Tip 1 of tooth whitening: Lemon

Lemon juice has a strong cleaning effect, which can remove tartar, whiten teeth and improve yellow teeth. It is rich in VC, which can strengthen teeth. Of course, remember to be gentle when brushing your teeth.

Teeth whitening tip 2: vinegar

Both white vinegar and aged vinegar can be used. Put vinegar in your mouth for 1 to 3 minutes, then spit it out and brush your teeth. One disadvantage is that this method will make teeth numb and sour, so it is not recommended to use it often unless it is an emergency.

Teeth whitening tip 3: baking soda

Add a little baking soda to toothpaste every time you brush your teeth. After brushing for several times, your teeth will turn white slowly. This method is mainly aimed at the yellow teeth caused by tooth rust.

Teeth whitening tip 4: orange peel

After drying the orange peel, grind it into powder, mix it with toothpaste and orange peel powder every time you brush your teeth, and then brush your teeth, which has a good whitening effect.

Tip 5 for tooth whitening: Green Apples

If you want to prevent teeth from becoming yellow, the simplest and most effective way is to brush your teeth after every meal. At the same time, Pia Lieb, a dentist in new york, recommended eating green apples with low sugar content as snacks after meals, which can achieve the same effect of tooth cleaning as brushing teeth. This is because the rich cellulose and proper amount of fruit acid in green apples can remove dirt and make teeth white.

Causes of tooth discoloration:

Dental fluorosis: Dental fluorosis is mainly caused by excessive fluorine content in drinking water. In mild cases, the enamel on the tooth surface is opaque and chalky; In moderate cases, the tooth surface is yellow or brownish yellow with irregular patches; In severe cases, there are not only color changes, but also tooth enamel defects.

Tetracycline teeth: During the development of teeth, especially children under 8 years old or pregnant women, if taking tetracycline drugs (such as tetracycline, oxytetracycline, doxycycline, etc.), it is easy to cause tooth discoloration, which is called tetracycline stained teeth. This is because tetracycline drugs can combine with calcium ions in tooth tissue to form stable tetracycline calcium salt, and the discoloration will gradually increase with age, and it will tend to be stable after about 18 years old.

Pigment deposition: Some colored foods include tea, coffee, soy sauce, etc. For a long time, due to the lack of good habits of cleaning teeth, these pigments will gradually deposit or even enter the deep layer of teeth, making the surface of teeth begin to turn yellow and black. This is just like white clothes that have been dyed for a long time, and how to clean them can't make them white again. It is difficult for ordinary tooth cleaning methods to make the dyed teeth white again.

enamel hypoplasia: during the development of teeth, the surface enamel is deficient in calcium, phosphorus, vitamins A and D, or is affected by harmful factors, resulting in tooth development disorder. The enamel on the light tooth surface is opaque chalk, loose and rough, and can be yellow-brown due to food staining; In severe cases, there may be a substantial defect in enamel, which is a nest-like or banded defect, or even no enamel coverage.

Reference: Small coup for daily tooth whitening-Xinhuanet? Tooth discoloration? Two kinds of fruits can make teeth white-Xinhuanet