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What's the difference between 5 yuan toothpaste and 25 yuan toothpaste

4hw.org: toothpaste is an essential daily necessities for us. There are a variety of toothpastes in the supermarket, ranging from a few yuan to dozens of yuan. Some people think that expensive toothpaste must be better than cheap toothpaste. Is that true? What are the differences between five yuan toothpaste and 25 yuan toothpaste? Let's take a look at them!

Fluoride is an effective anti caries component. The Chinese Stomatological Association recommends that all people should use fluoride toothpaste. Children under 3 years old can use toothpaste with less fluoride, and control the dosage, but not unable to use it.

At present, there is no Chinese herbal toothpaste with proven hemostasis effect. Gingival bleeding is a manifestation of gingivitis. Ignoring the existence of inflammation and simply hemostasis may delay the opportunity of treatment, leading to more serious consequences.

The saying "do not use the same toothpaste for a long time" is widely spread. At present, there is no evidence that toothpaste can make bacteria in the mouth resistant. The germicides used in toothpastes are so common. You may have changed several toothpastes, but they are the same.

Verified by: Xu tongkai, general practitioner of Stomatology, Stomatology Hospital, Peking University

Recently, another toothpaste article became popular in the circle of friends: "what's the difference between a 5 yuan toothpaste and a 25 yuan toothpaste? The truth is amazing!". The title is very good, there are questions about the number and suspense, many friends send messages to ask if I wrote it, I glanced at it a few times, how can I write so many mistakes?! the article said: 'cheap and expensive toothpastes have the same main ingredients, the expensive ones are often some additives, such as adding some anti allergy, hemostasis, whitening ingredients. Therefore, the article introduces the effect of various toothpastes on the basis of "taking the right medicine". But there are loopholes and misleading in the content.

In order to avoid being misled, I'll pick out a few points and tell you more.

I. the toothpaste in the supermarket is divided into ordinary toothpaste, medicated ointment and fluoride toothpaste?

True appraisal: wrong common sense

According to the relevant regulations of our country, toothpastes are divided into ordinary toothpastes and effective toothpastes. Among them, fluoride toothpastes, desensitized toothpastes and plaque inhibiting toothpastes are all effective toothpastes, but there is no drug toothpastes. Drugs must be used under the guidance of doctors.

2. The common friction agents are calcium carbonate, calcium hydrogen phosphate and calcium pyrophosphate, among which the friction of calcium carbonate is strong, which is used to clean tea stains and smoke stains of teeth?

True appraisal: exaggerating facts

In addition to calcium carbonate, the latter two are not common. As a friction agent, calcium carbonate is of low grade and coarse particles. When removing pigment and dirt from teeth, it may wear teeth. The better one is hydrated silica.

3. Children under 3 years old should not use fluoride toothpaste?

True appraisal: misleading

Fluoride toothpaste refers to the toothpaste containing fluoride, the common ones are sodium fluoride, sodium monofluorophosphate, stannous fluoride, etc. Fluoride is an effective anti caries component, which is one of the greatest dental discoveries in the 20th century. All people should use fluoride toothpaste. No matter how old or small they are, they should use fluoride toothpaste when baby grows his first baby tooth.

Many people worry that children under the age of 3 will accidentally eat fluoride toothpaste when they use it. If it tastes like fruit, it may be eaten directly, which will eventually lead to fluorosis. But if you don't use fluoride toothpaste because you are afraid of fluorosis, you will lose more than gain.

Generally speaking, if you want to reach the fluorine excess, you need to take 0.05-0.07 mg of fluorine per kilogram of body weight. For example, if your child weighs 10 kg, then taking 0.5-0.7 mg of fluorine will have the risk of excess.

How much fluorine does toothpaste contain? The fluoride content of general fluoride toothpaste is 1000 ppm, that is, 1 mg of fluoride per gram of toothpaste. It is estimated that if children's toothbrush is filled with toothpaste, there will be a total of 0.75-1g toothpaste, i.e. about 1mg of fluoride, which is impossible to use in general brushing. For children aged 0-3, it's very safe to use rice size toothpaste every time and soya bean size (5mm long) every time when they are 3-6 years old. It's ok if they don't wash their mouth, even if they eat these toothpastes.

According to the latest guidelines of the American Dental Association in 2014, as long as there are teeth, they should be brushed with fluoride toothpaste. The following figure (left) shows the dosage within 3 years old, which can be used from the first tooth. The key point of operation is to squeeze rice size toothpaste, and press the toothpaste into the toothbrush hair, so that children can avoid eating the toothpaste directly as jelly; the following figure (right) shows the dosage between 3-6 years old.

Again, all people should use fluoride toothpaste. Only fluoride toothpaste can effectively prevent caries. This is the suggestion of the Chinese Stomatological Association to the whole public.

IV. can herbal medicine toothpaste be selected for gingival bleeding to stop bleeding?

True appraisal: misleading

At present, no Chinese herbal toothpaste has proven hemostatic effect, and no Chinese herbal toothpaste has been clinically proven to be able to play a certain role in gingival bleeding. Gingival bleeding is a kind of representation of gingivitis and a kind of early warning from the body. After periodontal treatment and serious maintenance of oral health, gingivitis can be eliminated and bleeding will naturally stop. Ignoring the existence of inflammation, ignoring the plaque that causes inflammation, simply stopping bleeding, treating the symptoms without treating the root cause, which may delay the time of treatment, leading to more serious consequences.

V. should toothpastes containing zinc citrate or pyrophosphate be selected to remove tartar?

True appraisal: Zhang Guanli Dai

It's a very vague concept to remove the tartar. If the tartar refers to the plaque, then the main purpose of brushing is to remove the plaque. It depends on the toothbrush, toothpaste and the correct method of brushing. If tartar refers to the pigment stains on the tooth surface, the toothpaste with good friction agent, such as containing hydrated silica, should be selected. Moreover, the order of hydrated silica in the composition table should be higher, because the higher the composition content is, this is the national regulation. In addition, you can choose some toothpastes with chemical absorption components, such as polyphosphate, which can competitively absorb the pigment on the tooth surface, so as to achieve the effect of removing the pigment on the tooth surface. Zinc in zinc citrate has a weak antibacterial effect and can also slow down the formation of tartar, but this is not the right way to remove tartar.

Vi. do not use a toothpaste for a long time, which will lead to drug resistance and resistance of oral bacteria?

True appraisal: nothing comes out of nothing

When I first heard that, I was still suffering from acne. We need to recognize the bacteria in the mouth correctly: they are not very powerful, a little toothpaste can kill and inhibit most of them; at the same time, they are not so fragile, and there is no way to completely kill all the bacteria in the mouth at present. We need to be prepared to fight bacteria for a long time and a lifetime, but we don't need to be particularly afraid. They despise the enemy strategically and attach importance to the enemy tactically. At present, there is no evidence to prove that toothpaste can make bacteria in the mouth resistant, so it is safe to use. Moreover, to put it another way, the germicides used in toothpastes are just the common ones. You may have changed several toothpastes, but they are the same.

In a word, this article may have piled up some chemical terms for some commercial purposes. It's very covert to recommend one or two ingredients. In three sentences, one is right, one is wrong and one is specious. It seems that there is no principle problem. The concealment is very strong, but just one of 'children under three should not use fluoride toothpaste' may harm many children and families Long. For this kind of "popular science" without endorsement of relevant experts, we should be cautious.