There are many ways to whiten the teeth, but you have to know how to choose the right method. Only when you choose the appropriate way according to the basic condition of your teeth, can you get the best results. The following ten kinds of food can make your teeth much whiter just simply from eating.

First, celery
Crude fiber is just like a broom, which can clear away part of the food residues on the teeth. What's more, it can stimulate the secretion of the saliva, and balance the pH in the mouth, so as to play a natural antibacterial effect.

Second, guava / banana
Tropical fruits are rich in vitamin C, which can maintain the health of the gum. If there is a serious lack of vitamin C, the gum will become fragile, and will be susceptible to some diseases, leading to symptoms such as gum swelling, bleeding, teeth loosing or loss, and so on.

Third, cheese
and phosphate can balance the pH in the mouth, so as to change the acidic environment of the mouth which is beneficial to the activities of the bacteria, and to avoid tooth decay. What's more, it can also increase the calcium on the surface of the teeth, so as to make the teeth much stronger.

Fourth, sugar-free gum
It can increase the secretion of the saliva, and balance the acidity of the oral cavity, so as to further prevent tooth decay.

Fifth, mint
Mint leaves contain single terpenes compounds, which can reach the lung through the blood circulation, bringing you a fresh breath.

Sixth, water
Drinking water appropriately can keep the gum moist and stimulate the secretion of saliva. Drink water after eating can take away the food residue remaining in the mouth, so as to prevent the bacteria from getting nutrients and causing trouble and damage to the teeth.

Seventh, green tea
Green tea contains a large number of fluorine. When the fluorine combines with the apatite in the teeth, it can play an anti-acid effect and prevent tooth decay. What's more, the catechin contained in green tea can eliminate the bad breath.

Eighth, onion
The sulfur compound in onions is a powerful antibacterial ingredient. It can kill the streptococcus mutans which cause the tooth decay.

Ninth, mushroom
The mushroom polysaccharides contained in mushroom can prevent the formation of dental plaque.

Tenth, mustard
Mustard contains isothiocyanates, which can suppress the reproduction of streptococcus mutans, so as to prevent tooth decay.