The toothpaste we used in the past few years is basically white, but now, red, green, blue, and yellow, as well as color bars, sandwiches, color films and other effects, colorful and dazzling. Not long ago, the Chinese "Magic Xun Bai" toothpaste with a blue paste was smashed "it is suspected of exaggerating the efficacy of the product." Are the colorful toothpastes on the market really amazing?
Ms. Chen, who lives in Harbin, told reporters that every time she used this blue white toothpaste, her mouth always felt like she was not clean. Sometimes there would be some blue on the teeth. Can I still not know how to whiten, but always Worried about harm to the body. In this regard, Professor Bi Liangjia, a member of the Chinese Academy of Stomatology's periodontology group, told reporters that there are only two ways to whiten the teeth, that is, to remove the tooth surface stains and improve the brightness of the teeth themselves. The former needs to go to the hospital for treatment, and the latter needs to use a whitening agent to oxidize and decompose the tooth surface spots to achieve the purpose of whitening teeth. The ingredients of toothpaste mainly include friction agents, foaming agents, moisturizers, thickeners, preservatives, fragrances, sweeteners and water. The only ingredients that can have an indirect effect on tooth whitening are friction agents and foaming agents. And because of the limitation of the action time of the toothpaste in the oral cavity and the dilution of the active ingredient during brushing, the effect is very limited, and even for the exogenous stain, it is impossible to achieve whitening by brushing a few teeth. The Chinese "Magic White" uses only the blue substance in the toothpaste to adhere to the surface of the tooth, covering the yellow teeth, which gives a visually whitened feeling under the light. Adding food coloring to color toothpaste is not harmful to the human body, but it does not help the effect. Some toothpastes contain sulphur, which can contaminate the tooth surface for a long time, making the teeth tarnish and affecting the appearance of the teeth.
Professor Bi Liangjia said that the basic function of toothpaste is to clean, and other various effects are only additive, not important. When buying toothpaste, mainly look at the quality of the friction agent. Ding Xiaoyi, deputy secretary-general of the Chinese Stomatological Association, said that aluminum hydroxide and calcium hydrogen phosphate are better, followed by silica, and calcium carbonate has the lowest grade. In addition, the particles of various abrasive agents are different in size, and the finer particles have less damage to the tooth surface. For ordinary people, a tube of ordinary white toothpaste is the best. Most of the common toothpastes contain borneol, clove oil, menthol, spearmint, thyme, fragrant phenol, etc., which are rich in flavor, cool and refreshing, and have no adverse reactions. In addition, some "functional toothpaste" may cause side effects if not used properly. For example, long-term use of the drug ingredients in the toothpaste of the drug may cause imbalance of the flora in the oral cavity, and some drugs may enter the intestine; long-term use of calcium-containing toothpaste may increase the concentration of calcium ions in the oral cavity and promote the formation of dental calculus; Toothpaste hypertensive patients should be used with caution.
(Editor: Xu Xiaoyu)
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