Is whiter teeth healthier?

"Is the whiter the teeth, the healthier they are?" In fact, the true color of healthy teeth is not so white. The strongest teeth are natural and healthy yellowish teeth. Because the surface of our teeth is covered with a layer of enamel, it is mainly composed of 95%-97% calcium-containing and phosphoapatite crystal inorganic substances, and it is transparent or translucent. The higher the degree of calcification, the more transparent the enamel is. However, dentin is yellowish. After enamel calcification, dentin will appear, so healthy teeth look pale yellow. On the contrary, when the degree of enamel calcification is low and the transparency is low, abnormal white or milky white will appear.

Many young people think that the whiter the teeth, the healthier. When choosing toothpaste, they especially buy toothpaste with whitening effect. In fact, this kind of cognition is also wrong. Toothpaste is generally composed of friction agent, foaming agent, aromatic agent and molding agent, among which the friction agent is the most important component. When brushing teeth, the friction agent rubs the teeth, thus achieving the effect of removing tooth stains and dirt. Therefore, the effects of various toothpastes should be similar, mainly used to clean teeth. Even toothpaste with special whitening effect has limited whitening effect.

There are several ways to whiten teeth: the first way is to wash and clean teeth, which mainly removes tartar and stains attached to the surfaces and gaps of teeth, revealing the original color of teeth and achieving a clean and transparent effect. Tooth washing is a healthy lifestyle. Brushing teeth in a regular hospital will not damage enamel, but also remove dental calculus and protect periodontal health. The second is chemical bleaching, such as cold light whitening, which is achieved by coating a special whitening agent on the tooth surface and irradiating it with high-intensity blue light. The third kind is tooth plaster, which puts a layer of white porcelain on the surface of teeth, directly bringing whitening effect to teeth.

It should be noted that tooth whitening is not permanent. In life, we eat many colored foods, such as coffee, soy sauce, tea and so on. This will slowly recolor our teeth.