Excessive fluorine content in the body affects health.
Excessive use of fluorine-containing articles may cause fluorosis, thus damaging the nervous system and causing osteoporosis. This is also the reason why the Belgian government proposed to ban fluorine-containing health care products. The application of fluoride can be divided into two categories: one is systemic application, including drinking water fluoride, salt fluoride, milk fluoride, fluoride tablets, fluoride drops and so on. At present, this kind of application has not been recommended in China; The other is local application, including fluoride toothpaste, fluoride mouthwash and fluoride protective paint. Compared with foreign countries, the application time of fluoride in China is short and the scope is small. Except for the wide application of fluoride toothpaste, there are few other methods to use fluoride.
According to Tang, an expert from Jinan Stomatological Hospital, high fluoride content in the body has a great influence on teeth. If chronic fluorosis occurs, permanent teeth will be dull and white, moderate poisoning will turn yellow, and deep poisoning will lose teeth. On the other hand, people will get fluorosis, and there are many protrusions on the bone surface. Some bone spurs in the elderly may be caused by fluorosis. 10 years ago, when Director Zhang Zhan conducted an oral health survey in Weifang City, Shandong Province, he found that almost all young people had dental fluorosis. After examining their arms, he found that they all had protrusions on their radii. After investigation, it is found that this area belongs to the high fluorine area, and if fluoride is ingested in other ways in the high fluorine area, the degree of fluorosis may be aggravated. Fu Weimin, chief physician of the internal medicine department of Jiangsu Provincial Hospital of Traditional Chinese Medicine, believes that the lack of fluoride in human body will show some nervous system diseases such as emotional instability, but this situation is rare in China, and there is no need to deliberately supplement fluoride-containing foods in life.
Fluorine toothpaste is the most effective in preventing dental caries.
Although fluoride content affects health, experts still affirm the preventive effect of fluoride toothpaste on dental caries. Zhu, the chief physician of the Department of Prevention of Nanjing Stomatological Hospital, Jiangsu Province, told the reporter that the preventive effect of fluoride toothpaste on dental caries had been studied and confirmed more than 50 years ago, and the use of fluoride toothpaste could increase the hardness of teeth.
It is understood that before toothpaste appeared, people used tooth powder to brush their teeth. Tooth powder is a mixture of calcium carbonate and soap powder, which only keeps teeth clean and removes stains. The high pH value of tooth powder can cause inflammation of oral tissue. After World War II, toothpaste with therapeutic effect came on the market one after another. In particular, toothpaste with synthetic detergent sodium lauroyl sarcosinate instead of soap is favored by the public. This kind of cleaning agent can not only significantly reduce oral inflammation, but also make toothpaste smell very fragrant, and has the effect of inhibiting plaque acid which causes tooth decay.
In the early 1950s, some epidemiological studies pointed out that fluoride had the function of preventing and treating dental caries. As a result, toothpaste containing stannous fluoride (SnF2) appeared in 1955. Later, sodium monofluorophosphate (MFP) replaced stannous fluoride and became the most widely studied fluoride in the world. At present, fluoride added to toothpaste to prevent dental caries also includes sodium fluoride and amine fluoride. Experts generally believe that all these fluorides have the same effect in preventing and treating dental caries when the fluoride ion concentration provided is equal. Experts told reporters that fluoride can prevent and treat dental caries mainly because fluoride ions react with substances on the surface of teeth, mineralizing these substances and making teeth strong. Fluorine toothpaste can also reduce tooth decay, because it is more compatible with the larger hydroxyl ions in apatite crystal structure, and can also inhibit the acid production of oral bacteria, change the suitable living environment of oral bacteria, thus preventing tooth decay. Fluoride toothpaste has reduced the dental caries of millions of people in Qian Qian all over the world, and kept their teeth longer.
Not everyone can use fluoride toothpaste.
As a substance for strengthening bones and teeth, the World Health Organization has always recommended the use of fluoride toothpaste to prevent dental caries. At present, the use of fluoride toothpaste is very common in China, and many manufacturers also promote it with "fluoride" as a selling point. In fact, in the ecological environment of different regions, the content of fluoride itself is high or low, so fluoride toothpaste is not suitable for everyone.
At present, fluoride toothpaste, as the flagship product of many manufacturers, is marked with fluoride in the obvious position of toothpaste packaging. Scientific experiments have proved that fluoride toothpaste can prevent dental caries, but when promoting fluoride toothpaste, should consumers be informed whether excessive intake of fluoride will cause harm? Especially in China, there are some high fluorine areas in other provinces, municipalities and autonomous regions except Shanghai.
Professor Liang Chaoke from the Environment Institute of China Center for Disease Control and Prevention pointed out that fluoride has little effect on adults, mainly on bones. There is no need to promote fluoride toothpaste in high fluoride areas. According to our investigation, the incidence of dental caries in high fluoride areas is relatively low. People in these areas, especially children, should not use fluoride toothpaste. Zhang Zhantang, an oral prevention expert at Jinan Stomatological Hospital in Shandong Province, believes that children are prone to fluorosis through toothpaste. They have poor self-control and are easy to swallow toothpaste, so their fluoride intake may be high, resulting in high fluoride content in their bodies. In June, 5438+10, the researchers measured the amount of toothpaste swallowed by children aged 3-6 in a kindergarten in Beijing. The results showed that children aged 3-4 swallowed a lot of toothpaste by mistake, and at most, they swallowed more than 80% toothpaste by mistake. Director Zhang told reporters that the high fluorine content in the body poisoned and denatured the oil-producing cells in the process of tooth growth and development, thus forming dental fluorosis. In other words, it is very unlikely that teeth will become dental fluorosis when they mature. Adults mainly absorb fluoride in toothpaste through oral mucosa, so the fluoride intake through fluoride toothpaste is very small, which will not cause much impact, but the prevention of dental caries needs long-term persistence.
Professor Liang Chaoke from the Environment Institute of China Center for Disease Control and Prevention said: In order to protect children's dental health, many parents choose fluoride toothpaste when buying toothpaste. Scientific experiments show that dental fluorosis usually occurs in infants, especially in the critical period of children's tooth development before the age of 6. During this period, the use of fluoride toothpaste is the main source of daily fluoride absorption for children, and long-term use will cause dental fluorosis. Therefore, stomatologists remind consumers that children before the age of 3 should be forbidden to use fluoride toothpaste, children aged 4-6 should use it carefully under the guidance of adults, and children over the age of 7 can use it, but toothpaste should not be swallowed. Pay attention to the amount of toothpaste when brushing your teeth. It's best to use only the size of soybean grains at a time, not more than 1 cm at most, instead of crowding the whole toothbrush like TV commercials.
The reporter found in the supermarket that now, many toothpastes clearly point out that they have the function of preventing caries, but they are not marked with fluorine. In this case, experts remind parents that fluoride is used in toothpaste with caries prevention function at this stage, which must not be ignored when buying toothpaste for children.
How to choose fluoride toothpaste correctly
At present, there are many kinds of medicinal toothpaste, and consumers are at a loss. Especially when choosing fluoride toothpaste, we should be careful and use it with caution. Choosing fluoride toothpaste must meet the following conditions:
1. Low fluorine area is available and high fluorine area is disabled. The fluorine content in drinking water can be less than lPPM, but it is not suitable to use more than 2PPM.
2. Children should use it with caution, and preschool children should not use it. Because children have poor self-protection ability, most of them brush their teeth passively and perfunctorily, and the toothpaste left between their teeth is not clean. Children under 4 years old even swallow mouthwash and toothpaste together, which is even more harmful. Every time you brush your teeth, you should be supervised by an adult.
3. Heavy industry intensive areas cannot be used. In the production process, fluorine diffuses with the "three wastes", which pollutes the environment and increases the fluorine content in this area. According to statistics, a phosphate fertilizer plant with an annual output of 40,000 ~ 50,000 tons will emit 35,000 cubic meters of waste gas per hour, including about 50 kilograms of fluorine, which greatly exceeds the safety amount.
4. It is suggested that manufacturers mark the warning words "Fluoride is toxic and cannot remain after brushing teeth" on the toothpaste box to remind people to take precautions.
5. Use with caution for the elderly. People over 50 years old have organ dysfunction, endocrine disorders and osteoporosis. If fluoride toothpaste is used again, it will undoubtedly add fuel to the fire.
6. Before using fluoride toothpaste, you must carry out education on preventing fluorosis, correctly master the method of brushing your teeth, thoroughly remove the toothpaste left between your teeth after brushing your teeth, and don't swallow toothpaste and mouthwash into your stomach.
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Use toothpaste containing fluoride with caution.
Moderator: Fluorine is a substance that can strengthen bones and teeth. The World Health Organization has always recommended the use of fluoride toothpaste to prevent dental caries. At present, the use of fluoride toothpaste is very common in China, and many manufacturers also promote it with "fluoride" as a selling point. In fact, in different ecological environments, the content of fluoride itself is high or low, so fluoride toothpaste is not suitable for everyone.
At present, fluoride toothpaste, as the flagship product of many manufacturers, is marked with fluoride in the obvious position of toothpaste packaging. Scientific experiments have proved that fluoride toothpaste can prevent dental caries, but when promoting fluoride toothpaste, should consumers be informed whether excessive intake of fluoride will cause harm? Especially in China, there are some high fluorine areas in other provinces, municipalities and autonomous regions except Shanghai. In this regard, we interviewed Professor Liang Chaoke from the Environment Institute of China Center for Disease Control and Prevention.
Liang Chaoke: Excessive fluoride can cause fluorosis, and the main symptoms are dental fluorosis and skeletal fluorosis.
Experts remind consumers that when buying fluoride toothpaste, they should consult the local health and epidemic prevention department whether it belongs to the high fluoride area. Because the country has invested a lot of manpower and financial resources in these areas, it is necessary to transform them from high fluorine areas in the ecological environment to low fluorine areas to reduce the human body's intake of fluorine.
Liang: Fluoride mainly affects the bones of adults. When the teeth are formed, the effect is not great. In high fluoride areas, I don't think it is necessary to promote fluoride toothpaste. According to our investigation, dental caries are relatively low in high fluoride areas. Children in particular should not use fluoride toothpaste.
Tip 1: Do not use fluoride toothpaste in high fluoride areas.
Many parents choose fluoride toothpaste to protect their children's dental health when buying toothpaste. Scientific experiments show that dental fluorosis usually occurs in infants, especially in the critical period of children's tooth development before the age of 6. The use of fluoride toothpaste is the main source of children's daily fluoride absorption, and long-term use will become an important incentive for dental fluorosis. Then we interviewed Dr. Cheng Yuhua from the Chinese Stomatological Association on how to care for children's teeth.
Cheng Yuhua: When children use fluoride toothpaste, they should use children's toothpaste and don't mix it with adult toothpaste, because the fluoride content of children's toothpaste is lower than that of adults, especially for those children who haven't mastered gargling skills well, such as children who just started brushing their teeth at the age of 2 or 3. Sometimes I can't spit well, and sometimes I swallow it. At this time, it is generally recommended not to use toothpaste for a while.
Tip 2: Children should use toothpaste for children, not adult toothpaste. Children before the age of 3 should not use fluoride toothpaste.
There are more and more fluoride toothpaste for children, and eating fluoride toothpaste by mistake will be harmful to children, so experts remind preschool children to control the dosage when using fluoride toothpaste.
When preschool children use fluoride toothpaste, they usually squeeze it into a toothbrush within one centimeter, which is generally the size of peas. After brushing their teeth, they should rinse the toothpaste, spit it out and don't swallow it.
Tip 3: The dosage of "soybean" paste when preschool children use fluoride toothpaste.
Moderator: Fluorine is an essential trace element for human body. Like any trace element, it has a suitable and safe application range. At present, some merchants have marked the dosage on the product packaging while promoting their fluorine-containing products. At the same time, in order to better protect dental health, consumers are advised not to use the same toothpaste for a long time, but to change the type of toothpaste frequently.