4hw.com.cn: speaking of teeth, I'm sure we can't be more familiar with them. We brush our teeth every day, but we still find our teeth turn yellow unconsciously. Yellow teeth not only affect our image, but also lay a hidden danger for our oral health. So what are the reasons for the yellow teeth? How to save the yellow teeth? Let's take a look at it with Xiaobian~
The cause of yellow teeth
There are many reasons for tooth yellowing, the most important of which are exogenous coloring and endogenous coloring.
Exogenous coloring
Exogenous coloring is due to the presence of many bacteria on the surface of teeth, which secrete a lot of viscous substances. Tea dirt, smoke stains in daily diet and some minerals in drinking water are adsorbed on these viscous substances, gradually making teeth yellow or even black.
Endogenous coloring
Endogenous coloration is formed during tooth development. In the process of tooth development, if infants drink water containing a large amount of fluorine for a long time, it will lead to dental fluorosis, and the tooth surface is light yellow or brown.
Master the right way to brush your teeth
Brushing teeth is a kind of oral health care method to remove plaque, soft dirt and food residue and keep the oral cavity clean. Some people think it's necessary to brush your teeth hard to get rid of the bacteria in your mouth. In fact, the right way to brush your teeth is to let the toothbrush and gum at a 45 degree angle, and let the toothbrush move gently in a circular motion, rather than moving back and forth.
'dietotherapy' of teeth
Many people don't know that teeth can also be whitened by "food therapy". Many foods have the effect of whitening teeth.
Celery
Celery belongs to crude fiber food, which can clean the food residue on teeth. When you chew celery, saliva will be secreted from your mouth. Saliva can balance the pH value of your mouth and prevent the acid from eroding your enamel. Therefore, eating celery can whiten teeth and inhibit oral bacteria.
Green Tea
Catechin in green tea can effectively reduce the formation of Streptococcus mutans (one of the factors causing tooth decay), and green tea can react with apatite in teeth, disintegrate the harmful substances in enamel, so as to reduce the probability of exogenous coloring. Therefore, drinking green tea can prevent tooth decay and whiten teeth.
onion
Sulfur compounds in onions are powerful antimicrobial agents. In the experiment, scientists found that onions can eat a variety of bacteria, including Streptococcus mutans. When Streptococcus mutans is reduced, it can not only reduce the probability of caries formation, but also prevent enamel from being damaged.
When we speak and smile in public, we can show a flawless white tooth, which can play a great role in improving our image. Not only that, oral health even affects the operation of our body. Having a healthy tooth is the basis of health. So we must take good care of our teeth all the time