Have a bite as white as the teeth, and the image will allow you to add cent! But in life, many people find it is very attention maintain of tooth is hard to turn white, what reason is this? May be you ignore these let teeth yellow factors. In the etiquette expert eye, teeth is women's business card, if your tooth neat, clean, fresh breath, then you must be an educated lady. But if your teeth light yellow, people the impression to you will greatly abate. 1, teeth and bones of calcium of important part! When the body loss of calcium, the stiffness teeth is greatly reduced and the absorption of food to stronger, causing the pigmentation, teeth yellow.best sunglasses Therefore suggest that you regularly take calcium tablet and vitamin D, help the body synthesis quality calcium. Also don't forget, going to the countryside to bask also can make teeth absorb more calcium element! 2, drink water fluorine on one hand can increase the tooth enamel, make it stronger, on the other hand, still can make teeth gradually become yellow. Mineral water contains a lot of fluorine elements, drink too much, can let your a blank white teeth! The United States oral health experts advise: each person every day at least 1000 milliliter drink water, mineral water intake of not more than 300 ml, leaving 700 ml, can drink water or boiling water. 3, a toothbrush is too hard for clean effect, soft hair than bristles toothbrush toothbrush. But hard to wear of the tooth brush MAO role is bigger, often use will damage the tooth enamel surface, make the pigmentation. Commonly used bristles of a toothbrush, even teeth hard, color also not too white! So suggest you prepare the hard and soft two toothbrush every three days bristles with times toothbrush, thoroughly clean of plaque. But don't use in menses bristles toothbrush! For then body metabolism level is not stable, the tooth enamel more damaged! 4, drink black tea or black tea in the tea polyphenols of oxide, long-term drinking tea, can let the teeth to become yellow. Research found that black tea in the tea polyphenols oxide supreme, and dark tea next, puer tea in the tea polyphenols, barley oxide content minimum, you can safely drink! In addition, cook tea time to grow more, the importance of oxide will be lower, and in order to ensure that he was a white teeth, you may be extended appropriately cook tea time! 5, drink coke cola Coca-Cola components are the syrup and carbon dioxide gas, drink too much, can make candy calm in tooth surface, and make the color black. A study found that if everyday drink 1 l coke, two years after the enamel of tooth surfaces will be acid corrosion off half. On the carbonated soft drinks, brunet coke teeth to damage the largest, orange soda next, generally speaking, the color is more shallow drinks as safe, suggest you choose transparent color of the Sprite! 6, my teeth cleaned any reduction WHO (world health organization) dental experts say, as long as usually pay attention to the teeth cleaning, and ordinary people every year washing a tooth is enough, if you often smoking, that need cleaning every year two or three times. The expert points out, any reduction in the teeth cleaning will increase, tooth department allergy, food particles and colour and lustre easily attached on the tooth surface. 7, eat curry in the American dental association the latest "teeth dyeing list" on, the main components of the curry turmeric more than nicotine, ranking first,discount sunglasses the biggest influence on teeth color. Research points out, the dyeing effect of the teeth turmeric almost irreversible, is worthy of the name "white teeth buster". If you really like that feeling steady, suggest you select dyeing force the weak green curry, avoid force strong red curry and yellow curry! 8, drug toothpaste common saying says "it is medicine 3 minutes poison", drug toothpaste can control the generation of pathogenic bacteria though, but will also destroy the mouth of the "ecological balance", sparked new infection. More important, the drug toothpaste alkaloids will damage the tooth enamel surface, make teeth lose luster! 
see more:Often bubble hot spring promoting blood circulation to prevent arteriosclerosis sterilization
Rotten teeth not to pull out careful cause oral cancer