "worm teeth". But generally speaking, chewing gum for 7 minutes a day is enough, and chewing more will make the masticatory muscles bigger.
5, mustard+green tea powder
Mustard contains an ingredient called isothiocyanate. Experiments show that this ingredient can effectively inhibit the reproduction of streptococcus in the mouth and prevent teeth from discoloring due to the corrosion of acidic substances.
If you don't like the taste of mustard, I suggest you dip in some green tea powder before eating, which will not only neutralize the spicy taste of mustard, but also make your teeth harder with the antioxidants in green tea.
6, 30-50 grams of cheese
Cheese is not only a good source of calcium, but also contains a lot of phosphate, which can effectively balance the pH in the mouth and strengthen the reconstruction of enamel on the tooth surface, and is most suitable for damaged teeth. If you feel that the color of your teeth is not ideal recently, it is recommended that you add 30-50 grams of pure cheese to your breakfast every day.
7. Use an electric toothbrush
Electric toothbrush is called "a great invention in the history of oral research in 2 1 century". Experiments show that the electric toothbrush can remove 38% more dental plaque than the general toothbrush, and the long-term use can improve the tooth brightness by more than 20%.
More importantly, it can reduce the intensity of brushing teeth by 60% without hurting gums. However, the brush head of the electric toothbrush needs to be replaced every three months, because after three months, the bristles become rough and the cleaning effect is reduced.
According to the survey, among the people who complain that electric toothbrushes have little effect on the brightness and whiteness of teeth, 80% people rarely change their toothbrush heads.
8. Use mouthwash 2-3 times a week.
Gargle water contains thyme powder, menthol, salicylic acid and other ingredients, which can inhibit the formation of dental plaque and strengthen enamel. Moreover, mouthwash can moisten the oral mucosa, play the role of artificial saliva and improve your digestive ability.
Oral experts suggest that mouthwash should be used 2-3 times a week, and avoid eating as much as possible within 30 minutes after gargling, so that mouthwash can fully play its role in the mouth and whiten teeth.
2. Food for whitening teeth
1. pineapple. Bromelain in pineapple is a natural cleaner, which can remove dental plaque. Citrus fruits such as oranges can also stimulate saliva secretion and naturally clean teeth.
2. spinach. Dark green leafy vegetables such as spinach and lettuce contain a series of minerals such as magnesium, which is helpful to the formation of antifouling film on tooth surface and plays an important role in keeping enamel white.
3. apples. Eating apples helps to remove dental plaque. Malic acid in apples helps to dissolve substances that cause tooth coloring.
4. salmon. Deep-sea cold-water fish such as salmon contain omega-3 fatty acids and phosphorus, which helps to strengthen tooth enamel. Salmon is also a good source of vitamin D, which helps the body absorb calcium, thus making teeth healthier.
5. strawberries. Like apples, strawberries also contain malic acid. It can remove colored substances on the surface of teeth, and eating strawberries can also help "grind teeth" and make teeth whiter and brighter. Mash strawberries and add half a teaspoon of baking soda to make natural tooth bleach.
6. carrots. Eating carrots raw can play a role in brushing your teeth. It not only helps to remove food residues in the mouth, but also stimulates saliva secretion, so that the mouth can be naturally cleaned.
7. onions. Onion contains two sulfides-thiosulfinate and thiosulfonate, both of which have strong antibacterial effect and can kill Streptococcus mutans causing dental caries. Garlic also contains these sulfides.
8. yogurt and cheese. The rich trace elements such as calcium and phosphorus in dairy products help to balance the pH value of the oral cavity and avoid the oral cavity being in an acidic environment all the time, thus improving the health of enamel. Eating dairy products regularly can increase calcium on the surface of teeth, strengthen and rebuild enamel, and clean and strengthen teeth.