What causes teeth to turn yellow?

　　drink cola

　　The ingredients of cola are syrup and carbon dioxide. If you drink too much, the sugar will settle on the surface of the teeth, making them black. A study found that if you drink 1 liter of cola every day, half of the enamel on the tooth surface will be eroded by acid in two years. Among carbonated drinks, dark cola is the most damaging to teeth, followed by orange soda. Generally speaking, the lighter the drink, the safer it is. It is recommended that you choose transparent Sprite!

　　eat curry

　　In the latest "Tooth Staining Ranking" released by the American Dental Association, turmeric, the main ingredient in curry, surpassed nicotine and ranked first, having the greatest impact on tooth color. Studies have pointed out that turmeric’s staining effect on teeth is almost irreversible, making it a veritable “white teeth nemesis”. If you really like that spicy feeling, it is recommended that you choose green curry, which has the weakest dyeing effect, and avoid red curry and yellow curry, which have stronger dyeing effects!

　　Do you know how the upper class in Western countries judge beauties? The answer is: watch your teeth! In the eyes of etiquette experts, teeth are a woman's business card. If your teeth are neat, white, and your breath is fresh, you must be an educated lady. But if your teeth turn yellow, people’s impression of you will be greatly reduced!

　　drink mineral water

　　On the one hand, fluoride can increase tooth enamel and make it stronger, but on the other hand, it can also make teeth gradually turn yellow. Mineral water contains a lot of fluoride. Drinking too much will make your white teeth look discolored! American Oral healthy Experts recommend that each person drink at least 1,000 ml of plain water every day, of which the mineral water intake should not exceed 300 ml. The remaining 700 ml can be consumed as purified water or boiled tap water.

　　Drink black or dark tea

　　There are a lot of polyphenol oxides in tea, and long-term tea drinking will cause your teeth to turn yellow. Research has found that black tea has the highest polyphenol oxide content, followed by dark tea, and Pu'er tea and barley tea have the lowest polyphenol oxide content. You can drink it with confidence! In addition, the longer the tea leaves are brewed, the less effective the oxides are. In order to ensure that you have white teeth, you can extend the tea brewing time appropriately!