Can toothpaste produce "drug resistance"?Do you want to change it frequently?The truth is ...

Are you used to the same toothpaste, or often change frequently? Some people have said that "toothpaste needs to change the brand and style to avoid drug resistance." Is this reason to make sense? Today is the 34th National Love Day. Let's take a look at the truth about toothpaste ~

01

Is there a resistance to toothpaste?

Is it necessary to change toothpaste often?

The currently available toothpaste is mainly divided into two types: ordinary toothpaste and efficacy toothpaste. The main function of ordinary toothpaste is cleaning, and its ingredients include friction agents, cleaning agents and wetters. Among them, the friction agent accounts for 30%-55%. Its role is mainly to polish the enamel with the mechanical friction of the toothbrush, remove the plaque and dental stones attached to the surface of the tooth, make the mouth clean and refreshing, and at the same time, it can also be It plays a certain whitening role. Because it does not contain medicine, there is no resistance to normal toothpaste.

Effective toothpaste is a certain effect ingredient on the basis of ordinary toothpaste, such as drugs or chemical preparations with anti -caries, white, bacteriostatic and anti -inflammatory effects. Compared with ordinary toothpaste, they have some special effects, but long -term use of the same effect type toothpaste may also lead to some oral problems, such as: toothpaste that adds peroxides to assist whitening ingredients for a long time, it is easy Exposure leads to teeth sensitivity.

Picture source: Science Popularization China

Therefore, the use of ordinary toothpaste does not have drug resistance and can be more affectionate; however, the use of effective toothpaste should be replaced regularly to prevent excessive intake of adding ingredients and cause oral problems, so it may be more rainy.

02

"Fresh Tone" toothpaste in the market

Can you solve the problem of breath?

Most of the "breath" we are talking about belongs to oral demented, including undefeated dental caries, bad repair bodies, pulp necrosis or purulent pulpitis, and the odor produced by plaque and bacterial fermentation. In addition, non -oral factors such as constipation, poor liver function, kidney disease, and protein indigestion can also lead to bad breath.

At present, the "fresh breath" toothpaste popular on the market is mainly to suppress bad breath by removing the pathogenic microorganisms that produce bad breath and the toxins and in -mouth odor gases, thereby achieving a "cure". To completely solve the problem of breath, the main cause of "smelly" first must be found out whether it is or non -oral, and then treat the specific cause, so as to really "cure the root cause".

03

Can whitening toothpaste really make the teeth whitening?

There are three main principles of whitening toothpaste to turn teeth whitening: first, physical frictions occur through the friction agent contained in toothpaste to remove the color stains attached to the surface; the other is to add chemical bleach such as peroxide, etc. , Oxidize the color stains on the surface of the teeth to achieve the effect of whitening; the third is to adjust the visual effect. For example, by adding blue pigments to temporarily attach it to the surface of the tooth, making the teeth look whiter.

Obviously, only the first two are really whitening homework to the teeth, but this whitening effect is not much thorough. As long as the toothpaste is discontinued, the teeth will return to the original color. Article 77 of the "Cosmetics Supervision and Administration Regulations" implemented from January 1, 2021 has clearly stipulated that toothpaste belongs to ordinary cosmetics. The effects of dental sensitivity and reducing gum problems cannot promote whitening effects. Therefore, it is hoped that the whitening toothpaste can help the teeth white, and the result will definitely be disappointed, and this propaganda method can only be called "pull".

04

Why do many toothpaste contain fluoride?

Fluoride toothpaste is an appropriate amount of fluoride on the basis of ordinary toothpaste. On the one hand, fluoride can increase the integrity of tooth enamel crystals. On the other hand , It can form a fluoride of fluoride that is difficulty in acid, which can enhance the ability of dental dental caries. For ordinary adults, it is still recommended to use fluoride toothpaste.

However, excessive intake of fluoride also has side effects. For people living in a high fluoride area, the local drinking water and food itself will carry more fluoris. After entering the human body through the diet, it can meet the needs of anti -dental caries, so there is no need to use fluoride toothpaste. In addition, children's use of fluoride toothpaste can easily cause fluoride, so we generally do not recommend that children under 3 years old use fluoride toothpaste.

05

What big baby can brush teeth with toothpaste?

Brushing teeth with toothpaste can effectively prevent dental caries in children. However, before the length of the tooth, it is recommended to use gauze or finger toothbrushes to clean the oral cleaning to avoid damage or bleeding of children's sensitive gums. After the child's teeth are basically long, use toothpaste and toothbrush to help them brush their teeth.

In addition, children's enamel hardness is relatively small, and it is easily damaged by the chemicals in the toothpaste. At the same time, the toothpaste contains a certain amount of preservatives. It will eat more or less due to the poor swallowing function of the child. Therefore, it is recommended to use children's toothpaste for children, and it is best to choose fluoride or low fluoride toothpaste to avoid fluoride poisoning. If you just swallow a small amount of toothpaste, you don't have to worry too much on health.

Picture source: Science Popularization China

06

How much toothpaste should be squeezed every time you brush your teeth?

The role of toothpaste is mainly to increase the friction between toothbrushes and teeth, thereby strengthening cleaning ability.For ordinary people, a pea's toothpaste with a size (about 5 mm in diameter) is enough to complete the task to help clean up the surface of the teeth.Moreover, too much toothpaste causes the foaming too fast, making people mistakenly think that the bacteria where the bubbles live without ostellogenesis, which will unconsciously shorten the brushing time, but affect the brushing effect.The long squeezed one is squeezed out, just to show the effect of the display of the toothpaste texture more fully. When you brush your teeth, you still have to control your hands, so as not to waste and not to please.Author ｜ Associate Professor of Yuan Zhiqin Beijing University of Chemical Technology

Review ｜ Associate Professor of Xiong Bin Hunan University School of Chemistry and Chemical Engineering

Source: science rumor platform

Produced: Jing Ke

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