With the increase of age, people's teeth begin to have various problems, and yellowing of teeth is a common phenomenon. Many people are afraid to show their teeth when they are in Lian Xiao because their teeth are yellow. They are embarrassed for fear that their teeth will be laughed at by others. Because teeth are yellow, many people use tooth washing to whiten their teeth, but they are worried that tooth washing is not good for their teeth. Are there some tips for tooth whitening in life?

1, baking soda whitening teeth

Practice: soak the toothbrush in baking soda, and all the bristles should be soaked into white, then brush your teeth for 2 minutes, spit out the baking soda and rinse your mouth with clear water.

Note: If there is an odor, you can rinse your mouth with mouthwash. Baking soda can not be used excessively to whiten teeth, and can be used once a week without discomfort after use.

2, lemon juice whitening teeth

Practice: Mix lemon juice and warm water evenly according to the ratio of 1: 1, then rinse your mouth. Finally, rinse your mouth with clear water.

Note: Be sure to rinse with clean water. The acidity of lemon will wear away the whiteness of teeth, and you can only use 1 time a week to protect teeth.

3, white vinegar whitening teeth

Practice: You can put vinegar in your mouth for about 2 minutes, spit it out and then start brushing your teeth. Finally, rinse with clean water.

Note: Don't leave white vinegar in your mouth for too long, or your teeth will be sour and corroded. Usually used once every 1 month.

4, strawberry whitening teeth

Strawberries contain a natural emulsion that can help remove stains-malic acid can help whiten teeth.

Practice: rubbing half a strawberry with your teeth or mashing strawberries and then applying them to your teeth can get the maximum benefit. Let it apply for a minute, and then rinse it off. Or you can eat strawberries in moderation every day.

5, green tea whitening teeth

Catechins contained in green tea can help reduce streptococcus, and fluoride can combine with apatite, which is a component of teeth.

Practice: rinse your mouth with green tea every day or drink green tea often.

Note: People with bad stomach can't drink green tea, and women during menstruation, pregnancy and lactation should not drink green tea.

6. Methods to prevent tooth discoloration

1. Drink water through a straw. John C. Moon, a dentist in Half Moon Bay, California, said that drinking coffee, soda, tea and other drinks through straws can minimize the contact between drinks and tooth surfaces, significantly reduce the chance of teeth being colored by drinks, and make teeth whiten for a longer time. 2. Eat tooth whitening food after drinking red wine or coffee. Apple, for example, is slightly sour and astringent, and its coarse pulp rich in fiber makes it an ideal food for cleaning teeth. Chewing apples, celery, carrots and other foods carefully can clean teeth like a toothbrush and wipe away stubborn stains on teeth.

3. Self-made whitening toothpaste. Jennifer Jablo, a plastic dentist in new york, said: "Particles can remove stains and polish teeth, but they are not corrosive enough to damage enamel." Self-made whitening toothpaste can be made of baking powder and water. It can be used several times a month to remove the coloring on the tooth surface and make the teeth white.

4. Choose the right lipstick. Jessica Libiskey, a makeup artist in new york, said: "Lipstick with a blue background will make teeth look white." In order to make it easier to distinguish, three or four lipsticks with different background colors can be identified side by side.

5. Reduce heartburn and acid reflux. Edmund Hugh Park Jung Su, a consultant of the American Dental Association and a professor at the College of Stomatology of the University of California, said that acidic water in the digestive system will flow back into the mouth, which will erode the enamel like the acid in soda water or sports drinks. Therefore, it is necessary to consult a professional doctor to control the reflux of gastric acid.